A small-signal bipolar transistor's datasheet states at

PHYSICS · Subjective · Fermi University Physics · Electronics, Instrumentation & Communication · Semiconductor devices and analogue circuits · Semiconductor devices and analogue circuits

Inside the Instrument, Ch Multistage amplifiers, the Miller effect and output stages

Problem

A small-signal bipolar transistor's datasheet states

f_T \ge 250\,\mathrm{MHz}

I_C = 5\,\mathrm{mA}

. Using

V_T = 25.9\,\mathrm{mV}

300\,\mathrm{K}

, estimate the largest value that

C_\pi + C_\mu

can have at this bias for the datasheet's minimum

f_T

to be met.

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