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I mentioned the microsec delay because that much phase shift doesn't affect the signals I'm trying to capture.
I was just trying to indicate my starting point using a multiplexer and then go for any other solution like Sample and hold, external ADC etc. I hope you would direct me in the right...
Thank you all. Like you said, a few microsec delay won't have a significant effect on the phase.
I was thinking of starting from the sample design I attached and then go for other solutions like external ADC etc like you suggested.
I am using the differential amplifier to increase the input...
Since STM32MP157D requires positive analog input, I have added a fully differential amplifier to capture the negative inputs. STM32MP157D devices embed two analog-to-digital converters.
I have attached a diagram that explains my problem. I need to capture the 8 bipolar analog inputs...
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