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Data Sheet

FULL DATA SHEET (PDF, 204kB) Download   E-Mail

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. Communication with the DS1631/DS1631A/DS1731 is achieved through a 2-wire serial interface, and three address pins allow up to eight devices to be multidropped on the same 2-wire bus.

Key Features		Applications/Uses
DS1631 and DS1631A Provide ±0.5°C Accuracy over a 0°C to +70°C Range DS1731 Provides ±1°C Accuracy over a -10°C to +85°C Range DS1631A Automatically Begins Taking Temperature Measurements at Power-Up Operating Temperature Range: -55°C to +125°C (-67°F to +257°F) Temperature Measurements Require No External Components Output Resolution is User-Selectable to 9, 10, 11, or 12 Bits Wide Power-Supply Range (+2.7V to +5.5V) Converts Temperature-to-Digital Word in 750ms (max) Multidrop Capability Simplifies Distributed Temperature-Sensing Applications Thermostatic Settings are User-Definable and Nonvolatile (NV) Data is Read/Written Through 2-Wire Serial Interface (SDA and SCL Pins) All Three Devices are Available in 8-Pin µSOP Packages and the DS1631 is Also Available in a 150mil SO package		Medical Networking Personal Computing Routers/Switches Test Measurement Systems Wireless Base Stations

Application Notes

Application Note 135: Interfacing to the DS1631 Digital Thermometer and Thermostat in a Microcontroller Environment - DS1631 Application Note 176: Using the DS1631 Temperature Sensor in DS1621 Applications - DS1631 Application Note 208: Curve Fitting the Error of a Bandgap-Based Digital Temperature Sensor - DS1631 Application Note 3489: Installing the DS9123O USB Adapter on Windows® 98 - DS1631, DS1631A, DS1731 Application Note 3930: Package Thermal Resistance Values (Theta JA, Theta JC) for Dallas Semiconductor Temperature Sensors - DS1631, DS1631A, DS1731

Evaluation Kits

none

Design Guides

TEMP SENSORS (PDF)

Reliability Reports

Reliability Report: DS1631.pdf DS1731.pdf Request Reliability Report for: DS1631A

Software/Models

none

Ordering Information
Notes: Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day. Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
Devices: 1-21 of 21
DS1631	Free Sample	Buy	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS1631			PDIP;8 pin;80 mm² Dwg: 56-G5005-000A (PDF) Use pkgcode/variation: P8-7*	-55°C to +125°C	RoHS/Lead-Free: No Materials Analysis
DS1631+			PDIP;8 pin;80 mm² Dwg: 56-G5005-000A (PDF) Use pkgcode/variation: P8+7*	-55°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1631Z+			SOIC;8 pin;31 mm² Dwg: 56-G2008-001C (PDF) Use pkgcode/variation: S8+2*	-55°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1631S+T&R			SOIC;8 pin;44 mm² Dwg: 56-G4010-001B (PDF) Use pkgcode/variation: W8+1*	-55°C to +125°C	See data sheet
DS1631S/T&R			SOIC;8 pin;44 mm² Dwg: 56-G4010-001B (PDF) Use pkgcode/variation: W8-1*	-55°C to +125°C	RoHS/Lead-Free: No Materials Analysis
DS1631S+			SOIC;8 pin;44 mm² Dwg: 56-G4010-001B (PDF) Use pkgcode/variation: W8+1*	-55°C to +125°C	See data sheet
DS1631S			SOIC;8 pin;44 mm² Dwg: 56-G4010-001B (PDF) Use pkgcode/variation: W8-1*	-55°C to +125°C	RoHS/Lead-Free: No Materials Analysis
DS1631Z+T&R			SOIC;8 pin;31 mm² Dwg: 56-G2008-001C (PDF) Use pkgcode/variation: S8+2*	-55°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1631Z/T&R			SOIC;8 pin;31 mm² Dwg: 56-G2008-001C (PDF) Use pkgcode/variation: S8-2*	-55°C to +125°C	RoHS/Lead-Free: No Materials Analysis
DS1631Z			SOIC;8 pin;31 mm² Dwg: 56-G2008-001C (PDF) Use pkgcode/variation: S8-2*	-55°C to +125°C	RoHS/Lead-Free: No Materials Analysis
DS1631U+			uSOP;8 pin;16 mm² Dwg: 21-0036J (PDF) Use pkgcode/variation: U8+1*	-55°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1631U			uSOP;8 pin;16 mm² Dwg: 21-0036J (PDF) Use pkgcode/variation: U8-1*	-55°C to +125°C	RoHS/Lead-Free: No Materials Analysis
DS1631U/T&R			uSOP;8 pin;16 mm² Dwg: 21-0036J (PDF) Use pkgcode/variation: U8-1*	-55°C to +125°C	RoHS/Lead-Free: No Materials Analysis
DS1631U+T&R			uSOP;8 pin;16 mm² Dwg: 21-0036J (PDF) Use pkgcode/variation: U8+1*	-55°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1631A	Free Sample	Buy	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS1631AU/T&R			uSOP;8 pin;16 mm² Dwg: 21-0036J (PDF) Use pkgcode/variation: U8-1*	-55°C to +125°C	RoHS/Lead-Free: No Materials Analysis
DS1631AU+			uSOP;8 pin;16 mm² Dwg: 21-0036J (PDF) Use pkgcode/variation: U8+1*	-55°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1631AU			uSOP;8 pin;16 mm² Dwg: 21-0036J (PDF) Use pkgcode/variation: U8-1*	-55°C to +125°C	RoHS/Lead-Free: No Materials Analysis
DS1631AU+T&R			uSOP;8 pin;16 mm² Dwg: 21-0036J (PDF) Use pkgcode/variation: U8+1*	-55°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1731	Free Sample	Buy	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS1731U+			uSOP;8 pin;16 mm² Dwg: 21-0036J (PDF) Use pkgcode/variation: U8+1*	-55°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1731U/T&R			uSOP;8 pin;16 mm² Dwg: 21-0036J (PDF) Use pkgcode/variation: U8-1*	-55°C to +125°C	RoHS/Lead-Free: No Materials Analysis
DS1731U			uSOP;8 pin;16 mm² Dwg: 21-0036J (PDF) Use pkgcode/variation: U8-1*	-55°C to +125°C	RoHS/Lead-Free: No Materials Analysis

More Information

New Product Press Release 2002-02-04  Temperature Family by Product Type

Related Products

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