GENERAL DESCRIPTION
The ADT7420 is a high accuracy digital temperature sensor offering breakthrough performance over a wide industrial range, housed in an LFCSP package. It contains a band gap temperature reference and a 13-bit ADC to monitor and digitize the temperature to a 0.0625°C resolution. The ADC resolution, by default, is set to 13 bits (0.0625°C). This can be changed to 16 bits (0.0078°C) by setting Bit 7 in the configuration register to 1 (Register Address 0x03).

FEATURES
    Temperature accuracy: ±0.25°C from −20°C to +105°C
    13- or 16-bit user selectable temperature-to-digital converter
    Low drift silicon temperature sensor
    No temperature calibration/correction required by user
    Power saving 1 sample per second (SPS) mode
    Fast first conversion on power-up of 6 ms
    I2C-compatible interface
    Operating temperature: −40°C to +150°C
    Operating voltage: 2.7 V to 5.5 V
    Critical overtemperature indicator
    Programmable overtemperature/undertemperature interrupt
    Low power consumption: 700 µW typical at 3.3 V
    Shutdown mode for lower power: 7 µW typical at 3.3 V
    16-lead RoHS-compliant LFCSP package

APPLICATIONS
    RTD and thermistor replacement
    Medical equipment
    Cold junction compensation
    Industrial control and test
    Food transportation and storage
    Environmental monitoring and HVAC