WorksheetsECE315_cascode&mirrors
Total questions: 5
Worksheet time: 3mins
Name
Class
Date
1.
In a bipolar cascode stage, what is the maximum output impedance primarily limited by?
a)
Collector current
b)
Emitter resistance
c)
Base current
d)
rπ between emitter and ground
2.
What is the primary advantage of using a cascode amplifier?
a)
Reduced size
b)
Simpler design
c)
Higher output impedance
d)
Lower power consumption
3.
What is the typical output impedance of a bipolar cascode compared to a CE stage?
a)
Lower
b)
Equal
c)
Higher
d)
Unpredictable
4.
The output resistance of a cascode amplifier is given by:
a)
rout=ro1
b)
rout=ro1+ro2
c)
rout=ro1∥ro2
d)
rout=ro1(1+gm2ro2)
5.
What is the primary purpose of a current mirror?
a)
To reduce noise
b)
To increase power supply
c)
To sense and duplicate current
d)
To amplify voltage
100 %
