ADT7320UCPZ-RL7

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1. DESCRIPTION

The ADT7320UCPZ-RL7 is a high accuracy digital temperature sensor that offers breakthrough performance over a wide industrial temperature range, housed in a 4 mm × 4 mm LFCSP package. It contains an internal band gap reference, a temperature sensor, and a 16-bit analog-to-digital converter (ADC) to monitor and digitize the temperature to a resolution of 0.0078°C. The ADC resolution, by default, is set to 13 bits (0.0625°C). The ADC resolution is a user programmable mode that can be changed through the serial interface. The ADT7320UCPZ-RL7 is guaranteed to operate over supply voltages from 2.7 V to 5.5 V. Operating at 3.3 V, the average supply current is typically 210 µA. The ADT7320UCPZ-RL7 has a shutdown mode that powers down the device and offers a shutdown current of typically 2.0 µA at 3.3 V. The ADT7320UCPZ-RL7 is rated for operation over the −40°C to +150°C temperature range. The CT pin is an open-drain output that becomes active when the temperature exceeds a programmable critical temperature limit. The INT pin is also an open-drain output that becomes active when the temperature exceeds a programmable limit. The INT pin and CT pin can operate in either comparator or interrupt mode.

2. FEATURES

    1. High performance

        - Temperature accuracy

        - 16-bit temperature resolution: 0.0078°C

        - Ultralow temperature drift: 0.0073°C

        - NIST traceable or equivalent

        - Fast first temperature conversion on power-up of 6 ms

    2. Easy implementation

        - No temperature calibration/correction required by user

        - No linearity correction required

    3. Low power

        - Power saving 1 sample per second (SPS) mode

        - 700 µW typical at 3.3 V in normal mode

        - 7 µW typical at 3.3 V in shutdown mode

    4. Wide operating ranges

        - Temperature range: −40°C to +150°C

        - Voltage range: 2.7 V to 5.5 V

    5. Programmable interrupts

        - Critical overtemperature interrupt

        - Overtemperature/undertemperature interrupt

    6. SPI-compatible interface

    7. 16-lead, RoHS-compliant, 4 mm × 4 mm LFCSP package

3. APPLICATIONS

    1. RTD and thermistor replacement

    2. Thermocouple cold junction compensation

    3. Medical equipment

    4. Industrial control and test

    5. Food transportation and storage

    6. Environmental monitoring and HVAC

    7. Laser diode temperature control