Papers
2011
128.
Witte,
P.;
Kauffman,
J. G.;
Becker,
J.;
Ortmanns,
M.
Correlation Based Background Error Estimation Technique for Bandpass Delta-Sigma ADC DACs
IEEE Trans. Circuits Syst. II, Express Briefs
November 2011
Correlation Based Background Error Estimation Technique for Bandpass Delta-Sigma ADC DACs
IEEE Trans. Circuits Syst. II, Express Briefs
November 2011
127.
Zahabi,
A.;
Jamal,
F.;
Anis,
M.;
Ortmanns,
M.
Integrated Microstrip/Coplanar/Tapered Transmission Lines for Bandpass Sigma-Delta Modulators
12. ITG/GMM-Fachtagung Analog, Erlangen, Germany
November 2011
Integrated Microstrip/Coplanar/Tapered Transmission Lines for Bandpass Sigma-Delta Modulators
12. ITG/GMM-Fachtagung Analog, Erlangen, Germany
November 2011
126.
Zahabi,
A.;
Anis,
M.;
Ortmanns,
M.
3.1GHz-3.8GHz Integrated Transmission Line Super-Regeneration Amplifier with Degenerative Quenching Technique for Impulse-FM-UWB Transceiver
European Solid-State Circuit Conf. (ESSCIRC), pp. 387-390, Helsinki, Finland
September 2011
3.1GHz-3.8GHz Integrated Transmission Line Super-Regeneration Amplifier with Degenerative Quenching Technique for Impulse-FM-UWB Transceiver
European Solid-State Circuit Conf. (ESSCIRC), pp. 387-390, Helsinki, Finland
September 2011
125.
Chu,
C.;
Kauffman,
J. G.;
Anis,
S.;
Ortmanns,
M.
A 4-bit, 500M/s Flash Quantizer Using an Auto-Zeroing Offset Compensated Comparator in 250nm SiGe
Kleinheubacher Tagung, Miltenberg, Germany
September 2011
A 4-bit, 500M/s Flash Quantizer Using an Auto-Zeroing Offset Compensated Comparator in 250nm SiGe
Kleinheubacher Tagung, Miltenberg, Germany
September 2011
124.
Ritter,
R.;
Ortmanns,
M.
Aktuelle Entwicklung zu frequenzumsetzenden Delta-Sigma ADCs für mobile Empfänger
Kleinheubacher Tagung, Miltenberg, Germany
September 2011
Aktuelle Entwicklung zu frequenzumsetzenden Delta-Sigma ADCs für mobile Empfänger
Kleinheubacher Tagung, Miltenberg, Germany
September 2011
123.
Xu,
H.;
Lange,
S.;
Pless,
H.;
Becker,
J.;
Hornig,
R.;
Hennig,
E.;
Ortmanns,
M.
An AC-Powered Optical Receiver Consuming 270µW for Transcutaneous 2Mb/s Data Transfer
45. DGBMT Jahrestagung (BMT 2011), Freiburg, Germany
September 2011
An AC-Powered Optical Receiver Consuming 270µW for Transcutaneous 2Mb/s Data Transfer
45. DGBMT Jahrestagung (BMT 2011), Freiburg, Germany
September 2011
122.
Sooksood,
K.;
Noorsal,
E.;
Hornig,
R.;
Becker,
J.;
Ortmanns,
M.
Integrated Front-end for a Highly Parallel Universal Functional Electrical Stimulation Platform
45. DGBMT Jahrestagung (BMT 2011), Freiburg, Germany
September 2011
Integrated Front-end for a Highly Parallel Universal Functional Electrical Stimulation Platform
45. DGBMT Jahrestagung (BMT 2011), Freiburg, Germany
September 2011
121.
Zahabi,
A.;
Anis,
M.;
Ortmanns,
M.
Integrated Transmission Line Super-Regeneration Amplifier for Impulse-FM-UWB Transceiver
Kleinheubacher Tagung, Miltenberg, Germany
September 2011
Integrated Transmission Line Super-Regeneration Amplifier for Impulse-FM-UWB Transceiver
Kleinheubacher Tagung, Miltenberg, Germany
September 2011
120.
Xu,
H.;
Ortmanns,
M.
