Papers
2018
304.
A. Herkle,
J. Becker and
M. Ortmanns,
"Methoden zur Verbesserung von CMOS integrierten Arbiter-PUFs",
16. GMM/ITG-Fachtagung Analog, München, Germany,
Sep.
2018.
| DOI: | 10.18725/OPARU-17977 |
303.
D. Djekic,
G. Fantner,
K. Lips,
M. Ortmanns and
J. Anders,
"A 0.1% THD, 1-MOhm to 1-GOhm Tunable, Temperature-Compensated Transimpedance Amplifier Using a Multi-Element Pseudo-Resistor",
IEEE Journal of Solid-State Circuits, vol. 53, no. 7, pp. 1913-1923,
Jul.
2018.
302.
Y. Luo,
L. Qi,
A. Jain and
M. Ortmanns,
"A High-Resolution Delta-Sigma D/A Converter Architecture with High Tolerance to DAC Mismatch",
2018 IEEE International Symposium on Circuits and Systems (ISCAS), Florence, Italy, pp. 1-5,
May
2018.
301.
A. Herkle,
J. Becker and
M. Ortmanns,
"An Arbiter PUF employing eye-opening oscillation for improved noise suppression",
IEEE International Symposium on Circuits and Systems (ISCAS), Florence, Italy,
May
2018.
| DOI: | 10.18725/OPARU-17954 |
300.
M. Rajabzadeh,
D. Djekic,
M. Häberle,
J. Becker,
J. Anders and
M. Ortmanns,
"Comparison Study of Integrated Potentiostats: Resistive-TIA, Capacitive-TIA, CT Σ∆ Modulator",
IEEE International Symposium on Circuits & Systems (ISCAS), Florence, Italy,
May
2018.
299.
P. Vogelmann,
J. Wagner,
A. Hänsler and
M. Ortmanns,
"Improved SQNR and MSA in Incremental ΔΣ Modulators by Using a Recuperation Phase",
IEEE Transactions on Circuits and Systems—II: Express Briefs, Vol. 65, No. 5,
May
2018.
298.
J. Chi,
A. Jain,
J. Sauerbrey,
J. Becker and
M. Ortmanns,
"Interferer Induced Jitter Reduction in Bandpass CT ΣΔ Modulators for Receiver Applications",
2018 IEEE International Symposium on Circuits and Systems (ISCAS), Florence, Italy, pp. 1-4,
May
2018.
297.
J. Wagner,
M. Ortmanns and
J. M. de la Rosa,
"Man or Machine — Design Automation of Delta-Sigma Modulators",
IEEE International Symposium on Circuits and Systems (ISCAS), Florence, Italy, pp. 1-5,
May
2018.
296.
P. Vogelmann,
J. Wagner,
A. Hänsler and
M. Ortmanns,
"On Incremental ∆Σ Modulators with SNR and SQNR Enhancement by Recuperation Phase",
IEEE International Symposium on Circuits and Systems (ISCAS), Florence, Italy,
May
2018.
| File: |  https://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.010/downloads/Vogelmann_ISCAS_2018-05.pdf |
295.
M. A. Mokhtar and
M. Ortmanns,
"Study of Single Opamp Resonators in CT Sigma-Delta Modulators",
Analogworkshop 2018, Albert-Ludwigs-Universität Freiburg, Germany,
Mar.
2018.
294.
P. Vogelmann,
M. Haas and
M. Ortmanns,
"A 1.1mW 200kS/s Incremental ΔΣ ADC with a DR of 91.5dB Using Integrator Slicing for Dynamic Power Reduction",
IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, USA,
Feb.
2018.
293.
L. Lv,
A. Jain,
X. Zhou,
J. Becker,
Q. Li and
M. Ortmanns,
"A 0.4-VGm–CProportional-Integrator-Based Continuous-TimeΔΣModulator With 50-kHz BW and 74.4-dB SNDR",
IEEE Journal of Solid-State Circuits, Volume: 53 , Issue: 11, Page s: 3256 - 3267,
2018.
