ADC Usage in RAK3172

LPWAN Modules / EVBs RAK3172
1

Hello everyone,
I saw a hadc defined in RAK3172. Can I use 2 different ADC channels, that is, can I get readings by connecting two different sensors to ADC1 and ADC4 at the same time?

2

Hi @kara

RAK3172 ADC has only one sample-and-hold circuit for its ADC. If you have high speed requirements of ADC sampling (maybe for controls application), then it will not be suitable.

However, if you can allow few milliseconds/seconds interval between two readings, you can switch fast the ADC channels between ADC1 and ADC4 and if not critical to the application, it will still look captured at the same time.

1 Like
3

Hi @carlrowan,
Thank you for your return.

4

This topic was automatically closed 10 days after the last reply. New replies are no longer allowed.