A Hardware Efficient Cascadable Chip Set For Ann'S With On-Chip Backpropagation. - Torsten Lehmann (Int. J. Neural Syst., 1993)

An analog CMOS chip set for neural networks with arbitrary topologies. - John A. Lansner; Torsten Lehmann (IEEE Trans. Neural Networks, 1993)

Nonlinear backpropagation: doing backpropagation without derivatives of the activation function. - John A. Hertz; Anders Krogh; Benny Lautrup; Torsten Lehmann (IEEE Trans. Neural Networks, 1997)

Integrating data converters for picoampere currents from electrochemical transducers. - Madalina Breten; Torsten Lehmann; Erik Bruun (ISCAS, 2000)

An implantable CMOS signal conditioning system for recording nerve signals with cuff electrodes. - Konstantinos Papathanasiou; Torsten Lehmann (ISCAS, 2000)

An implantable CMOS amplifier for nerve signals. - Jannik Hammel Nielsen; Torsten Lehmann (ICECS, 2001)

1-V power supply CMOS cascode amplifier. - Torsten Lehmann; Marco Cassia (IEEE J. Solid State Circuits, 2001)

1 V OTA Using Current Driven Bulk Circuits. - Torsten Lehmann; Marco Cassia (J. Circuits Syst. Comput., 2002)

A 5V charge pump in a standard 1.8-V 0.18-µm CMOS process. - T. Hasan; Torsten Lehmann; Chee Yee Kwok (ISCAS (2), 2005)

On-chip active power rectifiers for biomedical applications. - Torsten Lehmann; Yashodhan Moghe (ISCAS (1), 2005)

The Design and Testing of an Epi-Retinal Vision Prosthesis Neurostimulator Capable of Concurrent Parallel Stimulation. - Norbert Dommel; Yan Tat Wong; Phil Byrnes-Preston; Torsten Lehmann; Nigel H. Lovell; Gregg J. Suaning (EMBC, 2006)

Microelectronic Retinal Prosthesis: II. Use of High-Voltage CMOS in Retinal Neurostimulators. - Norbert Dommel; Yan Tat Wong; Torsten Lehmann; Phil Byrnes-Preston; Nigel H. Lovell; Gregg J. Suaning (EMBC, 2006)

Microelectronic Retinal Prosthesis: I. A Neurostimulator for the Concurrent Activation of Multiple Electrodes. - Yan Tat Wong; Norbert Dommel; Phil Byrnes-Preston; Torsten Lehmann; Nigel H. Lovell; Gregg J. Suaning (EMBC, 2006)

Analog circuits for thermistor linearization with Chebyshev-optimal linearity error. - Carl Renneberg; Torsten Lehmann (ECCTD, 2007)

Implant electronics for intraocular epiretinal neuro-stimulators. - Torsten Lehmann; Nigel H. Lovell; Gregg J. Suaning; Philip Preston; Yan Tat Wong; Norbert Dommel; Louis H. Jung; Yashodhan Moghe; Kushal Das (ISCAS, 2008)

A novel safety system concept and implementation for implantable stimulators: A universal DC tissue leakage current detector. - Yashodhan Moghe; Torsten Lehmann (ISCAS, 2008)

A cryogenic D/A converter with novel charge injection reduction technique for silicon quantum computer controller circuit. - Md. Tanvir Rahman; Torsten Lehmann (APCCAS, 2010)

SOS current mirror matching at 4K: A brief study. - Kushal Das; Torsten Lehmann (ISCAS, 2010)

Current-limited passive charge recovery for implantable neuro-stimulators: Power savings, modelling and characterisation. - Torsten Lehmann; Hosung Chun; Philip Preston; Gregg J. Suaning (ISCAS, 2010)

Laser-micromachined, chip-scaled ceramic carriers for implantable neurostimulators. - Thomas Guenther; Apoorv Mintri; William W. Lim; Louis H. Jung; Torsten Lehmann; Nigel H. Lovell; Gregg J. Suaning (EMBC, 2011)

