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The cross talk (interference) between two ADC adjacent channels in STM32H753

RongShengWang
Associate III

‎2025-06-07 12:38 PM

Hi, 

    We use NUCLEO-H753ZI.

    Input signals to all ADCs are 60Hz/50Hz, the sampling clock is set as 5Mhz. The sample time is set to 12.clock cycles.

    We found the cross talk (interference) between two ADC adjacent channels in STM32H753 assigned to two ADCs and sampled simultaneously.

    Is it normal?

   If it is normal, the the number of useable ADC channels would be cut to a half.

   If it is not normal, how to make the corrections?

   Thank you for your help,

Rong

 

 

 

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ELABI.1
ST Employee

‎2025-06-09 6:46 AM - edited ‎2025-06-09 6:46 AM

Hi @RongShengWang,

Can you please give me more details about your project? For example, which ADCs are you using? Are you working with ADC1, ADC2, or ADC3? Which channels are being used? What operating mode are you using? ...

Thank you.

ELABI.1

 

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