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.

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 SOIC (150 mil), 8-pin uSOP, and flip chip package