AKM Semiconductor Inc.
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AK8973
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AK8973

Product Overview

Category

The AK8973 is a 3-axis electronic compass sensor designed for use in various electronic devices.

Use

It is used to detect the direction of the Earth's magnetic field and provide accurate heading information.

Characteristics

  • High sensitivity and accuracy
  • Low power consumption
  • Compact size
  • Digital output
  • Wide operating temperature range

Package

The AK8973 is typically available in a small surface-mount package, making it suitable for integration into compact electronic devices.

Essence

The essence of the AK8973 lies in its ability to provide reliable and precise heading information for electronic applications.

Packaging/Quantity

The sensor is commonly supplied in tape and reel packaging, with quantities varying based on manufacturer specifications.

Specifications

  • Operating Voltage: 2.4V to 3.6V
  • Operating Current: 0.75mA (typical)
  • Output Resolution: 16-bit
  • Measurement Range: ±4900µT

Detailed Pin Configuration

The AK8973 features a standard pin configuration with pins designated for power supply, ground, and communication interface.

| Pin Name | Function | |----------|----------------| | VDD | Power Supply | | GND | Ground | | SDA | Serial Data | | SCL | Serial Clock |

Functional Features

  • Digital output via I2C interface
  • Self-calibration function
  • Noise suppression technology
  • Built-in temperature compensation

Advantages and Disadvantages

Advantages

  • High accuracy
  • Low power consumption
  • Small form factor
  • Easy integration with microcontrollers

Disadvantages

  • Susceptible to magnetic interference in certain environments
  • Limited measurement range compared to some alternative models

Working Principles

The AK8973 operates based on the principles of magnetoresistance, utilizing Hall effect sensors to measure changes in the Earth's magnetic field and determine the device's orientation.

Detailed Application Field Plans

The AK8973 is widely used in various applications, including: - Mobile phones and tablets for augmented reality and navigation - Wearable devices for fitness tracking and orientation sensing - Automotive navigation systems for heading information - Consumer electronics for gaming and virtual reality experiences

Detailed and Complete Alternative Models

Some alternative models to the AK8973 include: - HMC5883L - MAG3110 - QMC5883L - MMC5883MA

These alternatives offer similar functionality and are often chosen based on specific design requirements and cost considerations.

In conclusion, the AK8973 is a versatile 3-axis electronic compass sensor with high accuracy and low power consumption, making it suitable for a wide range of electronic applications.

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技術ソリューションにおける AK8973 の適用に関連する 10 件の一般的な質問と回答をリストします。

  1. What is AK8973?

    • AK8973 is a 3-axis electronic compass sensor developed by Asahi Kasei Microdevices Corporation.

  2. How does AK8973 work?

    • AK8973 uses magnetoresistive technology to detect the Earth's magnetic field and determine the direction of the magnetic north.

  3. What are the typical applications of AK8973?

    • AK8973 is commonly used in smartphones, tablets, and other mobile devices for providing accurate heading information and enhancing location-based services.

  4. How accurate is AK8973 in determining direction?

    • AK8973 has a high accuracy in determining direction, with typical error margins of less than 2 degrees.

  5. Can AK8973 be used in automotive applications?

    • Yes, AK8973 can be integrated into automotive navigation systems and advanced driver assistance systems to provide reliable heading information.

  6. Does AK8973 require calibration?

    • Yes, AK8973 typically requires calibration to compensate for local magnetic disturbances and ensure accurate heading readings.

  7. Is AK8973 sensitive to external magnetic interference?

    • AK8973 is designed to have robust immunity to external magnetic interference, but proper shielding and placement considerations are important for optimal performance.

  8. What are the power requirements for AK8973?

    • AK8973 has low power consumption, making it suitable for battery-powered devices, with typical operating currents in the range of a few milliamperes.

  9. Can AK8973 be used in conjunction with GPS for navigation?

    • Yes, AK8973 is often used in combination with GPS to provide more accurate and reliable positioning and navigation solutions.

  10. Are there any limitations to using AK8973 in certain environments?

    • AK8973 may experience reduced performance in highly magnetically noisy environments, and proper integration and testing are necessary for such scenarios.