Ultra low voltage switched opamp ΣΔ modulator for portable applications. - Jens Sauerbrey; Roland Thewes (CICC, 2001)

A low-voltage MOSFET-only Sigma-Delta modulator for speech band applications using depletion-mode MOS-capacitors in combined series and parallel compensation. - Thomas Tille; Jens Sauerbrey; Doris Schmitt-Landsiedel (ISCAS (1), 2001)

A 1.8-V MOSFET-only ΣΔ modulator using substrate biased depletion-mode MOS capacitors in series compensation. - Thomas Tille; Jens Sauerbrey; Doris Schmitt-Landsiedel (IEEE J. Solid State Circuits, 2001)

A 0.7-V MOSFET-only switched-opamp ΣΔ modulator in standard digital CMOS technology. - Jens Sauerbrey; Thomas Tille; Doris Schmitt-Landsiedel; Roland Thewes (IEEE J. Solid State Circuits, 2002)

0.65V sigma-delta modulators. - Jens Sauerbrey; Martin Wittig; Doris Schmitt-Landsiedel; Roland Thewes (ISCAS (1), 2003)

A 0.5-V 1-μW successive approximation ADC. - Jens Sauerbrey; Doris Schmitt-Landsiedel; Roland Thewes (IEEE J. Solid State Circuits, 2003)

Design of low-voltage MOSFET-only ΣΔ modulators in standard digital CMOS technology. - Thomas Tille; Jens Sauerbrey; Manfred Mauthe; Doris Schmitt-Landsiedel (IEEE Trans. Circuits Syst. I Regul. Pap., 2004)

A 0.6V 100dB 5.2MHz transconductance amplifier realized in a multi-VT process. - Agnese Bargagli-Stoffi; Jens Sauerbrey; Roland Thewes; Doris Schmitt-Landsiedel (ESSCIRC, 2005)

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 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)

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