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DS1721：数字温度计和温度监控器

The DS1721 digital thermometer and thermostat features ±1°C accuracy over a -10°C to +85°C range. Thermometer data is read out over a 2-wire serial bus in 2's complement format with 9 to 12 bits of resolution (user-programmable). The DS1721 features three address inputs, allowing users to multidrop up to eight DS1721 devices on one bus. The DS1721 offers thermostatic functionality with over-temperature (TH) and under-temperature (TL) user-programmable trip-points stored in on-chip SRAM. The two trip-points provide programmable thermostat hysteresis: the thermostat output is asserted when the measured temperature exceeds TH and it remains active until the temperature falls below TL. The DS1721 is available in 150mil 8-pin SO (DS1721S) and 8-pin µMAX/µSOP (DS1721U) packages. For applications requiring higher precision, the DS1631 provides ±0.5°C accuracy and is functionally compatible with the DS1721.

关键特性 ±1°C accuracy from -10°C to +85°C Measures temperatures from -55°C to +125°C (-67°F to +257°F) 9- to 12-bit user-configurable resolution Dedicated thermostatic logic output Thermostatic settings are user-programmable Data is transferred over 2-wire/SMBus interface Three address inputs allow up to eight DS1721 to operate on one bus 2.7V to 5.5V supply range 150mil 8-pin SO (DS1721S) and 8-pin µMAX/µSOP (DS1721U) packages

DS1721：功能原理框图 应用 报警系统 光纤通道 仪表 网络

数据手册DataSheet

关键参数

技术资料

• Understanding Multidrop Address Assignments for Thermal Sensors
• Package Thermal Resistance Values (Theta JA, Theta JC) for Temperature Sensors and 1-Wire Devices
• Reverse Compatibility of the DS1721 Digital Temperature Sensor with the DS1621

质量和环境数据

• DS1721.pdf

相关产品

• DS1631：高精度数字温度计和温度监控器

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