Question 1 |
In the circuit shown below, V_{1} and V_{2} are bias voltages. Based on input and output impedances, the circuit behaves as a


voltage controlled voltage source. | |
voltage controlled current source. | |
current controlled voltage source. | |
current controlled current source. |
Question 1 Explanation:



Here from circuit,
M_{1} is common-gate amplifier and M_{2} behaves as an active load.
By using properties of common gate (CG) amplifier,
Input impedance \left(R_{i}\right) is low
Output impedance \left(R_{0}\right) is high
So, it is a current amplifier.
Current amplifier is a current controlled current source.
Question 2 |
A good transimpedance amplifier has
low input impedance and high output impedance. | |
high input impedance and high output impedance. | |
high input impedance and low output impedance. | |
low input impedance and low output impedance. |
Question 2 Explanation:
A good transimpedance amplifier should have low
input impedance and low output impedance
Question 3 |
A good transconductance amplifier should have
high input resistance and low output resistance | |
low input resistance and high output resistance | |
high input and output resistances | |
low input and output resistance |
Question 3 Explanation:
A good transconductance amplifier should have
very high input resistance and very high output
resistance.
Question 4 |
The desirable characteristics of a transconductance amplifier are
high input resistance and high output resistance | |
high input resistance and low output resistance | |
low input resistance and high output resistance | |
low input resistance and low output resistance |
Question 5 |
The feedback topology in the amplifier circuit ( the base bias circuit is not shown
for simplicity) in the figure is




Voltage shunt feedback | |
Current series feedback | |
Current shunt feedback | |
Voltage series feedback |
Question 5 Explanation:
The feedback topology in the amplifier circuit is
current series because
Sampling \rightarrow Current
Mixing \rightarrow Series
So current-series feedback
current series because
Sampling \rightarrow Current
Mixing \rightarrow Series
So current-series feedback
There are 5 questions to complete.