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 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 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 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)

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)

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

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 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)

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)

A Multi-mode GSM to LTE100 ADC. - Jens Sauerbrey; Jacinto San Pablo Garcia; Udo Schutz; Hasham Khushk; John G. Kauffman (ESSCIRC, 2018)

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)

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

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)

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)

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)

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 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)

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)

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)

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)

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

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)

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)

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)

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)

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)

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)

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)