MODCHIP
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hello every one
i m trying to understand a small circuit for interfacing 4-20ma to a pic
i think after this circuit i must calculate the adc inverse that means for 4ma i wil have around 4.44v
and for 20ma i will have around 0.88v is that true
and is the amplifier here work as a comparator or not
and how to calculate the 100R resistance
thank you for help
i m trying to understand a small circuit for interfacing 4-20ma to a pic
i think after this circuit i must calculate the adc inverse that means for 4ma i wil have around 4.44v
and for 20ma i will have around 0.88v is that true
and is the amplifier here work as a comparator or not
and how to calculate the 100R resistance
thank you for help