Institute of Microelectronics

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

Papers  Books  Patents 

Papers

2008

60.
Peters, C.; Henrici, F.; Ortmanns, M.; Manoli, Y.
High-Bandwidth Floating Gate CMOS Rectifiers with Reduced Voltage Drop
IEEE Int. Symp. on Circuits and Systems (ISCAS), Seattle, USA
2008
59.
Shahein, A.; Becker, M.; Lotze, N.; Ortmanns, M.; Manoli, Y.
Optimized Scheme for Power-of-Two Coefficient Approximation for Low Power Decimation Filters in Sigma Delta ADCs
IEEE Midwest Symposium on Circuits and Systems (MWSCAS), Knoxville, USA
2008
58.
Henrici, F.; Peters, C.; Becker, J.; Ortmanns, M.; Manoli, Y.
Reliability Study of Single-Poly Floating Gates in 0.13 µm CMOS for use in Field Programmable Analog Arrays
IEEE Midwest Symposium on Circuits and Systems (MWSCAS), Knoxville, USA
2008
57.
Lotze, N.; Ortmanns, M.; Manoli, Y.
Variability of flip-flop timing at sub-threshold voltages
Proc. IEEE International Symposium on Low-Power Electronic Devices 2008 (ISLPED), Bangalore, India
2008

2007

56.
Ortmanns, M.; Rocke, A.; Gehrke, M.; Tiedtke, H.-J.
A 232 Channel Epiretinal Stimulator ASIC for a Vision Prosthesis
IEEE Journal of Solid State Circuits, Vol.42, No.12, pp. 2946-2959
2007
55.
Ortmanns, M.; Unger, N.; Rocke, A.; Rackow, S.; Gehrke, M.; Tiedtke, H.-J.
A 232 channel visual prosthesis ASIC with production compliant safety and testability
IEEE Int. Conf. on Solid State Circuits (ISSCC), San Francisco, USA
2007
54.
Ortmanns, M.; Gehrke, M.; Tiedtke, H.-J.
A Stimulator ASIC for a 232 Channel Retinal Implant
41. Jahrestagung der Deutschen Gesellschaft für Biomedizinische Technik, Aachen
2007
53.
Ortmanns, M.
Charge Balancing in Functional Electrical Stimulators: a Comparative Study
IEEE Int. Symp. on Circuits and Systems (ISCAS), New Orleans, USA
2007
52.
Saleh, S.; Ortmanns, M.; Manoli, Y.
A Comparative Study of CMOS LNAs in proc
IEEE European Conference on Circuits Theory and Design, ECCTD, pp.76-79
2007
51.
Henrici, F.; Becker, J.; Buhmann, A.; Ortmanns, M.; Manoli, Y.
A Continuous-Time Field Programmable Analog Array Using Parasitic Capacitance Gm-C Filters
IEEE Int. Symp. on Circuits and Systems (ISCAS), New Orleans, USA
2007
50.
Keller, M.; Buhmann, A.; Ortmanns, M.; Manoli, Y.
A Method for the Discrete-Time Simulation of Continuous-Time Sigma-Delta Modulators
IEEE Int. Symp. on Circuits and Systems (ISCAS), New Orleans, USA
2007
49.
Lotze, N.; Ortmanns, M.; Manoli, Y.
A Study on Self-Timed Asynchronous Subthreshold Logic
IEEE International Conf. on Computer Design (ICCD), Washington, DC, USA
2007
48.
Maurath, D.; Peters, C.; Ortmanns, M.; Manoli, Y.
Adaptive Power Extraction from Micro Generators with Implicit Voltage Up-Conversion
PowerMEMS, pp. 281-284, Freiburg, Germany
2007
47.
Peters, C.; Kessling, O.; Henrici, F.; Ortmanns, M.; Manoli, Y.
CMOS Integrated Highly Efficient Full Wave Rectifier
IEEE Int. Symp. on Circuits and Systems (ISCAS), New Orleans, USA
2007
46.
Anders, J.; Mathis, W.; Ortmanns, M.
Entwurf von zeitkontinuierlichen Sigma-Delta Modulatoren - Äquivalenz zwischen zeitkontinuierlichen und zeitdiskreten Systemen
Advances in Radio Science 5, pp. 221-224
2007
45.
Buhmann, A.; Keller, M.; Ortmanns, M.; Manoli, Y.
Estimating Circuit Nonidealities of Continuous-Time Multibit Delta-Sigma Modulators
IEEE Int. Symp. on Circuits and Systems (ISCAS), New Orleans, USA
2007
44.
Maurath, D.; Peters, C.; Ortmanns, M.; Manoli, Y.
Hocheffiziente integrierte Gleichrichterschaltungen und Spannungsverstärker für Energy Harvesting Anwendungen
Advances in Radio Science Vol. 6 (Kleinheubacher Berichte), Miltenberg, Germany
2007
43.
Peters, C.; Ortmanns, M.; Manoli, Y.
Low Power High Performance Voltage Rectifier for Autonomous Microsystems
PowerMEMS, Freiburg, Germany
2007
42.
Keller, M.; Buhmann, A.; Ortmanns, M.; Manoli, Y.
On the implicit anti-aliasing feature in continuous-time sigma-delta Modulators
IEEE Trans. on Circuits and Systems I, Vol.54, No.12, pp. 2639-2645
2007
41.
Keller, M.; Buhmann, A.; Ortmanns, M.; Manoli, Y.
On the Implicit Anti-Aliasing Feature of Continuous-Time Multistage Noise-Shaping Sigma-Delta Modulators
IEEE Int. Symp. on Circuits and Systems (ISCAS), New Orleans, USA
2007
40.
Lotze, N.; Ortmanns, M.; Manoli, Y.
Untersuchung von asynchronen Timing-Strategien für digitale Subthreshold-Schaltungen
Advances in Radio Science Vol. 6 (Kleinheubacher Berichte), Miltenberg, Germany
2007

2006

39.
Ortmanns, M.; Unger, N.; Rocke, A.; Gehrke, M.; Tiedtke, H.-J.
A 0.1mm², digitally programmable stimulation pad cell for a retinal implant with high-voltage capability
IEEE Int. Conf. on Solid State Circuits (ISSCC), San Francisco, USA
2006
38.
Ortmanns, M.; Unger, N.; Rocke, A.; Gehrke, M.; Tiedtke, H.-J.
A Retina Stimulator ASIC with 232 Electrodes, Custom ESD Protection and Active Charge Balancing
IEEE Int. Symp. on Circuits and Systems (ISCAS), Kos Island, Greece
2006
37.
Ortmanns, M.
Modellierung und Simulation zeitkontinuierlicher Sigma-Delta A/D Umsetzer
Advances in Radio Science Vol. 5 (Kleinheubacher Berichte), Miltenberg, Germany
2006
36.
Gerfers, F.; Ortmanns, M.; Schmitz, P.
A Transistor-based Clock Jitter Insensitive DAC Architecture
IEEE Int. Symp. on Circuits and Systems (ISCAS), Kos Island, Greece
2006

Books

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
January 2023
DOI:doi.org/10.1007/978-3-031-22231-3_5

2021

8.
Haas, M.; Ortmanns, M.
Neural Stimulation Circuits
Publisher: River Publishers
Selected Topics in Biomedical Circuits and Systems, Eds Minkyu Je and Myung Hoon Sunwoo Edition
February 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
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