Mitarbeiter

M. Sc. Timo Mai (Akad. Rat)

Kontakt

  • E-Mail:
  • Telefon: 09131/85-27187
  • Fax: 09131/85-28730
  • Raum: 03.235
  • Cauerstraße 9
    91058 Erlangen

Über Timo Mai

Lebenslauf

Timo Mai hat im April 2016 sein Studium der Elektrotechnik, Elektronik und Informationstechnik an der Friedrich-Alexander-Universität Erlangen-Nürnberg mit Auszeichnung abgeschlossen. Seit Mai 2016 arbeitet er als wissenschaftlicher Mitarbeiter am Lehrstuhl für Technische Elektronik. Sein Forschungsbereich umfasst dabei den Entwurf von hochpräzisen und rauscharmen integrierten Analog-/Mixed-Signal Schaltungen in CMOS zur Sensordatenauswertung.

Arbeitsgebiete

  • Entwurf und Verifikation von präzisen integrierten Analog- und Mixed-Signal-Schaltungen auf System- und Transistorebene (Operationsverstärker, Filter etc.)
  • fehlerunterdrückendes Layout von Analog-ICs
  • "WIZZ priority"-Mitglied

Abschlussarbeiten

Bitte melden, falls Interesse an einem der genannten Arbeitsgebiete besteht.

Lehrveranstaltungen Sommersemester 2019

  • Übungen zu Digitale elektronische Systeme

  • Übungen zu Analog-Digital und Digital-Analog-Umsetzer

  • Praktikum Analog-Digital-Umsetzer

Lehrveranstaltungen Wintersemester 2019

Publikationen

2019

  • D. Schuklin, J. Röber, M. Stadelmayer, T. Mai, R. Weigel, and A. Hagelauer, "Highly Integrated Low Power Photomultiplier Readout ASIC Comprising Fast ADC to Be Used in the Antarctic Ice" in 2019 IEEE 19th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF), Orlando, Florida, USA, 2019. [Bibtex]
    @inproceedings{schuklin2019,
    abstract = {After the successful launch of IceCube, the work is currently concentrated the next generation neutrino observatory at South Pole, IceCube Gen2. The neutrino detection and post processing accuracy mostly relies on used electronic hardware. The proposed highly integrated, low power photomultiplier readout ASIC is designed for function in low temperatures of Antarctic. The microchip comprises an input pre-amplifier, a clock generator and an ADC with encoder logic featuring sampling rate of 500MHz, 6bit output accuracy with a smart extension of input related resolution up to 8bit in the area of interest. It achieves the same accuracy like a standard 8bit ADC architecture but with significantly less hardware overhead and power dissipation.
    }, author = {Schuklin, Dennis and Röber, Jürgen and Stadelmayer, Markus and Mai, Timo and Weigel, Robert and Hagelauer, Amelie}, language = {English}, booktitle = {2019 IEEE 19th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF)}, cris = {https://cris.fau.de/converis/publicweb/publication/208580332}, year = {2019}, month = {02}, day = {20}, eventdate = {2019-01-20/2019-01-23}, faupublication = {yes}, peerreviewed = {unknown}, title = {Highly Integrated Low Power Photomultiplier Readout ASIC Comprising Fast ADC to Be Used in the Antarctic Ice}, type = {Konferenzschrift}, venue = {Orlando, Florida, USA}, }

2018

  • T. Mai, A. Hagelauer, and R. Weigel, "Maximizing Temperature and Process Corner Performance of Operational Amplifiers with a Novel Self-Adjusting Biasing Technique" in Austrian Workshop on Microelectronics, Graz University of Technology, 2018, p. 4. [Bibtex]
    @inproceedings{mai2018,
    abstract = {A novel self-adjusting biasing technique for current sources in CMOS operational 

    amplifiers is presented.
    The method is deduced from the fundamental characteristics of a mosfet and a simple line of reasoning.
    Opamps using this technique can produce a more constant gain over process corners 
    and temperature. This is especially important under
    large-signal conditions, when the output 
    is near one of the supply rails or a large current needs to be driven. 
    Therefore it reduces worst case distortion in a given Opamp circuit that uses feedback
    over temperature and process corners.
    It is also capable of driving low-$V_t$-devices that typically exhibit less noise, increasing
    the achievable noise performance of the Opamp almost without additional current consumption.
    The method was implemented and simulated in tsmc 180 nm CMOS. 
    Simulation results are presented that clearly show the increased performance compared 
    to the state of the art.
    }, author = {Mai, Timo and Hagelauer, Amelie and Weigel, Robert}, language = {English}, booktitle = {Austrian Workshop on Microelectronics}, cris = {https://cris.fau.de/converis/publicweb/publication/208516281}, year = {2018}, month = {09}, day = {27}, eventdate = {2018-09-27/2018-09-27}, faupublication = {yes}, keywords = {operational amplifier; gain boosting; adaptive biasing; monticelli; process variations}, pages = {4}, peerreviewed = {unknown}, title = {Maximizing Temperature and Process Corner Performance of Operational Amplifiers with a Novel Self-Adjusting Biasing Technique}, type = {Konferenzschrift}, venue = {Graz University of Technology}, }

