Centre of Applied Research Technology

A broadband, high common-mode rejection ratio instrumentation amplifier


An operational amplifier based instrumentation amplifier (IA) with a common-mode rejection ratio (CMRR) independent of resistance tolerances is presented in this paper. The CMRR is determined by the operational amplifier characteristics. The IA shows a high CMRR up to 100 kHz. Moreover, since the presented IA operates in the current domain, no large internal voltage swings occur, making it an interesting choice for low-voltage applications in situations where common-mode disturbances may affect the signal processing.

Reference van der Horst, M. J. (2021). A broadband, high common-mode rejection ratio instrumentation amplifier. Paper presented at 2021 ASIA PACIFIC INTERNATIONAL SYMPOSIUM ON ELECTROMAGNETIC COMPATIBILITY, Kuta Selatan, Indonesia. https://doi.org/10.1109/APEMC49932.2021.9596926
27 September 2021

Publication date

Sep 2021


Research database