Differential SAR ADC

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girih192002

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Hi

I am seeing strange problem while simulation sar adc.

ADC digital code for signal is as follows.

Signal Code
0.5V 0000 0000
0 1000 0000
-0.5V 1111 1111

I would like to invert it so that it start from max code to min code. any suggestions about this ? and one more question is why I am getting this code ?
 

I think you can invert your ADC input signal or you can change your Vref if your ic is support.
 

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