tony_lth
Advanced Member level 5
Hi, Gurus,
I am confused about the gain of an OpAmp.
As attachemnt, when I simulated the Gain of an opa,
the trace expression is (dBm(Vout[::,1])-dBm(Vin[::,1])), so I get 9.4dB gain.
But this 9.4dB is much less than the gain tested with VNA.
I think VNA tested is power, so it should be V^2/R, then the foresaid gain expression should be 2*(dBm(Vout[::,1])-dBm(Vin[::,1])), i.e. 18.8dB gain in dBm.
Am I right?
Best,
Tony Liu
I am confused about the gain of an OpAmp.
As attachemnt, when I simulated the Gain of an opa,
the trace expression is (dBm(Vout[::,1])-dBm(Vin[::,1])), so I get 9.4dB gain.
But this 9.4dB is much less than the gain tested with VNA.
I think VNA tested is power, so it should be V^2/R, then the foresaid gain expression should be 2*(dBm(Vout[::,1])-dBm(Vin[::,1])), i.e. 18.8dB gain in dBm.
Am I right?
Best,
Tony Liu