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DS1731：High-Precision Digital Thermometer and Thermostat

High-Precision Digital Thermometers and Thermostats Provide 9, 10, 11, or 12-Bit Temperature Readings Over a -55°C to +125°C Range

The DS1631, DS1631A, and DS1731 digital thermometers provide 9, 10, 11, or 12-bit temperature readings over a -55°C to +125°C range. The DS1631 and DS1631A thermometer accuracy is ±0.5°C from 0°C to +70°C with 3.0V ≤ VDD ≤ 5.5V, and the DS1731 accuracy is ±1°C from -10°C to +85°C with 3.0V ≤ VDD ≤ 5.5V. The thermostat on all three devices provides custom hysteresis with user-defined trip points (TH and TL). The TH and TL registers and thermometer configuration settings are stored in NV EEPROM so they can be programmed prior to installation. In addition, the DS1631A automatically begins taking temperature measurements at power-up, which allows it to function as a stand-alone thermostat.

Key Features Maximize System Accuracy in Broad Range of Thermal Management Applications Operating Temperature Range: -55°C to +125°C (-67°F to +257°F) DS1631 and DS1631A: ±0.5°C Accuracy over 0°C to +70°C Range DS1731: ±1°C Accuracy over a -10°C to +85°C Range User-Selectable Output Resolution from 9 Bits to 12 Bits Reduce Cost with No External Components Simplify Distributed Temperature-Sensing Applications with Multidrop Capability Up to Eight Devices Can Operate on a 2-Wire Bus Flexible and Nonvolatile User-Defined Thermostatic Modes with Custom Hysteresis Available in 8-Pin µSOP and SO (DS1631 and DS1631A Only) and the 8-Pin DIP (DS1631 Only) Packages

DS1631, DS1631A, DS1731: Functional Diagram Applications/Uses Medical Networking Personal Computing Routers/Switches Test Measurement Systems Wireless Base Stations

DataSheet

Parametrics

Quality and Environmental Data

• DS1731.pdf

Related Products

• DS1721：Digital Thermometer and Thermostat

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