MAX975EUA

Product Overview

• Category: Integrated Circuit (IC)
• Use: Audio Amplifier
• Characteristics: High-performance, low-power stereo audio amplifier
• Package: 8-pin µMAX® package
• Essence: Provides high-quality audio amplification in a compact form factor
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Output Power: 1.4W per channel into 8Ω load at 5V supply
• Total Harmonic Distortion + Noise (THD+N): 0.04% at 1kHz, 1.2W output power
• Shutdown Current: <1µA
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX975EUA features the following pin configuration:

```

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| | --| VDD OUT|-- Channel 1 Output --| GND IN+|-- Channel 1 Non-Inverting Input --| SHDN IN-|-- Channel 1 Inverting Input --| GAIN BIAS|-- Gain Select and Bias Voltage --| VDD OUT|-- Channel 2 Output --| GND IN+|-- Channel 2 Non-Inverting Input --| SHDN IN-|-- Channel 2 Inverting Input |___________| ```

Functional Features

• High efficiency with low quiescent current consumption
• Wide supply voltage range allows for versatile applications
• Thermal and short-circuit protection for reliable operation
• Low distortion and noise for high-quality audio reproduction
• Shutdown mode for power-saving when not in use

Advantages and Disadvantages

Advantages: - Compact package size enables space-constrained designs - High output power for driving a wide range of speakers - Low power consumption extends battery life in portable devices

Disadvantages: - Limited number of channels (2) may not be suitable for multi-channel audio systems - Requires external components for proper operation and filtering

Working Principles

The MAX975EUA is a class AB stereo audio amplifier that utilizes a bridge-tied load (BTL) configuration. It operates by amplifying the input audio signals received at the non-inverting and inverting inputs of each channel. The amplified signals are then combined to drive the respective speaker outputs.

Detailed Application Field Plans

The MAX975EUA finds applications in various audio-related fields, including but not limited to:

1. Portable audio devices: Provides high-quality audio amplification for smartphones, tablets, and portable media players.
2. Home entertainment systems: Suitable for compact audio amplification in soundbars, multimedia speakers, and mini hi-fi systems.
3. Automotive audio systems: Enables efficient amplification for car audio head units, amplifiers, and infotainment systems.
4. Computer peripherals: Ideal for USB-powered speakers, docking stations, and multimedia monitors.

Detailed and Complete Alternative Models

1. TPA3116D2: A 50W stereo audio amplifier with integrated volume control and advanced protection features.
2. LM386: A low-power audio amplifier with adjustable gain and versatile supply voltage range.
3. STA540: A dual/quad power amplifier with built-in thermal and short-circuit protection.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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