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PGA411-Q1: On the Sin+and Sin-pin Input Signal Amplitude of PGA411

Part Number: PGA411-Q1


The two diagrams above are my sketches and the waveforms of sin + and sin-input pins I measured. There are differences in the amount of input in the chart, but there is no difference in COS input.

I want to know why the magnitude in the picture is different in size, and how does this difference make it disappear?