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Overvoltage Behavior of AD8250

Question asked by chunlee on Mar 20, 2017
Latest reply on Jun 22, 2017 by Gauzz

I am testing the overvoltage behavior of instrumentation amplifier AD8250.
What I don't understand is when I put in a +20V input to its IN+ and with its IN- grounded, I got a 10.9V (Supply is +/-15V). Shouldn't I expect to get 13.5V since this is the maximum swing? Instead I noticed the output voltage drops more when I increase the overvoltage level to an even higher voltage. Any explanation?