Amplifier

A small signal source, Vi(t) = A cos(10^5t) + B sin(10^7t) is applied to a BJT circuit as shown in the Figure. Assume zero source resistance, VBE = 0.7 V, βdc = 99, Early voltage =...

A simplified small-signal equivalent circuit of a BJT-based amplifier is given below. The small-signal voltage gain Vo/Vs (in V/V) is _________.

For the closed loop amplifier circuit shown below, the magnitude of open loop low frequency small signal voltage gain is 40. All the transistors are biased in saturation. The curre...

In the circuit shown below, V₁ and V₂ are bias voltages. Based on input and output impedances, the circuit behaves as a

A cascade of common-source amplifiers in a unity gain feedback configuration oscillates when

In the circuit shown, the threshold voltages of the pMOS (|Vtp|) and nMOS (Vtn) transistors are both equal to 1 V. All the transistors have the same output resistance rds of 6 MΩ....

In a transconductance amplifier , it is desirable to have

An amplifier with resistive negative feedback has two left half-plane poles in its open-loop transfer function. The amplifier

An amplifier is assumed to have a single pole high frequency transfer function. The rise time of its output response to a step function input is 35 nsec. The upper 3 dB frequency (...

Negative feedback in an amplifier