Description

  The AT100 and AT101 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 ADC offers resolutions down to 0.0625°C. The devices are available in 6-Pin SOT-23 packages.

    The AT100 and AT101 devices feature SMBus, Two-Wire, and I²C  interface compatibility. The AT100 device allows up to eight devices on one bus. The AT101 device offers an SMBus Alert function with up to three devices per bus.

    The AT100 and AT101 devices are ideal for extended temperature measurement in a variety of communication, computer, consumer, environmental, industrial, and instrumentation applications. 

    The AT100 and AT101 devices arespecified for operation over a temperature range of −55°C to 125°C.

Features

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

    Resolution: 9 to 12 Bits, User-Selectable

    Accuracy:

    –  ±1°C (Typical) from –55°C to 125°C

    –  ±2°C (Maximum) from –55°C to 125°C

    Low Quiescent Current: 45-μA, 0.1-μA Standby

    Wide Supply Range: 2.7 V to 5.5 V

    AT100 Features Two Address Pins

    AT101 Features One Address Pin and an ALERT Pin

    6-Pin SOT-23 Package

Applications

    Power-Supply Temperature Monitoring

    Computer Peripheral Thermal Protection

    Notebook Computers

    Cell Phones

    Battery Management

    Office Machines

    Thermostat Controls

    Environmental Monitoring and HVAC

    Electromechanical Device Temperature

Diagram