QuickView

Technical Documents

Ordering Info

More Information

User Comments (0)

All

Status

Active: In Production.

Data Sheet

FULL DATA SHEET (PDF, 392kB) Download   E-Mail

Description

The DS1722 Digital Thermometer and Thermostat with SPI/3-Wire Interface provides temperature readings which indicate the temperature of the device. No additional components are required; the device is truly a temperature-to-digital converter. Temperature readings are communicated from the DS1722 over a Motorola SPI interface or a standard 3-wire serial interface. The choice of interface standard is selectable by the user. For applications that require greater temperature resolution, the user can adjust the readout resolution from 8 to 12 bits. This is particularly useful in applications where thermal runaway conditions must be detected quickly. For application flexibility, the DS1722 features a wide analog supply rail of 2.65V - 5.5V. A separate digital supply allows a range of 1.8V to 5.5V. The DS1722 is available in an 8-pin SO (150mil) and 8-pin µMAX package. Applications for the DS1722 include personal computers/servers/workstations, cellular telephones, office equipment, or any thermally-sensitive system.

Key Features		Applications/Uses
Temperature Measurements Require No External Components Measures Temperatures from -55°C to +120°C. Fahrenheit Equivalent is -67°F to +248°F Thermometer Accuracy is ±2.0°C Thermometer Resolution is Configurable from 8 to 12 bits (1.0°C to 0.0625°C Resolution) Data is Read From/Written to Via a Motorola Serial Peripheral Interface (SPI) or Standard 3-Wire Serial Interface Wide Analog Power Supply Range (2.65V - 5.5V) Separate Digital Supply Allows for 1.8V Logic Available in an 8-Pin SO (150mil) and 8-Pin µMAX package		Cell Phone Base Stations Computer Peripherals Networking Telecommunications Test Systems

Diagram

Functional Block Diagram

Application Notes

Application Note 3489: Installing the DS9123O USB Adapter on Windows® 98 - DS1722 Application Note 3930: Package Thermal Resistance Values (Theta JA, Theta JC) for Dallas Semiconductor Temperature Sensors - DS1722

Design Guides

Thermal Management (PDF)

Reliability Reports

Reliability Report: DS1722.pdf

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: 1-8 of 8

DS1722	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS1722S			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing: 21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8-2*	-55°C to +125°C	RoHS/Lead-Free: No Materials Analysis
DS1722S/T&R			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing: 21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8-2*	-55°C to +125°C	RoHS/Lead-Free: No Materials Analysis
DS1722S+T&R			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing: 21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8+2*	-55°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1722S+			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing: 21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8+2*	-55°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1722U			Active	µMAX;8 pin;16.2 mm² Outline Drawing: 21-0036 (PDF) Land Pattern: 90-0092 (PDF) Use pkgcode/variation: U8-1*	-55°C to +125°C	RoHS/Lead-Free: No Materials Analysis
DS1722U+T&R			Active	µMAX;8 pin;16.2 mm² Outline Drawing: 21-0036 (PDF) Land Pattern: 90-0092 (PDF) Use pkgcode/variation: U8+1*	-55°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1722U+			Active	µMAX;8 pin;16.2 mm² Outline Drawing: 21-0036 (PDF) Land Pattern: 90-0092 (PDF) Use pkgcode/variation: U8+1*	-55°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1722U/T&R			Active	µMAX;8 pin;16.2 mm² Outline Drawing: 21-0036 (PDF) Land Pattern: 90-0092 (PDF) Use pkgcode/variation: U8-1*	-55°C to +125°C	RoHS/Lead-Free: No Materials Analysis

More Information

New Product Press Release 2001-05-03  Temperature Family by Product Type

Related Products

More Like This: View Product Families for Similar Products See All Temperature Sensors (99 Products)

Didn't Find What You Need?

Next Day Product Selection Assistance from Applications Engineers Parametric Search Applications Help

QuickView

Technical Documents

Ordering Info

More Information

Description   Key Features   Applications/Uses   Key Specifications   Diagram

Data Sheet   Application Notes   Design Guides   Engineering Journals   Reliability Reports   Software/Models   Evaluation Kits

Price and Availability   Samples   Buy Online   Package Information   Lead-Free Information

Related Products   Notes and Comments   Evaluation Kits