Institute of Microelectronics

Publications - Prof. Dr.-Ing. M. Ortmanns

Papers  Books  Patents 

Papers

2015

229.
R. Ritter, M. Lorenz and M. Ortmanns, "Anti-Aliasing Filter Improvement in Continuous-Time Feedback Sigma-Delta Modulators", IEEE International Symposium on Circuits and Systems (ISCAS), Lisbon, Portugal, May 2015.
228.
M. Lorenz, R. Ritter, J. Anders and M. Ortmanns, "Estimation of Non-Idealities in Sigma-Delta Modulators for Test and Correction Using Unscented Kalman Filters", Circuits and Systems I: Regular Papers, IEEE Transactions on, Mar. 2015.
227.
B. Schlecker, A. Eichel, M. Ortmanns, G. Fantner and J. Anders, "Modeling and Design of high-speed FM-AFM driver electronics using Cadence Virtuoso® and Simulink®", 8th Vienna International Conferenceon Mathematical Modelling — MATHMOD, Feb. 2015.

2014

226.
A. Elkafrawy, A. Al Marashli, R. Ritter, J. Anders and M. Ortmanns, "Design of a High Linearity Gm Stage for a High Speed Current Mode SAR ADC", 21st IEEE International Conference on Electronics, Circuits and Systems (ICECS), Marseille, France, Dec. 2014.
225.
A. Al Marashli, J. Anders and M. Ortmanns, "Employing Incremental Sigma Delta DACs for High Resolution SAR ADC", 21st IEEE International Conference on Electronics, Circuits and Systems (ICECS), Marseille, France, Dec. 2014.
224.
M. Völker, S. Pashmineh, J. Hauer and M. Ortmanns, "Current Feedback Linearization Applied to Oscillator Based ADCs", IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 61, no. 11, pp. 3066-3074, Nov. 2014.
223.
H. Xu, J. Handwerker and M. Ortmanns, "Telemetry for Implantable Medical Devices: Part 2 – Power Telemetry", IEEE Solid State Circuits Society Magazine, Vol. 6, No. 3, pp. 60 – 63, Nov. 2014.
222.
U. Bihr, M. Haas, J. Anders and M. Ortmanns, "Comparison of Different Compression Schemes for Neural Spike Signals", BMT 2014, Hannover, Germany, Oct. 2014.
221.
J. Handwerker, A. Hoffmann, M. Eschelbach, K. Scheffler, M. Ortmanns and J. Anders, "A distributed active NMR sensor array for artifact correction in ultra high field MRI applications", 48th annual conference of the German Society for Biomedical Engineering, Hannover, Germany, Oct. 2014.
220.
T. Liu, J. Anders and M. Ortmanns, "Design of an Optical Transcutaneous Forward Data Telemetry for Brain Machine Interface", 48th annual conference of the German Society for Biomedical Engineering, Hannover, Germany, Oct. 2014.
219.
T. Liu, U. Bihr, J. Becker, J. Anders and M. Ortmanns, "In Vivo Verification of a 100 Mbps Transcutaneous Optical Telemetric Link", IEEE/CAS-EMB Biomedical Circuits and Systems Conference 2014, Lausanne, Switzerland, Oct. 2014.
218.
U. Bihr, J. Anders, J. Rickert, M. Schüttler, A. Moeller, K. H. Boven, J. Becker and M. Ortmanns, "A Neural Recorder IC with HV Input Multiplexer for Voltage and Current Stimulation with 18V Compliance", IEEE ESSCIRC 2014, Venedig, Italien, Sep. 2014.
217.
A. Elkafrawy, J. Anders and M. Ortmanns, "Design of a High Resolution Transimpedance Amplifier for a High Speed Current Mode SAR ADC", Kleinheubacher Tagung, Miltenberg, Germany, Sep. 2014.
216.
A. Hoffmann, J. Handwerker, M. Ortmanns and J. Anders, "Ein Array von NMR Feldsensoren zur Korrektur gradienteninduzierter Artefakte bei der Hochfeld MR-Bildgebung", Kleinheubacher Tagung, Miltenberg, Germany, Sep. 2014.
215.
A. Al Marashli, J. Anders and M. Ortmanns, "Ein SAR A/D Umsetzer mit neuartigem Rückkopplungs-D/A Umsetzer für hohe Auflösungen", Kleinheubacher Tagung, Miltenberg, Germany, Sep. 2014.
