Institut für Mikroelektronik

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

Artikel  Bücher  Patente

Artikel

2023

381.
M. Pietzko, J. Ungethüm, J. G. Kauffman and M. Ortmanns, "Delay Error Shaping in ΔΣ Modulators Using Time-Interleaved High Resolution Quantizers", IEEE Transactions on Circuits and Systems I: Regular Papers, Mai 2023.
DOI:10.1109/TCSI.2023.3269573
380.
P. Kässer, O. Ismail, C. Rudorf, J. Wagner and M. Ortmanns, "Linear-Exponential I-DS ADCs: Analysis, Limitations and Higher Order", IEEE International Symposium on Circuits and Systems (ISCAS), Monterey, CA, USA, pp. 1-5, Mai 2023.
DOI:10.1109/ISCAS46773.2023.10182215
379.
M. Dalla Longa, F. Conzatti, J. L. Ceballos and M. Ortmanns, "On the Intrinsic Linearity Limitations of Single-Bit Delta Sigma Modulators", IEEE International Symposium on Circuits and Systems (ISCAS), Mai 2023.
DOI:10.1109/ISCAS46773.2023.10181538
378.
B. Lippmann, J. Hatsch, S. Seidl, D. Houdeau, N. P. Subrahmanyam, D. Schneider, M. Safieh, A. Passarelli, A. Maftun, M. Brunner, T. Music, M. Pehl, T. Siddiqui, R. Brederlow, U. Schlichtmann, B. Driemeyer, M. Ortmanns, R. Hesselbarth and M. Hiller, "VE-FIDES: Designing Trustworthy Supply Chains Using Innovative Fingerprinting Implementations", Design, Automation & Test in Europe Conference & Exhibition (DATE), Apr. 2023.
DOI:10.23919/DATE56975.2023.10137026
377.
M. Dalla Longa, F. Conzatti, T. Hofmann, J. G. Kauffman and M. Ortmanns, "An Intrinsically Linear 13-Level Capacitive DAC for Delta Sigma Modulators", IEEE Transactions on Circuits and Systems II: Express Briefs, Apr. 2023.
DOI:doi.org/10.1109/TCSII.2022.3224878
376.
S. Reich, D. Fritschi, M. Sporer and M. Ortmanns, "In Vitro Study of Artifact-Recovery Using a 32-Channel Neuromodulator Platform", IEEE Transactions on Circuits and Systems I: Regular Papers (Early Access), Mä. 2023.
DOI:10.1109/TCSI.2023.3255549

