M
Matteo
- Jan 1, 1970
- 0
Rodger Rosenbaum ha scritto:
gosh ..the right expression is:
f = ( 2*PI*(Rs*Cgs1 + Cgd1*2*Rs + Rd*(Cgd2+Cdb2+Cl) + 1/gm2*(Cdb1+Cgs2) )-1
and with the values f = 2.08EE+08 Hz.. very similar to the CS's one
you sad that you got a corner frequency of 315 MHz for the CS
amplifier, and a corner frequency of 984 MHz for the cascode.
did you get these values using the simulator? they are really very
different from the values obtained from manual calculations...
I see two differences compared to the expression in your original post.
should be 770EE-15
About the first difference: in your posted expression you have Cds1; I used the
value for Cdb1 for that.
The second difference is * instead of +. Maybe it should really be +, but in
the expression you posted it's *.
gosh ..the right expression is:
f = ( 2*PI*(Rs*Cgs1 + Cgd1*2*Rs + Rd*(Cgd2+Cdb2+Cl) + 1/gm2*(Cdb1+Cgs2) )-1
and with the values f = 2.08EE+08 Hz.. very similar to the CS's one
you sad that you got a corner frequency of 315 MHz for the CS
amplifier, and a corner frequency of 984 MHz for the cascode.
did you get these values using the simulator? they are really very
different from the values obtained from manual calculations...