Question

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

Answer 1

Since the wave is symmetric

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

Now, slew rate for a sinusoidal input is given as

$S=2\pi V_{in}{f}_{m\left(max\right)}$

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