Digital Humidity/Temperature Sensor - HIH7000 Series

1. HIH7000 Series Digital Humidity/Temperature Sensor Product Description

The HIH7000 series digital humidity/temperature sensor is a digital output relative humidity (RH) and temperature sensor combined in the same package. Similar humidity sensors require a 12-hour rehydration process at 75% RH (which must be completed in a special equipment chamber) to correct reflow temperature drift. Honeywell sensors also experience temperature drift after reflow; however, they only require a 5-hour rehydration process at room conditions (>50% RH). The new Honeywell HIH7000 series sensors use laser-trimmed, thermoset polymer capacitive sensing elements. The multi-layer construction of the element resists most application hazards such as condensation, dirt, dust, oil, and common environmental chemicals, helping to provide stable and reliable technical solutions for industry customers.

2. HIH7000 Series Digital Humidity/Temperature Sensor Features

• Long-Term Stability (maintains 1.2 %RH for over 5 years):

• Greatly reduces performance issues

• No need for sensor maintenance or replacement during its service life, helping to extend system uptime

• Eliminates the need for periodic sensor calibration in applications, reducing workload and cost

• Reliability (MTTF 9,312,507 HR):The multi-layer construction of the thermoset polymer capacitive sensing element resists most application hazards such as condensation, dirt, dust, oil, and common environmental chemicals,helping to provide stable and reliable technical solutions for industry customers。

• Low Total Cost Solution:Because the sensor is a combined humidity/temperature sensor, it provides a low total cost solution.

• Combined Humidity and Temperature Sensor:This allows relative humidity measurements to be temperature-compensated and provides a second independent temperature sensor output; allowing users to purchase only one sensor instead of two.

• Energy Saving:

• Low Supply Voltage:Can operate at DC voltages as low as 2.3 Vdc, enabling use in low-power and wireless-compatible applications, improving energy efficiency and extending system battery life

• Low Power Consumption:When not measuring in the application, the sensor enters sleep mode, consuming only 1 µA, while in full operation in battery-powered systems, it consumes 650 µA; sleep mode helps maximize battery life, reduce power supply size, and lower overall application weight

• High Resolution:The humidity sensor used in the application provides 14-bit high resolution, and the temperature sensor also provides 14-bit resolution, helping user systems detect very small relative humidity or temperature changes

• True Effective Temperature-Compensated Digital I2C Output or SPI Output:This allows customers to remove signal conditioning components from the printed circuit board, freeing up board space and reducing costs associated with these components (e.g., procurement, inventory, assembly). True effective temperature-compensated digital I2C output or SPI output typically avoids issues caused by placing multiple signal conditioning elements on the PCB, while simplifying integration with microprocessors, eliminating the need for complex signal conditioning by customers.

• Housing Type:SOIC-8 SMD (Surface Mount Device) or SIP 4-pin: Ultra-small size allows flexible use in applications, occupies less space on the PCB, making layout easier in crowded PCBs or small devices; industry-standard design simplifies embedded design

• Filter:Optional hydrophobic filter and condensation-resistant, suitable for various condensation environments, or without hydrophobic filter for non-condensing environments

• Tape and Reel:Suitable for high-volume, automated pick-and-place manufacturing, eliminating wire misalignment on the PCB and helping customers reduce production costs.

• Wide Operating Temperature Range:Can be used in many applications

• Optional One or Two %RH Alarm Outputs:Enables monitoring of whether RH levels exceed or fall below predetermined and critical levels in the application

• Versatile ASIC:Enhances flexibility in applications by reducing or eliminating the risk and cost of OEM calibration

• RoHS and WEEE Compliant, Halogen-Free

3. HIH7000 Series Digital Humidity/Temperature Sensor Application Areas

Industrial:

•  HVAC/R

• Air Compressors

• Weather Stations

• Telecommunication Cabinets

• Incubators/Microenvironments

Medical:

• Respiratory Therapy Equipment

• Incubators/Microenvironments

  
  

4. HIH7000 Series Digital Humidity/Temperature Sensor Mechanical Drawing

5. HIH7000 Series Digital Humidity/Temperature Sensor Product Specifications