Description

    The AT75C and AT175 devices are digital temperature sensors ideal for negative temperature coefficient (NTC) and positive temperature coefficient (PTC) thermistor replacement. The devices offer a typical accuracy of ±1 °C without requiring calibration or external component signal conditioning. Device temperature sensors are highly linear and do not require complex calculations or look-up tables to derive the temperature. The on-chip 12-bit analog-to-digital converter (ADC) offers resolutions down to 0.0625 °C. The devices are available in the industry-standard AT75 SOIC-8 and MSOP-8 footprint.

    The AT175 and AT75C feature SMBus, two-wire, and I²C interface compatibility. The AT175 device allows up to 27 devices on one bus. The AT75C allows up to eight on one bus. The TMP175 and AT75C both feature an SMBus Alert function.The AT175 and AT75C devices are ideal for extended temperature measurement in a variety of communication, computer, consumer, environmental, industrial, and instrumentation applications.

    The AT175 and AT75C devices are specified for operation over a temperature range of −40 °C to +125 °C.

Features

AT75C: 8 Addresses, NIST Traceable

     Digital Output: SMBus^™, Two-Wire, and I²C Interface Compatibility

     Resolution: 9 to 12 Bits, User-Selectable

     Accuracy:

     –  ±1 °C (Typical) from −40 °C to +125 °C

     –  ±2 °C (Maximum) from −40 °C to +125 °C

     Low Quiescent Current: 50-μA, 0.1-μA Standby

Wide Supply Range: 2.7 V to 5.5 V

Small 8-Pin MSOP and 8-Pin SOIC Packages

Applications

 Power-Supply Temperature Monitoring

 Computer Peripheral Thermal Protection

 Notebook Computers

 Cell Phones

 Battery Management

 Office Machines

 Thermostat Controls

 Environmental Monitoring and HVAC

 Electro Mechanical Device Temperature

Typical Application