For the circuit of Fig. 6.37, find an expression for the gain from to the output common-mode voltage, , in terms of the transistor small-signal parameters. If the common-mode sense and different...

For the circuit of Fig. 6.37, find an expression for the gain from to the output common-mode voltage, , in terms of the transistor small-signal parameters. If the common-mode sense and different amplifier circuits of Fig. 6.36 are used in Fig. 6.37, find an expression for the loop gain.