Rohm Semiconductor
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BA3308
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BA3308: Audio Power Amplifier

Basic Information Overview

  • Category: Integrated Circuit (IC)
  • Use: Audio power amplifier for consumer electronics
  • Characteristics: High output power, low distortion, compact size
  • Package: Dual in-line package (DIP), surface-mount device (SMD)
  • Essence: Provides amplification of audio signals for various electronic devices
  • Packaging/Quantity: Typically available in reels or tubes containing multiple units

Specifications

  • Power Supply Voltage: 4.5V to 12V
  • Output Power: Up to 2.8W
  • Total Harmonic Distortion (THD): 0.2% at 1kHz, 1W
  • Operating Temperature Range: -40°C to 85°C
  • Package Type: 8-pin DIP or SOIC

Detailed Pin Configuration

  1. VCC (Power supply voltage)
  2. GND (Ground)
  3. IN- (Inverting input)
  4. IN+ (Non-inverting input)
  5. VEE (Negative power supply)
  6. OUT (Output)
  7. Bypass
  8. Standby/Mute

Functional Features

  • Low quiescent current
  • Short-circuit protection
  • Thermal shutdown protection
  • Wide operating voltage range

Advantages and Disadvantages

Advantages

  • High output power for a small package size
  • Low distortion for high-quality audio reproduction
  • Built-in protection features enhance reliability

Disadvantages

  • Limited output power compared to higher wattage amplifiers
  • Requires external components for full functionality

Working Principles

The BA3308 is designed to amplify low-power audio signals from devices such as smartphones, portable music players, and other consumer electronics. It utilizes internal circuitry to amplify the input signal while maintaining low distortion and high efficiency. The built-in protection features ensure safe operation under various conditions.

Detailed Application Field Plans

The BA3308 is commonly used in applications such as: - Portable speakers - Headphone amplifiers - Car audio systems - Home audio equipment

Detailed and Complete Alternative Models

  • TDA2822M: Dual low-voltage power amplifier
  • LM386: Low voltage audio power amplifier
  • TPA3116D2: High-performance Class-D amplifier

This information provides a comprehensive overview of the BA3308 audio power amplifier, including its specifications, pin configuration, functional features, advantages, disadvantages, working principles, application field plans, and alternative models.

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10个与BA3308在技术解决方案中的应用相关的常见问题及解答

  1. What is the BA3308 integrated circuit used for?

    • The BA3308 is commonly used as a dual preamplifier for audio applications, such as in car stereo systems and portable audio devices.

  2. What is the power supply voltage range for the BA3308?

    • The typical power supply voltage range for the BA3308 is 5V to 15V, making it suitable for various electronic devices.

  3. Can the BA3308 be used in single-supply applications?

    • Yes, the BA3308 can be used in single-supply applications with proper biasing and decoupling capacitors.

  4. What are the typical input impedance values for the BA3308?

    • The typical input impedance for each channel of the BA3308 is around 50 kilohms, which is suitable for most audio signal sources.

  5. Does the BA3308 require external compensation components?

    • No, the BA3308 has internal compensation, so it does not require external compensation components.

  6. What is the maximum output voltage swing of the BA3308?

    • The maximum output voltage swing of the BA3308 is typically around ±7V when operating from a ±15V power supply.

  7. Is the BA3308 suitable for use in automotive audio systems?

    • Yes, the BA3308 is well-suited for automotive audio systems due to its low noise and wide supply voltage range.

  8. What is the total harmonic distortion (THD) performance of the BA3308?

    • The THD performance of the BA3308 is typically very low, making it suitable for high-quality audio applications.

  9. Can the BA3308 be used in conjunction with tone control circuits?

    • Yes, the BA3308 can be used in conjunction with tone control circuits to provide comprehensive audio signal processing.

  10. Are there any specific layout considerations for using the BA3308 in PCB designs?

    • It is recommended to keep the input and output traces short and separate, and to place decoupling capacitors close to the power supply pins of the BA3308 to minimize noise and interference.

These questions and answers cover various aspects of the application of the BA3308 integrated circuit in technical solutions, providing a comprehensive understanding of its capabilities and usage.