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Dallas temperature-sensor IC operates in 1.7V to 3.5V range

Posted: 02 Aug 2004 ?? ?Print Version ?Bookmark and Share

Keywords:dallas semiconductor? ds620? temperature-sensor ic?

The DS620 from Dallas Semiconductor Corp. is touted as the industry's first digital temperature-sensor IC to operate from a low supply-voltage range of 1.7V to 3.5V.

Suitable for low-power and battery-operated systems, plus any thermally sensitive system that uses low supply-voltage rails, the IC is factory calibrated to an accuracy of 0.5C (max) over its entire supply-voltage range and its temperature range of 0C to 70C, and is 2C (max) accurate over the -55C to 125C operating temperature range.

The DS620 thermometer provides 10-, 11-, 12- or 13-bit digital temperature readings that translate to resolutions between 0.5C (10-bit) and 0.0625C (13-bit). Thermostat functionality with nonvolatile (EEPROM), user-defined trip points allows the user to customize the threshold temperature and output hysteresis. The product can be configured to measure temperature at power up, thus enabling its thermostat functionality to operate in a stand-alone mode without user or processor intervention. When not in use, the thermostat output can act as a general-purpose programmable output. Communication with the DS620 is achieved through a standard 2-wire serial interface.

The DS620 is available in an 8-pin microSOP package. Prices start at $1.66 (1,000-up, FOB USA).

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