DS1631
PRODUCTIONHigh-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
- Part Models
- 9
- 1ku List Price
- Starting From $2.84
Overview
- 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 ≤ 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
Documentation
Data Sheet 1
Application Note 1
Technical Articles 5
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 Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| DS1631+ | Plastic Dual-In-Line, Narrow (0.3in) | ||
| DS1631AU+ | Micro-MAX, Thin Shrink Small-Outline | ||
| DS1631AU+T&R | Micro-MAX, Thin Shrink Small-Outline | ||
| DS1631S+ | Small-Outline IC (0.208in) | ||
| DS1631S+T&R | Small-Outline IC (0.208in) | ||
| DS1631U+ | Micro-MAX, Thin Shrink Small-Outline | ||
| DS1631U+T&R | Micro-MAX, Thin Shrink Small-Outline | ||
| DS1631Z+ | Small-Outline IC, Narrow (0.15in) | ||
| DS1631Z+T&R | Small-Outline IC, Narrow (0.15in) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Feb 26, 2025 - 2464 PIN/ERRATA |
||
| DS1631S+ | PRODUCTION | |
| DS1631S+T&R | PRODUCTION | |
|
Jan 28, 2019 - 1753B ASSEMBLY |
||
| DS1631U+ | PRODUCTION | |
| DS1631U+T&R | PRODUCTION | |
|
Oct 30, 2020 - 1702R2 ASSEMBLY |
||
| DS1631Z+ | PRODUCTION | |
| DS1631Z+T&R | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Analog to Digital Converters (ADCs) 1 | ||
| DS1721 | PRODUCTION | Digital Thermometer and Thermostat |
Tools & Simulations
Software Development 1
IBIS Model 1
Evaluation Kits
Evaluation Kit for the DS1631
Evaluation Kit for the DS1631
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