Interfacing to the Analog World

Q1:
Referring to the given figure, what appears to be wrong, if anything, with the D/A converter and what should be done to correct the problem?

A There is nothing wrong with the converter.

B There is an offset error; if no provision is made for adjusting the offset, the op-amp may need to be changed.

C There is a nonlinearity error; the op-amp must be changed.

D The power supply voltage appears to be too high; adjust the power supply to the correct value.

ANS:B - There is an offset error; if no provision is made for adjusting the offset, the op-amp may need to be changed.

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