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DS1631A

Part Number	DS1631A
Manufacturer	Maxim
Description	High-Precision Digital Thermometer/Thermostat
Published	May 4, 2015
Detailed Description	DS1631/DS1631A/ DS1731 High-Precision Digital Thermometer and Thermostat General Description The DS1631, DS1631A, and ...
Datasheet	DS1631A PDF File

Overview

DS1631/DS1631A/ DS1731 High-Precision Digital Thermometer and Thermostat General Description 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.
Pin descriptions for the DS1631/DS1631A/DS1731 are provided in Table 2 and user-accessible registers are summarized in Table 3.
A functional diagram is shown in Figure 1.
Applications ●● Network Routers and Switches ●● Cellular Base Stations ●● Portable Products ●● Any Space-Constrained Thermally Sensitive Product Benefits and 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 Pin Configurations TOP VIEW SDA 1 SCL 2 TOUT 3 GND 4 + DS1631 8 VDD 7 A0 6 A1 5 A2 µSOP (DS1631U+, DS1631AU+, DS1731U+) SDA 1 + 8 VDD SCL 2 DS1631 7 A0 TOUT 3 6 A1 GND 4 5 A2 ...

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