HDC2080 ±2% ultra-low-power, digital humidity sensor with temperature sensor | TI.com

HDC2080
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±2% ultra-low-power, digital humidity sensor with temperature 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) Temperature accuracy (Typ) (°C) Relative humidity operating range (Typ) (%RH) Interface Supply voltage (Min) Supply voltage (Max) Average supply current (Typ) (uA) Operating temperature range (C) Package Group Package size: mm2:W x L (PKG) Rating
HDC2080 Order now ±2     ±0.2     0 - 100     Digital     1.62     3.6     0.55 @ 1 sample / sec     -40 to 85     WSON | 6     6WSON: 9 mm2: 3 x 3 (WSON | 6)     Catalog    
HDC1010 Order now ±2     ±0.2     0 - 100     Digital     2.7     5.5     1.2 @ 1 sample/sec     -40 to 85     DSBGA | 8     See datasheet (DSBGA)     Catalog    
HDC1080 Order now ±2     ±0.2     0 - 100     Digital     2.7     5.5     1.2 @ 1 sample/sec     -40 to 125     WSON | 6     6WSON: 9 mm2: 3 x 3 (WSON | 6)     Catalog    
HDC2010 Order now ±2     ±0.2     0 - 100     Digital     1.62     3.6     0.55 @ 1 sample/sec     -40 to 85         Catalog