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MKM14 Microcontrooler used using sigma Delta ADC in singe ended mode

Question asked by harish gode on Aug 13, 2019
Latest reply on Aug 15, 2019 by soledad

I am using MKM14 series microcontroller for 4-20 mA Application. I am using Sigma Delta ADC in single ended mode for 20 mA to be as 350 mV DC signal to ADC through a 24 V Battery with 1.2K ohm resistor in series for 20 mA. If i reverse the polarity of 24V Battery then ADC reads - 350 mV DC ( reading 15 A instead of 20 mA). Is it ok or i need to take some precaution.

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