Question

What is incorrect regarding the output offset voltage of op-amp?

(a) It is the output when the input voltage at both input pins of op-amp is zero

(b) It occurs due to dissimilarities in the internal structure of the op-amp

(c) The output offset voltage does not depend on the supply voltage

(d) The output offset voltage can be in the units of Volts

I got this question during an interview.

The query is from Op-Amp Characteristics in portion Op-amps and its Applications of Analog Circuits

Answer 1

Right answer is (c) The output offset voltage does not depend on the supply voltage

The best explanation: Output offset voltage is the output voltage of the op-amp when the input at both terminals is zero. It occurs due to the dissimilarities and mismatches in the internal structure of the op-amp. The value of output offset voltage is in volts. It varies with changes in supply voltage.