• 简体中文
• English

DS1722：Digital Thermometer with SPI/3-Wire Interface

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 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

DS1722: Functional Block Diagram Applications/Uses Cell Phone Base Stations Computer Peripherals Networking Telecommunications Test Systems

DataSheet

Parametrics

Quality and Environmental Data

• DS1722.pdf

Ordering Information