[ADC] VddA is smaller than the Vref can result in inaccurate a/d conversion?

[Tiel]

hello,

I have question about adc on stm32.

If Vref is connected to Vdd, VddA is slightly smaller than Vdd, ADC might be inaccurate?

I just became to konw that our hw-engineer did mistook on connections on stm32.

( I found that 1.he connected vdd and vref. 2.vdda was connected to vdd through bead. so vdda might be slightly smaller than vdd.)

as I know, vdda>=Vref, but currently vdda <= Vref, so I am afraid if there is no problem on adc.

Thanks in advace for your advice.

Best Regards,

Tiel

[waclawek.jan]

Which STM32?

What does the Datasheet say?

JW