Temperature sensor in a SOT package

Analog Devices has expanded its portfolio of temperature sensors with the addition of the ADT7301, claiming that it is the most accurate SPI-compatible temperature sensor available in a tiny SOT (small outline transistor) package.

The ADT7301 13-bit temperature-to-digital converter provides +/- 0.5 degrees C measurement accuracy from 0 to 70 degrees C, and is fully specified for operation from -40 to +150 degrees C.

In addition to its small footprint, the device’s low shutdown current (1 microamp) and wide supply range (2.7 V to 5.5 V) make it suitable for many low-power applications requiring precise thermal measurement.

The ADT7301 contains a flexible serial interface, which allows it to be interfaced to most microcontrollers. The part is compatible with SPI, QSPI, and MICROWIRE protocols, as well as DPSs (digital signal processors). The ADT7301 also offers a standby mode for additional power savings.

The features of the ADT7301 suit it to many space constrained applications, including medical equipment, automotive, cell phones, hard disk drives, electronic test equipment, thermostat controls, portable battery management and process control.

In addition to the SOT 23 package, the ADT7301 is available in a 8-lead MSOP (micro small outline package). It is sampling now with full production expected in October 2004. The device is priced at $1.20 per unit in 1,000-piece quantities.

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