Unformatted text preview: ECE-342 Fall 2010, Sep 17 Quiz
The schematic below shows an ampliﬁer designed to provide a high input impedance with a voltage
gain of 100.
1. For the given op-amp bias current of IB = 0.1 µA, what output voltage results when the
input is grounded?
2. Show how to modify the ampliﬁer by adding a single “bias compensation resistor” to eliminate the effect of the op-amp bias current. Your modiﬁcation should not change the signal
gain, and should not signiﬁcantly impact the input impedance of the ampliﬁer. (Draw the
schematic, including the connection of the input source vin (t).) ...
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