Texas Instruments HDC2080 Humidity & Temperature Digital Sensor

Texas Instruments HDC2080 Humidity and Temperature Digital Sensor provides high-accuracy measurements with very low power consumption in a small DFN package. The capacitive-based sensor includes integrated digital features and a heating element to dissipate condensation and moisture. The HDC2080 digital features include programmable interrupt thresholds to provide alerts and system wake-ups without requiring a microcontroller to monitor the system continuously. Combined with programmable sampling intervals, low power consumption, and support for a 1.8V supply voltage, the HDC2080 is designed for battery-operated systems.

The Texas Instruments HDC2080 provides high-accuracy measurement capability for various environmental monitoring and Internet of Things (IoT) applications such as smart thermostats and smart home assistants. For designs where the printed-circuit board (PCB) area is critical, a smaller CSP package option is available thru the HDC2010 with complete software compatibility with the HDC2080.

Auto Measurement Mode enables the HDC2080 to automatically initiate temperature and humidity measurements for applications with strict power-budget restrictions. This feature allows users to configure a microcontroller into deep sleep mode because the HDC2080 no longer depends on the microcontroller to initiate a measurement.

Features

  • 0% to 100% relative humidity range 
  • ±2% (typical), ±3% (maximum) humidity accuracy 
  • ±0.2°C (typical), ±0.4°C (maximum) temperature accuracy 
  • 50nA (typical), 100nA (maximum) sleep mode current 
  • Average supply current (1 measurement/second)
    • 300nA: RH% only (11 bit)
    • 550nA: RH% (11 bit) + temperature (11 bit)
  • Temperature range
    • -40°C to 85°C operating 
    • -40°C to 125°C functional 
  • 1.62V to 3.6V supply voltage range 
  • Available auto measurement mode
  • I2C interface compatibility

Applications

  • Smart thermostats
  • Smart home assistants
  • Washer/dryers
  • HVAC systems
  • Inkjet printers

Functional Block Diagram

Block Diagram - Texas Instruments HDC2080 Humidity & Temperature Digital Sensor

Videos

Pubblicato: 2018-06-18 | Aggiornato: 2024-07-05