Clock jitter insensitive continuous-time ΣΔ modulators. - Maurits Ortmanns; Friedel Gerfers; Yiannos Manoli (ICECS, 2001)

Successful design of cascaded continuous-time ΣΔ modulators. - Maurits Ortmanns; Friedel Gerfers; Lourans Samid; Yiannos Manoli (ICECS, 2001)

On the synthesis of cascaded continuous-time Sigma-Delta modulators. - Maurits Ortmanns; Friedel Gerfers; Yiannos Manoli (ISCAS (5), 2001)

Figure of merit based design strategy for low-power continuous-time Sigma-Delta modulators. - Friedel Gerfers; Kian Min Soh; Maurits Ortmanns; Yiannos Manoli (ISCAS (4), 2002)

Multirate cascaded continuous time Sigma-Delta modulators. - Maurits Ortmanns; Lourans Samid; Yiannos Manoli; Friedel Gerfers (ISCAS (4), 2002)

A new kind of low-power multibit third order continuous-time lowpass Sigma-Delta modulator. - Lourans Samid; Maurits Ortmanns; Yiannos Manoli; Friedel Gerfers (ISCAS (3), 2002)

A continuous-time sigma-delta modulator with switched capacitor controlled current mode feedback. - Maurits Ortmanns; Friedel Gerfers; Yiannos Manoli (ESSCIRC, 2003)

A power optimized decimator architecture for cascaded sigma-delta analog-to-digital converters. - Markus Becker 003; Knut Heiber; Maurits Ortmanns; Yiannos Manoli (ICECS, 2003)

A clock jitter insensitive multibit DAC architecture for high-performance low-power continuous-time ΣΔ modulators. - Friedel Gerfers; Maurits Ortmanns; P. Schmitz; Yiannos Manoli; Kian Min Soh (ICECS, 2003)

Compensation of the influence of finite gain-bandwidth on continuous-time sigma-delta modulators. - Maurits Ortmanns; Friedel Gerfers; Yiannos Manoli (ICECS, 2003)

A 1 V, 12-bit wideband continuous-time ΣΔ modulator for UMTS applications. - Friedel Gerfers; Maurits Ortmanns; Yiannos Manoli (ISCAS (1), 2003)

Influence of finite integrator gain bandwidth on continuous-time sigma delta modulators. - Maurits Ortmanns; Friedel Gerfers; Yiannos Manoli (ISCAS (1), 2003)

Fundamental limits of jitter insensitivity in discrete and continuous-time sigma delta modulators. - Maurits Ortmanns; Friedel Gerfers; Yiannos Manoli (ISCAS (1), 2003)

A 1.5-V 12-bit power-efficient continuous-time third-order ΣΔ modulator. - Friedel Gerfers; Maurits Ortmanns; Yiannos Manoli (IEEE J. Solid State Circuits, 2003)

Design issues and performance limitations of a clock jitter insensitive multibit DAC architecture for high-performance low-power CT Sigma Delta modulators. - Friedel Gerfers; Maurits Ortmanns; Yiannos Manoli (ISCAS (1), 2004)

A cascaded continuous-time Sigma Delta modulator with 80 dB dynamic range. - Maurits Ortmanns; Markus Kuderer; Yiannos Manoli; Friedel Gerfers (ISCAS (1), 2004)

Compensation of finite gain-bandwidth induced errors in continuous-time sigma-delta modulators. - Maurits Ortmanns; Friedel Gerfers; Yiannos Manoli (IEEE Trans. Circuits Syst. I Regul. Pap., 2004)

A new technique for automatic error correction in Sigma-Delta modulators. - Friedel Gerfers; Maurits Ortmanns; Yiannos Manoli (ISCAS (3), 2005)

Increased jitter sensitivity in continuous- and discrete-time Sigma-Delta modulators due to finite opamp settling speed. - Friedel Gerfers; Maurits Ortmanns; Yiannos Manoli (ISCAS (3), 2005)

A continuous-time ΣΔ Modulator with reduced sensitivity to clock jitter through SCR feedback. - Maurits Ortmanns; Friedel Gerfers; Yiannos Manoli (IEEE Trans. Circuits Syst. I Regul. Pap., 2005)

A Case Study on a 2-1-1 Cascaded Continuous-Time Sigma-Delta Modulator. - Maurits Ortmanns; Friedel Gerfers; Yiannos Manoli (IEEE Trans. Circuits Syst. I Regul. Pap., 2005)

A transistor-based clock jitter insensitive DAC architecture. - Friedel Gerfers; Maurits Ortmanns; P. Schmitz (ISCAS, 2006)

A retina stimulator ASIC with 232 electrodes, custom ESD protection and active charge balancing. - Maurits Ortmanns; N. Unger; André Rocke; Marcus Gehrke; Hans-Jürgen Tiedtke (ISCAS, 2006)

A 0.1mm2, Digitally Programmable Nerve Stimulation Pad Cell with High-Voltage Capability for a Retinal Implant. - Maurits Ortmanns; N. Unger; André Rocke; Marcus Gehrke; H. J. Tietdke (ISSCC, 2006)

A comparative study of CMOS LNAs. - Sherif Ahmed Saleh Mohamed; Maurits Ortmanns; Yiannos Manoli (ECCTD, 2007)

A Study on self-timed asynchronous subthreshold logic. - Niklas Lotze; Maurits Ortmanns; Yiannos Manoli (ICCD, 2007)

Estimating Circuit Nonidealities of Continuous-Time Multibit Delta-Sigma Modulators. - Alexander Buhmann; Matthias Keller; Maurits Ortmanns; Yiannos Manoli (ISCAS, 2007)

A Continuous-Time Field Programmable Analog Array Using Parasitic Capacitance Gm-C Filters. - Fabian Henrici; Joachim Becker; Alexander Buhmann; Maurits Ortmanns; Yiannos Manoli (ISCAS, 2007)

A Method for the Discrete-Time Simulation of Continuous-Time Sigma-Delta Modulators. - Matthias Keller; Alexander Buhmann; Maurits Ortmanns; Yiannos Manoli (ISCAS, 2007)

On the Implicit Anti-Aliasing Feature of Continuous-Time Multistage Noise-Shaping Sigma-Delta Modulators. - Matthias Keller; Alexander Buhmann; Maurits Ortmanns; Yiannos Manoli (ISCAS, 2007)

Charge Balancing in Functional Electrical Stimulators: A Comparative Study. - Maurits Ortmanns (ISCAS, 2007)

CMOS Integrated Highly Efficient Full Wave Rectifier. - Christian Peters; O. Kessling; Fabian Henrici; Maurits Ortmanns; Yiannos Manoli (ISCAS, 2007)

A 232-Channel Visual Prosthesis ASIC with Production-Compliant Safety and Testability. - Maurits Ortmanns; N. Linger; André Rocke; S. Rackow; Marcus Gehrke; Hans-Jürgen Tiedtke (ISSCC, 2007)

A 232-Channel Epiretinal Stimulator ASIC. - Maurits Ortmanns; André Rocke; Marcus Gehrke; Hans-Jürgen Tiedtke (IEEE J. Solid State Circuits, 2007)

On the Implicit Anti-Aliasing Feature of Continuous-Time Cascaded Sigma-Delta Modulators. - Matthias Keller; Alexander Buhmann; Friedel Gerfers; Maurits Ortmanns; Yiannos Manoli (IEEE Trans. Circuits Syst. I Regul. Pap., 2007)

Design of current reuse CMOS LC-VCO. - Sherif Ahmed Saleh Mohamed; Maurits Ortmanns; Yiannos Manoli (ICECS, 2008)

A new optimization approach for the automatic design of SigmaDelta-modulators. - Jens Anders; Wolfgang Mathis; Maurits Ortmanns (ISCAS, 2008)

A hexagonal Field Programmable Analog Array consisting of 55 digitally tunable OTAs. - Joachim Becker; Fabian Henrici; Stanis Trendelenburg; Maurits Ortmanns; Yiannos Manoli (ISCAS, 2008)

Analysis of digital gain error compensation in continuous-time cascaded sigma-delta modulators. - Matthias Keller; Alexander Buhmann; Maurits Ortmanns; Yiannos Manoli (ISCAS, 2008)

High-bandwidth floating gate CMOS rectifiers with reduced voltage drop. - Christian Peters; Fabian Henrici; Maurits Ortmanns; Yiannos Manoli (ISCAS, 2008)

Variability of flip-flop timing at sub-threshold voltages. - Niklas Lotze; Maurits Ortmanns; Yiannos Manoli (ISLPED, 2008)

A Continuous-Time Hexagonal Field-Programmable Analog Array in 0.13μm CMOS with 186MHz GBW. - Joachim Becker; Fabian Henrici; Stanis Trendelenburg; Maurits Ortmanns; Yiannos Manoli (ISSCC, 2008)

A Field-Programmable Analog Array of 55 Digitally Tunable OTAs in a Hexagonal Lattice. - Joachim Becker; Fabian Henrici; Stanis Trendelenburg; Maurits Ortmanns; Yiannos Manoli (IEEE J. Solid State Circuits, 2008)

