STM CircleOS forum / Is it OK to connect directly the DAC output pin to the ADC input pin?

satishgn · 2009-09-22 18:33:23

I wanted to experiment with the stm32's ADC on Primer2 for which I am planning to use the onchip DAC as a signal generator. For this is it ok to connect directly the pins using a wire via the extension connector or do we require any current limiting resistor between the pins?

What I am trying to achieve is try out the stm32's DSP library to calculate the frequency of the signal then view & plot the data acquired by this way using a USB-HID application written in VC#.

Thanks,
Satish.

Last edited by satishgn (2009-09-22 18:35:31)

repzak · 2009-09-22 19:44:07

Hello,

Why not just put 470ohm or 1K in series, i believe it will give you any degration in performance, and if you do some stupid port settings it will not burn the port...

Kasper

# 1 2009-09-22 18:33:23 Is it OK to connect directly the DAC output pin to the ADC input pin?

Is it OK to connect directly the DAC output pin to the ADC input pin?

# 2 2009-09-22 19:44:07 Is it OK to connect directly the DAC output pin to the ADC input pin?

Re: Is it OK to connect directly the DAC output pin to the ADC input pin?

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