2022

375.
M. A. Mokhtar, A. Abdelaal, M. Sporer, J. Becker, J. G. Kauffman and M. Ortmanns, "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, Nov. 2022.
DOI:10.1109/JSSC.2022.3160325
374.
M. Sporer, S. Reich, H. Mandry, J. Becker and M. Ortmanns, "A Wireless Headstage Prototype Based on a Neurorecorder IC", IEEE Biomedical Circuits and Systems Conference (BioCAS), Taipei, Taiwan, Okt. 2022.
DOI:10.1109/BioCAS54905.2022.9948554
373.
J. Zhang, S. -. Sin, Y. Liu, F. Ye, G. Wang, M. Ortmanns and L. Qi, "On the Synthesis of Continuous-Time Sturdy MASH Delta-Sigma Modulators", IEEE Transactions on Circuits and Systems II: Express Briefs, Okt. 2022.
DOI:10.1109/TCSII.2022.3212059
372.
S. Reich, P. Ammann, M. Sporer and M. Ortmanns, "An Onchip Electrode Impedance Estimation achieving 1.2 dB 3σ-Accuracy with Minimum Hardware Overhead", IEEE Biomedical Circuits and Systems Conference (BioCAS), Taipeh, Taiwan, Okt. 2022.
DOI:10.1109/BioCAS54905.2022.9948672
371.
B. Driemeyer, H. Mandry, D. -. Wiens, J. Becker and M. Ortmanns, "PUF-Entropy Extraction of DAC Intersymbol-Interference using Continuous-Time Delta-Sigma ADCs", IEEE International Conference on Electronics, Circuits and Systems (ICECS), Okt. 2022.
DOI:10.1109/ICECS202256217.2022.9971072
370.
S. Reich, M. Sporer, J. Becker, S. B. Rieger, M. Schüttler and M. Ortmanns, "A 32-ch Neuromodulator with redundant Voltage Monitors avoiding Blocking Capacitors", IEEE ESSDERC/ESSCIRC 2022, Milan, Italy, Sep. 2022.
369.
M. Häberle, D. Djekic, D. Krüger, M. Rajabzadeh, M. Ortmanns and J. Anders, "An Integrator-Differentiator Transimpedance Amplifier Using Tunable Linearized High-Value Multi-Element Pseudo-Resistors", IEEE Transactions on Circuits and Systems--I: Regular Papers, Aug. 2022.
DOI:10.1109/TCSI.2022.3174174
368.
M. Sporer, S. Reich, J. G. Kauffman and M. Ortmanns, "A Direct Digitizing Chopped Neural Recorder Using a Body-Induced Offset Based DC Servo Loop", IEEE Transactions on Biomedical Circuits and Systems, Jun. 2022.
DOI:10.1109/TBCAS.2022.3177241
367.
S. Reich, G. Kunze, M. Sporer and M. Ortmanns, "Analysis of Chopper Ripple Reduction by Delayed Sampling", SMACD / PRIME 2022; International Conference on SMACD and 17th International Conference on PRIME, pp. 1-4, Jun. 2022.
366.
S. Reich, D. Fritschi, M. Sporer and M. Ortmanns, "Artifact-Recovery in Neuromodulators using Tunable High-Pass Corners", 20th IEEE International NEWCAS Conference, Québec, Canada, Jun. 2022.
365.
J. Wagner, M. A. Mokhtar and M. Ortmanns, "Automated Design of Sigma-Delta Modulators with FIR Feedback", IEEE International Symposium on Circuits and Systems (ISCAS), Austin, USA, Jun. 2022.
364.
S. Reich, D. Fritschi, M. Sporer and M. Ortmanns, "An Experimental Reliability Study of Pseudo-Resistors in Biomedical Applications", IEEE International Symposium on Circuits and Systems (ISCAS), Austin, TX, USA, Mai 2022.
363.
M. Pietzko, J. Ungethüm, J. G. Kauffman, Q. Li and M. Ortmanns, "Bitwise ELD Compensation in ∆Σ Modulators", IEEE International Symposium on Circuits and Systems (ISCAS), Austin, USA, Mai 2022.
DOI:10.1109/ISCAS48785.2022.9937305
362.
B. Driemeyer, J. Spiess, J. G. Kauffman and M. Ortmanns, "Complexity Reduced LUT-Based DAC Correction in Continuous-Time Delta-Sigma Modulators", IEEE International Symposium on Circuits and Systems (ISCAS), Mai 2022.
DOI:10.1109/ISCAS48785.2022.9937300
361.
J. Ungethüm, M. Pietzko, J. G. Kauffman, Q. Li and M. Ortmanns, "Maximizing the Inter-Stage Gain in CT 0-X MASH Delta-Sigma-Modulators", IEEE International Symposium on Circuits and Systems (ISCAS), Austin, TX, USA, Mai 2022.
DOI:10.1109/ISCAS48785.2022.9937739
360.
L. Qi, Y. Liu, S. -. Sin, X. Xing, G. Wang, M. Ortmanns and R. P. Martins, "Wideband Continuous-time MASH Delta-Sigma Modulators: A Tutorial Review", IEEE Transactions on Circuits and Systems II: Express Briefs, Mä. 2022.
DOI:10.1109/TCSII.2022.3163766

2021

359.
M. A. Mokhtar, M. Merkle, J. G. Kauffman and M. Ortmanns, "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, Nov. 2021.
358.
J. Ungethüm, J. G. Kauffman and M. Ortmanns, "Digital Resolution Requirements in 0-X Mash Delta-Sigma-Modulators", 2021 IEEE International Conference on Electronics Circuits and Systems (ICECS), Nov. 2021.
357.
A. Lanniel, T. Boeser, T. Alpert and M. Ortmanns, "Low-Noise Readout Circuit for an Automotive MEMS Accelerometer", IEEE Open Journal of the Solid-State Circuits Society, vol. 1, pp. 140-148, Sep. 2021.
DOI:10.1109/OJSSCS.2021.3116125

Bücher

2025

10.
Buhmann, A.; Lanniel, A.; Hiller, T.; Sporer, M.; Reich, S.; Ortmanns, M.
Interface Circuits
Herausgeber: 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
Januar 2023
DOI:doi.org/10.1007/978-3-031-22231-3_5

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