A Comparative Study on Excess-Loop-Delay Compensation Techniques for Continuous-Time Sigma-Delta Modulators. - Matthias Keller; Alexander Buhmann; Jens Sauerbrey; Maurits Ortmanns; Yiannos Manoli (IEEE Trans. Circuits Syst. I Regul. Pap., 2008)

A Field Programmable Analog Array using Floating Gates for High Resolution Tuning. - Fabian Henrici; Joachim Becker; Stanis Trendelenburg; Daniel DeDorigo; Maurits Ortmanns; Yiannos Manoli (ISCAS, 2009)

Experimental Results on Power Efficient Single-poly Floating Gate Rectifiers. - Christian Peters; Jonas Handwerker; Fabian Henrici; Maurits Ortmanns; Yiannos Manoli (ISCAS, 2009)

A Background DAC Error Estimation in Sigma-Delta ADCs using a Pseudo Random Noise based Correlation Technique. - Pascal Witte; Maurits Ortmanns (ISCAS, 2009)

RF spectrum sensing technique for cognitive UWB radio network. - Muhammad Anis; Maurits Ortmanns; Norbert Wehn (ESSCIRC, 2010)

A configurable cascaded continuous-time ΔΣ modulator with up to 15MHz bandwidth. - Jens Sauerbrey; Jacinto San Pablo Garcia; Georgi Panov; Thomas Piorek; Xianghua Shen; Markus Schimper; Rudolf Koch; Matthias Keller; Yiannos Manoli; Maurits Ortmanns (ESSCIRC, 2010)

Fully integrated UWB impulse transmitter and 402-to-405MHz super-regenerative receiver for medical implant devices. - Muhammad Anis; Maurits Ortmanns; Norbert Wehn (ISCAS, 2010)

Hardware complexity of a correlation based background DAC error estimation technique for sigma-delta ADCs. - Pascal Witte; Carsten Noeske; Maurits Ortmanns (ISCAS, 2010)

Study on integrated transmission line ΣΔ modulators. - Ali Zahabi; Maurits Ortmanns (ISCAS, 2010)

An Active Approach for Charge Balancing in Functional Electrical Stimulation. - Kriangkrai Sooksood; Thomas Stieglitz; Maurits Ortmanns (IEEE Trans. Biomed. Circuits Syst., 2010)

Background DAC Error Estimation Using a Pseudo Random Noise Based Correlation Technique for Sigma-Delta Analog-to-Digital Converters. - Pascal Witte; Maurits Ortmanns (IEEE Trans. Circuits Syst. I Regul. Pap., 2010)

STF optimization of 1-bit CT ΣΔ modulators based on scaled loop filter coefficients. - Christoph Zorn; Christian Widemann; Timon Brückner; Maurits Ortmanns; Wolfgang Mathis (ECCTD, 2011)

3.1GHz-3.8GHz integrated transmission line super-regeneration amplifier with degenerative quenching technique for impulse-FM-UWB transceiver. - Ali Zahabi; Muhammad Anis; Maurits Ortmanns (ESSCIRC, 2011)

A novel optimization method for CT sigma-delta-modulators using a switched system model. - Christoph Zorn; Sebastian Stegemann; Timon Brückner; Maurits Ortmanns; Wolfgang Mathis (ISCAS, 2011)

An 8mW 50MS/s CT ΔΣ modulator with 81dB SFDR and digital background DAC linearization. - John G. Kauffman; Pascal Witte; Joachim Becker; Maurits Ortmanns (ISSCC, 2011)

An AC-powered optical receiver consuming 270μW for transcutaneous 2Mb/s data transfer. - Steffen Lange; Hongcheng Xu; Christian Lang; Holger Pless; Joachim Becker; Hans-Jürgen Tiedkte; Eckhard Hennig; Maurits Ortmanns (ISSCC, 2011)

A neural stimulator front-end with arbitrary pulse shape, HV compliance and adaptive supply requiring 0.05mm2 in 0.35μm HVCMOS. - Kriangkrai Sooksood; Emilia Noorsal; Joachim Becker; Maurits Ortmanns (ISSCC, 2011)

An 8.5 mW Continuous-Time ΔΣ Modulator With 25 MHz Bandwidth Using Digital Background DAC Linearization to Achieve 63.5 dB SNDR and 81 dB SFDR. - John G. Kauffman; Pascal Witte; Joachim Becker; Maurits Ortmanns (IEEE J. Solid State Circuits, 2011)

A Correlation-Based Background Error Estimation Technique for Bandpass Delta-Sigma ADC DACs. - Pascal Witte; John G. Kauffman; Joachim Becker; Maurits Ortmanns (IEEE Trans. Circuits Syst. II Express Briefs, 2011)

A Temperature and Process Compensated Ultralow-Voltage Rectifier in Standard Threshold CMOS for Energy-Harvesting Applications. - Hongcheng Xu; Maurits Ortmanns (IEEE Trans. Circuits Syst. II Express Briefs, 2011)

Evaluation study of compressed sensing for neural spike recordings. - Christoph Bulach; Ulrich Bihr; Maurits Ortmanns (EMBC, 2012)

Optical transcutaneous link for low power, high data rate telemetry. - Tianyi Liu; Ulrich Bihr; Syed M. Anis; Maurits Ortmanns (EMBC, 2012)

Distributed clock gating for power reduction of a programmable waveform generator for neural stimulation. - Emilia Noorsal; Kriangkrai Sooksood; Ulrich Bihr; Joachim Becker; Maurits Ortmanns (EMBC, 2012)

A 232-channel retinal vision prosthesis with a miniaturized hermetic package. - Juan S. Ordonez; Martin Schuettler; Maurits Ortmanns; Thomas Stieglitz (EMBC, 2012)

Recent advances in power efficient output stage for high density implantable stimulators. - Kriangkrai Sooksood; Emilia Noorsal; Ulrich Bihr; Maurits Ortmanns (EMBC, 2012)

A multichannel neurostimulator with transcutaneous closed-loop power control and self-adaptive supply. - Hongcheng Xu; Emilia Noorsal; Kriangkrai Sooksood; Joachim Becker; Maurits Ortmanns (ESSCIRC, 2012)

A 9.6 GS/s 112 mW 58 dB DR 150 MHz bandwidth RF bandpass transmission line ΣΔ modulator. - Ali Zahabi; Muhammad Anis; Maurits Ortmanns (ESSCIRC, 2012)

Discrete-time simulation of arbitrary digital/analog converter waveforms in continuous-time sigma-delta modulators. - Timon Brückner; Martin Kiebler; Christoph Zorn; Wolfgang Mathis; Maurits Ortmanns (ICECS, 2012)

Evaluating the influence of the bit error rate on the information of neural spike signals. - Christoph Bulach; Ulrich Bihr; Maurits Ortmanns (ICECS, 2012)

Joint estimation of filter nonidealities in continuous-time sigma-delta modulators by using an unscented Kalman filter. - Matthias Lorenz; Michael Maurer; Yiannos Manoli; Maurits Ortmanns (ICECS, 2012)

Performance tuning of multi-bit continuous time ΣΔ-modulators using a switched system model. - Christoph Zorn; Timon Brückner; Maurits Ortmanns; Wolfgang Mathis (ICECS, 2012)

A front-end circuit with active spike and LFP separation via a switched capacitor filter structure for neural recording applications. - Ulrich Bihr; Maurits Ortmanns (ISCAS, 2012)

A power efficient MDAC design with correlated double sampling for a 2-step-flash ADC. - Rudolf Ritter; John G. Kauffman; Maurits Ortmanns (ISCAS, 2012)

An error estimation technique for lowpass and bandpass ΣΔ ADC feedback DACs using a residual test signal. - Pascal Witte; John G. Kauffman; Timon Brückner; Joachim Becker; Maurits Ortmanns (ISCAS, 2012)

A new class of integrated CMOS rectifiers with improved PVT-compensated efficiency. - Hongcheng Xu; Maurits Ortmanns (ISCAS, 2012)

2.4GHz super-regeneration amplifier with degenerative quenching technique for RF-pulse width transceiver. - Ali Zahabi; Muhammad Anis; Maurits Ortmanns (ISCAS, 2012)

Digitally-switched resonators for bandpass integrated transmission line ΣΔ modulators. - Ali Zahabi; Farabi Ibne Jamal; Joachim Becker; Muhammad Anis; Maurits Ortmanns (ISCAS, 2012)

Peaking reduced STF design for CT ΣΔ modulators with selective pole compensation. - Christoph Zorn; Christian Widemann; Timon Brückner; Maurits Ortmanns; Wolfgang Mathis (ISCAS, 2012)

Session 11 overview: Sensors and MEMS: Imagers, MEMS, medical and displays subcommittee. - Christoph Hagleitner; Maurits Ortmanns (ISSCC, 2012)

A 72dB-DR ΔΣ CT modulator using digitally estimated auxiliary DAC linearization achieving 88fJ/conv in a 25MHz BW. - Pascal Witte; John G. Kauffman; Joachim Becker; Yiannos Manoli; Maurits Ortmanns (ISSCC, 2012)

