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

Papers

2020

336.
Wagner, J.; Vogelmann, P.; Ortmanns, M.
An Automated Design Environment for CT Incremental Sigma-Delta ADCs
27th IEEE International Conference on Electronics, Circuits and Systems (ICECS)
November 2020
335.
Vogelmann, P.; Wagner, J.; Ortmanns, M.
A 14b, Twofold Time-Interleaved Incremental ΔΣ ADC Using Hardware Sharing
IEEE Transactions on Circuits and Systems I: Regular Papers
July 2020
DOI:10.1109/TCSI.2020.3011362
334.
Rajabzadeh, M.; Häberle, M.; Becker, J.; Ortmanns, M.
Comparison Study of DAC Realizations in Current Input CTΣΔ Modulators
IEEE Transactions on Circuits and Systems II: Express Briefs
July 2020
DOI:10.1109/TCSII.2020.3007964
333.
Herkle, A.; Mandry, H.; Becker, J.; Ortmanns, M.
Live Demonstration: Generating FPGA Fingerprints utilizing Full-Chip Characterization with Ring-Oscillator PUFs
IEEE International Symposium on Circuits and Systems (ISCAS), Seville, Spain
May 2020
332.
Reich, S.; Sporer, M.; Ortmanns, M.
A self-compensated, low-offset Voltage Buffer for Input Impedance Boosting in Chopped Neural Front-ends
IEEE International Symposium on Circuits and Systems (ISCAS), Seville, Spain
May 2020
331.
Becker, J.; Rossak, P.; Herkle, A.; Mandry, H.; Ortmanns, M.
Comparison of measurement and readout strategies for RO-PUFs on Xilinx Zynq-7000 SoC FPGAs
IEEE International Symposium on Circuits and Systems (ISCAS), Seville, Spain
May 2020
330.
Herkle, A.; Mandry, H.; Becker, J.; Reich, S.; Sporer, M.; Ortmanns, M.
Extracting Weak PUFs from Differential Nonlinearity of Digital-to-Analog Converters
IEEE International Symposium on Circuits and Systems (ISCAS), Seville, Spain
May 2020
329.
Conrad, J.; Vogelmann, P.; Mokhtar, M.; Ortmanns, M.
Design Approach for Ring Amplifiers
IEEE Transactions on Circuits and Systems I: Regular Papers
April 2020
DOI:10.1109/TCSI.2020.2986553
328.
Wagner, J.; Vogelmann, P.; Ortmanns, M.
Performance Evaluation of Incremental Sigma-Delta ADCs Based on their NTF
IEEE Transactions on Circuits and Systems—II: Express Briefs (Early Access)
March 2020
327.
Mandry, H.; Herkle, A.; Müelich, S.; Becker, J.; Fischer, R.; Ortmanns, M.
Normalization and Multi-Valued Symbol Extraction from RO-PUFs for Enhanced Uniform Probability Distributions
IEEE Transactions on Circuits and Systems--II: Express Briefs
March 2020
DOI:10.1109/TCSII.2020.2980748
326.
Qi, L.; Jain, A.; Jiang, D.; Sin, S.; Martins, R. P.; Ortmanns, M.
A 76.6-dB-SNDR 50-MHz-BW 29.2-mW Multi-Bit CT Sturdy MASH With DAC Non-Linearity Tolerance
IEEE Journal of Solid-State Circuits
February 2020
DOI:10.1109/JSSC.2019.2942359

