MAX4474EUA

Product Overview

• Category: Integrated Circuit (IC)
• Use: Amplifier
• Characteristics: Low-noise, low-distortion, rail-to-rail output, unity-gain stable
• Package: 8-pin µMAX®
• Essence: High-performance audio amplifier
• Packaging/Quantity: Tape and Reel (3000 units per reel)

Specifications

• Supply Voltage: ±2.5V to ±6V
• Input Offset Voltage: 1mV (maximum)
• Input Bias Current: 10nA (maximum)
• Gain Bandwidth Product: 3MHz (typical)
• Slew Rate: 1.6V/µs (typical)
• Quiescent Current: 1.7mA (typical)
• Output Current: 60mA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX4474EUA has the following pin configuration:

```

---

| | --| IN- OUT+ |-- Pin 1: Non-Inverting Input --| IN+ VCC |-- Pin 2: Inverting Input --| GND NC |-- Pin 3: Ground --| NC OUT- |-- Pin 4: Output --| VEE NC |-- Pin 5: Negative Supply Voltage --| NC NC |-- Pin 6: Not Connected --| NC NC |-- Pin 7: Not Connected --| NC NC |-- Pin 8: Not Connected |___________| ```

Functional Features

• Low noise and distortion for high-quality audio amplification.
• Rail-to-rail output allows maximum utilization of the supply voltage range.
• Unity-gain stable, ensuring stability even at high frequencies.
• Wide operating voltage range for flexibility in various applications.
• Low quiescent current for power efficiency.

Advantages

• High-performance audio amplification with low noise and distortion.
• Rail-to-rail output enables maximum signal swing.
• Stable operation at unity gain and high frequencies.
• Versatile operating voltage range.
• Power-efficient design.

Disadvantages

• Limited output current compared to some other amplifier models.
• Not suitable for applications requiring very high power amplification.

Working Principles

The MAX4474EUA is a high-performance audio amplifier designed to amplify low-level audio signals with minimal noise and distortion. It operates on a wide range of supply voltages, allowing it to be used in various audio applications. The rail-to-rail output ensures that the amplified signal can swing close to the supply voltage rails, maximizing the dynamic range.

The amplifier is unity-gain stable, meaning it can be used in applications where the gain is set to 1 without the need for additional compensation circuitry. This stability extends to high frequencies, making it suitable for audio amplification across a wide range of frequencies.

The low quiescent current of the MAX4474EUA ensures power efficiency, making it suitable for battery-powered devices or applications where power consumption needs to be minimized.

Detailed Application Field Plans

The MAX4474EUA can be used in various audio applications, including:

1. Portable audio devices: Provides high-quality audio amplification for portable music players, smartphones, and tablets.
2. Headphone amplifiers: Enhances the audio output of headphones, delivering clear and powerful sound.
3. Audio mixers: Amplifies audio signals in mixing consoles, ensuring accurate reproduction of multiple audio sources.
4. Home theater systems: Amplifies audio signals for speakers, enhancing the overall audio experience.
5. Automotive audio systems: Provides amplification for car audio speakers, delivering high-quality sound in vehicles.

Detailed and Complete Alternative Models

1. LM386: Low voltage audio power amplifier with similar characteristics to the MAX4474EUA.
2. TPA3116D2: Class-D audio amplifier with higher output power capabilities.
3. AD823: Precision, low-power FET input operational amplifier suitable for audio applications.

These alternative models offer different features and performance specifications, allowing users to choose the most suitable amplifier for their specific requirements.

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