Consider the BJT op-amp circuit in Figure P13.5. The transistor parameters are: (beta(mathrm{npn})=120, beta(mathrm{pnp})=80, V_{A}=80 mathrm{~V}) (all

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Consider the BJT op-amp circuit in Figure P13.5. The transistor parameters are: \(\beta(\mathrm{npn})=120, \beta(\mathrm{pnp})=80, V_{A}=80 \mathrm{~V}\) (all transistors), and baseemitter turn-on voltage \(=0.6 \mathrm{~V}\) (all transistors).

(a) Determine the smallsignal differential-mode voltage gain.

(b) Find the differential-mode input resistance.

(c) Determine the unity-gain bandwidth.

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