ADT7420UCPZ-RL7

The ADT7420 is a high accuracy digital temperature sensoroffering breakthrough performance over a wide industrialrange, housed in a 4 mm × 4 mm LFCSP package. It contains aninternal band gap reference, a temperature sensor, and a 16-bitADC to monitor and digitize the temperature to 0.0078°Cresolution. The ADC resolution, by default, is set to 13 bits(0.0625°C). The ADC resolution is a user programmable modethat can be changed through the serial interface.

Key Features

• High performance
  
  • Temperature accuracy
    
    • ±0.20°C from −10°C to +85°C at 3.0 V
    • ±0.25°C from −20°C to +105°C from 2.7 V to 3.3 V
  • 16-bit resolution: 0.0078°C
• Ultralow temperature drift: 0.0073°C
  
  • NIST traceable or equivalent
  • Fast first temperature conversion on power-up of 6 ms
• Easy implementation
  
  • No temperature calibration/correction required by user
  • No linearity correction required
• 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
• Wide operating ranges
  
  • Temperature range: −40°C to +150°C
  • Voltage range: 2.7 V to 5.5 V
• Programmable interrupts
  
  • Critical overtemperature interrupt
  • Overtemperature/undertemperature interrupt
• I²C-compatible interface
• 16-lead, 4 mm × 4 mm LFCSP RoHS-compliant package

Application

• 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