Question

Given that for an op-amp the gain is 10^3, the slew rate is 1.5V/μsec. Input is 5×10^-3sinωt, calculate maximum frequency to prevent distortion.

(a) 47.7 kHz

(b) 0.3 MHz

(c) 477 Hz

(d) 3 kHz

The question was posed to me in my homework.

I want to ask this question from Operational Amplifiers topic in division Op-amps and its Applications of Analog Circuits

Answer 1

The correct choice is (a) 47.7 kHz

For explanation I would say: dVOUT(max)/dT =< Slew rate

A.Vmω =< 1.5 V/μsec

10^3.5.10^-3.ω = < 1.5×10^6

ω=<0.3×10^6

Frequency f = 0.0477×10^6Hz.