Wide-band Wide-input Efficiency-enhanced CMOS Rectifier with Self-temperature and Process Compensation
IEEE Semiconductor Conference Dresden (SCD), Dresden, Germany
September 2011
Wide-band Wide-input Efficiency-enhanced CMOS Rectifier with Self-temperature and Process Compensation
IEEE Semiconductor Conference Dresden (SCD), Dresden, Germany
September 2011
119.
Brückner,
T.;
Zorn,
C.;
Mathis,
W.;
Ortmanns,
M.
A single DAC CT ΣΔ Modulator with Butterworth STF characteristic
The 54th IEEE International Midwest Symposium on Circuits and Systems (MWSCAS), Seoul, South Korea
August 2011
A single DAC CT ΣΔ Modulator with Butterworth STF characteristic
The 54th IEEE International Midwest Symposium on Circuits and Systems (MWSCAS), Seoul, South Korea
August 2011
118.
Zorn,
C.;
Stegmann,
S.;
Brückner,
T.;
Ortmanns,
M.;
Mathis,
W.
STF Optimization of 1-Bit CT ΣΔ Modulators Based on Scaled Loop Filter Coefficients
European Conference on Circuit Theory and Design, Linköping, Sweden
August 2011
STF Optimization of 1-Bit CT ΣΔ Modulators Based on Scaled Loop Filter Coefficients
European Conference on Circuit Theory and Design, Linköping, Sweden
August 2011
117.
Anis,
M.;
Ortmanns,
M.;
Wehn,
N.
A 2.5mW 2Mb/s Fully Integrated Impulse-FM-UWB Transceiver in 0.18µm CMOS
In Proceeding of International Microwave Symposium (IMS), Baltimore, USA
June 2011
A 2.5mW 2Mb/s Fully Integrated Impulse-FM-UWB Transceiver in 0.18µm CMOS
In Proceeding of International Microwave Symposium (IMS), Baltimore, USA
June 2011
116.
Witte,
P.;
Kauffman,
J. G.;
Becker,
J.;
Ortmanns,
M.
A digital background correction for DAC nonlinearities in lowpass and bandpass delta-sigma modulators - theory and implementation
The 9th Int. Conf. on Sampling Theory and Applications (SampTA), Singapore
May 2011
A digital background correction for DAC nonlinearities in lowpass and bandpass delta-sigma modulators - theory and implementation
The 9th Int. Conf. on Sampling Theory and Applications (SampTA), Singapore
May 2011
115.
Zorn,
C.;
Stegmann,
S.;
Brückner,
T.;
Ortmanns,
M.;
Mathis,
W.
A Novel Optimization Method for CT Sigma-Delta-Modulators Using a Switched System Model
The IEEE International Symposium on Circuits and Systems, Rio de Janeiro, Brazil
May 2011
A Novel Optimization Method for CT Sigma-Delta-Modulators Using a Switched System Model
The IEEE International Symposium on Circuits and Systems, Rio de Janeiro, Brazil
May 2011
114.
Sooksood,
K.;
Noorsal,
E.;
Becker,
J.;
Ortmanns,
M.
A Neural Stimulator Front-End with Arbitrary Pulse Shape, HV Compliance and Adaptive Supply Requiring 0.05mm2 in 0.35μm HVCMOS
IEEE Int. Conf. on Solid State Circuits (ISSCC), San Francisco, USA
February 2011
A Neural Stimulator Front-End with Arbitrary Pulse Shape, HV Compliance and Adaptive Supply Requiring 0.05mm2 in 0.35μm HVCMOS
IEEE Int. Conf. on Solid State Circuits (ISSCC), San Francisco, USA
February 2011
113.
Kauffman,
J. G.;
Witte,
P.;
Becker,
J.;
Ortmanns,
M.
An 8mW 50MS/s CT ΔΣ Modulator with 81dB SFDR and Digital Background DAC Linearization
IEEE Int. Conf. on Solid State Circuits (ISSCC), San Francisco, USA
February 2011
An 8mW 50MS/s CT ΔΣ Modulator with 81dB SFDR and Digital Background DAC Linearization
IEEE Int. Conf. on Solid State Circuits (ISSCC), San Francisco, USA
February 2011
112.
Lange,
S.;
Xu,
H.;
Lang,
C.;
Pless,
H.;
Becker,
J.;
Tiedtke,
H.-J.;
Hennig,
E.;
Ortmanns,
M.
