MAX9737ETG+

Product Overview

• Category: Integrated Circuit (IC)
• Use: Audio Amplifier
• Characteristics: High efficiency, small package size, low noise
• Package: 24-pin TQFN package
• Essence: MAX9737ETG+ is a high-efficiency Class D audio power amplifier with an integrated stereo DirectDrive headphone amplifier.
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Power Supply Voltage: 2.7V to 5.5V
• Output Power: 3.2W at 3Ω, 10% THD+N
• Headphone Output Power: 40mW at 32Ω, 1% THD+N
• Efficiency: Up to 88%
• Shutdown Current: <1µA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

• Pin 1: INL- (Left Channel Input Negative)
• Pin 2: INL+ (Left Channel Input Positive)
• Pin 3: PGND (Power Ground)
• Pin 4: OUTL (Left Channel Output)
• Pin 5: VDD (Power Supply)
• Pin 6: OUTR (Right Channel Output)
• Pin 7: PGND (Power Ground)
• Pin 8: INR+ (Right Channel Input Positive)
• Pin 9: INR- (Right Channel Input Negative)
• Pin 10: SHDN (Shutdown)
• Pin 11: HPL- (Left Headphone Negative)
• Pin 12: HPL+ (Left Headphone Positive)
• Pin 13: HPR+ (Right Headphone Positive)
• Pin 14: HPR- (Right Headphone Negative)
• