[sdiy] Best Op-Amps / oscillation

Richie Burnett rburnett at richieburnett.co.uk
Wed Nov 7 21:14:05 CET 2018


Re stability/oscillation, all op-amps have their own stability criteria, and certain things that they will tolerate vs things that they will complain about. 

Eg. Some op-amps can be wired as unity gain followers, whilst others are not stable when configured for low gains like unity. Some op-amps are happy driving capacitive loads like long cables, whilst others need some resistance in series with the output to remain stable with capacitive loads.

Most modern high-performance op-amps have a greater propensity to oscillate at MHz frequencies than old timers like the 741. Think of high-performance op-amps as like high-performance cars... You need to be a lot more careful handling a Formula 1 racing car than a family saloon. "With great power comes great responsibility."

-Richie,

Sent from my Xperia SP on O2

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