An AC-Powered Optical Receiver Consuming 270μW for Transcutaneous 2Mb/s Data Transfer
IEEE Int. Conf. on Solid State Circuits (ISSCC), San Francisco, USA
February 2011
An AC-Powered Optical Receiver Consuming 270μW for Transcutaneous 2Mb/s Data Transfer
IEEE Int. Conf. on Solid State Circuits (ISSCC), San Francisco, USA
February 2011
111.
Stegmann,
S.;
Zorn,
C.;
Brückner,
T.;
Ortmanns,
M.;
Mathis,
W.
Anwendung einer Switched-System Modellierung zur Stabilitätsanalyse von zeitkontinuierlichen singlebit SD-Wandlern
Advances in Radio Science, Vol. 9, pp. 209-213
2011
Anwendung einer Switched-System Modellierung zur Stabilitätsanalyse von zeitkontinuierlichen singlebit SD-Wandlern
Advances in Radio Science, Vol. 9, pp. 209-213
2011
2010
110.
Xu,
H.;
Ortmanns,
M.
Highly Efficient Fully Integrated CMOS Rectifiers
Kleinheubacher Tagung 2010 (KHT 2010), Miltenberg, Germany
October 2010
Highly Efficient Fully Integrated CMOS Rectifiers
Kleinheubacher Tagung 2010 (KHT 2010), Miltenberg, Germany
October 2010
109.
Noorsal,
E.;
Sooksood,
K.;
Xu,
H.;
Ortmanns,
M.
A Universal Functional Electrical Stimulation Platform for Rapid Prototyping
DGBMT Jahrestagung (BMT 2010), Rostock-Warnemünde, Germany
October 2010
A Universal Functional Electrical Stimulation Platform for Rapid Prototyping
DGBMT Jahrestagung (BMT 2010), Rostock-Warnemünde, Germany
October 2010
108.
Bihr,
U.;
Ortmanns,
M.
Entwurf eines frequenz-separierten Aufnahmekanals für neuronale Signale in 0.35µm CMOS
Kleinheubacher Tagung 2010 (KHT 2010), Miltenberg, Germany
October 2010
Entwurf eines frequenz-separierten Aufnahmekanals für neuronale Signale in 0.35µm CMOS
Kleinheubacher Tagung 2010 (KHT 2010), Miltenberg, Germany
October 2010
107.
Anis,
M.;
Ortmanns,
M.;
Wehn,
N.
RF Spectrum Sensing Technique for Cognitive UWB Radio Network
In Proceeding of European Solid-State Circuits Conference (ESSCIRC), Sevilla, Spain
September 2010
RF Spectrum Sensing Technique for Cognitive UWB Radio Network
In Proceeding of European Solid-State Circuits Conference (ESSCIRC), Sevilla, Spain
September 2010
106.
Noorsal,
E.;
Ortmanns,
M.
An Architecture for a Universal Neural Stimulator with almost Arbitrary Current Waveform
32nd Annual Int. Conference of the IEEE Engineering in Medicine and Biology Society (EMBC 2010), Buenos Aires, Argentina
September 2010
An Architecture for a Universal Neural Stimulator with almost Arbitrary Current Waveform
32nd Annual Int. Conference of the IEEE Engineering in Medicine and Biology Society (EMBC 2010), Buenos Aires, Argentina
September 2010
105.
Witte,
P.;
Ortmanns,
M.
Background DAC Error Estimation Using a Pseudo Random Noise Based Correlation Technique for Sigma-Delta Analog-to-Digital Converters.
IEEE Transactions on Circuits and Systems I: Regular Papers, Vol. 57
July 2010
Background DAC Error Estimation Using a Pseudo Random Noise Based Correlation Technique for Sigma-Delta Analog-to-Digital Converters.
IEEE Transactions on Circuits and Systems I: Regular Papers, Vol. 57
July 2010
104.
Zahabi,
A.;
Anis,
M.;
Ortmanns,
M.
A Reconfigurable Integrated Transmission Line Sigma Delta Modulator for the UWB/WLAN Receiver
IEEE Conference on Ph.D. Research in Microelectronics & Electronics (PRIME), pp. 1-4, Berlin, Germany
July 2010
A Reconfigurable Integrated Transmission Line Sigma Delta Modulator for the UWB/WLAN Receiver
IEEE Conference on Ph.D. Research in Microelectronics & Electronics (PRIME), pp. 1-4, Berlin, Germany
July 2010
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