Consider the differential amplifier shown in Figure P11.13 with mismatched collector resistors. The circuit and transistor parameters are \(V^{+}=5 \mathrm{~V}\), \(V^{-}=-5 \mathrm{~V}, \beta=120, V_{B E}(\) on \()=0.7 \mathrm{~V}\), and \(V_{A}=\infty\).

(a) For \(\Delta R=0\), design the circuit such that \(I_{C Q 1}=I_{C Q 2}=120 \mu \mathrm{A}\) and \(v_{C 1}=v_{C 2}=3 \mathrm{~V}\) for \(v_{1}=v_{2}=0\).

(b) Using the results of part (a), determine \(\left|A_{d}\right|\) for a twosided output.

(c) For \(\Delta R=500 \Omega\), determine \(A_{d}, A_{c m}\), and \(\mathrm{CMRR}_{\mathrm{dB}}\) for \(v_{o}=\Delta\left(v_{C 1}-v_{C 2}\right)\)

Transcribed Image Text:

RC + AR Figure P11.13 V+ - VCI UC2 22 www RE RC-R AR 2