214.
A. Elkafrawy, J. Anders and M. Ortmanns, "A High Resolution Transimpedance Amplifier for Use in a 10-bit 200 MS/s Current Mode SAR ADC", 57th IEEE International Midwest Symposium on Circuits and Systems (MWSCAS), College Station, Texas, USA, Aug. 2014.
213.
T. Liu, Z. Cai, J. Anders and M. Ortmanns, "A Bootstrap Transimpedance Amplifier for High Speed Optical Transcutaneous Wireless Links", 10th Conference on Ph.D. Research in Microelectronices and Electronices, Grenoble, France, Jul. 2014.
212.
R. Ritter, M. Lorenz, C. Chu and M. Ortmanns, "A High Open Loop Gain Common Mode Feedback Technique for Fully Differential Amplifiers", IEEE NEWCAS 2014, Trois-Rivières, Kanada, Jun. 2014.
211.
M. Lorenz, M. Maurer, Y. Manoli and M. Ortmanns, "A Spherical Simplex Unscented Kalman Filter with Smart Sigma-Point Processing for Estimations in CT Sigma-Delta Modulators", IEEE NEWCAS 2014, Trois-Rivières, Kanada, Jun. 2014.
210.
U. Bihr, H. Xu, C. Bulach, M. Lorenz, J. Anders and M. Ortmanns, "Real-Time Data Compression of Neural Spikes", IEEE NEWCAS 2014, Trois-Rivières, Kanada, Jun. 2014.
209.
C. Chu, J. G. Kauffman, J. Anders, J. Becker, M. Ortmanns, M. Epp and S. Chartier, "A 1.92-GS/s CT ΔΣ modulator with 70-db DR and 78-db SFDR in 15-MHz bandwidth", IEEE NEWCAS 2014, Trois-Rivières, Kanada, Jun. 2014.
208.
M. Lorenz, R. Ritter, J. Becker and M. Ortmanns, "A Genetic Algorithm for the Estimation of Nonidealities in Continuous-Time Sigma-Delta Modulators", Transactions on Circuits and Systems II, Vol. 61, no.6, pp. 388-392, Jun. 2014.
207.
M. Lorenz, T. Brückner, R. Ritter, J. Anders and M. Ortmanns, "A Square Root Unscented Kalman Filter for Estimating DAC and Loopfilter Nonidealities in Continuous-Time Sigma-Delta Modulators", IEEE International Symposium on Circuits and Systems (ISCAS), Melbourne, Australia, Jun. 2014.
206.
T. Liu, U. Bihr, J. Anders and M. Ortmanns, "Performance Evaluation of a Low Power Optical Wireless Link for Biomedical Data Transfer", IEEE International Symposium on Circuits and Systems (ISCAS), Melbourne, Australia, Jun. 2014.
205.
R. Ritter, J. Handwerker and M. Ortmanns, "Telemetry for Implantable Medical Devices: Part 1 - Media Properties and Standards", IEEE Solid State Circuits Society Magazine, Vol. 6, No. 2, pp. 47 – 51, Jun. 2014.

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
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
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
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
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
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

2007

4.
Ortmanns, M.; Buhmann, A.; Manoli, Y.
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

2005

2.
Ortmanns, M.; Gerfers, F.
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

Patents

  1. A. Herkle, J. Becker, M. Ortmanns
    [DE] Verfahren und Vorrichtung zur Erzeugung einer digitalen Signatur
    DE102016204055A1, Patent record available from the German Patent
    2016

  2. 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

  3. 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

  4. 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

  5. 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

  6. 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

  7. 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

  8. 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

  9. 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