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MP2, ADC and noise

tarzan2
Associate III

Hello,

I plan to use a MP2 on a SOM module (probably something like the KaRo QFN-like QSMP2 module).

This MP will run a linux on the A35 core and real-time software on the M33, + USB2, ETH 100 Mbps.

I need 11 ADC channels to convert analog signals at 500kSPS. There is enough ADC input to do that at the required sample rate but what about noise ?

The datasheet claims ~9.3bits of ENOB, this the enough BUT I suppose that obviously, this is in the best case.

Activating LPDDR4 + USB2 + ETH will generate a lot of board noise and will probably degrade the ADC ENOB. But how much ?

Does anyone experienced some noise measurement on MP1/MP2 device with DDR and hi-speed IF activated ?

Thanks for the feedback !

1 REPLY 1
Maxime_MARCHETTO
Community manager
Community manager

Hello @tarzan2,

This post has been escalated to the ST Online Support Team for additional assistance.  We'll contact you directly.

Best regards,
Maxime


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