Publikationen - Prof. Dr.-Ing. M. Ortmanns

Artikel

2022

372.
Dalla Longa, M.; Conzatti, F.; Hofmann, T.; Kauffman, J. G.; Ortmanns, M.
An Intrinsically Linear 13-Level Capacitive DAC for Delta Sigma Modulators
IEEE Transactions on Circuits and Systems II: Express Briefs ( Early Access )
November 2022
DOI:doi.org/10.1109/TCSII.2022.3224878
371.
Mokhtar, M. A.; Abdelaal, A.; Sporer, M.; Becker, J.; Kauffman, J. G.; Ortmanns, M.
A 0.9-V DAC-Calibration-Free Continuous-Time Incremental Delta-Sigma Modulator Achieving 97-dB SFDR at 2 MS/s in 28-nm CMOS
IEEE Journal of Solid-State Circuits, Volume: 57, Issue: 11
November 2022
DOI:10.1109/JSSC.2022.3160325
370.
Zhang, J.; Sin, S.-W.; Liu, Y.; Ye, F.; Wang, G.; Ortmanns, M.; Qi, L.
On the Synthesis of Continuous-Time Sturdy MASH Delta-Sigma Modulators
IEEE Transactions on Circuits and Systems II: Express Briefs
Oktober 2022
DOI:10.1109/TCSII.2022.3212059
369.
Reich, S.; Ammann, P.; Sporer, M.; Ortmanns, M.
An Onchip Electrode Impedance Estimation achieving 1.2 dB 3σ-Accuracy with Minimum Hardware Overhead
IEEE Biomedical Circuits and Systems Conference (BioCAS), Taipeh, Taiwan
Oktober 2022
368.
Reich, S.; Sporer, M.; Becker, J.; Rieger, S. B.; Schüttler, M.; Ortmanns, M.
A 32-ch Neuromodulator with redundant Voltage Monitors avoiding Blocking Capacitors
IEEE ESSDERC/ESSCIRC 2022, Milan, Italy
September 2022
367.
Häberle, M.; Djekic, D.; Krüger, D.; Rajabzadeh, M.; Ortmanns, M.; Anders, J.
An Integrator-Differentiator Transimpedance Amplifier Using Tunable Linearized High-Value Multi-Element Pseudo-Resistors
IEEE Transactions on Circuits and Systems--I: Regular Papers
August 2022
DOI:10.1109/TCSI.2022.3174174
366.
Reich, S.; Kunze, G.; Sporer, M.; Ortmanns, M.
Analysis of Chopper Ripple Reduction by Delayed Sampling
SMACD / PRIME 2022; International Conference on SMACD and 17th International Conference on PRIME, pp. 1-4
Juni 2022
365.
Reich, S.; Fritschi, D.; Sporer, M.; Ortmanns, M.
Artifact-Recovery in Neuromodulators using Tunable High-Pass Corners
20th IEEE International NEWCAS Conference, Québec, Canada
Juni 2022
364.
Wagner, J.; Mokhtar, M. A.; Ortmanns, M.
Automated Design of Sigma-Delta Modulators with FIR Feedback
IEEE International Symposium on Circuits and Systems (ISCAS), Austin, USA
Juni 2022
363.
Sporer, M.; Reich, S.; Kauffman, J. G.; Ortmanns, M.
A Direct Digitizing Chopped Neural Recorder Using a Body-Induced Offset Based DC Servo Loop
IEEE Transactions on Biomedical Circuits and Systems
Juni 2022
DOI:10.1109/TBCAS.2022.3177241
362.
Pietzko, M.; Ungethüm, J.; Kauffman, J. G.; Li, Q.; Ortmanns, M.
Bitwise ELD Compensation in ∆Σ Modulators
IEEE International Symposium on Circuits and Systems (ISCAS), Austin, USA
Mai 2022
DOI:10.1109/ISCAS48785.2022.9937305
361.
Reich, S.; Fritschi, D.; Sporer, M.; Ortmanns, M.
An Experimental Reliability Study of Pseudo-Resistors in Biomedical Applications
IEEE International Symposium on Circuits and Systems (ISCAS), Austin, TX, USA
Mai 2022
360.
Qi, L.; Liu, Y.; Sin, S.-W.; Xing, X.; Wang, G.; Ortmanns, M.; Martins, R. P.
Wideband Continuous-time MASH Delta-Sigma Modulators: A Tutorial Review
IEEE Transactions on Circuits and Systems II: Express Briefs
März 2022
DOI:10.1109/TCSII.2022.3163766

