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CMONC.1
CMONC.1
Associate
March 30, 2021
Question

What is Radc of STM32L431 at 3.3V (value is missing in datasheet)

  • March 30, 2021
  • 2 replies
  • 1683 views

Hello,

I would like to optimise my conversions to have a minimum phase shift between them. I have taken the application note AN2834 but I miss Radc. There is Cadc and Rain max but this data is not in the STM32L431 datasheet.

Thank you in advance.

This topic has been closed for replies.

2 replies

Imen GH
Imen GH
ST Employee
March 30, 2021

Hello @CMONC.1​ ,

For STM32L4 products, we don't give the value of the resistance Radc.

What you do mean about “a minimum phase shift between them“?

Imen

CMONC.1
CMONC.1Author
Associate
March 31, 2021

Hello,

I have several analogue inputs with different filters and I want to optimise my conversion time to limit the phase shift between my signals. I have calculations and the delay between the signals is important in this calculation. So I have to play with my filtering RC and the ADC RC.

If you can't give the value of Radc, we can't follow the constraints of the AN2834!

Thank you for your involvement.

Christophe

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