Overview

The HTU21D sensor is a self-contained humidity and temperature sensor that is fully calibrated during manufacturing.  The sensor can operate from 1.5V to 3.6V, has selectable resolution, low battery detection, and checksum capability. The HTU21D has a low current stand-by mode for power-sensitive applications.

SPECIFICATIONS

  • Measures relative humidity from 0% to 100%
  • Measures temperature from -40°C to 125°C
  • Humidity resolution selectable from 8 to 12 bits
  • Temperature resolution selectable from 11 to 14 bits
  • 0.14 µA sleep current
  • 500 µA operating current (during measurement only)
  • ±3% accuracy  

PERFORMANCE

  • Covers full humidity range of 0 to 100% RH
  • Broad temperature range of -40°C to 125°C
  • Use output data to calculate absolute humidity and dew point
  • Quick recovery from condensation: 10 seconds
  • Fast response time to humidity changes: 5 seconds typical
  • Fully calibrated and interchangeable
  • Recovers fully from condensation
  • Fast digital conversion time: 14 mS typical  

BENEFITS

  • 12-pin connector compatible with Digilent Pmod™
  • I2C interface
  • Secondary 12-pin connector allows daisy chain
  • FPGA bare metal drivers available for download
  • µC C code drivers available for download
  • Built-in heater to remove condensation
  • Available with PTFE environmental filter over the sensor
Features

Please review product documents or contact us for the latest agency approval information.  

Product Type Features

  • Product Type  Peripheral Modules

  • Sensor Type  Humidity

Related Materials

Catalog Pages/Data Sheets

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This information has been provided to you free of charge for your use but remains the sole property of TE Connectivity Corporation ("TE"). While TE has used reasonable efforts to ensure its accuracy, TE does not guarantee that it is error-free, nor makes any other representation, warranty, or guarantee that the information is completely accurate or up-to-date. In many cases, the CAD data has been simplified to remove proprietary detail while maintaining critical interface geometric detail for use by customers. TE expressly disclaims all implied warranties regarding this information, including but not limited to any implied warranties or merchantability or fitness for a particular purpose.