MAX989ESA+ - English Editing Encyclopedia Entry

Product Overview

• Category: Integrated Circuit (IC)
• Use: Audio Amplifier
• Characteristics: High-performance, low-power, single-supply audio amplifier
• Package: SOIC-8
• Essence: MAX989ESA+ is a versatile audio amplifier designed for various applications requiring high-quality audio amplification.
• Packaging/Quantity: Available in tape and reel packaging with 2500 units per reel.

Specifications

• Supply Voltage: 2.7V to 5.5V
• Output Power: Up to 1W
• Total Harmonic Distortion + Noise (THD+N): 0.01% (typical)
• Input Impedance: 100 kΩ
• Operating Temperature Range: -40°C to +85°C
• Gain: Adjustable from 6dB to 30dB

Pin Configuration

The MAX989ESA+ has the following pin configuration:

```

---

| | --| VDD OUT |-- Pin 1: Supply Voltage (VDD) --| GND IN- |-- Pin 2: Ground (GND) --| SHDN IN+ |-- Pin 3: Shutdown Control (SHDN) --| BIAS FB |-- Pin 4: Bias Input (BIAS) |___________| ```

Functional Features

• Low-power consumption makes it suitable for battery-powered devices.
• Single-supply operation simplifies circuit design.
• Adjustable gain allows flexibility in audio amplification.
• Shutdown control feature enables power-saving mode when not in use.
• Excellent audio quality with low distortion and noise.

Advantages

• Versatile audio amplifier suitable for various applications.
• High-performance characteristics ensure superior audio quality.
• Low-power consumption extends battery life.
• Compact SOIC-8 package allows for space-efficient designs.
• Adjustable gain provides flexibility in audio amplification.

Disadvantages

• Limited output power compared to higher wattage amplifiers.
• Requires external components for a complete audio system.
• Not suitable for high-power audio applications.

Working Principles

The MAX989ESA+ is an audio amplifier that operates on a single supply voltage. It utilizes internal circuitry to amplify the input audio signal and provide a clean, amplified output. The gain of the amplifier can be adjusted using external components, allowing for customization based on specific application requirements. The shutdown control feature enables the amplifier to enter a low-power mode when not in use, conserving energy.

Application Field Plans

The MAX989ESA+ is widely used in various audio-related applications, including:

1. Portable audio devices: MP3 players, smartphones, tablets
2. Headphone amplifiers
3. Audio systems for automotive applications
4. Home audio equipment: speakers, soundbars
5. Communication devices: intercoms, two-way radios

Alternative Models

For those seeking alternative options, the following models are worth considering:

1. MAX97220A - Low-power stereo headphone amplifier with integrated volume control.
2. LM386 - Low-voltage audio power amplifier with adjustable gain.
3. TPA3116D2 - Class D audio amplifier with high efficiency and wide input voltage range.

These alternatives offer different features and specifications, catering to diverse application requirements.

In conclusion, the MAX989ESA+ is a versatile audio amplifier that offers high-performance audio amplification in a compact package. Its low-power consumption, adjustable gain, and shutdown control make it suitable for a wide range of applications. However, it has limitations in terms of output power and may require additional components for a complete audio system.