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STM32H743 ADC single-end and differential input configuration

lsong.1
Associate II

Hi,I use ADC1_INP2 for single-end mode , how the ADC1_INN2 connect to?Internal VREF- or outside GND? And in differential mode,ADC1_INP6/ADC1_INN2 use de same pin, is that i can only use ADC1 channel 2 in differential mode? ADC1 channel 6 can't be used.

1 ACCEPTED SOLUTION

Accepted Solutions
TDK
Guru

> I use ADC1_INP2 for single-end mode , how the ADC1_INN2 connect to

ADC1_INN2 is not used in single-ended mode. You can use it for something else, or leave it floating, or whatever.

> And in differential mode,ADC1_INP6/ADC1_INN2 use de same pin, is that i can only use ADC1 channel 2 in differential mode?

Correct.

If you feel a post has answered your question, please click "Accept as Solution".

View solution in original post

1 REPLY 1
TDK
Guru

> I use ADC1_INP2 for single-end mode , how the ADC1_INN2 connect to

ADC1_INN2 is not used in single-ended mode. You can use it for something else, or leave it floating, or whatever.

> And in differential mode,ADC1_INP6/ADC1_INN2 use de same pin, is that i can only use ADC1 channel 2 in differential mode?

Correct.

If you feel a post has answered your question, please click "Accept as Solution".