Silicon Labs

Si7005 Digital Relative Humidity and Temperature Sensor-on-a-Chip

Silicon Labs introduces the Si7005 digital relative humidity and temperature sensor

Image of Silicon Laboratories' Si7005 Digital Relative Humidity and Temperature Sensor-on-a-ChipSilicon Labs' Si7005 is a highly integrated, digital relative humidity (RH) and temperature sensor that interfaces to its host via the I²C bus. It is very low-power, and the only external BOM is a pair of bypass capacitors. Each device is factory calibrated, removing the need for customer calibration, and the devices are completely interchangeable. The Si7005 is packaged in an open-cavity, 4 mm x 4 mm QFN package to expose the moisture-sensing polymer film. A convenient, low-profile protective cover is available as an option.

Key Features Customer Benefits
Higher integration than discretes or hybrids/MCMs
  • Considerably lower component count reduces design complexity
  • Smaller overall footprint and minimal height and weight
  • Faster time to market
Factory calibration
  • Shorter customer production/test time and lower solution cost
  • Production line and field replaceable/interchangeable
Optional factory-installed hydrophobic filter/cover
  • Protects the exposed sensor before, during and after assembly
  • No materials or labor cost to install the sensor post-reflow or apply/remove protective tape

Si7005

ImageManufacturer Part NumberDescriptionAvailable QuantityPrice
SENS HUMI/TEMP 3.3V I2C 3% 24QFNSI7005-B-GMSENS HUMI/TEMP 3.3V I2C 3% 24QFN0 - ImmediateSee Page for PricingView Details
SENS HUMI/TEMP 3.3V I2C 3% 24QFNSI7005-B-FMSENS HUMI/TEMP 3.3V I2C 3% 24QFN0 - ImmediateSee Page for PricingView Details
SENS HUMI/TEMP 3.3V I2C 3% 24QFNSI7005-B-GM1RSENS HUMI/TEMP 3.3V I2C 3% 24QFN0 - ImmediateSee Page for PricingView Details
SENS HUMI/TEMP 3.3V I2C 3% 24QFNSI7005-B-FM1RSENS HUMI/TEMP 3.3V I2C 3% 24QFN0 - ImmediateSee Page for PricingView Details
BOARD DAUGHTER SI7005SI7005-EVBBOARD DAUGHTER SI70050 - ImmediateSee Page for PricingView Details
BOARD UDP PLUG-IN CARD SI7005SI7005EVB-UDPBOARD UDP PLUG-IN CARD SI70051 - Immediate$439.01View Details
KIT DEV FOR SI7005SI7005EVB-UDP-F960KIT DEV FOR SI70050 - ImmediateSee Page for PricingView Details
Published: 2012-10-19

Related Product Highlight

Internet of Things Silicon Labs offers a variety of components including sensors, microcontrollers, and wireless and RF solutions to help power the Internet of Things (IoT).

Related Articles and Blogs

IoT is Available to Everyone Everyone has access to the IoT and the development kits discussed in this article are just a sample of the tools available to IoT designers.
Designing Accurate Gas Monitoring Systems with Chemiresistive Devices Chemiresistive sensors offer a cost-effective solution for measuring a wide range of gases but require careful consideration of analog support circuitry.
Integrating Temperature and Humidity Sensing on a Chip Silicon Labs Si7005 is an accurate, low-power, factory-calibrated digital solution for measuring temperature, humidity & dew point in a variety of applications.

Related Product Training Modules

Si7005 Temperature/Humidity Sensor IC A low power, small sized IC that minimizes design challenges commonly found with other RH sensors.