Towards a chip scale neurostimulator: System architecture of a current-driven 98 channel neurostimulator via a two-wire interface. - Louis H. Jung; Nitzan Shany; Torsten Lehmann; Phil Preston; Nigel H. Lovell; Gregg J. Suaning (EMBC, 2011)

A semi-static threshold-triggered delay element for low power applications. - Louis H. Jung; Torsten Lehmann; Gregg J. Suaning; Nigel H. Lovell (ISCAS, 2011)

Nanosecond Delay Floating High Voltage Level Shifters in a 0.35 μ m HV-CMOS Technology. - Yashodhan Moghe; Torsten Lehmann; Tim Piessens (IEEE J. Solid State Circuits, 2011)

A synchronous buck-boost converter on a Silicon-On-Sapphire 0.5µm process. - Libin George; Torsten Lehmann; Tara Julia Hamilton (APCCAS, 2012)

Low-power circuit structures for chip-scale stimulating implants. - Torsten Lehmann; Louis H. Jung; Yashodhan Moghe; Hosung Chun; Yuanyuan Yang; Asish Zac Alex (APCCAS, 2012)

A method for measuring switching frequency using complex asynchronous logic circuits. - Nonie Politi; Julian Jenkins; André van Schaik; Torsten Lehmann; Tara Julia Hamilton (APCCAS, 2012)

Required matching accuracy of biphasic current pulse in multi-channel current mode bipolar stimulation for safety. - Hosung Chun; Yuanyuan Yang; Torsten Lehmann (EMBC, 2012)

A reconfigurable buck-boost switched capacitor converter with adaptive gain and discrete frequency scaling control. - Libin George; Torsten Lehmann; Tara Julia Hamilton (ICECS, 2012)

A cryogenic single electron transistor readout circuit: Practical issues and measurement considerations. - Kushal Das; Torsten Lehmann (ISCAS, 2012)

A 1.2V 2-bit phase interpolator for 65nm CMOS. - Andrew P. Nicholson; Julian Jenkins; André van Schaik; Tara Julia Hamilton; Torsten Lehmann (ISCAS, 2012)

Towards the implementation of a cryogenic D/A converter for silicon quantum computer controller. - Md. Tanvir Rahman; Torsten Lehmann (MWSCAS, 2012)

Power Saving Circuit Design Techniques for Implantable Neuro-Stimulators. - Torsten Lehmann; Hosung Chun; Yuanyuan Yang (J. Circuits Syst. Comput., 2012)

A 0.3mm2 10-b 100MS/s pipelined ADC using Nauta structure op-amps in 180nm CMOS. - Andrew P. Nicholson; Julian Jenkins; Astria Nur Irfansyah; Nonie Politi; André van Schaik; Tara Julia Hamilton; Torsten Lehmann (ISCAS, 2013)

High current driving charge pumps in distributed biomedical implants using silicon-on-sapphire technology. - Asish Zac Alex; Torsten Lehmann (MWSCAS, 2013)

Mismatch insensitive automatic tuning control for the single electron transistor readout circuit. - Kushal Das; Torsten Lehmann (MWSCAS, 2013)

Accurate sensor readout circuitry for reliability measurement of hermetically sealed chip-scale biomedical implants. - Kushal Das; Torsten Lehmann; Cesar Ramos Rodrigues (MWSCAS, 2013)

Design strategy for enhanced output impedance current-steering DAC in sigma-delta converters. - Astria Nur Irfansyah; Torsten Lehmann; Julian Jenkins; Tara Julia Hamilton (MWSCAS, 2013)

Design and simulation of an inductive link using fully integrated receiver coil in biomedical implants. - Xuepeng Li; Torsten Lehmann (MWSCAS, 2013)

A 7.8V neurostimulator based on cascoded low-voltage Silicon-on-Sapphire MOS transistors. - Cesar Ramos Rodrigues; Asish Zac Alex; Torsten Lehmann (MWSCAS, 2013)

