70 likes | 81 Views
Learn how to calculate the gain, resistance, and dynamic impedance in active working area for current mirrors and basic BJT amplifiers. Includes examples with given input and output currents, beta, and VT.
E N D
NNAI – Lesson 1a Current mirrors, Basic BJT amplifier
Calculate Re = ? for Iout = 10μA when Iin = 50μA. Suppose β = ∞, VT = 26mV (room temperature)
slope slope Characteristic of active load Calculate Ra for active load current is 30μA. Determine voltage gain in active area.
Dynamic impedance (resistance) of the active tranzistoru rt Dynamic impedance (resistance) of the active load ra Dynamic impedance of the output net Gain in active working area: