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

Papers

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.
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
October 2019
DOI: 10.1109/JSSC.2019.2942359
322.
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 European Solid-State Circuits conference (ESSDERC/ESSCIRC), Krakow, Poland
September 2019
321.
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
320.
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
319.
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
318.
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
317.
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
316.
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
315.
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
314.
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
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.
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
311.
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
310.
Qi , L. ; Jain , A. ; Jiang , D. ; Sin , S. ; Martins , R. ; Ortmanns , M.
A 76.6dB-SNDR 50MHz-BW 29.2mW Noise-Coupling-Assisted CT Sturdy MASH ΔΣ Modulator with 1.5b/4b Quantizers in 28nm CMOS
IEEE International Solid- State Circuits Conference - (ISSCC), San Francisco, USA
February 2019
https://ieeexplore.ieee.org/document/8662529
309.
Vogelmann , P. ; Wagner , J. ; Haas , M. ; Ortmanns , M.
A Dynamic Power Reduction Technique for Incremental ΔΣ Modulators
IEEE Journal of Solid-State Circuits
January 2019

2018

308.
Lv , L. ; Jain , A. ; Zhou , X. ; Becker , J. ; Li , Q. ; Ortmanns , M.
A 0.4-V Gm–C Proportional-Integrator-Based Continuous-Time Delta-Sigma Modulator With 50-kHz BW and 74.4-dB SNDR
IEEE Journal of Solid-State Circuits, vol. 53, no. 11, pp. 3256-3267
November 2018
307.
Wagner , J. ; Vogelmann , P. ; Ortmanns , M.
On the Optimization of DT Incremental Sigma-Delta Modulators in Combination with CoI Reconstruction Filters
2nd New Generation of Circuits & Systems Conference (NGCAS 2018), Valetta, Malta
November 2018
306.
Wagner , J. ; Vogel , F. ; Kuhm , F. ; Ortmanns , M.
Automated Synthesis of Subsampling CT Bandpass Sigma-Delta Modulators with Non-Idealities
2nd New Generation of Circuits & Systems Conference (NGCAS 2018), Valetta, Malta
November 2018
305.
Haas , M. ; Ortmanns , M.
Efficient implementation and stability analysis of a HV-CMOS current/voltage mode stimulator
IEEE/CAS-EMB Biomedical Circuits and Systems Conference (BioCAS) 2018, Cleveland, USA
October 2018
304.
Herkle , A. ; Becker , J. ; Ortmanns , M.
Methoden zur Verbesserung von CMOS integrierten Arbiter-PUFs
16. GMM/ITG-Fachtagung Analog, München, Germany
September 2018
DOI: 10.18725/OPARU-17977
303.
Häberle , M. ; Djekic , D. ; Fantner , G. ; Lips , K. ; Ortmanns , M. ; Anders , J.
An integrator-differentiator TIA using a multi-element pseudo-resistor in its DC servo loop for enhanced noise performance
ESSCIRC 2018 - 44th IEEE European Solid State Circuits Conference, Dresden, Germany
September 2018
https://ieeexplore.ieee.org/document/8494290
302.
Djekic , D. ; Fantner , G. ; Lips , K. ; Ortmanns , M. ; Anders , J.
A 0.1% THD, 1-MOhm to 1-GOhm Tunable, Temperature-Compensated Transimpedance Amplifier Using a Multi-Element Pseudo-Resistor
IEEE Journal of Solid-State Circuits, vol. 53, no. 7, pp. 1913-1923
July 2018
301.
Vogelmann , P. ; Wagner , J. ; Hänsler , A. ; Ortmanns , M.
On Incremental ∆Σ Modulators with SNR and SQNR Enhancement by Recuperation Phase
IEEE International Symposium on Circuits and Systems (ISCAS), Florence, Italy
May 2018
https://www.uni-ulm.de/fileadmin/website_uni_ulm/iui.inst.010/downloads/Vogelmann_ISCAS_2018-05.pdf

Books

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

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