Figure 1

An op amp with a 10MHz gain-bandwidth product and maximum slew rate 100V/µs is connected as a unity-gain buffer (Figure 1):

Questions:

1. Which of the following best describes the output response to an input step from zero to 25mV? Is it:

a) the same step as the input?
b) a ramp from zero to 25mV? If so, what slope?
c) an exponential from zero to 25mV? If so, what time constant?

2. What is the small-signal bandwidth (for, say, a 100mV peak sinewave)?

3. What is the large-signal bandwidth for a 20V peak-to-peak sinewave?

Answer