A reconfigurable Continuous-Time ΔΣ-ADC using a digitally programmable gm-C array. - Daniel Angele; Martin Stein; John G. Kauffman; Maurits Ortmanns; Joachim Becker (MWSCAS, 2012)

PVT robust design of wideband CT delta sigma modulators including finite GBW compensation. - John G. Kauffman; Timon Brückner; Maurits Ortmanns (MWSCAS, 2012)

A power/area-starved complementary-cross-coupled filter for integrated transmission line ΣΔ modulators. - Ali Zahabi; Muhammad Anis; Maurits Ortmanns (MWSCAS, 2012)

Near field inductive coupled tuning technique for RF bandpass ΣΔ modulators. - Ali Zahabi; Muhammad Anis; Maurits Ortmanns (MWSCAS, 2012)

Integrated transmission lines for complementary cross-coupled bandpass filters in ΣΔ modulators. - Ali Zahabi; Muhammad Anis; Maurits Ortmanns (NEWCAS, 2012)

A Neural Stimulator Frontend With High-Voltage Compliance and Programmable Pulse Shape for Epiretinal Implants. - Emilia Noorsal; Kriangkrai Sooksood; Hongcheng Xu; Ralf Hornig; Joachim Becker; Maurits Ortmanns (IEEE J. Solid State Circuits, 2012)

Hardware-Accelerated Simulation Environment for CT Sigma-Delta Modulators Using an FPGA. - Timon Brückner; Matthias Lorenz; Christoph Zorn; Joachim Becker; Wolfgang Mathis; Maurits Ortmanns (IEEE Trans. Circuits Syst. II Express Briefs, 2012)

An active TX/RX NMR probe for real-time monitoring of MRI field imperfections. - Jonas Handwerker; Maurits Ortmanns; Jens Anders; Martin Eschelbach; Paul Chang; Anke Henning; Klaus Scheffler (BioCAS, 2013)

Design optimization of the optical receiver in transcutaneous telemetric links. - Tianyi Liu; Jens Anders; Maurits Ortmanns (BioCAS, 2013)

Frequency noise of CMOS LC tank oscillators operating in weak inversion. - Jens Anders; Maurits Ortmanns (ECCTD, 2013)

An LDO using stacked transistors on 65 nm CMOS. - Sara Pashmineh; Stefan Bramburger; Hongcheng Xu; Maurits Ortmanns; Dirk Killat (ECCTD, 2013)

Novel electronics for high-speed FM-AFM in life science applications. - Benedikt Schlecker; Maurits Ortmanns; Jens Anders; Georg E. Fantner (ECCTD, 2013)

State space analysis of mixed signal systems with switched feedback and delay. - Christoph Zorn; Tina Thiessen; Timon Brückner; Maurits Ortmanns; Wolfgang Mathis (ECCTD, 2013)

Discrete-time simulation of continuous-time ΣΔ modulators with arbitrary input signals. - Timon Brückner; Martin Kiebler; Matthias Lorenz; Christoph Zorn; Jens Anders; Wolfgang Mathis; Maurits Ortmanns (ICECS, 2013)

Design of a current steering DAC for a high speed current mode SAR ADC. - Abdelrahman Elkafrawy; Jens Anders; Timon Brückner; Maurits Ortmanns (ICECS, 2013)

An advanced unscented Kalman filter algorithm for parameter estimation in continuous-time sigma-delta modulators. - Matthias Lorenz; Timon Brückner; Jens Anders; Maurits Ortmanns (ICECS, 2013)

A bidirectional neural interface with a HV stimulator and a LV neural amplifier. - Ulrich Bihr; Thomas Ungru; Hongcheng Xu; Jens Anders; Joachim Becker; Maurits Ortmanns (ISCAS, 2013)

Calculating transfer functions of CT sigma-delta modulators with arbitrary DAC waveforms. - Timon Brückner; Martin Kiebler; Matthias Lorenz; Christoph Zorn; Wolfgang Mathis; Maurits Ortmanns (ISCAS, 2013)

Analysis and design of high speed/high linearity continuous time delta-sigma modulator. - Chao Chu; Timon Brückner; John G. Kauffman; Jens Anders; Joachim Becker; Maurits Ortmanns (ISCAS, 2013)

Low power quantizer design in CT Delta Sigma modulators. - John G. Kauffman; Rudolf Ritter; Chao Chu; Joachim Becker; Maurits Ortmanns (ISCAS, 2013)

A DAC cell with improved ISI and noise performance using native switching for multi-bit CT Delta Sigma modulators. - John G. Kauffman; Rudolf Ritter; Chao Chu; Maurits Ortmanns (ISCAS, 2013)

System level model for transcutaneous optical telemetric link. - Tianyi Liu; Jens Anders; Maurits Ortmanns (ISCAS, 2013)

Concurrent estimation of amplifier nonidealities and excess loop delay in continuous-time sigma-delta modulators. - Matthias Lorenz; Timon Brückner; Rudolf Ritter; Maurits Ortmanns (ISCAS, 2013)

Integrator swing reduction in feedback compensated Sigma-Delta modulators. - Rudolf Ritter; John G. Kauffman; Matthias Lorenz; Maurits Ortmanns (ISCAS, 2013)

PLL-based high-speed demodulation of FM signals for real-time AFM applications. - Benedikt Schlecker; Maurits Ortmanns; Jens Anders; Georg E. Fantner (ISCAS, 2013)

A multi-channel neural stimulator with resonance compensated inductive receiver and closed-loop smart power management. - Hongcheng Xu; Ulrich Bihr; Joachim Becker; Maurits Ortmanns (ISCAS, 2013)

Design of high speed high-voltage drivers based on stacked standard CMOS for various supply voltages. - Sara Pashmineh; Hongcheng Xu; Maurits Ortmanns; Dirk Killat (MWSCAS, 2013)

Introduction to the Special Issue on the 2012 IEEE International Solid-State Circuits Conference. - Maurits Ortmanns; Timothy C. Fischer; Uming Ko; Wim Dehaene; Yasuhiro Takai (IEEE J. Solid State Circuits, 2013)

Live demonstration: In vivo verification of a 100 Mbps transcutaneous optical telemetric link. - Tianyi Liu; Ulrich Bihr; Joachim Becker; Jens Anders; Maurits Ortmanns (BioCAS, 2014)

In vivo verification of a 100 Mbps transcutaneous optical telemetric link. - Tianyi Liu; Ulrich Bihr; Joachim Becker; Jens Anders; Maurits Ortmanns (BioCAS, 2014)

A neural recorder IC with HV input multiplexer for voltage and current stimulation with 18V compliance. - Ulrich Bihr; Jens Anders; J. Rickert; Martin Schuettler; A. Moeller; K. H. Boven; Joachim Becker; Maurits Ortmanns (ESSCIRC, 2014)

Multistimulator backchannel communication link implemented for safety information and closed-loop power management. - Emilia Noorsal; Kriangkrai Sooksood; Hongcheng Xu; Deepti Sukumaran; Maurits Ortmanns (ICCSCE, 2014)

Employing incremental sigma delta DACs for high resolution SAR ADC. - Ahmad AlMarashli; Jens Anders; Maurits Ortmanns (ICECS, 2014)

Design of a high linearity Gm stage for a high speed current mode SAR ADC. - Abdelrahman Elkafrawy; Ahmad AlMarashli; Rudolf Ritter; Jens Anders; Maurits Ortmanns (ICECS, 2014)

Performance evaluation of a low power optical wireless link for biomedical data transfer. - Tianyi Liu; Ulrich Bihr; Jens Anders; Maurits Ortmanns (ISCAS, 2014)

A square root unscented Kalman filter for estimating DAC and loopfilter nonidealities in continuous-time sigma-delta modulators. - Matthias Lorenz; Timon Brückner; Rudolf Ritter; Jens Anders; Maurits Ortmanns (ISCAS, 2014)

Wide-band efficiency-enhanced CMOS rectifier. - Hongcheng Xu; Matthias Lorenz; Ulrich Bihr; Jens Anders; Maurits Ortmanns (ISCAS, 2014)

A high resolution transimpedance amplifier for use in a 10-bit 200 MS/s current mode SAR ADC. - Abdelrahman Elkafrawy; Jens Anders; Maurits Ortmanns (MWSCAS, 2014)

Real-time data compression of neural spikes. - Ulrich Bihr; Hongcheng Xu; Christoph Bulach; Matthias Lorenz; Jens Anders; Maurits Ortmanns (NEWCAS, 2014)

A 1.92-GS/s CT ΔΣ modulator with 70-db DR and 78-db SFDR in 15-MHz bandwidth. - Chao Chu; John G. Kauffman; Jens Anders; Joachim Becker; Maurits Ortmanns; Michael Epp; Sebastien Chartier (NEWCAS, 2014)

A spherical simplex unscented Kalman filter with smart sigma-point processing for estimations in CT ΣΔ modulators. - Matthias Lorenz; Michael Maurer; Yiannos Manoli; Maurits Ortmanns (NEWCAS, 2014)

A high open loop gain common mode feedback technique for fully differential amplifiers. - Rudolf Ritter; Matthias Lorenz; Chao Chu; Maurits Ortmanns (NEWCAS, 2014)

