M.Sc. Jonathan Ungethüm

Jonathan Ungethüm received the B.Sc. and M.Sc. degrees in electrical engineering from the University of Ulm, Germany, in 2016 and 2019, respectively. During his studies he worked with the Institute of Microelectronics, University of Ulm, Germany in the field of bio-medical impedance measurement systems.

He is currently working towards the Ph.D. degree at the Institute of Microelectronics. His research interests include mixed signal CMOS circuit design and data converters.

Studentische Arbeiten

[mt] = Masterarbeit, [rp] = Bachelorarbeit

Aktuelle Arbeiten

Fouad Elbadry
Design and Implementation of a High-Speed Delta-Sigma Modulator for a 0-4 MASH ADC [mt]

Abgeschlossene Arbeiten

Luka Stöhr
Implementation of a Digital Correction Chain for a 0-X MASH ΔΣ-ADC [mt]
Swikriti Saini
Design of a Single-Channel SAR ADC using a 22nm FDSOI Technology [mt]

Publikationen

2024

11.

Pietzko, M.; Ungethüm, J.; Abdelaal, A.; Kauffman, J. G.; Ortmanns, M.
A 600MS/s 10-bit SAR ADC with unit via-based delta-length C-DAC in 22nm FDSOI
Accepted at IEEE International Symposium on Circuits and Systems (ISCAS), Singapur
May 2024

2023

10.

Ungethüm, J.; Pietzko, M.; Abdelaal, A.; Kauffman, J. G.; Ortmanns, M.
A Chopped 6-bit 1.6 GS/s SAR ADC Utilizing Slow Decision Information in 22 nm FDSOI
ESSCIRC 2023- IEEE 49th European Solid State Circuits Conference (ESSCIRC)
September 2023

DOI:	10.1109/ESSCIRC59616.2023.10268704

9.

Pietzko, M.; Spiess, J.; Ungethüm, J.; Kauffman, J. G.; Li, Q.; Ortmanns, M.
Bitwise ELD Compensation under Integrator Nonidealities in ΔΣ Modulators
21st IEEE Interregional NEWCAS Conference (NEWCAS), Edinburgh, United Kingdom
June 2023

DOI:	10.1109/NEWCAS57931.2023.10198050

8.

Pietzko, M.; Ungethüm, J.; Kauffman, J. G.; Ortmanns, M.
Delay Error Shaping in ΔΣ Modulators Using Time-Interleaved High Resolution Quantizers
IEEE Transactions on Circuits and Systems I: Regular Papers
May 2023

DOI:	10.1109/TCSI.2023.3269573

2022

7.

Pietzko, M.; Ungethüm, J.; Kauffman, J. G.; Li, Q.; Ortmanns, M.
Bitwise ELD Compensation in ∆Σ Modulators
IEEE International Symposium on Circuits and Systems (ISCAS), Austin, USA
May 2022

DOI:	10.1109/ISCAS48785.2022.9937305

6.

Ungethüm, J.; Pietzko, M.; Kauffman, J. G.; Li, Q.; Ortmanns, M.
Maximizing the Inter-Stage Gain in CT 0-X MASH Delta-Sigma-Modulators
IEEE International Symposium on Circuits and Systems (ISCAS), Austin, TX, USA
May 2022

DOI:	10.1109/ISCAS48785.2022.9937739

2021

5.

Ungethüm, J.; Kauffman, J. G.; Ortmanns, M.
Digital Resolution Requirements in 0-X Mash Delta-Sigma-Modulators
2021 IEEE International Conference on Electronics Circuits and Systems (ICECS)
November 2021

4.

Ungethüm, J.; Kauffman, J. G.; Ortmanns, M.
Minimizing Signal-Dependent Residue in CT Pipelined ADCs
2021 IEEE International Midwest Symposium on Circuits and Systems (MWSCAS)
August 2021

3.

Rajabzadeh, M.; Ungethüm, J.; Herkle, A.; Schilpp, C.; Becker, J.; Fauler, M.; Wittekindt, O.; Frick, M.; Ortmanns, M.
A PCB Based 24-Ch. MEA-EIS Allowing Fast Measurement of TEER
IEEE Sensor Journal
March 2021

DOI:	10.1109/JSEN.2021.3067823

2019

2.

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

1.

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