1A Load Peak Detector

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03:08:07

ACS71240 for current mesuarments [AC]
Im using a ACS71240LLCBTR-010B3
1 A equals 132mV + offset half the supply, i convert this value to a peak of 330mV for MCU ADC [3.3V max]
For safety purpose i suggest to lower the conversation to ~300mV/A to work withing the linearity of the adc.
In this config the ADC is just using half of the bits ~ but on a 10bit ADC there is a 20mA/ADC Step Resolution - enough for me

published 4 years ago

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