Question

A op-amp operates as a unity gain buffer with 3 V (peak to peak) sinusoidal wave input. If op-amp is ideal with slew rate 0.5 V/$\mu$sec, then the maximum operation frequency is equal to ___kHz.

• A. 53.05

Answer 1

The correct option is A 53.05
Now, since the wave is a symmetric square wave.

$\therefore V_m=\frac{V_{p-p}}{2}=1.5V.$

Now, slew rate for a sinusoidal input is given as

$S=2\pi A{V}_m{f}_{m\left(max\right)}$ $(\because A=1)$

$\therefore f_{m\left(max\right)}=\frac{S}{2\pi V_m}=\frac{0.5\times {10}^6}{2\pi \times 1.5}=53.051kHz.$