Silicon Labs’ Si70xx state of the art relative humidity and temperature sensors utilize proven techniques for measuring humidity using polymer dielectric film along with CMOS mixed signal integrated circuits. These monolithic ICs combine fully calibrated humidity and temperature sensing elements, an I²C or PWM interface and on-chip signal conditioning into a compact, rugged and reliable package.
Relative Humidity and Temperature Sensors
|Family||Description||RH Accuracy Max (RH)||Temp Accuracy Max (C)||Package Type|
|Si7007/22/23||Dig RH + Temp Sensor with PWM Output||±3%, ±4%, ±5%||±0.4, ±1||DFN6|
|Si7006/13/20/21/34||Dig I2C RH + Temp Sensor||±3%, ±4%, ±5%||±0.4, ±1||DFN10, DFN6, QFN6|
|Si7015||Not Rec for New Designs – Use Si7020||±4.5%||±1||QFN24|
|Si7005||Not Rec for New Designs – Use Si7020||±4.5%||±1||QFN24|
The Si705x Digital Temperature Sensors offer industry-leading low power consumption and high accuracy across the entire operating voltage and temperature range. These monolithic CMOS ICs feature a band-gap temperature sensor element, an analog-to-digital converter with up to 14-bit resolution, signal processing, calibration data, and an I2C interface. The patented use of novel signal processing and analog design enables the sensors to maintain their accuracy over a wide temperature and voltage range, while consuming very little current.
The Si705x devices are fully factory-calibrated and are available in a 3×3 mm DFN package. The industry-standard I2C interface can operate at up to 400 kHz. Requiring just 195nA of average current when sampled once per second, the Si705x can operate for several years with just a single coin cell battery.
Si705x Product Matrix
|Part Number||Data Sheet||Description||Temp. Accuracy typ (°C)||Temp. Accuracy max (°C)||Temperature Range (°C)||Package Type|
|Digital I2C Temperature Sensor||±0.5||±1.0||-40 to 125||DFN6|
|Digital I2C Temperature Sensor||±0.1||±0.1||36 to 41||DFN6|
|Digital I2C Temperature Sensor||±0.2||±0.3||-40 to 125||DFN6|
|Digital I2C Temperature Sensor||±0.3||±0.4||-40 to 125||DFN6|
|Digital I2C Temperature Sensor||±0.4||±0.5||-40 to 125||DFN6|