Addressable Digital Temperature Sensor Uses I2C Bus

Maxim Integrated Products’ DS75LX is a low-voltage digital temperature sensor that allows up to 27 addresses on one I²C communication bus. The sensor provides three dedicated address pins that can be placed in one of three states: ground, V_DD and floating. The DS75LX operates from a 1.7-V to 3.7-V supply voltage, and it can be connected directly to low-voltage supply rails.

The temperature sensor is factory calibrated to an accuracy of ±2.0°C over its entire supply-voltage range and a temperature range of -25°C to +100°C. Temperature is reported as user-selectable 9-, 10-, 11-, or 12-bit digital temperature readings that translate to resolutions between 0.5°C (9 bits) and 0.0625°C (12 bits). The DS75LX also has thermostat functionality with user-defined trip points that allow the user to customize the threshold temperature and output hysteresis. It is available in both 8-pin microSOP (microMAX) and 8-pin SO packages. Prices start at $0.75 for 1000 pieces.