Si7006/13/20/21/34 Relative Humidity and Temperature Sensor with I2C Interface

Our Si7006/13/20/21/34 family is our latest generation of I²C relative humidity and temperature sensors. All devices combine fully factory-calibrated humidity and temperature sensor elements with an analog-to-digital converter, signal processing, and an I²C host interface. The Si7013/20/21/34 sensors are designed for high-accuracy applications, while Si7006 is targeted toward lower-accuracy applications traditionally using discrete RH/T sensors.

Featuring innovative CMOS design, these devices offer the lowest power consumption in the industry for a relative humidity and temperature sensor. Patented use of industry-standard low-K polymer dielectrics provides excellent accuracy and long-term stability, along with low drift and low hysteresis. 

With full factory calibration, all Si70xx devices require no additional RH/temperature calibration during PCB assembly. The second generation Si7006/13/20/21 devices feature a 3x3 mm package and wide 1.9 to 3.6 V power supply voltage, while the third generation Si7034 devices feature a smaller 2x2 mm package and a low 1.67 to 1.98 V power supply voltage popular in wearable and consumer devices. For protection against dust, dirt, and chemical contaminants, the Si7006/13/20/21 devices can be fitted with an optional factory-installed cover. In addition, designs requiring 2-zone temperature sensing will benefit from the Si7013’s auxiliary sensor input with programmable linearization.