(a) Suppose the op amp of is erroneously fabricated with W5 5 30 m instead of 32 m, everything else being as specifi ed. Find vO (magnitude and polarity) for vP 5 vN 5 0. Hence, fi nd the voltage vP...

(a) Suppose the op amp of is erroneously fabricated with W5 5 30 m instead of 32 m, everything else being as specifi ed. Find vO (magnitude and polarity) for vP 5 vN 5 0. Hence, fi nd the voltage vP that, with vN still at 0 V, will drive vO to zero (this is the contribution to the input offset voltage VOS due to mismatched W5). (b) Repeat, but for the case in which the circuit is fabricated with W3 5 15 m instead of 16 m. (c) Compare the two cases and explain why similar mismatches yield so different input offset voltages.