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AMC1300: calculation and influence of input impedance Rin

Part Number: AMC1300
Other Parts Discussed in Thread: AMC1100

Tool/software:

Hi team,

I want to know what are the bias currents of AMC1100 and AMC1300 respectively? And the calculation and influence of input impedance Rin of 28k and 22k on the resistance voltage sampling? The sampling circuit is as follows, thank you~

Thanks

Liilian