MAX9704ETJ+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Audio Amplifier
• Characteristics: High-performance, low-power, stereo Class D audio amplifier
• Package: 32-pin TQFN (Thin Quad Flat No-Lead) package
• Essence: Provides high-quality audio amplification in a compact form factor
• Packaging/Quantity: Available in tape and reel packaging, quantity varies based on supplier

Specifications

• Power Supply Voltage Range: 2.7V to 5.5V
• Output Power: Up to 2.8W per channel into 4Ω load at 5V supply
• Efficiency: Greater than 90% at 1W output power
• Total Harmonic Distortion + Noise (THD+N): Less than 0.1% at 1W output power
• Signal-to-Noise Ratio (SNR): Greater than 100dB
• Shutdown Current: Less than 1µA
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX9704ETJ+T features a 32-pin TQFN package with the following pin configuration:

1. SDN (Shutdown)
2. GND (Ground)
3. INL- (Left Channel Negative Input)
4. INL+ (Left Channel Positive Input)
5. VDD (Power Supply)
6. INR+ (Right Channel Positive Input)
7. INR- (Right Channel Negative Input)
8. PGND (Power Ground)
9. BST (Bootstrap)
10. PVDD (Power Supply)
11. OUTL- (Left Channel Negative Output)
12. OUTL+ (Left Channel Positive Output)
13. AGND (Analog Ground)
14. OUTR+ (Right Channel Positive Output)
15. OUTR- (Right Channel Negative Output)
16. VREF (Reference Voltage)
17. BYP (Bypass Capacitor)
18. FB (Feedback)
19. GAIN (Gain Setting)
20. MUTE (Mute Control)
21. SD (Shutdown Control)
22. BIAS (Bias Voltage)
23. PVDD (Power Supply)
24. PGND (Power Ground)
25. BST (Bootstrap)
26. INR- (Right Channel Negative Input)
27. INR+ (Right Channel Positive Input)
28. VDD (Power Supply)
29. INL+ (Left Channel Positive Input)
30. INL- (Left Channel Negative Input)
31. GND (Ground)
32. SDN (Shutdown)

Functional Features

• High-quality audio amplification with low power consumption
• Stereo Class D architecture for efficient operation
• Shutdown and mute control for power management
• Gain setting for adjusting the output volume
• Bypass capacitor for improved audio performance
• Bootstrap circuitry for enhanced efficiency
• Reference voltage for accurate signal processing

Advantages and Disadvantages

Advantages: - High-performance audio amplification - Low power consumption - Compact form factor - Efficient operation - Shutdown and mute control for power management

Disadvantages: - Limited output power compared to larger amplifiers - Requires external components for proper operation

Working Principles

The MAX9704ETJ+T is a stereo Class D audio amplifier that utilizes pulse-width modulation (PWM) to convert the input audio signal into a high-frequency square wave. This square wave is then filtered and amplified to produce the desired audio output. The amplifier operates in a switching mode, allowing for high efficiency and low power consumption.

Detailed Application Field Plans

The MAX9704ETJ+T is suitable for various applications, including:

1. Portable audio devices: Provides high-quality audio amplification for smartphones, tablets, and portable media players.
2. Automotive audio systems: Enhances the audio performance in car entertainment systems.
3. Home theater systems: Amplifies the audio signals in surround sound setups.
4. Gaming consoles: Improves the audio output of gaming consoles for an immersive gaming experience.
5. Personal computers: Enhances the audio quality of desktop and laptop computers.

Detailed and Complete Alternative Models

1. MAX9704ETJ+T: The specific model discussed in this entry.
2. MAX9704ETJ: Similar to MAX9704ETJ+T but without the tape and reel packaging.
3. MAX9704EUB+: 10-pin µMAX package variant with similar specifications.
4. MAX9704EVKIT: Evaluation kit for testing and prototyping purposes.

Note: There may be other alternative models available from different manufacturers. It is recommended to consult the respective datasheets for detailed information on alternative models.

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