Why opamp does not give high frequency gain?

[deepabhargavi]

why opamp does not give high frequency gain?

 

[safwatonline]

opamp gain

at high frequency caps dominate and the output resistance decrease (of internal OTAs) and hence the gain

 

[amriths04]

Re: opamp gain

at high frequencies the gain is less because the unity gain bw product has to be maintained. so as bw increases gain decreases.

another reason at high freq cap become short. so resistence decreases so gain decreases.

AMRITH.S.

 

[suvendu]

opamp gain

The gain of an opamp is controlled by resistor and capacitor connected to it.at high frequency gain decreases because of the capacitor.

 

[mdanaie]

opamp gain

at high frequencies the output capacitance of the amplifier decreses the load impedance significantly and we know that gain is equal to Gm. Zout . While Gm value remains constant the value of Zout decreases, hence it fails to proudue a large gain