MAX971ESA

Product Overview

• Category: Integrated Circuit (IC)
• Use: Audio Amplifier
• Characteristics:
  • Small package size
  • Low power consumption
  • High efficiency
  • Wide input voltage range
• Package: SOIC-8
• Essence: Single-channel audio amplifier
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 4.5V to 28V
• Output Power: 1.2W
• Total Harmonic Distortion (THD): 0.1%
• Efficiency: 87%
• Shutdown Current: 0.01μA
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX971ESA 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) --| NC FB |-- Pin 4: NC (No Connection) --| NC NC |-- Pin 5: NC (No Connection) --| NC NC |-- Pin 6: NC (No Connection) --| NC NC |-- Pin 7: NC (No Connection) --| NC NC |-- Pin 8: NC (No Connection) |___________| ```

Functional Features

• Single-channel audio amplifier with high efficiency
• Low power consumption in shutdown mode
• Wide input voltage range allows for versatile applications
• Built-in thermal and short-circuit protection
• Excellent audio quality with low distortion

Advantages and Disadvantages

Advantages: - Small package size enables compact designs - High efficiency results in less power dissipation - Wide input voltage range allows for flexibility in power supply options

Disadvantages: - Limited output power of 1.2W may not be suitable for high-power audio applications - No built-in volume control or equalization features

Working Principles

The MAX971ESA is a class AB audio amplifier that amplifies the input audio signal to a higher power level suitable for driving speakers. It operates by modulating the input signal using a pair of complementary transistors, ensuring low distortion and high fidelity audio reproduction. The shutdown control pin allows for power-saving operation when the amplifier is not in use.

Detailed Application Field Plans

The MAX971ESA is commonly used in various audio applications, including:

1. Portable audio devices: MP3 players, smartphones, tablets
2. Personal computers and laptops
3. Home audio systems: Mini Hi-Fi systems, multimedia speakers
4. Automotive audio systems: Car stereos, amplifiers
5. Public address systems: Megaphones, portable PA systems

Detailed and Complete Alternative Models

1. TPA3116D2 - Texas Instruments
2. LM386 - Texas Instruments
3. STA540 - STMicroelectronics
4. TDA7297 - STMicroelectronics
5. PAM8403 - Diodes Incorporated

These alternative models offer similar functionality and can be considered as substitutes for the MAX971ESA in various audio amplifier applications.

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