4-20mA to STM32 ADC

[ray]

Posted on October 25, 2013 at 15:35

How to input 4-20mA singnal to ADC in STM32? You know, ADC voltage is [0, 3.3V]. What circuit should add on the input?

#4to20ma

[pmoore]

Posted on October 31, 2013 at 21:18

You may have to adjust if for your needs...but this circuit works for both 4to20mA or 0to10V in to the ADC and out from the DAC.

________________ Attachments : STM32F_4to20mA.pdf : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006I1I4&d=%2Fa%2F0X0000000blw%2FS8zsSQWp3W5yj9gMTpUMXIZOshfPUl6.q4SBl9pRlAY&asPdf=false