A 72 dB DR, CT ΔΣ Modulator Using Digitally Estimated, Auxiliary DAC Linearization Achieving 88 fJ/conv-step in a 25 MHz BW. - John G. Kauffman; Pascal Witte; Matthias Lehmann; Joachim Becker; Yiannos Manoli; Maurits Ortmanns (IEEE J. Solid State Circuits, 2014)

Single-Cycle-PLL Detection for Real-Time FM-AFM Applications. - Benedikt Schlecker; Maja Dukic; Blake Erickson; Maurits Ortmanns; Georg E. Fantner; Jens Anders (IEEE Trans. Biomed. Circuits Syst., 2014)

A GPU-Accelerated Web-Based Synthesis Tool for CT Sigma-Delta Modulators. - Timon Brückner; Christoph Zorn; Jens Anders; Joachim Becker; Wolfgang Mathis; Maurits Ortmanns (IEEE Trans. Circuits Syst. I Regul. Pap., 2014)

A Genetic Algorithm for the Estimation of Nonidealities in Continuous-Time Sigma-Delta Modulators. - Matthias Lorenz; Rudolf Ritter; Joachim Becker; Maurits Ortmanns (IEEE Trans. Circuits Syst. II Express Briefs, 2014)

Current Feedback Linearization Applied to Oscillator Based ADCs. - Matthias Völker; Sara Pashmineh; Johann Hauer; Maurits Ortmanns (IEEE Trans. Circuits Syst. I Regul. Pap., 2014)

A multimode CT ΔΣ-modulator with a reconfigurable digital feedback filter for semi-digital blocker/interferer rejection. - Rudolf Ritter; Patrick Torta; Lukas Dörrer; Antonio Di Giandomenico; Stefan Herzinger; Maurits Ortmanns (ESSCIRC, 2015)

Anti-aliasing filter improvement in continuous-time feedback sigma-delta modulators. - Rudolf Ritter; Matthias Lorenz; Maurits Ortmanns (ISCAS, 2015)

Finite GBW compensation technique for CT ΔΣ modulators with differentiator based ELD compensation. - Chao Chu; Jens Anders; Joachim Becker; Maurits Ortmanns (NEWCAS, 2015)

A 10-bit reference free current mode SAR ADC with 58.4 dB SFDR at 50 MS/s in 90 nm CMOS. - Abdelrahman Elkafrawy; Jens Anders; Maurits Ortmanns (NORCAS, 2015)

A BW-tracking semi-digital PLL with near-optimal VCO phase noise shaping in low-cost 0.4 µm CMOS achieving 700 fs rms phase jitter. - S. Fahmy; Markus Dietl; Puneet Sareen; Maurits Ortmanns; Jens Anders (NORCAS, 2015)

Continuous-Time Delta-Sigma ADCs With Improved Interferer Rejection. - Rudolf Ritter; Maurits Ortmanns (IEEE J. Emerg. Sel. Topics Circuits Syst., 2015)

Estimation of Non-Idealities in Sigma-Delta Modulators for Test and Correction Using Unscented Kalman Filters. - Matthias Lorenz; Rudolf Ritter; Jens Anders; Maurits Ortmanns (IEEE Trans. Circuits Syst. I Regul. Pap., 2015)

A bidirectional neural interface featuring a tunable recorder and electrode impedance estimation. - Michael Haas; Jens Anders; Maurits Ortmanns (BioCAS, 2016)

An array of fully-integrated quadrature TX/RX NMR field probes for MRI trajectory mapping. - Jonas Handwerker; M. Eder; M. Tibiletti; Volker Rasche; Klaus Scheffler; Joachim Becker; Maurits Ortmanns; Jens Anders (ESSCIRC, 2016)

A continuous-time field programmable analog array with 1 GHz GBW. - Joachim Becker; Jens Anders; Maurits Ortmanns (ICECS, 2016)

Phase noise vs. jitter analysis in continuous-time LP and BP ΣΔ modulators with interferers. - Jiazuo Chi; Rudolf Ritter; Johannes Wagner 003; Jens Anders; Maurits Ortmanns (ICECS, 2016)

Enhanced Arbiter PUFs using custom sized structures for reduced noise sensitivity. - Andreas Herkle; Markus Schuster; Joachim Becker; Maurits Ortmanns (ICECS, 2016)

Designing CT ΣΔ modulators with shaped feedback waveforms using www.sigma-delta.de. - Johannes Wagner 003; Jiazuo Chi; Maurits Ortmanns (ICECS, 2016)

Designing CT ΣΔ modulators with www.sigma-delta.de. - Johannes Wagner 003; Maurits Ortmanns (ICECS, 2016)

Finite GBW in single OpAmp CT ΣΔ modulators. - Johannes Wagner 003; Stefan Reich; Rudolf Ritter; Jens Anders; Maurits Ortmanns (ICECS, 2016)

A hybrid comparator for high resolution SAR ADC. - Ahmad AlMarashli; Jens Anders; Maurits Ortmanns (ISCAS, 2016)

A tunable, robust pseudo-resistor with enhanced linearity for scanning ion-conductance microscopy. - Denis Djekic; Maurits Ortmanns; Georg E. Fantner; Jens Anders (ISCAS, 2016)

A bidirectional neural interface IC with high voltage compliance and spectral separation. - Michael Haas; Ulrich Bihr; Jens Anders; Maurits Ortmanns (ISCAS, 2016)

Using www.sigma-delta.de to rapidly obtain ELD compensated CT ΣΔ modulators. - Johannes Wagner 003; Rudolf Ritter; Maurits Ortmanns (ISCAS, 2016)

28.2 A 14GHz battery-operated point-of-care ESR spectrometer based on a 0.13µm CMOS ASIC. - Jonas Handwerker; Benedikt Schlecker; Ulrich Wachter; Peter Radermacher; Maurits Ortmanns; Jens Anders (ISSCC, 2016)

F5: Advanced IC design for ultra-low-noise sensing. - Makoto Ikeda; David Stoppa; Michiel A. P. Pertijs; Yusuke Oike; Maurits Ortmanns; Vadim Ivanov; Fu-Lung Hsueh (ISSCC, 2016)

A 10 MHz Bandwidth, 70 dB SNDR Continuous Time Delta-Sigma Modulator With Digitally Improved Reconfigurable Blocker Rejection. - Rudolf Ritter; John G. Kauffman; Joachim Becker; Maurits Ortmanns (IEEE J. Solid State Circuits, 2016)

Exploiting Weak PUFs From Data Converter Nonlinearity - E.g., A Multibit CT ΔΣ Modulator. - Andreas Herkle; Joachim Becker; Maurits Ortmanns (IEEE Trans. Circuits Syst. I Regul. Pap., 2016)

A -245 dB FOM 48 fs rms jitter semi-digital PLL with intrinsic temperature compensation in 130 nm CMOS. - Jens Anders; Sebastian Bader 003; Markus Dietl; Puneet Sareen; G. Rombach; Sotirios Tambouris; Maurits Ortmanns (A-SSCC, 2017)

An implant for wireless in situ measurement of lip pressure with 12 sensors. - Joachim Becker; David Pellhammer; Patrick Preisner; Julia C. Gloggler; Bernd G. Lapatki; Maurits Ortmanns (BioCAS, 2017)

VCO-based ESR-on-a-chip as a tool for low-cost, high-sensitivity food quality control. - Anh Chu; Benedikt Schlecker; Jonas Handwerker; Silvio Künstner; Maurits Ortmanns; Klaus Lips; Jens Anders (BioCAS, 2017)

A neural data lossless compression scheme based on spatial and temporal prediction. - Matteo Pagin; Maurits Ortmanns (BioCAS, 2017)

Evaluation of single-bit sigma-delta modulator DAC for electrical impedance spectroscopy. - Mahdi Rajabzadeh; Joachim Becker; Maurits Ortmanns (BioCAS, 2017)

A miniaturized UWB antenna for implantable data telemetry. - Michael Haas; Benedikt Schweizer; Jens Anders; Maurits Ortmanns (EMBC, 2017)

Evaluation of logarithmic vs. linear ADCs for neural signal acquisition and reconstruction. - Matteo Pagin; Maurits Ortmanns (EMBC, 2017)

A transimpedance amplifier using a widely tunable PVT-independent pseudo-resistor for high-performance current sensing applications. - Denis Djekic; Georg E. Fantner; Jan Behrends; Klaus Lips; Maurits Ortmanns; Jens Anders (ESSCIRC, 2017)

VCO-based ESR-on-a-chip as a tool for low-cost, high-sensitivity point-of-care diagnostics. - Benedikt Schlecker; Anh Chu; Jonas Handwerker; S. Kiinstner; Maurits Ortmanns; Klaus Lips; Jens Anders (IEEE SENSORS, 2017)

Live demonstration: A VCO-based point-of-care ESR spectrometer. - Benedikt Schlecker; Anh Chu; Jonas Handwerker; Silvio Künstner; Maurits Ortmanns; Klaus Lips; Jens Anders (IEEE SENSORS, 2017)

