Op Amp Protection
Walt Jung, Walt Kester, James Bryant, Joe Buxton and Wes Freeman
Frequently, op amps and other analog ICs require protection against destructive potentials at their input and output terminals. One basic reason behind this is that these ICs are by nature relatively fragile components. Although designed to be as robust as possible for normal signals, there are nevertheless certain application and/or handling conditions where they can see voltage transients beyond their ratings. This situation can occur for either of two instances. The first of these is in-circuit, that is, operating within an application circuit. The second instance is out-of-circuit, which might be at anytime after receipt from a supplier, but ...
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