SiLSi7021-A20-GM
Overview
The Si7021-A20-GM is a high-accuracy digital relative humidity and temperature sensor featuring a factory-installed protective cover and an I2C interface. It integrates a sensing element, an analog-to-digital converter, and signal processing logic into a compact 3x3 mm DFN package, operating efficiently across a 1.9V to 3.6V supply range.
Why Choose This Part
This sensor offers excellent long-term stability and low power consumption, requiring only 150 uA during RH conversions and 60 nA in standby. The factory-calibrated digital output eliminates the need for end-of-line calibration, while the integrated heating element allows for on-chip drying after exposure to high humidity.
Applications
Getting Started
Engineers can evaluate the sensor using the Si7021-EVB evaluation kit or via third-party breakout boards compatible with Arduino and Raspberry Pi. Development involves interfacing through the standard I2C bus at address 0x40, and Silicon Labs provides C-based drivers and example code to simplify integration into embedded projects.