Digital interferer suppression and jitter reduction in continuous-time bandpass ΣΔ modulators. - Jiazuo Chi; Johannes Wagner 003; Jens Anders; Maurits Ortmanns (ISCAS, 2017)

Towards CMOS-based in-vivo NMR spectroscopy and microscopy. - Jonas Handwerker; Marlon Perez-Rodas; Maurits Ortmanns; Klaus Scheffler; Jens Anders (ISCAS, 2017)

Designing CT bandpass ΣΔ modulators with arbitrary STF shapes. - Johannes Wagner 003; Jiazuo Chi; Maurits Ortmanns (ISCAS, 2017)

Evaluation of spike sorting and compression for digitally reconfigurable non-uniform quantization. - Matteo Pagin; Joachim Becker; Maurits Ortmanns (NEWCAS, 2017)

Integrated Circuit Technology for Next Generation Point-of-Care Spectroscopy Applications. - Jonas Handwerker; Benedikt Schlecker; Maurits Ortmanns; Jens Anders (IEEE Commun. Mag., 2017)

Efficient implementation and stability analysis of a HV-CMOS current/voltage mode stimulator. - Michael Haas; Maurits Ortmanns (BioCAS, 2018)

A Low Distortion Continuous Time Sigma Delta Modulator using a High Input Impedance Instrumentation Amplifier for Neural Recording. - Antonios Nikas; Sreenivas Jambunathan; Leonhard Klein; Matthias Völker; Maurits Ortmanns (BioCAS, 2018)

Study of Compressed Sensing and Predictor Techniques for the Compression of Neural Signals under the Influence of Noise. - Matteo Pagin; Maurits Ortmanns (EMBC, 2018)

An Integrator-Differentiator TIA Using a Multi-Element Pseudo-Resistor in its DC Servo Loop for Enhanced Noise Performance. - Matthias Häberle; Denis Djekic; Georg E. Fantner; Klaus Lips; Maurits Ortmanns; Jens Anders (ESSCIRC, 2018)

An Analog High-Speed Single-Cycle Lock-in Amplifier for Next Generation AFM Experiments. - Benedikt Schlecker; Adrian P. Nievergelt; Maurits Ortmanns; Georg E. Fantner; Jens Anders (IEEE SENSORS, 2018)

Live Demonstration: Designing CT BP ΣΔ Modulators with www.sigma-delta.de. - Johannes Wagner 003; Maurits Ortmanns (ISCAS, 2018)

Nonlinear Energy-Efficient Noise-Aware Design of CMOS LC Tank Oscillators. - Sebastian Bader 003; Maurits Ortmanns; Jens Anders (ISCAS, 2018)

Man or Machine - Design Automation of Delta-Sigma Modulators. - Johannes Wagner 003; Maurits Ortmanns; José M. de la Rosa 001 (ISCAS, 2018)

Interferer Induced Jitter Reduction in Bandpass CT ΣΔ Modulators for Receiver Applications. - Jiazuo Chi; Ankesh Jain; Jens Sauerbrey; Joachim Becker; Maurits Ortmanns (ISCAS, 2018)

An Arbiter PUF employing eye-opening oscillation for improved noise suppression. - Andreas Herkle; Joachim Becker; Maurits Ortmanns (ISCAS, 2018)

Gain Mismatch Insensitive Time-Interleaved DAC for CT Delta Sigma Modulator by application of a Three-State DAC. - Ankesh Jain; Maurits Ortmanns (ISCAS, 2018)

A High-Resolution Delta-Sigma D/A Converter Architecture with High Tolerance to DAC Mismatch. - Yanquan Luo; Liang Qi 002; Ankesh Jain; Maurits Ortmanns (ISCAS, 2018)

Comparison Study of Integrated Potentiostats: Resistive-TIA, Capacitive-TIA, CT ΣΔ Modulator. - Mahdi Rajabzadeh; Denis Djekic; Matthias Haeberle; Joachim Becker; Jens Anders; Maurits Ortmanns (ISCAS, 2018)

An 8-channel 13GHz ESR-on-a-Chip injection-locked vco-array achieving 200μM-concentration sensitivity. - Anh Chu; Benedikt Schlecker; Klaus Lips; Maurits Ortmanns; Jens Anders (ISSCC, 2018)

A 1.1mW 200kS/s incremental ΔΣ ADC with a DR of 91.5dB using integrator slicing for dynamic power reduction. - Patrick Vogelmann; Michael Haas; Maurits Ortmanns (ISSCC, 2018)

A Feasibility Study of Digital Beamforming for 5G mmWave Massive MIMO Base Station Receivers. - Zoltan Nemes; Dominique Morche; Stéphane Le Tual; Maurits Ortmanns (NEWCAS, 2018)

Automated Synthesis of Subsampling CT Bandpass ΣΔ Modulators with Non-Idealities. - Johannes Wagner 003; Felix Vogel; Florian Kuhm; Maurits Ortmanns (NGCAS, 2018)

On the Optimization of DT Incremental Sigma-Delta Modulators in Combination with CoI Reconstruction Filters. - Johannes Wagner 003; Patrick Vogelmann; Maurits Ortmanns (NGCAS, 2018)

Evaluation of Frontend Readout Circuits for High Performance Automotive MEMS Accelerometers. - Alice Lanniel; Thomas Alpert; Tobias Boeser; Maurits Ortmanns (PRIME, 2018)

A Nyquist Rate SAR ADC Employing Incremental Sigma Delta DAC Achieving Peak SFDR = 107 dB at 80 kS/s. - Ahmad AlMarashli; Jens Anders; Joachim Becker; Maurits Ortmanns (IEEE J. Solid State Circuits, 2018)

A 0.1% THD, 1-MΩ to 1-GΩ Tunable, Temperature-Compensated Transimpedance Amplifier Using a Multi-Element Pseudo-Resistor. - Denis Djekic; Georg E. Fantner; Klaus Lips; Maurits Ortmanns; Jens Anders (IEEE J. Solid State Circuits, 2018)

A 0.4-V Gm-C Proportional-Integrator-Based Continuous-Time ΔΣ Modulator With 50-kHz BW and 74.4-dB SNDR. - Lishan Lv; Ankesh Jain; Xiong Zhou; Joachim Becker; Qiang Li 021; Maurits Ortmanns (IEEE J. Solid State Circuits, 2018)

Improved SQNR and MSA in Incremental ΔΣ Modulators by Using a Recuperation Phase. - Patrick Vogelmann; Johannes Wagner 003; Adrian Hänsler; Maurits Ortmanns (IEEE Trans. Circuits Syst. II Express Briefs, 2018)

A 24-Ch. Multi-Electrode Array Allowing Fast EIS to Determine Transepithelial Electrical Resistance. - Mahdi Rajabzadeh; Jonathan Ungethuem; Andreas Herkle; Carolin Schilpp; M. Fauler; Oliver Wittekindt; Maurits Ortmanns (BioCAS, 2019)

A 94.3-dB SFDR, 91.5-dB DR, and 200-kS/s CT Incremental Delta-Sigma Modulator With Differentially Reset FIR Feedback. - Mohamed A. Mokhtar; Patrick Vogelmann; Michael Haas; Maurits Ortmanns (ESSCIRC, 2019)

An Integrated Readout for Current Sensing based on a Σ∆ Modulator with Switched Capacitor Feedback. - Mahdi Rajabzadeh; Matthias Häberle; Ankesh Jain; Maurits Ortmanns (ESSCIRC, 2019)

In-depth Analysis and Enhancements of RO-PUFs with a Partial Reconfiguration Framework on Xilinx Zynq-7000 SoC FPGAs. - Andreas Herkle; Holger Mandry; Joachim Becker; Maurits Ortmanns (HOST, 2019)

Comparison of Different Precision Pseudo Resistor Realizations in the DC-Feedback of Capacitive Transimpedance Amplifiers. - Matthias Häberle; Denis Djekic; Mahdi Rajabzadeh; Georg E. Fantner; Klaus Lips; Maurits Ortmanns; Jens Anders (ICECS, 2019)

Finite Gain-Bandwidth of Q Enhancement in Bandpass CT ΣΔ Modulator and Compensation. - Jiazuo Chi; Holger Mandry; Maurits Ortmanns (ISCAS, 2019)

Effective Filtering of Requantization Error in Dual Quantized CTDSM using FIR DAC. - Ankesh Jain; Ahmed Abdelaal; Maurits Ortmanns (ISCAS, 2019)

Modular PUF Coding Chain with High-Speed Reed-Muller Decoder. - Holger Mandry; Andreas Herkle; Ludwig Kürzinger; Sven Müelich; Joachim Becker; Robert F. H. Fischer; Maurits Ortmanns (ISCAS, 2019)

Incremental Sturdy-MASH Sigma-Delta Modulator with Reduced Sensitivity to DAC Mismatch. - Mohamed A. Mokhtar; Patrick Vogelmann; Johannes Wagner 003; Maurits Ortmanns (ISCAS, 2019)

An Evaluation Study of Various Excitation Signals for Electrical Impedance Spectroscopy. - Mahdi Rajabzadeh; Jonathan Ungethuem; Holger Mandry; Carolin Schilpp; Oliver Wittekindt; Maurits Ortmanns (ISCAS, 2019)

