4 mA-to-20 mA Loop-Powered Temp Monitor

Using ADI’s ADuC7060/ADuC7061 Precision Analog Microcontroller (CN0145)

Norwood MA, USA — This online and downloadable Applications Note from Analog Devices provides the step-by-step instructions on how to readily build a not-so-simple solid state temperature monitor from modest cost, readily available commercial components. (Image: Courtesy Analog Devices, Inc.)

Its introduction begins:

This circuit provides a simple highly integrated temperature monitor solution that can interface to a 4 mA-to-20 mA host controller. This circuit provides a very low cost solution to temperature monitoring because so much of the circuit functionality is integrated on the ADuC7060/ ADuC7061 precision analog microcontroller, including dual 24-bit ?-? ADCs, the ARM7 processor core, and the DAC/PWM features for controlling the 4 mA-to-20 mA feedback circuit.

Details online at: www.analog.com/en/verifiedcircuits/CN0145/vc.html

or download them in pdf format at: www.analog.com/static/imported-files/circuit_notes/CN0145.pdf

There is a whole world of producer-supplied applications details at Analog Devices’ website (and those of their competitors) ready to help designers from top professional ones to the rank amateurs benefit from their in-house expertise.