A 2.6V Silicon-on Sapphire CMOS current imbalance sensing circuit for neurostimulation applications. - Cesar Ramos Rodrigues; Torsten Lehmann; Kushal Das; Gregg J. Suaning (MWSCAS, 2013)

The Ripple Pond: Enabling Spiking Networks to See. - Saeed Afshar; Gregory Cohen; Runchun Wang; André van Schaik; Jonathan Tapson; Torsten Lehmann; Tara Julia Hamilton (CoRR, 2013)

Design of Safe Two-Wire Interface-Driven Chip-Scale Neurostimulator for Visual Prosthesis. - Louis H. Jung; Nitzan Shany; Alexander Emperle; Torsten Lehmann; Phil Byrnes-Preston; Nigel H. Lovell; Gregg J. Suaning (IEEE J. Solid State Circuits, 2013)

Dual-Stacked Current Recycling Linear Regulators With 48% Power Saving for Biomedical Implants. - Yuanyuan Yang; Hosung Chun; Torsten Lehmann (IEEE Trans. Circuits Syst. I Regul. Pap., 2013)

High-voltage tolerant switch configuration using standard 3.3-V 0.5-μm silicon-on-sapphire CMOS transistors. - Asish Zac Alex; Torsten Lehmann (APCCAS, 2014)

Calibration of the Nauta structure differential OTA. - Artemij Iberzanov; Andrew P. Nicholson; Julian Jenkins; Torsten Lehmann; Tara Julia Hamilton (APCCAS, 2014)

Neuromodulation of the retina from the suprachoroidal space: The Phoenix 99 implant. - Gregg J. Suaning; Nigel H. Lovell; Torsten Lehmann (BioCAS, 2014)

A simple digital architecture for a harmonic-cancelling sine-wave synthesizer. - Pasindu Aluthwala; Neil Weste; Andrew Adams; Torsten Lehmann; Sri Parameswaran (ISCAS, 2014)

Nauta OTA in a second-order continuous-time delta-sigma modulator. - Astria Nur Irfansyah; Long Pham; Andrew P. Nicholson; Torsten Lehmann; Julian Jenkins; Tara Julia Hamilton (MWSCAS, 2014)

A digital to transconductance converter for nauta structure op-amps in 65nm CMOS. - Andrew P. Nicholson; Julian Jenkins; André van Schaik; Tara Julia Hamilton; Torsten Lehmann (MWSCAS, 2014)

A 10 bit cryogenic CMOS D/A converter. - Md. Tanvir Rahman; Torsten Lehmann (MWSCAS, 2014)

A reconfigurable buck-boost switched capacitor converter architecture for multiple, distributed on-chip load applications. - Libin George; Torsten Lehmann; Tara Julia Hamilton (NEWCAS, 2014)

Safety Ensuring Retinal Prosthesis With Precise Charge Balance and Low Power Consumption. - Hosung Chun; Yuanyuan Yang; Torsten Lehmann (IEEE Trans. Biomed. Circuits Syst., 2014)

Sub-Nanoampere One-Shot Single Electron Transistor Readout Electrometry Below 10 Kelvin. - Kushal Das; Torsten Lehmann; Andrew Steven Dzurak (IEEE Trans. Circuits Syst. I Regul. Pap., 2014)

A novel method for non-invasive respiration monitoring. - Andrew J. Cook; Gaetano D. Gargiulo; Rebekah Cook; Ben Ng; Diane Hindmarsh; Torsten Lehmann; Tara Julia Hamilton (EMBC, 2015)

Design of a digital harmonic-cancelling sine-wave synthesizer with 100 MHz output frequency, 43.5 dB SFDR, and 2.26 mW power. - Pasindu Aluthwala; Neil Weste; Andrew Adams; Torsten Lehmann; Sri Parameswaran (ISCAS, 2015)

Subthreshold operation of Nauta's operational transconductance amplifier. - Astria Nur Irfansyah; Andrew P. Nicholson; Julian Jenkins; Tara Julia Hamilton; Torsten Lehmann (NEWCAS, 2015)