A 76.6dB-SNDR 50MHz-BW 29.2mW Noise-Coupling-Assisted CT Sturdy MASH ΔΣ Modulator with 1.5b/4b Quantizers in 28nm CMOS. - Liang Qi 002; Ankesh Jain; Dongyang Jiang; Sai-Weng Sin; Rui Paulo Martins; Maurits Ortmanns (ISSCC, 2019)

Comparison of Direct Digitization Current Sensing Circuits for EIS. - Mahdi Rajabzadeh; Matthias Häberle; Maurits Ortmanns (PRIME, 2019)

A Continuous-Time Delta-Sigma Modulator Using a Modified Instrumentation Amplifier and Current Reuse DAC for Neural Recording. - Antonios Nikas; Sreenivas Jambunathan; Leonhard Klein; Matthias Völker; Maurits Ortmanns (IEEE J. Solid State Circuits, 2019)

A Dynamic Power Reduction Technique for Incremental $ Delta Sigma$ Modulators. - Patrick Vogelmann; Johannes Wagner 003; Michael Haas; Maurits Ortmanns (IEEE J. Solid State Circuits, 2019)

Input Referred Comparator Noise in SAR ADCs. - Yanquan Luo; Ankesh Jain; Johannes Wagner 003; Maurits Ortmanns (IEEE Trans. Circuits Syst. II Express Briefs, 2019)

On the Signal Filtering Property of CT Incremental Sigma-Delta ADCs. - Johannes Wagner 003; Patrick Vogelmann; Maurits Ortmanns (IEEE Trans. Circuits Syst. II Express Briefs, 2019)

An Automated Design Environment for CT Incremental Sigma-Delta ADCs. - Johannes Wagner 003; Patrick Vogelmann; Maurits Ortmanns (ICECS, 2020)

A Comparative Study of ISI Errors in Different DAC Structures for CT Delta-Sigma Modulators. - Ahmed Abdelaal; John G. Kauffman; Mohamed A. Mokhtar; Maurits Ortmanns (ISCAS, 2020)

Feedback Receivers: Specification and State-of-the-Art Review. - Navatouch Deeying; Maurits Ortmanns (ISCAS, 2020)

Live Demonstration: Generating FPGA Fingerprints Utilizing Full-Chip Characterization with Ring-Oscillator PUFs. - Andreas Herkle; Holger Mandry; Joachim Becker; Maurits Ortmanns (ISCAS, 2020)

Extracting Weak PUFs from Differential Nonlinearity of Digital-to-Analog Converters. - Andreas Herkle; Holger Mandry; Stefan Reich; Markus Sporer; Joachim Becker; Maurits Ortmanns (ISCAS, 2020)

Comparison of Measurement and Readout Strategies for RO-PUFs on Xilinx Zynq-7000 SoC FPGAs. - Andreas Herkle; Philipp Rossak; Holger Mandry; Joachim Becker; Maurits Ortmanns (ISCAS, 2020)

FIR DACs in CT Incremental Delta-Sigma Modulators. - Mohamed A. Mokhtar; Patrick Vogelmann; Ahmed Abdelaal; John G. Kauffman; Maurits Ortmanns (ISCAS, 2020)

A Self-Compensated, Low-Offset Voltage Buffer for Input Impedance Boosting in Chopped Neural Front-Ends. - Stefan Reich; Markus Sporer; Maurits Ortmanns (ISCAS, 2020)

A 76.6-dB-SNDR 50-MHz-BW 29.2-mW Multi-Bit CT Sturdy MASH With DAC Non-Linearity Tolerance. - Liang Qi 002; Ankesh Jain; Dongyang Jiang; Sai-Weng Sin; Rui Paulo Martins; Maurits Ortmanns (IEEE J. Solid State Circuits, 2020)

Design Approach for Ring Amplifiers. - Joschua Conrad; Patrick Vogelmann; Mohamed A. Mokhtar; Maurits Ortmanns (IEEE Trans. Circuits Syst., 2020)

Normalization and Multi-Valued Symbol Extraction From RO-PUFs for Enhanced Uniform Probability Distributions. - Holger Mandry; Andreas Herkle; Sven Müelich; Joachim Becker; Robert F. H. Fischer; Maurits Ortmanns (IEEE Trans. Circuits Syst., 2020)

A 14b, Twofold Time-Interleaved Incremental ΔΣ ADC Using Hardware Sharing. - Patrick Vogelmann; Johannes Wagner 003; Maurits Ortmanns (IEEE Trans. Circuits Syst., 2020)

Performance Evaluation of Incremental Sigma-Delta ADCs Based on their NTF. - Johannes Wagner 003; Patrick Vogelmann; Maurits Ortmanns (IEEE Trans. Circuits Syst., 2020)

A 0.9-V Calibration-Free 97dB-SFDR 2-MS/s Continuous Time Incremental Delta-Sigma ADC Utilizing Variable Bit Width Quantizer in 28nm CMOS. - Mohamed A. Mokhtar; Ahmed Abdelaal; Markus Sporer; Joachim Becker; John G. Kauffman; Maurits Ortmanns (CICC, 2021)

Wideband and Low-Power Delta-Sigma ADCs: State of the Art, Trends and Implementation Examples. - Maurits Ortmanns (ESSCIRC, 2021)

Nonlinearity Modeling for Mixed-Signal Inference Accelerators in Training Frameworks. - Joschua Conrad; Biyi Jiang; Paul Kässer; Vasileios Belagiannis; Maurits Ortmanns (ICECS, 2021)

A Comparative Study of Noise Behavior in Single-Opamp Resonators in Delta-Sigma Modulators. - Mohamed A. Mokhtar; Martin Merkle; John G. Kauffman; Maurits Ortmanns (ICECS, 2021)

Digital Resolution Requirements in 0-X MASH Delta-Sigma-Modulators. - Jonathan Ungethüm; John G. Kauffman; Maurits Ortmanns (ICECS, 2021)

FIR Filter with Symmetric Non-Equal Coefficients for CT Delta-Sigma Modulators. - Ahmed Abdelaal; Michael Pietzko; Mohamed A. Mokhtar; John G. Kauffman; Maurits Ortmanns (ISCAS, 2021)

Using Polynomial Interpolation for Reproducing Multi-Valued Responses of Physical Unclonable Functions on FPGAs. - Holger Mandry; Sven Müelich; Joachim Becker; Robert F. H. Fischer; Maurits Ortmanns (ISCAS, 2021)

Influence of Excess Loop Delay on the STF of Continuous-Time Delta-Sigma Modulators. - Michael Pietzko; Johannes Wagner 003; Ahmed Abdelaal; John G. Kauffman; Maurits Ortmanns (ISCAS, 2021)

Minimizing Signal-Dependent Residue in CT Pipelined ADCs. - Jonathan Ungethüm; John G. Kauffman; Maurits Ortmanns (MWSCAS, 2021)

Compensation of Finite GBW in CT Bandpass SDMs based on Single-OpAmp Resonators with Positive-Feedback. - Johannes Wagner 003; Takashi Miki; Maurits Ortmanns (MWSCAS, 2021)

A High-Voltage Compliance, 32-Channel Digitally Interfaced Neuromodulation System on Chip. - Stefan Reich; Markus Sporer; Michael Haas; Joachim Becker; Martin Schüttler; Maurits Ortmanns (IEEE J. Solid State Circuits, 2021)

Erratum to "A High-Voltage Compliance, 32-Channel Digitally Interfaced Neuromodulation System-on-Chip". - Stefan Reich; Markus Sporer; Michael Haas; Joachim Becker; Martin Schüttler; Maurits Ortmanns (IEEE J. Solid State Circuits, 2021)

A Chopped Neural Front-End Featuring Input Impedance Boosting With Suppressed Offset-Induced Charge Transfer. - Stefan Reich; Markus Sporer; Maurits Ortmanns (IEEE Trans. Biomed. Circuits Syst., 2021)

Noise Analysis of Charge-Balanced Readout Circuits for MEMS Accelerometers. - Alice Lanniel; Tobias Boeser; Thomas Alpert; Maurits Ortmanns (IEEE Trans. Circuits Syst. I Regul. Pap., 2021)

Input Referred Noise of VCO-Based Comparators. - Yanquan Luo; Maurits Ortmanns (IEEE Trans. Circuits Syst. II Express Briefs, 2021)

Comparison Study of DAC Realizations in Current Input CTΣΔ Modulators. - Mahdi Rajabzadeh; Matthias Häberle; Joachim Becker; Maurits Ortmanns (IEEE Trans. Circuits Syst. II Express Briefs, 2021)

A Multilevel Coding Scheme for Multi-Valued Physical Unclonable Functions. - Sven Müelich; Holger Mandry; Maurits Ortmanns; Robert F. H. Fischer (IEEE Trans. Inf. Forensics Secur., 2021)

An Onchip Electrode Impedance Estimation achieving 1.2 dB 3σ-Accuracy with Minimum Hardware Overhead. - Stefan Reich; Peter Ammann; Markus Sporer; Maurits Ortmanns (BioCAS, 2022)

