The circuit diagram of highly accurate current output integrated temperature sensor AD592 matching A／D converter

Published:2011/5/16 20:49:00 Author:Nicole | Keyword: current output, integrated temperature sensor, A／D converter | From:SeekIC

In microcontroller temperature measuring system, firstly, AD592 outputed analog is changed into digital by A／D converter, then it is sent to single chip and data processed. The AD592 matching A／D converter circuit is shown in the figure. It adopts a AD670 to transfer 8-bit A/D. AD670 is 4 terminal differential input, it contains input attenuator, instrumentation amplifier and 8-bit A/D converter of reference voltage source. The current signal exported by AD592 is transformed into voltage signal by R1 and R2, the voltage temperature coefficient is 1mV／℃.



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