±2.0 degrees Celsius Accurate Digital Temperature Sensor Operates Using a 1.7V to 3.7V Supply Range
DALLAS, TX-May 19, 2006-Dallas Semiconductor (NASDAQ: MXIM) introduces the DS75LV, the Company's latest digital temperature-sensor that operates from a low 1.7V to 3.7V supply-voltage range. The DS75LV is ideal for low-power and battery-operated systems, and any other system that uses low supply-voltage rails. The DS75LV is factory calibrated to an accuracy of ±2.0°C (max) over its entire voltage-supply range and a wide -25°C to +100°C temperature range. It is ±3.0°C (max) accurate over its full -55°C to +125°C operating-temperature range. The device is function, pin, and software compatible with the popular DS75, which makes it is easy to migrate to low-voltage designs using the DS75LV.
The DS75LV thermometer provides user-selectable 9-/10-/11-/12-bit digital temperature readings that translate to resolutions between 0.5°C (9-bit) and 0.0625°C (12-bit). A thermostat functionality with user-defined trip points allows the user to customize the threshold temperature and output hysteresis. The DS75LV's thermostat can be configured to operate in either comparator or interrupt mode. In comparator mode, the thermostat output becomes active when the measured temperature exceeds the threshold value; the thermostat remains active until the temperature falls below the value stored in the hysteresis register. In interrupt mode, the thermostat output first becomes active when the measured temperature exceeds the threshold value; the thermostat can only be cleared either by putting the DS75LV into shutdown mode or by reading from any register (temperature, configuration, TOS, or THYST) on the device.
For power-sensitive applications, the DS75LV offers a low-power shutdown mode that reduces current draw to less than 2µA. Communication with the DS75LV is achieved through a standard two-wire (I2C*) serial interface. If the device's bus-timeout function is held longer than a predetermined amount of time, it releases the data line. This prevents any possible lockup problems that could occur on the two-wire bus. The device is available in an 8-pin SO or µSOP (µMAX®) lead-free package.
Typical applications for the DS75LV include portable temperature loggers, portable medical equipment, networking equipment, servers and computers, test equipment, and any low-voltage, thermally sensitive system. Prices start at $0.90 (1000-up, FOB USA).
*Purchase of I2C components from Maxim Integrated Products, Inc., or one of its sublicensed Associate Companies, conveys a license under the Philips I2C Patent Rights to use these components in an I2C system, provided that the system conforms to the I2C Standard Specification defined by Philips.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
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