A Wireless Headstage Prototype Based on a Neurorecorder IC. - Markus Sporer; Stefan Reich; Holger Mandry; Joachim Becker; Maurits Ortmanns (BioCAS, 2022)

A 32-ch Neuromodulator with redundant Voltage Monitors avoiding Blocking Capacitors. - Stefan Reich; Markus Sporer; Joachim Becker; Stefan B. Rieger; Martin Schüttler; Maurits Ortmanns (ESSCIRC, 2022)

PUF-Entropy Extraction of DAC Intersymbol-Interference using Continuous-Time Delta-Sigma ADCs. - Bjoern Driemeyer; Holger Mandry; David-Peter Wiens; Joachim Becker; Maurits Ortmanns (ICECS 2022, 2022)

Automated Design of Sigma-Delta Modulators with FIR Feedback. - Johannes Wagner 003; Mohamed A. Mokhtar; Maurits Ortmanns (ISCAS, 2022)

Complexity Reduced LUT-Based DAC Correction in Continuous-Time Delta-Sigma Modulators. - Bjoern Driemeyer; Julian Spiess; John G. Kauffman; Maurits Ortmanns (ISCAS, 2022)

Bitwise ELD Compensation in Δ∑ Modulators. - Michael Pietzko; Jonathan Ungethüm; John G. Kauffman; Qiang Li 021; Maurits Ortmanns (ISCAS, 2022)

An Experimental Reliability Study of Pseudo-Resistors in Biomedical Applications. - Stefan Reich; Dominik Fritschi; Markus Sporer; Maurits Ortmanns (ISCAS, 2022)

Maximizing the Inter-Stage Gain in CT 0-X MASH Delta-Sigma-Modulators. - Jonathan Ungethüm; Michael Pietzko; John G. Kauffman; Qiang Li 021; Maurits Ortmanns (ISCAS, 2022)

A 13-bit 1-MS/s SAR ADC With Rotation-Based Mismatch Error Cancellation. - Jing Zhang; Lulu Zhang; Xiong Zhou; Maurits Ortmanns; Qiang Li 021 (ISCAS, 2022)

Artifact-Recovery in Neuromodulators using Tunable High-Pass Corners. - Stefan Reich; Dominik Fritschi; Markus Sporer; Maurits Ortmanns (NEWCAS, 2022)

Analysis of Chopper Ripple Reduction by Delayed Sampling. - Stefan Reich; Gunnar Kunze; Markus Sporer; Maurits Ortmanns (PRIME, 2022)

A 0.9-V DAC-Calibration-Free Continuous-Time Incremental Delta-Sigma Modulator Achieving 97-dB SFDR at 2 MS/s in 28-nm CMOS. - Mohamed A. Mokhtar; Ahmed Abdelaal; Markus Sporer; Joachim Becker; John G. Kauffman; Maurits Ortmanns (IEEE J. Solid State Circuits, 2022)

A Direct Digitizing Chopped Neural Recorder Using a Body-Induced Offset Based DC Servo Loop. - Markus Sporer; Stefan Reich; John G. Kauffman; Maurits Ortmanns (IEEE Trans. Biomed. Circuits Syst., 2022)

An Integrator-Differentiator Transimpedance Amplifier Using Tunable Linearized High-Value Multi-Element Pseudo-Resistors. - Matthias Häberle; Denis Djekic; Daniel Krüger; Mahdi Rajabzadeh; Maurits Ortmanns; Jens Anders (IEEE Trans. Circuits Syst. I Regul. Pap., 2022)

Wideband Continuous-Time MASH Delta-Sigma Modulators: A Tutorial Review. - Liang Qi 002; Yuekai Liu; Sai-Weng Sin; Xinpeng Xing; Guoxing Wang; Maurits Ortmanns; Rui Paulo Martins (IEEE Trans. Circuits Syst. II Express Briefs, 2022)

VE-FIDES: Designing Trustworthy Supply Chains Using Innovative Fingerprinting Implementations. - Bernhard Lippmann; Joel Hatsch; Stefan Seidl; Detlef Houdeau; Niranjana Papagudi Subrahmanyam; Daniel Schneider; Malek Safieh; Anne Passarelli; Aliza Maftun; Michaela Brunner; Tim Music; Michael Pehl; et al. (DATE, 2023)

A 40 kS/sCalibration-Free Incremental △Σ ADC Achieving 104 dB DR and 105.7 dB SFDR. - Mohamed A. Mokhtar; Omar Ismail; Patrick Vogelmann; John G. Kauffman; Maurits Ortmanns (ESSCIRC, 2023)

A Chopped 6-bit 1.6 GS/s SAR ADC Utilizing Slow Decision Information in 22 nm FDSOI. - Jonathan Ungethüm; Michael Pietzko; Ahmed Abdelaal; John G. Kauffman; Maurits Ortmanns (ESSCIRC, 2023)

A Feasibility Study on a Switched-Capacitor Based PUF in 28 nm Technology. - Bjoern Driemeyer; Paul Kaesser; Holger Mandry; David-Peter Wiens; Maurits Ortmanns (ICECS, 2023)

Optimum Position of Digital DAC Error Correction relative to the Decimation Filter in ΔΣ ADCs. - Bjoern Driemeyer; Paul Kaesser; Maurits Ortmanns (ICECS, 2023)

Quantizer Gain in Incremental Delta-Sigma ADCs. - Paul Kaesser; Johannes Wagner 003; Omar Ismail; Bjoern Driemeyer; Maurits Ortmanns (ICECS, 2023)

Linear-Exponential I-DS ADCs: Analysis, Limitations and Higher Order. - Paul Kaesser; Omar Ismail; Christian Rudorf; Johannes Wagner 003; Maurits Ortmanns (ISCAS, 2023)

On the Intrinsic Linearity Limitations of Single-Bit Delta Sigma Modulators. - Matteo Dalla Longa; Francesco Conzatti; Jose Luis Ceballos; Maurits Ortmanns (ISCAS, 2023)

NeuroBus - Architecture and Communication Bus for an Ultra-Flexible Neural Interface. - Markus Sporer; Nicolas Graber; Stefan Reich; Calogero Gueli; Joachim Becker; Thomas Stieglitz; Maurits Ortmanns (ISCAS, 2023)

Bitwise ELD Compensation under Integrator Nonidealities in ΔΣ Modulators. - Michael Pietzko; Julian Spiess; Jonathan Ungethüm; John G. Kauffman; Qiang Li 021; Maurits Ortmanns (NEWCAS, 2023)

A Time-Domain Charge-Balancing Method for Neuromodulators. - Stefan Reich; Markus Sporer; Maurits Ortmanns (NEWCAS, 2023)

A flexible Power Management System-On-Chip for Implantable Brain-Machine-Interfaces. - Stefan Reich; Markus Sporer; Maurits Ortmanns (NEWCAS, 2023)

On the Synthesis of Continuous-Time Sturdy MASH Delta-Sigma Modulators. - Jingying Zhang; Sai-Weng Sin; Yan Liu 016; Fan Ye 001; Guoxing Wang; Maurits Ortmanns; Liang Qi 002 (IEEE Trans. Circuits Syst. II Express Briefs, 2023)

An Intrinsically Linear 13-Level Capacitive DAC for Delta Sigma Modulators. - Matteo Dalla Longa; Francesco Conzatti; Tobias Hofmann; John G. Kauffman; Maurits Ortmanns (IEEE Trans. Circuits Syst. II Express Briefs, 2023)

Delay Error Shaping in ΔΣ Modulators Using Time-Interleaved High Resolution Quantizers. - Michael Pietzko; Jonathan Ungethüm; John G. Kauffman; Maurits Ortmanns (IEEE Trans. Circuits Syst. I Regul. Pap., 2023)

In Vitro Study of Artifact-Recovery Using a 32-Channel Neuromodulator Platform. - Stefan Reich; Dominik Fritschi; Markus Sporer; Maurits Ortmanns (IEEE Trans. Circuits Syst. I Regul. Pap., 2023)

Frequency-Domain Analysis of Reconfigured Incremental ΔΣ ADCs on the Example of the Exponential Phase. - Paul Kaesser; Omar Ismail; Johannes Wagner 003; Robert F. H. Fischer; Maurits Ortmanns (IEEE Trans. Circuits Syst. I Regul. Pap., 2023)

Too-Hot-to-Handle: Insights into Temperature and Noise Hyperparameters for Differentiable Neural-Architecture-Searches. - Joschua Conrad; Simon Wilhelmstätter; Rohan Asthana; Vasileios Belagiannis; Maurits Ortmanns (AICAS, 2024)

Attacking a Joint Protection Scheme for Deep Neural Network Hardware Accelerators and Models. - Simon Wilhelmstätter; Joschua Conrad; Devanshi Upadhyaya; Ilia Polian; Maurits Ortmanns (AICAS, 2024)

An ultra-miniaturized Neural Recording μASIC for the NeuroBus Implant. - Markus Sporer; Nicolas Graber; Monika Mayer; Stefan Reich; Thomas Stieglitz; Maurits Ortmanns (BioCAS, 2024)

