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In differential op-amp configuration a subtractor is called as

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in Linear Integrated Circuits by (37.1k points)
In differential op-amp configuration a subtractor is called as

(a) Summing amplifier

(b) Difference amplifier

(c) Scaling amplifier

(d) All of the mentioned

This question was addressed to me during an online exam.

Query is from AC Amplifiers with Single Supply Voltage in section Operational Amplifier Applications of Linear Integrated Circuits

1 Answer

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by (39.8k points)
Correct answer is (c) Scaling amplifier

Illuminate the topic with: In a subtractor input signals can be scaled to the desired values by selecting appropriate values for the external resistors. Therefore, this circuit is referred to as scaling amplifier.

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