描述 Description

TCN75 is a serially programmable temperature sensor that notifies the host controller when ambient temperature exceeds a user-programmed setpoint. Hysteresis is also programmable. The INT/CMPTR output is programmable as either a simple comparator for thermostat operation or as a temperature event interrupt. Communication with the TCN75 is accomplished via a two-wire bus that is compatible with industry standard protocols. This permits reading the current temperature, programming the setpoint and hysteresis and configuring the device. The TCN75 powers up in Comparator mode with a default setpoint of 80°C with 5°C hysteresis. Defaults allow independent operation as a stand-alone thermostat. A shut-down command may be sent via the 2-wire bus to activate the low-power standby mode. Address selection inputs allow up to eight TCN75's to share the same 2-wire bus for multi-zone monitoring. All registers can be read by the host and the INT/CMPTR output's polarity is user programmable. Both polled and interrupt driven systems are easily accommodated. Small physical size, low installed cost and ease of use make the TCN75 an ideal choice for implementing sophisticated system management schemes.

特性 Features

? Solid State Temperature Sensing; 0.5°C Accuracy (Typ.)
? Operates from -55°C to +125°C
? Voltage Operating Range: 2.7V to 5.5V
? Programmable Trip Point and Hysteresis with Power-up Defaults
? Standard 2-Wire Serial Interface
? Thermal Event Alarm Output Functions as Interrupt or Comparator/Thermostat Output
? Up to 8 TCN75's may share the same bus
? Shutdown Mode for Low Standby Power Consumption
? 5V Tolerant I/O at VDD = 3V
? Low Power: 250 μA (Typ.) Operating, 1 μA (Typ.) Shutdown Mode

簡(jiǎn)介

TCN75屬于傳感器變送器的溫度傳感器-模擬數(shù)字輸出。由制造生產(chǎn)的TCN75溫度傳感器 - 模擬和數(shù)字輸出模擬和數(shù)字輸出溫度傳感器可用于測(cè)量環(huán)境熱能量。特征包括傳感器類型、本地感測(cè)溫度、遠(yuǎn)程感測(cè)溫度、輸出類型、電源電壓和分辨率。傳感器類型為模擬本地/遠(yuǎn)程/紅外、模擬數(shù)字、本地/遠(yuǎn)程、數(shù)字本地/遠(yuǎn)程/紅外或內(nèi)部，感應(yīng)溫度范圍為 -55°C 至 200°C。