Details

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BUY SI7120ADN-T1-GE3 https://www.utsource.net/itm/p/12610237.html

Parameter	Description	Min	Typ	Max	Unit
Supply Voltage (VDD)	Operating supply voltage	1.9		3.6	V
Supply Current	Quiescent current		4		渭A
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	掳C
RH Accuracy	Accuracy of relative humidity measurement		卤3		%RH
Temp Accuracy	Accuracy of temperature measurement		卤0.4		掳C
Resolution	Resolution of measurements		12-bit		bits
Response Time	Time to reach 63% of final reading		8		s

Instructions for SI7120ADN-T1-GE3

1. Power Supply:

   • Ensure the supply voltage is within the range of 1.9V to 3.6V.
   • Connect VDD and GND appropriately.

2. 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.

3. Initialization:

   • Power up the sensor and initialize the I2C communication.
   • Send the appropriate initialization commands to configure the sensor for operation.

4. 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.

5. 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.

6. 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.

7. 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)