Papers
2014
204.
H. Xu,
M. Lorenz,
U. Bihr,
J. Anders and
M. Ortmanns,
"Wide-Band Efficiency-Enhanced CMOS Rectifier",
IEEE International Symposium on Circuits and Systems (ISCAS), Melbourne, Australia,
Jun.
2014.
203.
T. Brückner,
C. Zorn,
J. Anders,
J. Becker,
W. Mathis and
M. Ortmanns,
"A GPU-Accelerated Web-Based Synthesis Tool for CT Sigma-Delta Modulators",
Circuits and Systems I: Regular Papers, IEEE Transactions on, vol.61, no.5, pp.1429,1441,
May
2014.
202.
B. Schlecker,
M. Dukic,
B. Erickson,
M. Ortmanns,
G. Fantner and
J. Anders,
"Single-Cycle-PLL Detection for Real-Time FM-AFM Applications",
Biomedical Circuits and Systems, IEEE Transactions on, Vol. PP, no. 99,
Apr.
2014.
https://ieeexplore.ieee.org/document/6800103.
201.
J. G. Kauffman,
P. Witte,
M. Lehmann,
J. Becker,
Y. Manoli and
M. Ortmanns,
"A 72 dB DR, CT ΔΣ Modulator Using Digitally Estimated, Auxiliary DAC Linearization Achieving 88 fJ/conv-step in a 25 MHz BW",
IEEE Journal of Solid-State Circuits, Vol. 49, No. 2,
Feb.
2014.
https://ieeexplore.ieee.org/document/6674069.
200.
A. Elkafrawy,
J. Anders and
M. Ortmanns,
"A High Speed Current Steering DAC Based Current Mode SAR ADC",
Analog Circuits Workshop, Vienna, Austria,
Feb.
2014.
2013
199.
M. Lorenz,
T. Brückner,
J. Anders and
M. Ortmanns,
"An Advanced Unscented Kalman Filter Algorithm for Parameter Estimation in Continuous-Time Sigma-Delta Modulators",
20th IEEE International Conference on Electronics, Circuits and Systems (ICECS), Abu Dhabi, UAE,
Dec.
2013.
198.
A. Elkafrawy,
J. Anders,
T. Brückner and
M. Ortmanns,
"Design of a Current Steering DAC for a High Speed Current Mode SAR ADC",
20th IEEE International Conference on Electronics, Circuits and Systems (ICECS), Abu Dhabi, UAE,
Dec.
2013.
197.
T. Brückner,
M. Kiebler,
M. Lorenz,
C. Zorn,
J. Anders,
W. Mathis and
M. Ortmanns,
"Discrete-Time Simulation of Continuous-Time ΣΔ Modulators With Arbitrary Input Signals",
20th IEEE International Conference on Electronics, Circuits and Systems (ICECS), Abu Dhabi, UAE,
Dec.
2013.
196.
J. Anders,
G. Boero,
J. Handwerker and
M. Ortmanns,
"A fully-integrated detector for NMR microscopy in 0.13 µm CMOS",
IEEE Asian Solid-State Circuits Conference (A-SSCC) 2013, Singapore,
Nov.
2013.
195.
J. G. Kauffman,
C. Chu,
J. Becker and
M. Ortmanns,
"A 67 dB DR 50MHz BW CT Delta Sigma Modulator Achieving 207 fJ/conv",
Asian Solid-State Circuits Conference, Singapore,
Nov.
2013.
194.
J. Handwerker,
M. Eschelbach,
P. Chang,
A. Henning,
K. Scheffler,
M. Ortmanns and
J. Anders,
"An Active TX/RX NMR Probe for Real-Time Monitoring of MRI Field Imperfections",
IEEE Biomediocal Circuits and Systems Conference (BiOCAS) 2013, Rotterdam, The Netherlands,
Oct.
2013.
193.
