ADC noise and source impedance

john1389 · ‎2016-07-22

Posted on July 23, 2016 at 02:50

Does STM32F103RB use switched capacitor ADC circuit which produces some noise in the process and requiring source impedance to be 'not too high' or else accuracy will degrade?

The signal is single channel and no MUX switching.

#adc-noise-tuning

raptorhal2 · ‎2016-07-24

Posted on July 24, 2016 at 23:44

Yes, but there is a relationship between source impedance and sampling cycles for a given level of accuracy. See ST's available literature on ADC accuracy.

Many of your questions you can answer yourself by reading the available literature for your device. I'll leave it as your exercise to find it.

Cheers, Hal