The Operational Amplifier - Bias Current and Offset Voltage

4 important questions on The Operational Amplifier - Bias Current and Offset Voltage

A voltage-follower is driven by a voltage source with a source resistance of 75 V.
(a) What value of compensating resistor is required for bias current, and where should the resistor be placed?
(b) If the two input currents after compensation are 42 mA and 40 mA, what is the output error voltage?

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Determine the compensating resistor value for each amplifier configuration in Figure 12–69, and indicate the placement of the resistor.

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A particular op-amp voltage-follower has an input offset voltage of 2 nV. What is the output error voltage?

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What is the input offset voltage of an op-amp if a dc output voltage of 35 mV is measured when the input voltage is zero? The op-amp’s open-loop gain is specified to be 200,000.

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