292.
M. Haas,
P. Vogelmann and
M. Ortmanns,
"A Neuromodulator Frontend with Reconfigurable Class-B Current and Voltage Controlled Stimulator",
IEEE Solid-State Circuits Letters,
2018.
291.
A. Al Marashli,
J. Anders,
J. Becker and
M. Ortmanns,
"A Nyquist rate SAR ADC employing incremental ΣΔ DAC achieving peak SFDR = 107 dB at 80 kS/s",
IEEE Journal of Solid-State Circuits, Volume: 53, Issue: 5, Page s: 1493 - 1507,
2018.
290.
A. Lanniel,
T. Alpert,
T. Boeser and
M. Ortmanns,
"Evaluation of Frontend Readout Circuits for High Performance Automotive MEMS Accelerometers",
14th Conference on Ph.D. Research in Microelectronics and Electronics (PRIME), Prague, Czech Republic, pp. 229-232,
2018.
| DOI: | 10.1109/PRIME.2018.8430313 |
2017
289.
M. Pagin and
M. Ortmanns,
"A Neural Data Lossless Compression Scheme Based on Spatial and Temporal Prediction",
2017 IEEE Biomedical Circuits and Systems Conference (BioCAS), Torino, Italy,
Oct.
2017.
288.
J. Becker,
D. Pellhammer,
P. Preißner,
J. C. Glöggler,
B. G. Lapatki and
M. Ortmanns,
"An implant for wireless in situ measurement of lip pressure with 12 sensors",
2017 IEEE Biomedical Circuits and Systems Conference (BioCAS), Torino, Italy,
Oct.
2017.
287.
M. Rajabzadeh,
J. Becker and
M. Ortmanns,
"Evaluation of Single-Bit Sigma-Delta Modulator DAC for Electrical Impedance Spectroscopy",
2017 IEEE Biomedical Circuits and Systems Conference (BioCAS), Torino, Italy,
Oct.
2017.
286.
J. Handwerker,
B. Schlecker and
M. Ortmanns,
"Integrated Circuit Technology for Next Generation Point-of-Care Spectroscopy Applications",
IEEE Communications Magazine, vol. 55, no. 10, pp. 143–151,
Oct.
2017.
285.
B. Schlecker,
A. Chu,
J. Handwerker,
S. Künstner,
M. Ortmanns,
K. Lips and
J. Anders,
"Live Demonstration: a VCO-Based Point-of-Care ESR Spectrometer",
2017 IEEE SENSORS, Glasgow, Scotland, UK,
Oct.
2017.
284.
A. Chu,
B. Schlecker,
J. Handwerker,
S. Künstner,
M. Ortmanns,
K. Lips and
J. Anders,
"Live demonstration: A VCO-based point-of-care ESR spectrometer",
2017 IEEE Biomedical Circuits and Systems Conference (BioCAS), Torino, Italy,
Oct.
2017.
283.
A. Chu,
B. Schlecker,
J. Handwerker,
S. Künstner,
M. Ortmanns,
K. Lips and
J. Anders,
"VCO-Based ESR-on-a-Chip As a Tool for Low-Cost, High-Sensitivity Food Quality Control",
2017 IEEE Biomedical Circuits and Systems Conference (BioCAS), Torino, Italy,
Oct.
2017.
282.
B. Schlecker,
A. Chu,
J. Handwerker,
S. Künstner,
M. Ortmanns,
K. Lips and
J. Anders,
"VCO-Based ESR-on-a-Chip As a Tool for Low-Cost, High-Sensitivity Point-of-Care Diagnostics",
IEEE SENSORS 2017, Glasgow, Scotland, UK,
Oct.
2017.
281.
