SI7120ADN-T1-GE3: Top Choice in United States (USA) Utsource Holding Company Limited

Description

Parameter	Description	Min	Typ	Max	Unit
Supply Voltage (VDD)	Operating supply voltage	1.9		3.6	V
Supply Current	Quiescent current		4		μA
Output Type	Digital interface type		I2C
Relative Humidity Range	Measurement range for relative humidity	0		80	%RH
Temperature Range	Measurement range for temperature	-10		85	°C
RH Accuracy	Accuracy of relative humidity measurement		±3		%RH
Temp Accuracy	Accuracy of temperature measurement		±0.4		°C
Resolution	Resolution of measurements		12-bit		bits
Response Time	Time to reach 63% of final reading		8		s

Power Supply:
- Ensure the supply voltage is within the range of 1.9V to 3.6V.
- Connect VDD and GND appropriately.
I2C Interface Setup:
- Connect SDA (data line) and SCL (clock line) to your microcontroller or processor.
- Configure the I2C bus settings as per the device requirements.
Initialization:
- Power up the sensor and initialize the I2C communication.
- Send the appropriate initialization commands to configure the sensor for operation.
Measurement Mode:
- Select the desired mode (relative humidity or temperature) by sending the corresponding command over I2C.
- Wait for the response time (typically 8 seconds) before reading the data.
Data Reading:
- Read the data from the sensor using the I2C protocol.
- Convert the raw data into relative humidity and temperature values using the provided formulas or calibration data.
Handling and Environment:
- Place the sensor in a location where it can accurately measure the environmental conditions without obstructions.
- Avoid exposing the sensor to extreme conditions outside its specified operating range.
Shutdown Mode:
- To reduce power consumption, use the shutdown mode when not taking measurements.
- Reactivate the sensor by sending the appropriate command before initiating a new measurement cycle.

For detailed specifications and advanced configurations, refer to the datasheet provided by Silicon Labs.

(For reference only)