A differential amplifier is invariably used in the i/p stage of all op-amps. This is done basically to provide the op-amps with a very high______________?

Related Mcqs:

1. How many op-amps are required to implement this equationop-amps?

   A. 2 B. 3 C. 4 D. 1...

2. A differential amplifier has a differential gain of 20,000. CMMR=80dB. The common mode gain is given by_______________?

   A. 2 B. 1 C. 1/2 D. 0...

3. In the differential voltage gain & the common mode voltage gain of a differential amplifier are 48db & 2db respectively, then its common mode rejection ratio is________________?

   A. 23dB B. 25dB C. 46dB D. 50dB...

4. How many op-amps are required to implement this equation Vo = V1?

   A. 4 B. 3 C. 2 D. 1...

5. An amplifier using an opamp with slew rate SR=1v/sec has a gain of 40db.If this amplifier has to faithfully amplify sinusoidal signals from dc to 20KHz without introducing any slew-rate induced distortion, then the input signal level exceed_____________?

   A. 795mV B. 395mV C. 795mV D. 39.5mV...

6. For an op-amp having differential gain Av and common-mode gain Ac the CMRR is given by___________?

   A. Av + Ac B. Av / Ac C. 1 + Av / AC. D. Ac / Av...

7. Differential amplifiers are used in______________?

   A. Instrumentation amplifiers B. Voltage followers C. Voltage regulators D. Buffers...

8. The closed-loop voltage gain of an inverting amplifier equal to______________?

   A. The ratio of the input resistance to feedback resistance B. The open-loop voltage gain C. The feedback resistance divided by the input resistance D. The input resistance...

9. Which of the following amplifier is used in a digital to analog converter?

   A. Non inverter B. Voltage follower C. Summer D. Difference amplifier...

10. A 741-Type OP-AMP has a gain-bandwith product of 1MHz. A non-inverting amplifier using this opamp & having a voltage gain of 20db will exhibit -3db bandwidth of______________?

    A. 50KHz B. 100KHz C. 1000/17KHz D. 1000/7.07KHz...