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STM32 DFSDM - simultaneous sampling of multiple channels

Question asked by gaspar.laszlo on Sep 25, 2017
Latest reply on Sep 25, 2017 by gaspar.laszlo

I am a bit confused about the capabilities of the STM32 DFSDM module. The documentation says (section 17.3.77) that the channels selected for are converted one after another, but is it possible to sample multiple channels simultaneously?

 

To approach the question from a slightly different angle, with STM32 devices that have dual or triple ADC it is possible to sample two or three analogue signals simultaneously by running the two (or three) ADCs together. So it is possible to sample two or three analogue signals without any phase difference, at exactly the same time. Does the DFSDM module have this capability?

 

I need to sample up to 4 external delta-sigma modulators at exactly the same time, without any phase difference. The data sheet is not clear whether this is supported.

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