bhl777
Full Member level 6
Hi All, if we have an OTA, which can generate a current proportional to (Vin-Vout), I was confused from the detailed transistor level implementation.
(1) If we have a capacitance load at the output, does that mean Iout=gm (Vin-Vout) only valid in AC domain? In another word, Iout will never has a DC component, is that true? Then a more correct decription is Iout(s)=gm [Vin(s)-Vout(s)] ?
(2) Is there any way we can mirror this Iout? For example, how can we have a current source/sink, with a fixed DC level, plus the AC component from the Iout?
Thank you!
(1) If we have a capacitance load at the output, does that mean Iout=gm (Vin-Vout) only valid in AC domain? In another word, Iout will never has a DC component, is that true? Then a more correct decription is Iout(s)=gm [Vin(s)-Vout(s)] ?
(2) Is there any way we can mirror this Iout? For example, how can we have a current source/sink, with a fixed DC level, plus the AC component from the Iout?
Thank you!