Silicon Laboratories SI7021
The Si7021 I2C Humidity and Temperature Sensor is a monolithic CMOS IC integrating humidity and temperature sensor elements, an analog-to-digital converter, signal processing, calibration data, and an I2C Interface. The patented use of industry-standard, low-K polymeric dielectrics for sensing humidity enables the construction of low-power, monolithic CMOS Sensor ICs with low drift and hysteresis, and excellent long term stability. The humidity and temperature sensors are factory-calibrated and the calibration data is stored in the on-chip non-volatile memory.| Part No. | SI7021 |
|---|---|
| Datasheet | SI7021 Download |
| Manufacturer |  Silicon Laboratories |
| Description | I2C HUMIDITY AND TEMPERATURE SENSOR |
| Buy | Stock & Price |
FEATURES
● Precision Relative Humidity Sensor● Factory-calibrated
● ± 3% RH (max), 0–80% RH
● I2C Interface
● High Accuracy Temperature Sensor
● Integrated on-chip heater
●±0.4 °C (max), –10 to 85 °C
● 3x3 mm DFN Package
● 0 to 100% RH operating range
● Excellent long term stability
● Up to –40 to +125 °C operating
● Optional factory-installed cover range
●Low-profile
● Wide operating voltage (1.9 to 3.6 V)
● Low Power Consumption
●Protection during reflow
●Excludes liquids and particulates
●150 µA active current
●60 nA standby current
APPLICATIONS
● HVAC/R● Thermostats/humidistats
● Respiratory therapy
● White goods
● Indoor weather stations
● Micro-environments/data centers
● Automotive climate control and defogging
● Asset and goods tracking
● Mobile phones and tablets
DESCRIPTION
This ensures that the sensors are fully interchangeable, with no recalibration or software changes required. The Si7021 is available in a 3x3 mm DFN package and is reflow solderable. It can be use...
