Institut für Mikroelektronik

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

Artikel  Bücher  Patente

Artikel

2024

404.
P. Kässer, S. Kaltenstadler, J. Conrad, J. Wagner, O. Ismail and M. Ortmanns, "Stability Prediction of Δ∑ Modulators using Artificial Neural Networks", IEEE International Symposium on Circuits and Systems (ISCAS), Singapore, Mai 2024.
DOI:10.1109/ISCAS58744.2024.10557868
403.
M. Pietzko, J. Ungethüm, A. Abdelaal, J. G. Kauffman and M. Ortmanns, "A 600MS/s 10-bit SAR ADC with unit via-based delta-length C-DAC in 22nm FDSOI", IEEE International Symposium on Circuits and Systems (ISCAS), Singapore, Mai 2024.
DOI:10.1109/ISCAS58744.2024.10558087
402.
B. Driemeyer, H. Mandry, D. -. Wiens, J. Becker and M. Ortmanns, "Optimisation of RO-PUF Design Parameters for Minimising the Effective Area per PUF Bit", IEEE International Symposium on Circuits and Systems (ISCAS), Singapore, Mai 2024.
DOI:10.1109/ISCAS58744.2024.10558478
401.
J. Conrad, S. Wilhelmstätter, R. Asthana, V. Belagiannis and M. Ortmanns, "Too-Hot-to-Handle: Insights into Temperature and Noise Hyperparameters for Differentiable Neural-Architecture-Searches", 6th IEEE International Conference on Artificial Intelligence Circuits and Systems (AICAS), Abu-Dhabi, UAE, Apr. 2024.
DOI:10.1109/AICAS59952.2024.10595971
400.
P. Kässer, J. Wagner, O. Ismail and M. Ortmanns, "Inner Transfer Functions in Incremental ΔΣ ADCs", IEEE Transactions on Circuits and Systems II: Express Briefs, Apr. 2024.
DOI:10.1109/TCSII.2024.3390397
399.
S. Wilhelmstätter, J. Conrad, D. Upadhyaya, I. Polian and M. Ortmanns, "Attacking a Joint Protection Scheme for Deep Neural Network Hardware Accelerators and Models", 6th IEEE International Conference on Artificial Intelligence Circuits and Systems (AICAS), Abu Dhabi, UAE, Apr. 2024.
DOI:10.1109/AICAS59952.2024.10595935
398.
O. Ismail, P. Kässer, J. G. Kauffman and M. Ortmanns, "Non-Ideal Reset in Incremental Delta-Sigma ADCs", IEEE 22nd Interregional NEWCAS Conference Sherbrooke, Quebec, Canada, Apr. 2024.
397.
R. Asthana, J. Conrad, Y. Dawoud, M. Ortmanns and V. Belagiannis, "Multi-conditioned Graph Diffusion for Neural Architecture Search", Transactions on Machine Learning Research, Mä. 2024. https://openreview.net/forum?id=5VotySkajV.
Weblink:https://openreview.net/forum?id=5VotySkajV
396.
M. Sporer, I. -. Vasilaș, A. Adžemović, N. Graber, S. Reich, C. Gueli, M. Eickenscheidt, I. Diester, T. Stieglitz and M. Ortmanns, "NeuroBus - Architecture for an Ultra-Flexible Neural Interface", IEEE Transactions on Biomedical Circuits and Systems ( Early Access ), Pages: 1 - 16, Jan. 2024.
DOI:10.1109/TBCAS.2024.3354785
395.
O. Ismail, P. Kässer, J. G. Kauffman and M. Ortmanns, "DAC Element Mismatch Shaping Algorithms in Incremental Delta-Sigma ADCs", IEEE International Symposium on Circuits and Systems (ISCAS), Singapore, Jan. 2024.
DOI:10.1109/ISCAS58744.2024.10558337

