High reliable programmable integrated temperature controller TMP01 circuit diagram

Published:2011/5/10 22:12:00 Author:Nicole | Keyword: temperature controller | From:SeekIC

The temperature singal which is exported form TMP01 5-foot is a analog voltage, it will introduce outside interference easily when in industrial site. So it can adopt twisted-pair transmission singal, the circuit is as shown. Firstly, it uses a OP297 to divided U0 into two parts singals, then the singal is transported by twisted-pair, at last, it uses a AMP03 to receive and restore singal in the terminal. Besides amplifying the temperature singal, the differential amplifier which is composed of AMP03 also can reduce the twisted-pair's noise voltage 95dB, after it is restored, it can obtain undistorted signal voltage U0.



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