What is the largest possible input common-mode voltage


Response to the following problem:

Design the circuit of Fig. to provide a differential output voltage (i.e., one taken between the two collectors) of 1 V when the differential input signal is 10 mV. A current source of 1 mA and a positive supply of +5 V are available. What is the largest possible input common-mode voltage for which operation is as required? Assume α ? 1.

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Electrical Engineering: What is the largest possible input common-mode voltage
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