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

Artikel

2025

414.
M. Aziz, P. Kässer, S. Ibrahim and M. Ortmanns, "A Comparative Study of Incremental ΔΣ Analog-to-Digital Converter Architectures with Extended Order and Resolution", MDPI Electronics 2025, 14, 372, Jan. 2025.
DOI:

2024

413.
M. Sporer, N. Graber, M. Mayer, S. Reich, T. Stieglitz and M. Ortmanns, "An ultra-miniaturized Neural Recording μASIC for the NeuroBus Implant", IEEE Biomedical Circuits and Systems Conference (BioCAS), Xi'an, China, pp. 1-5, Dez. 2024.
DOI:
412.
J. Conrad, S. Wilhelmstätter, R. Asthana, V. Belagiannis and M. Ortmanns, "Differentiable Cost Model for Neural-Network Accelerator Regarding Memory Hierarchy", IEEE Transactions on Circuits and Systems I: Regular Papers ( Early Access ), Okt. 2024.
DOI:
411.
J. Conrad, J. G. Kauffman, S. Wilhelmstätter, R. Asthana, V. Belagiannis and M. Ortmanns, "Confidence Estimation and Boosting for Dynamic-Comparator Transient-Noise Analysis", 22nd IEEE Interregional NEWCAS Conference (NEWCAS), Sep. 2024.
DOI:
410.
A. Abdelaal, M. Pietzko, J. G. Kauffman, A. Jain and M. Ortmanns, "ΔΣ Modulators Employing MASH DSM DAC-Based Dual Quantization", IEEE Transactions on Circuits and Systems I: Regular Papers ( Volume: 72, Issue: 1, Page(s) 71-84, January 2025), Aug. 2024.
DOI:
409.
A. Abdelaal, M. Pietzko, J. Ungethüm, J. G. Kauffman and M. Ortmanns, "Using Negative-R Assisted Integrators in Wide-band Delta-Sigma Modulators", IEEE International Symposium on Circuits and Systems (ISCAS), Singapore, Jul. 2024.
DOI:
408.
S. Wilhelmstätter, J. Conrad, D. Upadhyaya, I. Polian and M. Ortmanns, "Enabling Power Side-Channel Attack Simulation on Mixed-Signal Neural Network Accelerators", IEEE International Conference on Omni-Layer Intelligent Systems (COINS), London, UK, Jul. 2024.
407.
M. Dalla Longa, F. Conzatti, O. Ismail, J. G. Kauffman and M. Ortmanns, "A 470μW, 102.6dB-DR, 20kHz BW Calibration-Free ΔΣ Modulator with SFDR in Excess of 110dBc using an Intrinsically Linear 13-Level DAC", IEEE Symposium on VLSI Technology and Circuits (VLSI Technology and Circuits), Honolulu, HI, USA, 2024, pp. 1-2, Jun. 2024.
DOI:
406.
D. -. Wiens, B. Driemeyer and M. Ortmanns, "A Mixed-Signal TIA with Input Restoring ADC", IEEE International Symposium on Circuits and Systems (ISCAS), Singapore, Mai 2024.
DOI:
405.
P. Kässer, O. Ismail, D. -. Wiens and M. Ortmanns, "Offset Cancellation in Incremental ∆Σ ADCs", IEEE International Symposium on Circuits and Systems (ISCAS), Singapore, Mai 2024.
DOI:
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:
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:
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:
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:
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:
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:
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. .
Weblink:
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:
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:

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:
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:
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:
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:
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:

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2026

11.
Ortmanns, M.; Kässer, P.; Wagner, J.
Incremental Delta-Sigma ADCs
Herausgeber: Springer Cham
März 2026
DOI:
ISBN:978-3-032-09467-4

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:

2023

9.
Chan, C.-H.; Zhu, Y.; Qi, L.; Sin, S.-W.; Ortmanns, M.; Martins, R. P.
High-Performance Oversampling ADCs
Herausgeber: Springer, Cham
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:
ISBN:978-3-031-22230-6

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
    , 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