Question

Errors in the output voltage of an actual integrated circuit operational amplifier can be caused by : Select one:
a. Zero offset voltages and currents
b. Low open-loop voltage gain
c. High slew rate for signals which change quickly
d. All of these
e. High bandwidth for high frequency signals

Answer 1

Answer:

Option B

Explanation:

An operational amplifier usually has a high open loop gain of around 10^5 which allows a wide range get of feed back levels in order to achieve the desired performance so therefore a low open loop gain reduces the range feed back level thereby reducing the performance which can cause errors in the output voltage.