2023

394.
P. Kässer, J. Wagner, O. Ismail, B. Driemeyer and M. Ortmanns, "Quantizer Gain in Incremental Delta-Sigma ADCs", 30th IEEE International Conference on Electronics, Circuits and Systems (ICECS), Istanbul, Turkiye, pp. 1-4, Dez. 2023.
DOI:10.1109/ICECS58634.2023.10382904
393.
B. Driemeyer, P. Kässer, H. Mandry, D. -. Wiens and M. Ortmanns, "A Feasibility Study on a Switched-Capacitor Based PUF in 28 nm Technology", 30th IEEE International Conference on Electronics, Circuits and Systems (ICECS), Istanbul, Turkiye, Dez. 2023.
DOI:10.1109/ICECS58634.2023.10382899
392.
B. Driemeyer, P. Kässer and M. Ortmanns, "Optimum Position of Digital DAC Error Correction relative to the Decimation Filter in ΔΣ ADCs", 30th IEEE International Conference on Electronics, Circuits and Systems (ICECS), Istanbul, Turkiye, Dez. 2023.
DOI:10.1109/ICECS58634.2023.10382885
391.
D. -. Wiens, M. Sporer, B. Driemeyer and M. Ortmanns, "A Mixed-Signal Integrator-Differentiator-TIA", IEEE Transactions on Circuits and Systems--II: Express Briefs, Sep. 2023.
DOI:10.1109/TCSII.2023.3318725
390.
P. Kässer, O. Ismail, J. Wagner, R. Fischer and M. Ortmanns, "Frequency-Domain Analysis of Reconfigured Incremental ΔΣ ADCs on the Example of the Exponential Phase", IEEE Transactions on Circuits and Systems I: Regular Papers, Sep. 2023.
DOI:10.1109/TCSI.2023.3310655
389.
M. A. Mokhtar, O. Ismail, P. Vogelmann, J. G. Kauffman and M. Ortmanns, "A 40 kS/sCalibration-Free Incremental △Σ ADC Achieving 104 dB DR and 105.7 dB SFDR", ESSCIRC 2023- IEEE 49th European Solid State Circuits Conference (ESSCIRC), Lisbon, Portugal, pp. 401-404, Sep. 2023.
DOI:10.1109/ESSCIRC59616.2023.10268735
388.
J. Ungethüm, M. Pietzko, A. Abdelaal, J. G. Kauffman and M. Ortmanns, "A Chopped 6-bit 1.6 GS/s SAR ADC Utilizing Slow Decision Information in 22 nm FDSOI", ESSCIRC 2023- IEEE 49th European Solid State Circuits Conference (ESSCIRC), Sep. 2023.
DOI:10.1109/ESSCIRC59616.2023.10268704
387.
M. Jang, X. Tang, Y. Lim, J. G. Kauffman, L. Sun, M. Ortmanns and Y. Chae, "Design Techniques for Energy Efficient Analog-to-Digital Converters", IEEE Open Journal of the Solid-State Circuits Society, Sep. 2023.
DOI:10.1109/OJSSCS.2023.3311418
386.
Y. Chae, C. M. Lopez, K. A. A. Makinwa, M. Ortmanns and W. Sansen, "A Glimpse of the History of Analog ICs: A Tale of Amplifiers, Data Converters, and Sensor Interfaces", IEEE Solid-State Circuits Magazine, Aug. 2023.
DOI:10.1109/MSSC.2023.3282557
385.
S. Reich, M. Sporer and M. Ortmanns, "A Flexible Power Management System-On-Chip for Implantable Brain-Machine-Interfaces", 21st IEEE Interregional NEWCAS Conference (NEWCAS), Edinburgh, Scotland, Jun. 2023.
DOI:10.1109/NEWCAS57931.2023.10198129
384.
S. Reich, M. Sporer and M. Ortmanns, "A Time-Domain Charge-Balancing Method for Neuromodulators", 21st IEEE Interregional NEWCAS Conference (NEWCAS), Edinburgh, Scotland, Jun. 2023.
DOI:10.1109/NEWCAS57931.2023.10198109
383.
M. Pietzko, J. Spiess, J. Ungethüm, J. G. Kauffman, Q. Li and M. Ortmanns, "Bitwise ELD Compensation under Integrator Nonidealities in ΔΣ Modulators", 21st IEEE Interregional NEWCAS Conference (NEWCAS), Edinburgh, United Kingdom, Jun. 2023.
DOI:10.1109/NEWCAS57931.2023.10198050
382.
M. Sporer, N. Graber, S. Reich, C. Gueli, J. Becker, T. Stieglitz and M. Ortmanns, "NeuroBus – Architecture and Communication Bus for an Ultra-Flexible Neural Interface", IEEE International Symposium on Circuits and Systems (ISCAS), Monterey, CA, USA, Mai 2023.
DOI:10.1109/ISCAS46773.2023.10181816
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

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