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Which of the following is the property of instrumentational amplifier?

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Which of the following is the property of instrumentational amplifier?

(a) Extremely low input impedance

(b) High bias and offset currents

(c) Low slew rate

(d) Very high CMRR

I had been asked this question during a job interview.

Question is from Measurement of Hearing in division Audiometry of Biomedical Instrumentation

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The correct option is (d) Very high CMRR

The best explanation: Instrumentational amplifiers have very high CMRR. Instrumentational amplifiers have extremely high input impedance. Instrumentational amplifiers have low bias and offset currents. Instrumentational amplifiers have high slew rate.

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