Description:

Microchip Technology Inc.’s TCN75A digital temperature sensor converts temperatures between -40°C and +125°C to a digital word, with ±1°C (typ.) accuracy.

The TCN75A product comes with user-programmable registers that provide flexibility for temperature-sensing applications. The register settings allow user-selectable, 0.5°C to 0.0625°C temperature measurement resolution, configuration of the power-saving Shutdown and One-shot (single conversion on command while in Shutdown) modes and the specification of both temperature alert output and hysteresis limits. When the temperature changes beyond the specified limits, the TCN75A outputs an alert signal. The user has the option of setting the alert output signal polarity as an active-low or active-high comparator output for thermo stat operation, or as temperature event interrupt output for microprocessor-based systems.

Features:

• Temperature-to-Digital Converter

• Accuracy:

- ±1 (typ.) from -40°C to +125°C

- ±2°C (max.) from +40°C to +125°C

• User-selectable Resolution: 0.5°C to 0.0625°C

• Operating Voltage Range: 2.7V to 5.5V

• 2-wire Interface: I2C™ Compatible

• Operating Current: 200 μA (typ.)

• Shutdown Current: 2 μA (max.)

• Power-saving One-shot Temperature Measurement

• Available Packages: MSOP-8, SOIC-8

Typical Applications:

• Personal Computers and Servers

• Hard Disk Drives and Other PC Peripherals

• Entertainment Systems

• Office Equipment

• Data Communication Equipment

• General Purpose Temperature Monitoring