MAX972EPA+ - English Editing Encyclopedia Entry

Product Overview

• Category: Integrated Circuit (IC)
• Use: Audio Amplifier
• Characteristics: High-performance, low-power, stereo audio amplifier
• Package: 8-pin DIP (Dual In-line Package)
• Essence: Provides amplification and control for audio signals
• Packaging/Quantity: Available in tubes of 25 or reels of 2,500 units

Specifications

• Supply Voltage: 2.7V to 5.5V
• Output Power: 150mW per channel into 16Ω load
• Total Harmonic Distortion + Noise: 0.1% at 150mW output power
• Input Impedance: 100kΩ
• Shutdown Current: 0.01μA (typical)

Pin Configuration

The MAX972EPA+ has the following pin configuration:

```

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| | --| VDD OUT|-- Output --| GND SHDN|-- Shutdown --| IN- IN+ |-- Inputs |___________| ```

Functional Features

• Low quiescent current consumption
• Wide supply voltage range
• Thermal and short-circuit protection
• Shutdown mode for power-saving
• Excellent audio quality with low distortion

Advantages and Disadvantages

Advantages: - Low power consumption - Small form factor - High-quality audio output - Protection features ensure reliability

Disadvantages: - Limited output power compared to higher wattage amplifiers - Not suitable for high-power audio applications

Working Principles

The MAX972EPA+ is a class AB stereo audio amplifier that operates on a single positive power supply. It utilizes a bridge-tied load (BTL) configuration to provide amplification for audio signals. The amplifier receives input signals through the IN+ and IN- pins, and the amplified output is available at the OUT pin.

The device incorporates thermal and short-circuit protection mechanisms to ensure safe operation. It also features a shutdown mode that reduces power consumption when the amplifier is not in use.

Detailed Application Field Plans

The MAX972EPA+ is commonly used in various portable audio devices, such as:

1. MP3 players
2. Mobile phones
3. Portable gaming consoles
4. Personal digital assistants (PDAs)
5. Bluetooth speakers

Its low power consumption, small package size, and high-quality audio output make it suitable for these applications.

Alternative Models

Here are some alternative models that can be considered as replacements for the MAX972EPA+:

1. TPA3116D2 - Class D audio amplifier with higher output power.
2. LM386 - Low-power audio amplifier with a simpler design.
3. TDA7297 - Dual bridge audio amplifier with higher output power.

These alternatives offer different features and specifications, allowing users to choose based on their specific requirements.

In conclusion, the MAX972EPA+ is a high-performance, low-power stereo audio amplifier suitable for portable audio devices. Its compact size, excellent audio quality, and protection features make it a popular choice in the industry.

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