A 15MHz-BW 82.7dB-SNDR 98.8dB-SFDR Pipelined MASH 2-2 CT DSM in 65nm CMOS. - Xinyu Qin; Yichen Jin; Guoxing Wang; Sai-Weng Sin; Maurits Ortmanns; Yong Lian 001; Liang Qi 002 (CICC, 2024)

Enabling Power Side-Channel Attack Simulation on Mixed-Signal Neural Network Accelerators. - Simon Wilhelmstätter; Joschua Conrad; Devanshi Upadhyaya; Ilia Polian; Maurits Ortmanns (COINS, 2024)

Using Negative-R Assisted Integrators in Wide-band Delta-Sigma Modulators. - Ahmed Abdelaal; Michael Pietzko; Jonathan Ungethüm; John G. Kauffman; Maurits Ortmanns (ISCAS, 2024)

Optimisation of RO-PUF Design Parameters for Minimising the Effective Area per PUF Bit. - Bjoern Driemeyer; Holger Mandry; David-Peter Wiens; Joachim Becker; Maurits Ortmanns (ISCAS, 2024)

DAC Element Mismatch Shaping Algorithms in Incremental Delta-Sigma ADCs. - Omar Ismail; Paul Kaesser; John G. Kauffman; Maurits Ortmanns (ISCAS, 2024)

Offset Cancellation in Incremental ∆Σ ADCs. - Paul Kaesser; Omar Ismail; David-Peter Wiens; Maurits Ortmanns (ISCAS, 2024)

Stability Prediction of Δ∑ Modulators using Artificial Neural Networks. - Paul Kaesser; Sebastian Kaltenstadler; Joschua Conrad; Johannes Wagner 003; Omar Ismail; Maurits Ortmanns (ISCAS, 2024)

Overcoming Impedance-Mismatch Induced Offsets in Background Bond Wire Defect Detection. - Niklas Klefe; Rudolf Ritter; Mahdi Rajabzadeh; Thomas Mayer; Maurits Ortmanns (ISCAS, 2024)

A 600MS/s 10-bit SAR ADC with unit via-based delta-length C-DAC in 22nm FDSOI. - Michael Pietzko; Jonathan Ungethüm; Ahmed Abdelaal; John G. Kauffman; Maurits Ortmanns (ISCAS, 2024)

A Mixed-Signal TIA with Input Restoring ADC. - David-Peter Wiens; Björn Driemeyer; Maurits Ortmanns (ISCAS, 2024)

Confidence Estimation and Boosting for Dynamic-Comparator Transient-Noise Analysis. - Joschua Conrad; John G. Kauffman; Simon Wilhelmstätter; Rohan Asthana; Vasileios Belagiannis; Maurits Ortmanns (NewCAS, 2024)

Non-Ideal Reset in Incremental Delta-Sigma ADCs. - Omar Ismail; Paul Kaesser; John G. Kauffman; Maurits Ortmanns (NewCAS, 2024)

A 470μW, 102.6dB-DR, 20kHz BW Calibration-Free ΔΣ Modulator with SFDR in Excess of 110dBc using an Intrinsically Linear 13-Level DAC. - Matteo Dalla Longa; Francesco Conzatti; Omar Ismail; John G. Kauffman; Maurits Ortmanns (VLSI Technology and Circuits, 2024)

Multi-conditioned Graph Diffusion for Neural Architecture Search. - Rohan Asthana; Joschua Conrad; Youssef Dawoud; Maurits Ortmanns; Vasileios Belagiannis (Trans. Mach. Learn. Res., 2024)

A Mixed-Signal Integrator-Differentiator-TIA. - David-Peter Wiens; Markus Sporer; Björn Driemeyer; Maurits Ortmanns (IEEE Trans. Circuits Syst. II Express Briefs, 2024)

NeuroBus - Architecture for an Ultra-Flexible Neural Interface. - Markus Sporer; Ioana Georgiana Vasilas; Ahmed Adzemovic; Nicolas Graber; Stefan Reich; Calogero Gueli; Max Eickenscheidt; Ilka Diester; Thomas Stieglitz; Maurits Ortmanns (IEEE Trans. Biomed. Circuits Syst., 2024)

Inner Transfer Functions in Incremental ΔΣ ADCs. - Paul Kaesser; Johannes Wagner 003; Omar Ismail; Maurits Ortmanns (IEEE Trans. Circuits Syst. II Express Briefs, 2024)

A Calibration-free 80MHz CT DSM Using Dual Quantization and ISI Shuffler Achieving 106.2dB SFDR. - Ahmed Abdelaal; John G. Kauffman; Joachim Becker; Matteo Dalla Longa; Francesco Conzatti; Maurits Ortmanns (CICC, 2025)

Reducing the Impact of Non-Idealities on Incremental Δ∑ ADCs by Reconfiguration: A Review. - Omar Ismail; Paul Kaesser; Maurits Ortmanns (CICC, 2025)

A Direct Digitizing, 1MHz Bandwidth, 28fA/√Hz Current Sensing Front-End Based on a Mixed-Signal Integrator-Differentiator TIA in 28nm CMOS. - David-Peter Wiens; Ahmed Abdelaal; Bjoern Driemeyer; Joachim Becker; John G. Kauffman; Maurits Ortmanns (CICC, 2025)

Analysis of Dynamic Errors in Tri-level DACs for Continuous-Time Delta-Sigma Modulators. - Ahmed Abdelaal; Björn Driemeyer; Joschua Conrad; John G. Kauffman; Maurits Ortmanns (ISCAS, 2025)

PSumSim: A Simulator for Partial-Sum Quantization in Analog Matrix-Vector Multipliers. - Joschua Conrad; Simon Wilhelmstätter; Holger Mandry; Paul Kässer; Ahmed Abdelaal; Rohan Asthana; Vasileios Belagiannis; Maurits Ortmanns (ISCAS, 2025)

A Design Study of Power-Efficient Opamp Topologies for Discrete-Time ∆Σ Modulators. - Mahmoud Ghoneim; Omar Ismail; John G. Kauffman; Maurits Ortmanns (ISCAS, 2025)

Incremental ∆Σ ADCs without Periodic Reset. - Omar Ismail; Paul Kaesser; Markus Sporer; John G. Kauffman; Maurits Ortmanns (ISCAS, 2025)

Compensation of Excess Loop Delay in Continuous-Time Incremental ∆Σ ADCs. - Paul Kaesser; Omar Ismail; Joachim Becker; Maurits Ortmanns (ISCAS, 2025)

Does the Maximum Stable Amplitude depend on Reconstruction Filters in Incremental ∆Σ ADCs? - Paul Kaesser; Omar Ismail; Joachim Becker; Maurits Ortmanns (ISCAS, 2025)

A Wireless Headstage Based on a 32-Channel Neuromodulator Integrated Circuit. - Markus Sporer; Dominik Fritschi; Nicolas Graber; Stefan Reich; Maurits Ortmanns (ISCAS, 2025)

Non-Linearity Cancellation of Gm-C Based DSM. - Bishoy M. Zaky; John G. Kauffman; Francesco Conzatti; Maurits Ortmanns (ISCAS, 2025)

An Eye-Opening Arbiter PUF for Fingerprint Generation Using Auto-Error Detection for PVT-Robust Masking and Bit Stabilization Achieving a BER of 2e-8 in 28nm CMOS. - Bjoern Driemeyer; Holger Mandry; David-Peter Wiens; Joachim Becker; John G. Kauffman; Maurits Ortmanns (ISSCC, 2025)

1/2CcellV2DD? An Energy Model for Compute-in-Memory SRAM Cells. - Simon Wilhelmstätter; Joschua Conrad; Johannes Stark; Devanshi Upadhyaya; Maël Gay; Ilia Polian; Maurits Ortmanns (SMACD, 2025)

Protection of Oscillator-Based PUFs against Side Channel Analyses by Random Interruption. - Holger Mandry; Jonas Ruchti; Julius Nowakowski; Michael Pehl; Maurits Ortmanns (IACR Trans. Cryptogr. Hardw. Embed. Syst., 2025)

Dextr: Zero-Shot Neural Architecture Search with Singular Value Decomposition and Extrinsic Curvature. - Rohan Asthana; Joschua Conrad; Maurits Ortmanns; Vasileios Belagiannis (Trans. Mach. Learn. Res., 2025)

ΔΣ Modulators Employing MASH DSM DAC-Based Dual Quantization. - Ahmed Abdelaal; Michael Pietzko; John G. Kauffman; Ankesh Jain; Maurits Ortmanns (IEEE Trans. Circuits Syst. I Regul. Pap., 2025)

Differentiable Cost Model for Neural-Network Accelerator Regarding Memory Hierarchy. - Joschua Conrad; Simon Wilhelmstätter; Rohan Asthana; Vasileios Belagiannis; Maurits Ortmanns (IEEE Trans. Circuits Syst. I Regul. Pap., 2025)

Non-Linear Modeling and Analysis of Amplifier-Less Potentiostat Architectures. - Andrea Sannino; David-Peter Wiens; Maurits Ortmanns; José Ignacio Artigas; Aránzazu Otín (CoRR, 2025)