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Registered Member #190
Joined: Fri Feb 17 2006, 12:00AM
Location:
Posts: 1567
I was looking at several opamps and differential opamps at Digikey. Are there any with a single supply that will provide near 50v differential (IN1 - IN2) outputs. The ones I've looked at don't allow differences that high.
Registered Member #30
Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
No op-amp can handle an input differential greater than its total supply voltage, and some are much worse than that. For instance, the NE5534 can only handle 0.7V differential. You probably want to rethink your approach to the problem: in general, no IC can handle a voltage outside of its supply rails.
(hint1: an op-amp is not a differential amp, it requires 4 resistors to make it one) (hint2: differential amps can have gains less than 1)
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differential op-amp