Concept Design for a 1-Lead Wearable/Implantable ECG Front-End: Power Management. - Libin George; Gaetano Dario Gargiulo; Torsten Lehmann; Tara Julia Hamilton (Sensors, 2015)

The effect of amplitude resolution and mismatch on a digital-to-analog converter used for digital harmonic-cancelling sine-wave synthesis. - Pasindu Aluthwala; Neil Weste; Andrew Adams; Torsten Lehmann; Sri Parameswaran (ISCAS, 2016)

Hybrid dual-mode low voltage dropout regulator with infinite impulse response digital filters. - David Kwong-Heng Phoon; Torsten Lehmann; Tara Julia Hamilton; Julian Jenkins (LASCAS, 2016)

A 0.04 mm2 Buck-Boost DC-DC Converter for Biomedical Implants Using Adaptive Gain and Discrete Frequency Scaling Control. - Libin George; Gaetano Dario Gargiulo; Torsten Lehmann; Tara Julia Hamilton (IEEE Trans. Biomed. Circuits Syst., 2016)

A Statistical Design Approach for a Digitally Programmable Mismatch-Tolerant High-Speed Nauta Structure Differential OTA in 65-nm CMOS. - Andrew P. Nicholson; Artemij Iberzanov; Julian Jenkins; Tara Julia Hamilton; Torsten Lehmann (IEEE Trans. Very Large Scale Integr. Syst., 2016)

The effect of source resistance on the linearity of Nauta structure OTA. - Long Pham; Astria Nur Irfansyah; Tara Julia Hamilton; Torsten Lehmann (MWSCAS, 2017)

Partial Dynamic Element Matching Technique for Digital-to-Analog Converters Used for Digital Harmonic-Cancelling Sine-Wave Synthesis. - Pasindu Aluthwala; Neil Weste; Andrew Adams; Torsten Lehmann; Sri Parameswaran (IEEE Trans. Circuits Syst. I Regul. Pap., 2017)

A Self-Calibrated Cryogenic Current Cell for 4.2 K Current Steering D/A Converters. - Md. Tanvir Rahman; Torsten Lehmann (IEEE Trans. Circuits Syst. II Express Briefs, 2017)

A Statistical Design Approach Using Fixed and Variable Width Transconductors for Positive-Feedback Gain-Enhancement OTAs. - Andrew P. Nicholson; Astria Nur Irfansyah; Julian Jenkins; Tara Julia Hamilton; Torsten Lehmann (IEEE Trans. Very Large Scale Integr. Syst., 2017)

A reconfigurable dual-output buck-boost switched-capacitor converter using adaptive gain and discrete frequency scaling control. - Libin George; Torsten Lehmann; Tara Julia Hamilton (Microelectron. J., 2018)

Cryogenic Support Circuits and Systems for Silicon Quantum Computers. - Torsten Lehmann (ISCAS, 2019)

High Gain Operational Amplifiers in 22 nm CMOS. - Edward Yang; Torsten Lehmann (ISCAS, 2019)

On-Chip Digitally Controlled Operational Amplifier Characterisation Circuit without Additional Pins. - Edward Yang; Torsten Lehmann (MWSCAS, 2020)

Impedance Properties of Multi-Optrode Biopotential Sensing Arrays. - Reem M. Almasri; Amr Al Abed; Yuan Wei; Han Wang; Josiah Firth; Laura A. Poole-Warren; François Ladouceur; Torsten Lehmann; Nigel H. Lovell (IEEE Trans. Biomed. Eng., 2022)

Active Noise Cancelling Method for An Electro-Optical Detection System. - Ruixing Yang; Yingge Chen; François Ladouceur; Nigel H. Lovell; Amr Al Abed; Torsten Lehmann (NorCAS, 2023)

Entropy Sources from Tunnelling in Standard CMOS Structures. - Julian Keledjian; Torsten Lehmann (Circuits Syst. Signal Process., 2024)