4a. Please show all steps clearly. I will thumbs up if correct.
Thank you.
4a.
An operational amplifier is tested in the laboratory for input bias current, using the circuit shown in Figure Q4a.
(i) (ii)
Estimate the input bias current. What other information does the graph reveal?
[4 marks]
switch
A out
A
100s
C=0.1 uF
time
out
-2 V
Figure Q4a: Input Bias Current test circuit