MAX9750CETI+C2U

Product Overview

• Category: Integrated Circuit (IC)
• Use: Audio Amplifier
• Characteristics: High-performance, Class D amplifier
• Package: 28-pin TQFN package
• Essence: Power-efficient audio amplification
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

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

Pin Configuration

The MAX9750CETI+C2U has a total of 28 pins. The pin configuration is as follows:

1. SDN (Shutdown) - Active-low shutdown input
2. GND (Ground) - Ground reference
3. INL (Left Channel Input) - Left channel audio input
4. INR (Right Channel Input) - Right channel audio input
5. VDD (Power Supply) - Positive power supply voltage
6. PVDD (Power Supply) - Positive power supply voltage for the output stage
7. BST (Bootstrap) - Bootstrap capacitor connection for high-side MOSFET driver
8. PGND (Power Ground) - Power ground reference
9. OUTL (Left Channel Output) - Left channel audio output
10. OUTR (Right Channel Output) - Right channel audio output
11. AGND (Analog Ground) - Analog ground reference
12. FB (Feedback) - Feedback pin for controlling the output stage

...

Functional Features

• High-efficiency Class D amplifier design
• Low total harmonic distortion and noise
• Wide supply voltage range for flexibility in various applications
• Shutdown mode for power-saving when not in use
• Thermal and short-circuit protection for reliable operation
• Integrated bootstrap capacitor for simplified circuit design

Advantages and Disadvantages

Advantages: - High efficiency results in less power consumption and reduced heat dissipation. - Low distortion and noise ensure high-quality audio reproduction. - Wide supply voltage range allows for versatile application scenarios. - Shutdown mode helps conserve power when the amplifier is not in use. - Integrated bootstrap capacitor simplifies circuit design.

Disadvantages: - Limited output power compared to some higher-powered amplifiers. - May require additional external components for certain applications. - Higher cost compared to lower-end audio amplifiers.

Working Principles

The MAX9750CETI+C2U is a Class D audio amplifier that utilizes pulse-width modulation (PWM) techniques to achieve high efficiency. It converts the input audio signal into a series of high-frequency pulses, which are then amplified by the power stage. The amplified pulses are filtered and converted back into an analog audio signal, resulting in high-quality sound reproduction.

Detailed Application Field Plans

The MAX9750CETI+C2U is suitable for a wide range of audio applications, including:

1. Portable Bluetooth speakers
2. Home theater systems
3. Car audio systems
4. Multimedia devices
5. Gaming consoles
6. Professional audio equipment

Detailed and Complete Alternative Models

1. TPA3116D2: 50W Stereo Class D Audio Amplifier
2. LM3886: High-Performance 68W Audio Power Amplifier
3. TAS5630B: 300W PurePath™ Ultra-HD Analog-Input Class D Amplifier
4. STA540: 4x13W Dual/Quad Power Amplifier
5. TDA7498E: 160W+160W Dual BTL Class-D Audio Amplifier

These alternative models offer different power outputs, features, and price points to cater to various audio amplification requirements.

In conclusion, the MAX9750CETI+C2U is a high-performance Class D audio amplifier that offers efficient power amplification with low distortion and noise. Its wide range of applications and integrated features make it a versatile choice for audio amplification needs.