2017

  • T. Mai, K. Schmid, A. Hagelauer, R. Weigel, and J. Röber, "A fully-differential Operational Amplifier using a new Chopping Technique and Low-Voltage Input Devices" in 24th IEEE International Conference on Electronics, Circuits and Systems, Batumi, Georgia, 2017, pp. 74-77. [DOI] [Bibtex]
    @inproceedings{mai2017,
    abstract = {A fully differential CMOS operational amplifier is presented. It uses a new chopping technique that works without the use of switching transistors in the high gain path, resulting in high noise performance and low offset. It is designed in a low-cost 180 nm process with a 5V supply voltage. In critical places, such as the differential pair, 1.8V-devices are used, as they provide much better matching and noise performance, and at the same time have lower parasitics. They are protected from breakdown conditions by several circuit techniques. Some of them are described below. The operational amplifier is used in a differential programmable gain amplifier for processing signals of up to 50 kHz bandwith with a SINAD > 100 dB, making it suitable as a preamplifier for 18-Bit ADCs.},
    author = {Mai, Timo and Schmid, Konstantin and Hagelauer, Amelie and Weigel, Robert and Röber, Jürgen},
    language = {English},
    booktitle = {24th IEEE International Conference on Electronics, Circuits and Systems},
    cris = {https://cris.fau.de/converis/publicweb/publication/108861104},
    year = {2017},
    month = {12},
    day = {05},
    doi = {10.1109/ICECS.2017.8292081},
    eventdate = {2017-12-05/2017-12-08},
    faupublication = {yes},
    keywords = {chopping; operational amplifier; gain boosting; 1/f-noise; offset; programmable gain amplifier;},
    pages = {74--77},
    peerreviewed = {unknown},
    title = {A fully-differential Operational Amplifier using a new Chopping Technique and Low-Voltage Input Devices},
    type = {Journal Article},
    venue = {Batumi, Georgia},
    }

2016

  • C. Söll, T. Mai, L. Shi, J. Röber, T. Ußmüller, R. Weigel, and A. Hagelauer, "Low-Power High-Gain Operational Amplifier for Analog Image Pre-Processing in Smart Sensor Systems" in 15. ITG/GMM-Fachtagung Analog 2016, Bremen, 2016, pp. 28-32. [Bibtex]
    @inproceedings{soell2016c,
    abstract = {In this work, a low-power high-gain operational amplifier is presented, which is dedicated to work in an analog image pre-processing stage in a smart sensor system. This stage is able to detect edges and shapes for instance, before the image is passed to the ADC and the digital computation stage, reducing data and precision requirement of both stages. This approach helps to save power, making smart image sensor nodes with energy harvesting reasonable. Since the precision as well as the energy consumption of the edge detection algorithm is highly depended on the amplifier used for the basic summing and multiplier blocks, the design of it plays an important role for the approach. The proposed input/output rail-to-rail operational amplifier is based on a 150 nm CMOS process, has a gain of 77 dB and a unity gain bandwidth of 45.7MHz while consuming only 77 µA statically at a supply voltage of 1.8V.},
    author = {Söll, Christopher and Mai, Timo and Shi, Lan and Röber, Jürgen and Ußmüller, Thomas and Weigel, Robert and Hagelauer, Amelie},
    booktitle = {15. ITG/GMM-Fachtagung Analog 2016},
    cris = {https://cris.fau.de/converis/publicweb/publication/122848044},
    year = {2016},
    month = {09},
    faupublication = {yes},
    isbn = {9783800742653},
    keywords = {analog pre-processing; operational amplifier; low-power; high-gain; folded-cascode; GRK-1773},
    pages = {28--32},
    peerreviewed = {Yes},
    title = {Low-Power High-Gain Operational Amplifier for Analog Image Pre-Processing in Smart Sensor Systems},
    venue = {Bremen},
    }

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