DS1631
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
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Overview
Features and Benefits
- 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
Product Details
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.
Applications
- Medical
- Networking
- Personal Computing
- Routers/Switches
- Test Measurement Systems
- Wireless Base Stations
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (2)
Documentation & Resources
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Understanding Multidrop Address Assignments for Thermal Sensors3/28/2014
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Thermal Management Handbook5/4/2010
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Package Thermal Resistance Values (Theta JA, Theta JC) for Temperature Sensors and 1-Wire Devices11/16/2006
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Curve Fitting the Error of a Bandgap-Based Digital Temperature Sensor6/20/2002
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Temperature Sensor IC: DS16312/22/2002
Product Recommendations
DS1631 Companion Parts
Recommended Related Parts
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| DS1631+ | Material Declaration | Reliability Data | Plastic Dual-In-Line, Narrow (0.3in) | |
| DS1631AU+ | Material Declaration | Reliability Data | Micro-MAX, Thin Shrink Small-Outline | |
| DS1631AU+T&R | Material Declaration | Reliability Data | Micro-MAX, Thin Shrink Small-Outline | |
| DS1631S+ | Material Declaration | Reliability Data | Small-Outline IC (0.208in) | |
| DS1631S+T&R | Material Declaration | Reliability Data | Small-Outline IC (0.208in) | |
| DS1631U+ | Material Declaration | Reliability Data | Micro-MAX, Thin Shrink Small-Outline | |
| DS1631U+T&R | Material Declaration | Reliability Data | Micro-MAX, Thin Shrink Small-Outline | |
| DS1631Z+ | Material Declaration | Reliability Data | Small-Outline IC, Narrow (0.15in) | |
| DS1631Z+T&R | Material Declaration | Reliability Data | Small-Outline IC, Narrow (0.15in) | |
| Wafer Fabrication Data |
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DS1631 Discussions
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Buy Now Pricing
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List Pricing
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Evaluation Boards
Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.