AnsweredAssumed Answered

Separate analog & digital supply MCU

Question asked by takniki.vindhyachal on Jan 23, 2015
Latest reply on Jan 23, 2015 by Clive One
1. I am using STM32 - 32 bit cortex M3, it has separate analog & digital supply pins.
2. Datasheet says :

VDDA and VSSA must be connected to VDD and VSS, respectively.


3. Since I have 12 analog channels connected , so avoid any digital noise to come in analog signal can I connect a inductor = 10uH & cap = 0.1uF (as filter) between AVDD & DVDD.

4. Can I do so?

Edit: Or can I connect a separate 3.3V regulator for both VDD & AVDD with common ground.
But this I think won't work as datasheet saya they must be connected together

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