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What is the formula for total output offset voltage with feedback?

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in Linear Integrated Circuits by (37.1k points)
What is the formula for total output offset voltage with feedback?

(a) VooT = ± Vo/(1+AB)

(b) VooT = ± Vsat*(1+AB)

(c) VooT = ± Vsat/(1+AB)

(d) VooT = ± Vo*(1+AB)

The question was posed to me during an internship interview.

My query is from Voltage Series Feedback Amplifier topic in section Operational Amplifier Characteristics of Linear Integrated Circuits

1 Answer

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by (39.8k points)
Right option is (c) VooT = ± Vsat/(1+AB)

Check out the details: The total output offset voltage with feedback = (Total output offset voltage witput feedback) / (1+AB). i.e. VooT = ± Vsat/(1+AB).

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