(2018) Capacitively-Coupled Chopper Instrumentation Amplifiers : an Overview

Authors:
Qinwen Fan, Kofi Makinwa

Abstract:
CCIAs have been extensively explored over the past decade. Major improvements include techniques to boost input-impedance, robustly bias the virtual ground, improve immunity to large AC CM interference, achieve beyond-the-rails CMVR capability. Together with low offset, low 1/f noise and high power efficiency, CCIAs have become more and more popular in many applications such as biomedical readout, HV current sensing, and LV power-efficient sensing interfaces.

[chaowang]

Nice video, I have got a general understanding of the development of CCIA circuits in the past 10 years, thanks for sharing!

[td]

This is a really great video = thank you! I am just an EE hobbyist. I love to build my own EE bench tools. I was considering a typical 3-op amp design, but it is clear that a modern IA chip would provide much better spec's. So, what might be a really good IC to consider? Thanks!

[elkhansaadine]

it's a clear explication. thank you so much

[GreenmanPV]

why we dont need low pass filter for CCIA? Can anyone tell me why?

[marcallima]

what if... we use 3 chopper amplifiers and build a "choppered instrumentation amplifier".