MAX982ESA

Product Overview

• Category: Integrated Circuit (IC)
• Use: Audio Amplifier
• Characteristics: Low Noise, High Output Power
• Package: SOIC-8
• Essence: Single-Supply, Rail-to-Rail Operational Amplifier
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Input Voltage Range: -0.1V to VDD+0.1V
• Output Voltage Swing: Rail-to-Rail
• Gain Bandwidth Product: 3MHz
• Quiescent Current: 500µA
• Shutdown Current: 0.01µA
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX982ESA IC has a total of 8 pins arranged as follows:

```

---

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

Functional Features

• Low noise amplifier suitable for audio applications
• Rail-to-rail output swing allows maximum utilization of the supply voltage range
• Single-supply operation simplifies circuit design
• Shutdown mode for power-saving when not in use
• Wide operating temperature range for versatile applications

Advantages and Disadvantages

Advantages: - Low noise performance ensures high-quality audio output - Rail-to-rail output swing provides maximum signal range - Single-supply operation simplifies circuit design and reduces component count

Disadvantages: - Limited gain bandwidth product may not be suitable for high-frequency applications - Shutdown mode may introduce additional complexity in control circuitry

Working Principles

The MAX982ESA is a single-supply, rail-to-rail operational amplifier designed for audio amplification. It operates from a supply voltage range of 2.7V to 5.5V, making it suitable for portable devices and low-power applications. The amplifier has low noise characteristics, ensuring high-fidelity audio reproduction.

The rail-to-rail output swing allows the amplifier to utilize the full supply voltage range, maximizing the dynamic range of the audio signal. This feature is particularly useful in battery-powered devices where power efficiency is crucial.

The IC also includes a shutdown mode, which reduces the quiescent current to an extremely low level when the amplifier is not in use. This helps conserve power and prolong battery life.

Detailed Application Field Plans

The MAX982ESA is commonly used in various audio applications, including:

1. Portable Audio Devices: MP3 players, smartphones, and tablets benefit from the low power consumption and high-quality audio amplification provided by the MAX982ESA.
2. Headphone Amplifiers: The rail-to-rail output swing and low noise characteristics make this IC suitable for driving headphones with excellent audio fidelity.
3. Audio Signal Processing: The amplifier can be used in audio mixers, equalizers, and other audio processing equipment to amplify and shape signals.

Detailed and Complete Alternative Models

1. MAX981ESA: Similar to MAX982ESA but with a higher gain bandwidth product of 10MHz.
2. MAX983ESA: Rail-to-rail operational amplifier with integrated volume control for simplified audio system design.
3. MAX984ESA: Dual-channel audio amplifier with low noise and rail-to-rail output swing.

These alternative models offer different features and specifications, allowing designers to choose the most suitable option for their specific application requirements.

Word count: 535 words