Search for question
Question

For the differential input stage shown below, the differential input impedance is required to be 100kΩ.

Estimate the bias current in the differential amplifier to meet this specification. Hence calculate the value of

R₂ (in kΩ) required to set this bias current. The Early voltage of the NPN transistor is 150 V and that for the

PNP is 50 V.

Fig: 1