Electronic Design

What's All This CMRR Stuff, Anyhow?

But that’s not quite true: you will see (N+1) times (the CM error plus the gain error). So, at moderate frequencies where the gain is rolling off and the CMRR is ...
EDN

Common mode rejection in wide input range op amps

When working with real-world signals, designers often face the significant challenge of picking out a small signal from a large and varying common mode voltage. An ideal op amp would reject the common ...
EDN

Audio line input transformer boasts high CMRR

The AIT1 line input transformer from Audience offers optimized balance between windings to maximize common-mode rejection of unwanted signals, achieving a CMRR (common-mode rejection ratio) of ≥125 dB ...
Electronic Design

What's All This Noise-Rejection Stuff, Anyhow?

Download Volume 3 of the Bob Pease eBook series. IT’S WELL KNOWN THAT audio power amplifiers like to get a good set of grounds, or noise around the inputs may not be rejected properly, causing hum and ...