Analog Devices Inc. ADT7320/ADT7420 Digital Temperature Sensors

Analog Devices Inc. ADT7320/ADT7420 Digital Temperature Sensors are ±0.25°C accurate SPI/I²C digital temperature sensors that provide excellent performance over a -40°C to +150°C temperature range. The ADT7320/ADT7420 Digital Sensors include an internal band gap reference, a temperature sensor, and a 16-bit ADC to monitor and digitize the temperature to a resolution of 0.0078°C. Using the SPI/I2C serial interface, designers can change the default ADC resolution set at 13 bits (0.0625°C) to meet their application requirements. Operating at 3.3V, the ADT7320/ADT7420 sensors are guaranteed to operate over the 2.7V to 5.5V supply voltage range with a typical supply current of 210μA. The ADT7320/ADT7420 sensors include a shutdown mode that powers down the device and delivers a typical shutdown current of 2μA at 3.3V. The Analog Devices ADT7320/ADT7420's high accuracy makes the sensors ideal for instrumentation, industrial, and medical applications.


  • High performance
    • Temperature Accuracy
      • ±0.20°C from −10°C to +85°C at 3V
      • ±0.25°C from −20°C to +105°C at 2.7V to 3.3V
    • 16-bit temperature resolution: 0.0078°C
  • Ultra-Low Temperature Drift: 0.0073°C
    • NIST traceable or equivalent
    • Fast first temperature conversion on power-up of 6ms
  • Easy Implementation
    • No temperature calibration/correction required by user
    • No linearity correction required
  • Low Power
    • Power saving 1 sample per second (SPS) mode
    • 700μW typical at 3.3 V in normal mode
    • 7μW typical at 3.3 V in shutdown mode
  • Wide Operating Ranges
    • −40°C to +150°C temperature range
    • 2.7V to 5.5V voltage range
  • Programmable Interrupts
    • Critical over temperature interrupt
    • Over temperature/under temperature interrupt
  • SPI-compatible interface (ADT7320)
  • I2C-compatible interface (ADT7420)
  • 16-lead, RoHS-compliant, 4mm × 4mm LFCSP package


  • RTD and thermistor replacement
  • Thermocouple cold junction compensation
  • Medical equipment
  • Industrial control and test
  • Food transportation and storage
  • Environmental monitoring and HVAC
  • Laser diode temperature control
Publicado: 2017-10-20 | Actualizado: 2023-01-13