Analog Devices DS1631 Product Info

• 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

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 ≤ V_DD ≤ 5.5V, and the DS1731 accuracy is ±1°C from -10°C to +85°C with 3.0V ≤ V_DD ≤ 5.5V. The thermostat on all three devices provides custom hysteresis with user-defined trip points (T_H and T_L). The T_H and T_L 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.

Applications

• Medical
• Networking
• Personal Computing
• Routers/Switches
• Test Measurement Systems
• Wireless Base Stations