4-20ma op amp circuit

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4-20ma op amp circuit [Copy link]

Is there a simple and stable 4-20ma op amp conversion circuit, AD DA?

maychang

There is an operational amplifier circuit that converts voltage (usually 1~5V, or 0~10V) into 4~20mA, but it does not include AD (analog-to-digital conversion) or DA (digital-to-analog conversion).

蓝雨夜

TI’s AFE881H1

Gen_X

There are direct DA with current loop and even bias and modulation functions. Very useful.

chunyang

TI and ADI both have dedicated chips, go to their official websites to check.

led2015

The input of the op amp is connected to the output of the AD DA, while the output of the op amp is connected to the 4-20mA loop.

BYM941230

xtr111