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SI7021-A20-GM1

SILICON LABS - SI7021-A20-GM1 - Humidity/Temperature Sensor, 0% to 100% RH/-40°C to 85°C Range, I2C, Digital, 1.9V to 3.6V, DFN-6

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Overview of SI7021-A20-GM1

The SI7021-A20-GM1 is a digital humidity and temperature sensor IC that offers high accuracy and reliability for environmental sensing applications. It features a digital I2C interface for easy integration with microcontrollers and other digital systems, making it ideal for IoT and weather monitoring projects.

Pinout

(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

  • VDD: Power supply input
  • GND: Ground connection
  • SDA: I2C data line
  • SCL: I2C clock line
  • ADDR: Address select for I2C communication
  • NC: No connection

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the SI7021-A20-GM1 IC for a visual representation.

Key Features

  • Digital Humidity and Temperature Sensor: Provides accurate humidity and temperature readings digitally.
  • High Accuracy: Offers precise measurements for reliable environmental monitoring.
  • Digital Interface: Utilizes I2C communication for easy interfacing with various systems.
  • Low Power Consumption: Operates with minimal power, suitable for low-power applications.
  • Compact Size: Available in a small package, making it space-efficient for electronic designs.

Note: For detailed technical specifications, please refer to the SI7021-A20-GM1 datasheet.

Application

  • Environmental Sensing: Ideal for use in environmental monitoring systems, HVAC control, and weather stations.
  • IoT Projects: Suitable for IoT devices requiring humidity and temperature sensing capabilities.
  • Data Logging: Used in data logging applications for tracking environmental conditions over time.

Functionality

The SI7021-A20-GM1 sensor IC provides accurate digital readings of humidity and temperature, enabling precise environmental monitoring and control in various applications.

Usage Guide

  • Power Supply: Connect VDD (Pin X) to the power supply voltage.
  • I2C Connection: Connect SDA (Pin X) and SCL (Pin X) to the corresponding I2C lines of the microcontroller.
  • Address Configuration: Use ADDR (Pin X) to set the I2C address for communication if applicable.

Frequently Asked Questions

Q: How accurate are the humidity readings of the SI7021-A20-GM1?
A: The SI7021-A20-GM1 provides humidity measurements with high accuracy, typically within ±3% RH.

Q: Can the SI7021-A20-GM1 be operated in harsh environmental conditions?
A: The SI7021-A20-GM1 is designed to operate within a wide range of environmental conditions, making it suitable for various applications including industrial and outdoor settings.

Equivalent

For similar functionalities, consider these alternatives to the SI7021-A20-GM1:

  • DHT22: A digital humidity and temperature sensor with similar accuracy and I2C interface.
  • SHT31: This sensor offers high-precision humidity and temperature measurements for demanding applications.

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Product Category Board Mount Humidity Sensors RoHS Details
RH Range 0 % to 100 % RH Accuracy +/- 3 %
Mounting Style SMD/SMT Output Type Digital
Interface Type I2C Resolution 12 bit
Full Temp Accuracy +/- 0.4 C Operating Supply Current 150 uA
Supply Voltage - Min 1.9 V Supply Voltage - Max 3.6 V
Minimum Operating Temperature - 40 C Maximum Operating Temperature + 125 C
Package / Case DFN-6 Brand Silicon Labs
Description/Function I2C humidity and temperature sensor Moisture Sensitive Yes
Product Board Mount Product Type Humidity Sensors
Series SI7021 Factory Pack Quantity 200
Subcategory Sensors Unit Weight 0.000847 oz

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