The remote temperature measurement circuit composed of intelligent temperature sensor and external buffer

Published:2011/9/10 22:01:00 Author:Felicity | Keyword: remote temperature measurement circuit, intelligent temperature sensor, external buffer | From:SeekIC

During the remote temperature measurement, TMP03/04 has a big advantage over analog output temperature sensor. It’s becausethe output is digital signal which has a better performance of resisting disturbance. The proportion of T1/T2 cannot be affected between long distance transmission and an AD485 type RS-485 differential line drive can be added if necessary as shown in the circuit diagram. This circuit can transmit temperature signal over 1200m. The time delay caused by emitter and receiver in ADM485 is 5ns and won’t affect T1, T2.



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