Analog Devices Inc. (ADI, Wilmington, MA) has expanded its portfolio of temperature sensors with the addition of the SPI-compatible, 13-bit, temperature-to-digital, ADT7301 temperature sensor, available in a tiny small outline transistor (SOT) package. The ADT7301 is suitable for many space-constrained applications, including medical equipment, automotive, cell phones, hard disk drives, electronic test equipment, thermostat controls, portable battery management and process control.
The ADT7301 converter provides ±0.5°C measurement accuracy from 0°C to 70°C, and is fully specified for operation from -40°C to +150°C. In addition to its small footprint, the device's low shutdown current of 1µA and wide supply range of 2.7V to 5.5V make it suitable for many low-power applications requiring precise thermal measurement. The ADT7301 contains a flexible serial interface, which allows easy interfacing to most microcontrollers. The part is compatible with SPI™, QSPI and MICROWIRE™ protocols, as well as digital signal processors. The ADT7301 also offers a standby mode for additional power savings.
In addition to the SOT 23 package, the ADT7301 is available in an eight-lead, micro small outline package (MSOP). It is sampling now with full production expected in 2004. The device is priced at $1.20 per unit in 1,000-piece quantities.
