MAX989ESA-T

Product Overview

• Category: Integrated Circuits (ICs)
• Use: Audio Amplifiers
• Characteristics:
  • Low Noise
  • High Output Power
  • Wide Supply Voltage Range
• Package: SOIC-8
• Essence: This product is an audio amplifier IC designed for high-quality audio applications.
• Packaging/Quantity: Tape & Reel, 2500 pieces per reel

Specifications

• Supply Voltage: 2.7V to 5.5V
• Output Power: 1.4W
• Total Harmonic Distortion (THD): 0.01%
• Operating Temperature Range: -40°C to +85°C
• Input Impedance: 100 kΩ
• Output Impedance: 8 Ω

Pin Configuration

The MAX989ESA-T has a total of 8 pins arranged as follows:

```

---

| | --| VDD OUT |-- Pin 1: VDD - Power Supply --| GND IN- |-- Pin 2: GND - Ground --| SHDN IN+ |-- Pin 3: SHDN - Shutdown Control --| BIAS FB |-- Pin 4: BIAS - Bias Input --| NC NC |-- Pin 5: Not Connected --| NC NC |-- Pin 6: Not Connected --| OUT GND |-- Pin 7: OUT - Output --| VDD GND |-- Pin 8: VDD - Ground |___________| ```

Functional Features

• Low noise and distortion for high-quality audio reproduction
• Wide supply voltage range allows flexibility in power source selection
• Shutdown control for power-saving mode
• Bias input for adjusting the amplifier's operating point

Advantages and Disadvantages

Advantages: - High output power capability - Low distortion and noise levels - Wide supply voltage range for versatile applications

Disadvantages: - Limited number of pins for additional functionalities - Requires external components for proper operation

Working Principles

The MAX989ESA-T is a class AB audio amplifier IC that amplifies low-level audio signals to a higher power level suitable for driving speakers or headphones. It operates by receiving an audio input signal through the IN+ pin, which is then amplified and delivered to the OUT pin. The BIAS pin allows fine-tuning of the amplifier's operating point, ensuring optimal performance.

Detailed Application Field Plans

The MAX989ESA-T is commonly used in various audio applications, including:

1. Portable audio devices such as smartphones, tablets, and MP3 players
2. Home audio systems and multimedia speakers
3. Automotive audio systems
4. Headphone amplifiers
5. Professional audio equipment

Detailed and Complete Alternative Models

1. MAX9700 - 20W Stereo Class D Audio Power Amplifier
2. LM386 - Low Voltage Audio Power Amplifier
3. TPA3116D2 - 50W Stereo Class D Audio Amplifier

These alternative models offer similar functionality and can be considered as substitutes for the MAX989ESA-T depending on specific requirements and design constraints.

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