2.106 A Miller integrator with R = 10 kΩ and C = 10 nF is implemented by using an op amp with VOS = 2 mV, IB = 0.1 µA, and IOS = 20 nA. To provide a finite dc gain, a 1- MΩ resistor is connected across the capacitor.
(a) To compensate for the effect of IB, a resistor is connected in series with the positive-input terminal of the op amp. What should its value be?
(b) With the resistor of (a) in place, find the worst-case dc output voltage of the integrator when the input is grounded.
(a) 9.9 kΩ; (b) 0.222 V