Si7021 Industrial High Precision Humidity Sensor I2C Interface

Detail

Product Description

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. 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 used as a hardware- and software-compatible drop-in upgrade for existing RH/temperature sensors in 3x3 mm DFN-6 packages, featuring precision sensing over a wider range and lower power consumption. The optional factory-installed cover offers a low profile, convenient means of protecting the sensor during assembly (e.g., reflow soldering) and throughout the life of the product, excluding liquids (hydrophobic/oleophobic) and particulates
•The Si7021 offers an accurate, low-power, factory-calibrated digital solution ideal for measuring humidity, dew-point, and temperature, in applications ranging from HVAC/R and asset tracking to industrial and consumer platforms
•Features:
•Precision Relative Humidity Sensor
•± 3% RH (max), 0–80% RH
•High Accuracy Temperature Sensor
•±0.4 °C (max), –10 to 85 °C
•0 to 100% RH operating range
•Up to –40 to +125 °C operating range
•Wide operating voltage (1.9 to 3.6 V)
•Low Power Consumption 150 μA active current
•60 nA standby current
•Factory-calibrated
•I2C Interface
•Integrated on-chip heater
•3x3 mm DFN Package
•Excellent long term stability
•Optional factory-installed cover
•Low-profile
•Protection during reflow
•Excludes liquids and particulates
•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
•Size: 1.3*1cm/0.51*0.39"