A. Al Marashli,
J. Anders,
J. Becker and
M. Ortmanns,
"A high linearity SAR ADC employing Sigma-Delta DAC",
Kleinheubacher Tagung, Miltenberg, Germany,
Sep.
2017.
280.
D. Djekic,
G. Fantner,
J. Behrends,
K. Lips,
M. Ortmanns and
J. Anders,
"A Transimpedance Amplifier Using a Widely Tunable PVT-Independent Pseudo-Resistor for High-Performance Current Sensing Applications",
43rd European Solid State Circuits Conference (ESSCIRC), Leuven, Belgium,
Sep.
2017.
Books
2025
10.
Buhmann,
A.;
Lanniel,
A.;
Hiller,
T.;
Sporer,
M.;
Reich,
S.;
Ortmanns,
M.
Interface Circuits
Publisher: Ed. Elsevier
in Comprehensive Microsystems, 2nd ed., Y. B. Gianchandani, Volume 1, 2025, pp. 452–479 Edition
2025
Interface Circuits
Publisher: Ed. Elsevier
in Comprehensive Microsystems, 2nd ed., Y. B. Gianchandani, Volume 1, 2025, pp. 452–479 Edition
2025
| DOI: | 10.1016/B978-0-323-95478-5.00040-6 |
2023
9.
Chan,
C.-H.;
Zhu,
Y.;
Qi,
L.;
Sin,
S.-W.;
Ortmanns,
M.;
Martins,
R. P.
High-Performance Oversampling ADCs
Paulo da Silva Martins, R., Mak, PI. (eds) Analog and Mixed-Signal Circuits in Nanoscale CMOS. Analog Circuits and Signal Processing. Springer, Cham. Edition
January 2023
High-Performance Oversampling ADCs
Paulo da Silva Martins, R., Mak, PI. (eds) Analog and Mixed-Signal Circuits in Nanoscale CMOS. Analog Circuits and Signal Processing. Springer, Cham. Edition
January 2023
| DOI: | doi.org/10.1007/978-3-031-22231-3_5 |
2021
8.
Haas,
M.;
Ortmanns,
M.
Neural Stimulation Circuits
Publisher: River Publishers
Selected Topics in Biomedical Circuits and Systems, Eds Minkyu Je and Myung Hoon Sunwoo Edition
February 2021
Neural Stimulation Circuits
Publisher: River Publishers
Selected Topics in Biomedical Circuits and Systems, Eds Minkyu Je and Myung Hoon Sunwoo Edition
February 2021
| ISBN: | 9788770221481 |
2019
7.
Vogelmann,
P.;
Mokhtar,
M. A.;
Luo,
Y.;
Ortmanns,
M.
Next-Generation ADCs, High-Performance Power Management, and Technology Considerations for Advanced Integrated Circuits: Advances in Analog Circuit Design 2019
Publisher: Springer
2019
Next-Generation ADCs, High-Performance Power Management, and Technology Considerations for Advanced Integrated Circuits: Advances in Analog Circuit Design 2019
Publisher: Springer
2019
| ISBN: | 978-3030252663 |
2016
6.
Ortmanns,
M.;
Ritter,
R.;
Chi,
J.
ΣΔ ADCs with Improved Interferer Robustness
Volume Wideband Continuous-time SD-ADCs, Automotive Electronics, and Power Management: Advances in Analog Circuit Design 2016
Publisher: Springer
2016
ΣΔ ADCs with Improved Interferer Robustness
Volume Wideband Continuous-time SD-ADCs, Automotive Electronics, and Power Management: Advances in Analog Circuit Design 2016
Publisher: Springer
2016
| ISBN: | 978-3319416694 |
2014
5.
Brückner,
T.;
Ortmanns,
M.