T. Liu,
J. Anders and
M. Ortmanns,
"Design Optimization of the Optical Receiver in Transcutaneous Telemetric Links",
IEEE Biomediocal Circuits and Systems Conference (BiOCAS) 2013, Rotterdam, The Netherlands,
Oct.
2013.
192.
U. Bihr,
J. Anders,
J. Becker and
M. Ortmanns,
"A high-voltage neural stimulator combined with a low voltage recorder",
BMT 2013, Graz, Austria,
Sep.
2013.
191.
J. Handwerker,
V. Bonehi,
M. Eschelbach,
K. Scheffler,
M. Ortmanns and
J. Anders,
"An active transmit/receive NMR magnetometer for field monitoring in ultra high field MRI scanners",
BMT 2013, Graz, Austria,
Sep.
2013.
190.
J. Anders and
M. Ortmanns,
"Frequency noise of CMOS LC tank oscillators operating in weak inversion",
21st European Conference on Circuit Theory and Design (ECCTD), Dresden, Germany,
Sep.
2013.
189.
B. Schlecker,
G. Fantner,
M. Ortmanns and
J. Anders,
"Novel Electronics for High-speed FM AFM in Life Science Applications",
21st European Conference on Circuit Theory and Design (ECCTD), Dresden, Germany,
Sep.
2013.
188.
A. Elkafrawy,
J. Anders and
M. Ortmanns,
"An Approach to High Speed SAR ADCs",
Kleinheubacher Tagung, Miltenberg, Germany,
Sep.
2013.
187.
M. Lorenz,
T. Brückner,
R. Ritter and
M. Ortmanns,
"Gemeinsame Schätzung von Nichtidealitäten in zeitkontinuierlichen Sigma-Delta Modulatoren",
Kleinheubacher Tagung, Miltenberg, Germany,
Sep.
2013.
186.
C. Zorn,
T. Thiessen,
T. Brückner,
M. Ortmanns and
W. Mathis,
"State Space Analysis of Mixed Signal Systems with Switched Feedback and
Delay",
21th European Conference on Circuit Theory and Design (ECCTD), Dresden, Germany,
Sep.
2013.
185.
B. Schlecker,
M. Ortmanns and
J. Anders,
"Treiberelektronik zur Anwendung in frequenzmodulierter Rasterkaftmikroskopie",
Kleinheubacher Tagung, Miltenberg, Germany,
Sep.
2013.
184.
G. Malhotra,
J. Becker and
M. Ortmanns,
"Novel Field Programmable Embryonic Cell for Adder and Multiplier",
9th Conference on Ph.D. Research in Microelectronics and Electronics (PRIME 2013), Villach, Austria,
Jun.
2013.
183.
U. Bihr,
T. Ungru,
H. Xu,
J. Anders,
J. Becker and
M. Ortmanns,
"A Bidirectional Neural Interface with a HV Stimulator and a LV Neural Amplifier",
IEEE International Symposium on Circuits and Systems (ISCAS), Beijing, China,
May
2013.
182.
H. Xu,
U. Bihr,
J. Becker and
M. Ortmanns,
"A Multi-channel Neural Stimulator with Resonance Compensated Inductive Receiver and Closed-loop Smart Power Management",
IEEE International Symposium on Circuits and Systems (ISCAS), Beijing, China,
May
2013.
181.
J. G. Kauffman,
R. Ritter,
C. Chu and
M. Ortmanns,
"A Native Switched DAC Cell with low ISI for CT Delta Sigma Modulators",
IEEE International Symposium on Circuits and Systems (ISCAS), Beijing, China,
May
2013.
180.
C. Chu,
T. Brückner,
J. G. Kauffman,
J. Anders,
J. Becker and
M. Ortmanns,
"Analysis and Design of High Speed/High Linearity CT Delta Sigma Modulators",
IEEE International Symposium on Circuits and Systems (ISCAS), Beijing, China,
May
2013.
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