GENERAL DESCRIPTION

The ADT7320 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 analog-to-digital converter (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 (Register Address 0x01).

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

   SPI-compatible interface

   Operating temperature from −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 controls and test

   Food transportation and storage

   Environmental monitoring and HVAC