MAX9756ETX+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Audio amplifier
• Characteristics: High-performance, stereo Class D audio power amplifier
• Package: 36-pin TQFN (Thin Quad Flat No-Lead) package
• Essence: Amplifies audio signals for various applications
• Packaging/Quantity: Tape and reel packaging, 2500 units per reel

Specifications

• Supply Voltage Range: 4.5V to 14V
• Output Power: 20W per channel into 8Ω load at 10% THD+N
• Efficiency: Up to 87%
• Total Harmonic Distortion + Noise (THD+N): 0.03% at 1kHz, 1W output power
• Signal-to-Noise Ratio (SNR): 100dB
• Shutdown Current: <1µA
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX9756ETX+T has a total of 36 pins. The pin configuration is as follows:

1. SD (Shutdown)
2. GND (Ground)
3. INL- (Left Channel Negative Input)
4. INL+ (Left Channel Positive Input)
5. VDD (Positive Power Supply)
6. PVDD (Power Supply for the Power Stage)
7. BST (Bootstrap Capacitor Connection)
8. OUTL (Left Channel Output)
9. FB (Feedback)
10. PGND (Power Ground)
11. INR- (Right Channel Negative Input)
12. INR+ (Right Channel Positive Input)
13. MUTE (Mute Control)
14. BYP (Bypass Capacitor Connection)
15. NC (No Connection)
16. OUTR (Right Channel Output) 17-36. NC (No Connection)

Functional Features

• High-efficiency Class D operation
• Integrated protection features (thermal shutdown, overcurrent, undervoltage)
• Low quiescent current in shutdown mode
• Wide supply voltage range for flexibility
• Excellent audio performance with low distortion and high SNR
• Small package size for space-constrained applications

Advantages and Disadvantages

Advantages: - High power efficiency - Compact size - Integrated protection features ensure reliability - Wide supply voltage range allows for versatile applications - Excellent audio performance

Disadvantages: - Limited output power compared to some other amplifiers - Requires careful consideration of thermal management due to high efficiency

Working Principles

The MAX9756ETX+T is a stereo Class D audio power amplifier. It operates by using pulse-width modulation (PWM) to convert the incoming audio signal into a series of high-frequency pulses. These pulses are then amplified by the power stage and filtered to reconstruct the original audio waveform. The Class D design ensures high efficiency by minimizing power dissipation.

Detailed Application Field Plans

The MAX9756ETX+T can be used in various audio applications, including:

1. Portable speakers
2. Home theater systems
3. Automotive audio systems
4. Gaming consoles
5. Personal computers
6. Televisions
7. Soundbars
8. Musical instruments

Its compact size, high efficiency, and excellent audio performance make it suitable for both consumer and professional audio applications.

Detailed and Complete Alternative Models

1. TPA3116D2: Another stereo Class D audio amplifier with similar specifications and features.
2. TAS5630B: A high-performance Class D amplifier with advanced digital audio processing capabilities.
3. LM3886: A popular high-fidelity audio amplifier with a different operating principle (Class AB).

These alternative models offer different trade-offs in terms of power, features, and cost, providing options for various application requirements.

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