Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology
Makoto Ishida
Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology Electronics-Inspired Interdisciplinary Research Institute (EIIRIS), Toyohashi University of Technology
A current noise reduction technique in chopper instrumentation amplifier (CIA) for high-impedance sensor is presented. The proposed technique is based on a time gating method to reduce time varying shot noise which is induced by channel charge injection of chopper switch transistors. An implemented CIA with the proposed time gating technique achieves more than 80-% noise reduction capability.