Automated Design of High-Speed Continuous-Time Sigma-Delta Modulators employing Compensation and Correction of Non-Idealities, in High-Performance AD and DA Converters, IC Design in Scaled Technologies, and Time-Domain Signal Processing
Publisher: Springer
2014
Automated Design of High-Speed Continuous-Time Sigma-Delta Modulators employing Compensation and Correction of Non-Idealities, in High-Performance AD and DA Converters, IC Design in Scaled Technologies, and Time-Domain Signal Processing
Publisher: Springer
2014
2007
4.
Ortmanns,
M.;
Buhmann,
A.;
Manoli,
Y.
Interface Circuits in Comprehensive Microsystems
Publisher: Elsevier Pubs.
2007
Interface Circuits in Comprehensive Microsystems
Publisher: Elsevier Pubs.
2007
2006
3.
Buhmann,
A.;
Keller,
M.;
Ortmanns,
M.;
Gerfers,
F.;
Manoli,
Y.
Time-Continuous Delta-Sigma A/D Converters - From Theory to Practical Implementation
Publisher: in Advanced Signal Processing, Circuits, and Systems Design Techniques for Communications, (eds. Paliouras, V.; Stouraitis, Th.; Ioinovici, A.)
2006
Time-Continuous Delta-Sigma A/D Converters - From Theory to Practical Implementation
Publisher: in Advanced Signal Processing, Circuits, and Systems Design Techniques for Communications, (eds. Paliouras, V.; Stouraitis, Th.; Ioinovici, A.)
2006
2005
2.
Ortmanns,
M.;
Gerfers,
F.
Continuous-Time Sigma-Delta A/D Conversion, Fundamentals, Error Correction and Robust Implementations
Publisher: Springer Pubs.
2005
Continuous-Time Sigma-Delta A/D Conversion, Fundamentals, Error Correction and Robust Implementations
Publisher: Springer Pubs.
2005
2003
1.
Ortmanns,
M.
Error Compensation in Continuous-Time Sigma-Delta A/D Converters
Publisher: PhD Thesis, Albert-Ludwigs-University Freiburg
2003
Error Compensation in Continuous-Time Sigma-Delta A/D Converters
Publisher: PhD Thesis, Albert-Ludwigs-University Freiburg
2003
Patents
- A. Herkle, J. Becker, M. Ortmanns
[DE] Verfahren und Vorrichtung zur Erzeugung einer digitalen Signatur
DE102016204055A1, Patent record available from the German Patent
2016 - R. Ritter, M. Schimper, W. Schelmbauer, M. Ortmanns
Analog-to-digital converter, signal processor, and method for analog-to-digital conversion.
US8760330, Patent record available from the US Patent Office
2014 - A. Rocke, M. Ortmanns und N. Unger
Device for controlling the electric charge on stimulation electrodes.
EP1827591, Patent record available from the European Patent
2007 - M. Ortmanns, Y. Manoli und F. Gerfers
Controlled power source, in particular for a digital/analogue converter in continuous time sigma/delta modulators.
EP1550222, Patent record available from the European Patent
2005 - A. Rocke, M. Ortmanns und N. Unger
Device for controlling the electric charge on stimulation electrodes.
WO06063743, Patent record available from the World Intellectual Property Organization (WIPO)
2006 - M. Ortmanns und Y. Manoli
Method for the characterisation of and for the automatic correction of linear errors in analog/digital converters.
WO05078936, Patent record available from the World Intellectual Property Organization (WIPO)
2005 - M. Ortmanns, Y. Manoli und F. Gerfers
Controlled power source, in particular for a digital/analogue converter in continuous time sigma/delta modulators.
WO04034588, Patent record available from the World Intellectual Property Organization (WIPO)
2004 - M. Ortmanns, Y. Manoli und F. Gerfers
Controlled current source, in particular for digital/analogue converters in continuous-time sigma/delta modulators.
US7151474, Patent record available from the US Patent Office
2006 - M. Ortmanns, Y. Manoli und F. Gerfers
Controlled power source, in particular for a digital/analogue converter in continuous time sigma delta modulators.
US20060055580, Patent record available from the US Patent Office
2006