A 24-Ch. Multi-Electrode Array Allowing Fast EIS to Determine Transepithelial Electrical Resistance. - Mahdi Rajabzadeh; Jonathan Ungethuem; Andreas Herkle; Carolin Schilpp; M. Fauler; Oliver Wittekindt; Maurits Ortmanns (BioCAS, 2019)

An Evaluation Study of Various Excitation Signals for Electrical Impedance Spectroscopy. - Mahdi Rajabzadeh; Jonathan Ungethuem; Holger Mandry; Carolin Schilpp; Oliver Wittekindt; Maurits Ortmanns (ISCAS, 2019)

Digital Resolution Requirements in 0-X MASH Delta-Sigma-Modulators. - Jonathan Ungethüm; John G. Kauffman; Maurits Ortmanns (ICECS, 2021)

Minimizing Signal-Dependent Residue in CT Pipelined ADCs. - Jonathan Ungethüm; John G. Kauffman; Maurits Ortmanns (MWSCAS, 2021)

Bitwise ELD Compensation in Δ∑ Modulators. - Michael Pietzko; Jonathan Ungethüm; John G. Kauffman; Qiang Li 021; Maurits Ortmanns (ISCAS, 2022)

Maximizing the Inter-Stage Gain in CT 0-X MASH Delta-Sigma-Modulators. - Jonathan Ungethüm; Michael Pietzko; John G. Kauffman; Qiang Li 021; Maurits Ortmanns (ISCAS, 2022)

A Chopped 6-bit 1.6 GS/s SAR ADC Utilizing Slow Decision Information in 22 nm FDSOI. - Jonathan Ungethüm; Michael Pietzko; Ahmed Abdelaal; John G. Kauffman; Maurits Ortmanns (ESSCIRC, 2023)

Bitwise ELD Compensation under Integrator Nonidealities in ΔΣ Modulators. - Michael Pietzko; Julian Spiess; Jonathan Ungethüm; John G. Kauffman; Qiang Li 021; Maurits Ortmanns (NEWCAS, 2023)

Delay Error Shaping in ΔΣ Modulators Using Time-Interleaved High Resolution Quantizers. - Michael Pietzko; Jonathan Ungethüm; John G. Kauffman; Maurits Ortmanns (IEEE Trans. Circuits Syst. I Regul. Pap., 2023)

Using Negative-R Assisted Integrators in Wide-band Delta-Sigma Modulators. - Ahmed Abdelaal; Michael Pietzko; Jonathan Ungethüm; John G. Kauffman; Maurits Ortmanns (ISCAS, 2024)

A 600MS/s 10-bit SAR ADC with unit via-based delta-length C-DAC in 22nm FDSOI. - Michael Pietzko; Jonathan Ungethüm; Ahmed Abdelaal; John G. Kauffman; Maurits Ortmanns (ISCAS, 2024)