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Front-End Amplifier for multiple SAR ADC?

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carpenter

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MCU as STM32F303 allows you to connect two ADC in dual mode. Two 12bit 5MSMPS work as a ONE 10Msps ADC.ST Unfortunately, no one does, how to solve Front-End Amplifier for ADC in dula mode.
Use one amp for both ADC or two for each ADC own amplifier?
 

One amplifier is likely better, otherwise any gain/offset mismatch between the multiple amplifiers will cause artifacts in the sampled data. You should spec the amp as if you were really driving a single ADC operating at 10msps.
 

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