2021

359.
Mokhtar, M. A.; Merkle, M.; Kauffman, J. G.; Ortmanns, M.
A Comparative Study of Noise Behavior in Single-Opamp Resonators in Delta-Sigma Modulators
28th IEEE International Conference on Electronics, Circuits, and Systems (ICECS), Dubai, UAE
November 2021
358.
Ungethüm, J.; Kauffman, J. G.; Ortmanns, M.
Digital Resolution Requirements in 0-X Mash Delta-Sigma-Modulators
2021 IEEE International Conference on Electronics Circuits and Systems (ICECS)
November 2021
357.
Ortmanns, M.
Wideband and Low-Power Delta-Sigma ADCs: State of the Art, Trends and Implementation Examples
IEEE 47th European Solid State Circuits Conference (ESSCIRC)
September 2021
DOI:10.1109/ESSCIRC53450.2021.9567861
356.
Lanniel, A.; Boeser, T.; Alpert, T.; Ortmanns, M.
Low-Noise Readout Circuit for an Automotive MEMS Accelerometer
IEEE Open Journal of the Solid-State Circuits Society, vol. 1, pp. 140-148
September 2021
DOI:10.1109/OJSSCS.2021.3116125
355.
Wagner, J.; Miki, T.; Ortmanns, M.
Compensation of Finite GBW in CT Baddpass SDMs Based on Single-OpAmp Resonators with Positive-Feedback
IEEE 64th International Midwest Symposium on Circuits and Systems (MWSCAS)
August 2021
354.
Ungethüm, J.; Kauffman, J. G.; Ortmanns, M.
Minimizing Signal-Dependent Residue in CT Pipelined ADCs
2021 IEEE International Midwest Symposium on Circuits and Systems (MWSCAS)
August 2021
353.
Reich, S.; Sporer, M.; Haas, M.; Becker, J.; Schüttler, M.; Ortmanns, M.
A High-Voltage Compliance, 32-Channel Digitally Interfaced Neuromodulation System on Chip
IEEE Journal of Solid-State Circuits, vol. 56, issue 8, pp. 2476-2487
August 2021
DOI:10.1109/JSSC.2021.3076510
352.
Sporer, M.; Graber, N.; Moll, S.; Reich, S.; Ortmanns, M.
Implementation of a Low Power Decimation Filter in a 180 nm HV-CMOS Technology for a Neural Recording Front-End
SMACD / PRIME 2021; International Conference on SMACD and 16th Conference on PRIME, pp. 1-4.
Juli 2021
351.
Müelich, S.; Mandry, H.; Ortmanns, M.; Fischer, R.
A Multilevel Coding Scheme for Multi-Valued Physical Unclonable Functions
IEEE Transactions on Information Forensics and Security
Juni 2021
DOI:10.1109/TIFS.2021.3089883
350.
Reich, S.; Sporer, M.; Ortmanns, M.
A Chopped Neural Front-end featuring Input Impedance Boosting with suppressed offset-induced charge transfer
IEEE Transactions on Biomedical Circuits and Systems
Mai 2021
DOI:10.1109/TBCAS.2021.3080398
349.
Mandry, H.; Müelich, S.; Becker, J.; Fischer, R.; Ortmanns, M.
Using Polynomial Interpolation for Reproducing Multi-Valued Responses of Physical Unclonable Functions on FPGAs
IEEE International Symposium on Circuits and Systems (ISCAS)
Mai 2021
DOI:10.1109/ISCAS51556.2021.9401501
348.
Pietzko, M.; Wagner, J.; Abdelaal, A.; Kauffman, J. G.; Ortmanns, M.
Influence of Excess Loop Delay on the STF of Continuous-Time Delta-Sigma Modulators
IEEE International Symposium on Circuits and Systems (ISCAS), Daegu, Korea (Online)
Mai 2021

Bücher

2021

8.
Haas, M.; Ortmanns, M.
Neural Stimulation Circuits
Herausgeber: River Publishers
Selected Topics in Biomedical Circuits and Systems, Eds Minkyu Je and Myung Hoon Sunwoo Edition
Februar 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
Herausgeber: Springer
2019
ISBN:978-3030252663

2016

6.
Ortmanns, M.; Ritter, R.; Chi, J.
ΣΔ ADCs with Improved Interferer Robustness
Band Wideband Continuous-time SD-ADCs, Automotive Electronics, and Power Management: Advances in Analog Circuit Design 2016
Herausgeber: 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
Herausgeber: Springer
2014

2007

4.
Ortmanns, M.; Buhmann, A.; Manoli, Y.
Interface Circuits in Comprehensive Microsystems
Herausgeber: 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
Herausgeber: 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
Herausgeber: Springer Pubs.
2005

2003

1.
Ortmanns, M.
Error Compensation in Continuous-Time Sigma-Delta A/D Converters
Herausgeber: PhD Thesis, Albert-Ludwigs-University Freiburg
2003

Patente

  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