HDC2080 Low Power Humidity and Temperature Digital Sensor | TI.com

HDC2080 (ACTIVE) Low Power Humidity and Temperature Digital Sensor

 

Description

The HDC2080 device is an integrated humidity and temperature sensor that provides high accuracy measurements with very low power consumption in a small DFN package. The capacitive-based sensor includes new 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 be continuously monitoring the system. Combined with programmable sampling intervals, a low power consumption, and a support for a 1.8-V supply voltage, the HDC2080 is designed for battery-operated systems.

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

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

Programable temperature and humidity thresholds in the HDC2080 allow the device to send a hardware interrupt to wake up the microcontroller when necessary. In addition, the power consumption of the HDC2080 is significantly reduced, which helps to minimize self-heating and improve measurement accuracy.

The HDC2080 is factory-calibrated to 0.2°C temperature accuracy and 2% relative humidity accuracy.

Features

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

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Parametrics

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Part number Order Relative humidity accuracy (Typ) (%RH) Relative humidity operating range (Typ) (%RH) Temperature accuracy (Typ) (°C) Supply voltage (Min) Supply voltage (Max) Average supply current (Typ) (uA) Interface Rating Operating temperature range (C) Package size: mm2:W x L (PKG)
HDC2080 Order now ±2     0 - 100     ±0.2     1.62     3.6     0.55 @ 1 sample / sec     I2C     Catalog     -40 to 85     See datasheet (WSON)    
HDC1080 Order now ±2     0 - 100     ±0.2     2.7     5.5     1.2 @ 1 sample/sec     I2C     Catalog     -40 to 125     See datasheet (WSON)    
HDC2010 Order now ±2     0 - 100     0.2     1.62     3.6     0.55 @ 1 sample/sec     I2C     Catalog     -40 to 85