The bias current in the CMOS current-gain op-amp in Figure 13.18 is \(I_{Q}=120 \mu \mathrm{A}\). The transistor parameters are \(V_{T N}=0.5 \mathrm{~V}, V_{T P}=-0.5 \mathrm{~V}\), \(k_{n}^{\prime}=100 \mu \mathrm{A} / \mathrm{V}^{2}, k_{p}^{\prime}=40 \mu \mathrm{A} / \mathrm{V}^{2}, \lambda_{n}=0.02 \mathrm{~V}^{-1}\), and \(\lambda_{p}=0.04 \mathrm{~V}^{-1}\). The transistor width-to-length ratios are 20 except for \(M_{5}\) and \(M_{6}\). Let \(B=3\).

(a) Determine the small-signal differential voltage gain.

(b) Find the output resistance of the circuit.

(c) If the total capacitance at the output terminal is \(5 \mathrm{pF}\), determine the dominant-pole frequency and the unity-gain bandwidth.

Transcribed Image Text:

Ms B:1 M V+ M3 MA 1:B M6 M M2 12 Figure 13.18 CMOS current-mirror op-amp Mg CL -0%