Question

What is input offset voltage??

Answer 1

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Input offset voltage

This is small voltage that must be applied between the two input terminals of the op amp to make output voltage zero.

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Answer 2

Input Offset Voltage:

Input offset voltage is defined as the voltage that must be applied between the two input terminals of an OPAMP to null or zero the output fig. 2, shows that two dc voltages are applied to input terminals to make the output zero.