Question

For operation with 10-V output pulses with the requirement that the sum of the rise and fall times represent only 20% of the pulse width (at half amplitude), what is the slew-rate requirement for an op amp to handle pulses 2 µs wide? (Note: The rise and fall times of a pulse signal are usually measured between the 10%- and 90%-height points.)

(a) 10 V/µs

(b) 20 V/µs

(c) 40 V/µs

(d) 80 V/µs

I had been asked this question during a job interview.

Origin of the question is Large Signal Operations on operational Amplifiers topic in section Operational Amplifiers of Electronic Devices & Circuits

Answer 1

Right answer is (c) 40 V/µs

Best explanation: None.