2019

325.
Wagner, J.; Vogelmann, P.; Ortmanns, M.
On the Signal Filtering Property of CT Incremental Sigma-Delta ADCs
IEEE Transactions on Circuits and Systems—II: Express Briefs
November 2019
324.
Rajabzadeh, M.; Ungethüm, J.; Herkle, A.; Schilpp, C.; Fauler, M.; Wittekindt, O.; Ortmanns, M.
A 24-Ch. Multi-Electrode Array Allowing Fast EIS to Determine Transepithelial Electrical Resistance
2019 IEEE Biomedical Circuits and Systems Conference (BioCAS), Nara, Japan
October 2019
323.
Mokhtar, M.; Vogelmann, P.; Haas, M.; Ortmanns, M.
A 94.3 dB SFDR, 91.5 dB DR, 200 kS/s CT Incremental Delta-Sigma Modulator with Differentially Reset FIR Feedback
IEEE Solid-State Circuits Letter, September 2019 - Presented on IEEE European Solid-State Circuits conference (ESSDERC/ESSCIRC), Krakow, Poland
September 2019
322.
Rajabzadeh, M.; Häberle, M.; Jain, A.; Ortmanns, M.
An Integrated Readout for Current Sensing Based on a Sigma Delta Modulator with Switched Capacitor Feedback
IEEE European Solid-State Circuits conference (ESSDERC/ESSCIRC), Krakow, Poland
September 2019
321.
Nikas, A.; Jambunathan, S.; Klein, L.; Völker, M.; Ortmanns, M.
A Continuous-Time Delta-Sigma Modulator Using a Modified Instrumentation Amplifier and Current Reuse DAC for Neural Recording
IEEE Journal of Solid-State Circuits PP(99):1-13
August 2019
DOI:10.1109/JSSC.2019.2931811
320.
Rajabzadeh, M.; Häberle, M.; Ortmanns, M.
Comparison of Direct Digitization Current Sensing Circuits for EIS
15th Conference on PhD Research in Microelectronics and Electronics (PRIME 2019), Lausanne, Switzerland
July 2019
319.
Chi, J.; Mandry, H.; Ortmanns, M.
Finite Gain-Bandwidth of Q Enhancement in Bandpass CT ΣΔ Modulator and Compensation
IEEE International Symposium on Circuits and Systems (ISCAS), Sapporo, Japan, pp. 1-5.
May 2019
318.
Luo, Y.; Jain, A.; Wagner, J.; Ortmanns, M.
Input Referred Comparator Noise in SAR ADCs
IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 66, no. 5, pp. 718-722
May 2019
DOI:10.1109/TCSII.2019.2909429
317.
Mokhtar, M.; Vogelmann, P.; Wagner, J.; Ortmanns, M.
Incremental Sturdy-MASH Sigma-Delta Modulator with Reduced Sensitivity to DAC Mismatch
IEEE International Symposium on Circuits and Systems (ISCAS), Sapporo, Japan
May 2019
316.
Herkle, A.; Mandry, H.; Becker, J.; Ortmanns, M.
In-depth Analysis and Enhancements of RO-PUFs with a Partial Reconfiguration Framework on Xilinx Zynq-7000 SoC FPGAs
IEEE International Symposium on Hardware Oriented Security and Trust (HOST), Tysons Corner, USA
May 2019
DOI:10.18725/OPARU-14107
315.
Mandry, H.; Herkle, A.; Kürzinger, L.; Müelich, S.; Becker, J.; Fischer, R.; Ortmanns, M.
Modular PUF Coding Chain with High-Speed Reed-Muller Decoder
IEEE International Symposium on Circuits and Systems (ISCAS), Sapporo, Japan
May 2019
314.
Jain, A.; Abdelaal, A.; Ortmanns, M.
Effective Filtering of Requantization Error in Dual Quantized CTDSM using FIR DAC
IEEE International Symposium on Circuits and Systems (ISCAS), Sapporo, Japan, pp. 1-5.
May 2019
313.
Rajabzadeh, M.; Ungethüm, J.; Mandry, H.; Schilpp, C.; Wittekindt, O.; Ortmanns, M.
An Evaluation Study of Various Excitation Signals for Electrical Impedance Spectroscopy
IEEE International Symposium on Circuits and Systems (ISCAS), Sapporo, Japan
May 2019
312.
Luo, Y.; Jain, A.; Ortmanns, M.
A Multi-bit Delta-Sigma DAC Architecture with Internal DAC Non-linearity Suppression
Analogworkshop 2019, Universität Stuttgart
March 2019

Books

7.
Vogelmann, P.; Mokhtar, M.; 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