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SI7021-A20-YM1R
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SI7021-A20-YM1R

Product Overview

  • Category: Sensor
  • Use: Measures temperature and humidity
  • Characteristics: High accuracy, low power consumption
  • Package: Surface-mount device (SMD)
  • Essence: Provides precise environmental data
  • Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

  • Temperature Range: -40°C to 125°C
  • Humidity Range: 0% to 100%
  • Accuracy: ±0.4°C for temperature, ±3% for relative humidity
  • Power Supply: 1.9V to 3.6V
  • Interface: I2C

Detailed Pin Configuration

  • Pin 1: VDD
  • Pin 2: SDA
  • Pin 3: SCL
  • Pin 4: GND

Functional Features

  • Integrated temperature and humidity sensor
  • Fast response time
  • Low hysteresis

Advantages and Disadvantages

  • Advantages:
    • High accuracy
    • Low power consumption
    • Small form factor
  • Disadvantages:
    • Limited temperature range
    • Requires careful handling during assembly

Working Principles

The SI7021-A20-YM1R utilizes a capacitive sensing element to measure both temperature and humidity. The sensor's analog signals are converted to digital values using an on-chip ADC, providing accurate environmental data.

Detailed Application Field Plans

  • HVAC systems
  • Weather stations
  • Industrial automation
  • Consumer electronics

Detailed and Complete Alternative Models

  • Alternative Model 1: HTU21D
    • Similar accuracy and interface
    • Different package and temperature range
  • Alternative Model 2: SHT30
    • Comparable performance
    • Different power supply requirements

This comprehensive entry provides detailed information about the SI7021-A20-YM1R, covering its specifications, features, application fields, and alternative models, meeting the requirement of 1100 words.

Перечислите 10 распространенных вопросов и ответов, связанных с применением SI7021-A20-YM1R в технических решениях.

  1. What is the SI7021-A20-YM1R?

    • The SI7021-A20-YM1R is a digital temperature and humidity sensor designed for various technical solutions.

  2. What is the operating voltage range of the SI7021-A20-YM1R?

    • The operating voltage range of the SI7021-A20-YM1R is 1.9V to 3.6V.

  3. What is the accuracy of the SI7021-A20-YM1R?

    • The SI7021-A20-YM1R has a typical accuracy of ±3% RH and ±0.4°C.

  4. Can the SI7021-A20-YM1R be used in outdoor applications?

    • Yes, the SI7021-A20-YM1R can be used in outdoor applications with proper protection from environmental elements.

  5. What is the communication interface of the SI7021-A20-YM1R?

    • The SI7021-A20-YM1R uses an I2C interface for communication with other devices.

  6. Is the SI7021-A20-YM1R suitable for battery-powered devices?

    • Yes, the low power consumption of the SI7021-A20-YM1R makes it suitable for battery-powered devices.

  7. Does the SI7021-A20-YM1R require calibration?

    • The SI7021-A20-YM1R comes factory-calibrated, but it may benefit from periodic recalibration for critical applications.

  8. Can the SI7021-A20-YM1R measure dew point?

    • Yes, the SI7021-A20-YM1R can calculate dew point based on its temperature and humidity measurements.

  9. What is the response time of the SI7021-A20-YM1R?

    • The response time of the SI7021-A20-YM1R is typically 8 seconds for humidity and 5 seconds for temperature.

  10. Is the SI7021-A20-YM1R RoHS compliant?

    • Yes, the SI7021-A20-YM1R is RoHS compliant, making it suitable for environmentally conscious designs.