Transconductance and input impedance of simple two-stage amplifier

Status
Not open for further replies.
P

promach

Advanced Member level 4
Joined
Feb 22, 2016
Messages
1,199
Helped
2
Reputation
4
Reaction score
5
Trophy points
1,318
Activity points
11,636
The absolute value of this transconductance equals half the transconductance of each side of the input pair.

the input impedance rp3//cp3 equals half that of the individual transistors T2a and T2b
Click to expand...

For this simple two-stage amplifier circuit , could anyone help to explain the two sentences above ?


 

The second is wrong, I believe. I would expect double impedance. Capacitance component under the assumption of an ideal current source.
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…