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Analog Devices Inc. ADT7320/ADT7420数字温度传感器

Analog Devices ADT7320/ADT7420数字温度传感器是精度为±0.25°C的SPI/I²C数字温度传感器，在-40°C至+150°C温度范围内具有出色性能。ADT7320/ADT7420数字传感器内置一个带隙基准电压源、一个温度传感器和一个16位ADC，能够以0.0078°C的分辨率对温度进行监控和数字化管理。借助SPI/I2C串行接口，设计人员可以更改默认设置为13位 (0.0625°C) 的ADC分辨率，以满足其应用要求。ADT7320/ADT7420传感器的保证工作电压范围为2.7V至5.5V，工作电压为3.3V，典型电源电流为210μA。ADT7320/ADT7420传感器设有关断模式来实现器件断电，3.3V时的典型关断电流为2μA。ADT7320/ADT7420的高精度使其成为非常适合用于仪器仪表、工业和医疗应用的传感器。

特性

  • 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

应用

  • 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

Datasheets

发布日期: 2017-10-20 | 更新日期: 2023-01-13