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PGA855: Simulation Outputs is not as Expectation

Hao Jie Chan
Intellectual 260 points
Part Number: PGA855

Hi, 

I am doing a simulation on PGA855, and I found that the reference simulation result is not as expected.

I am simulating straight from TINA reference design, where it is injecting a 1V amplitude differential signal into PGA855, with gain of 4.

But the output is only a 3V differential signal. Since this is coming from a reference simulation, I am not sure if I missed something.

And the simulation file also includes this snapshot of result: 1V amplitude In_Diff, 3V amplitude Out_diff.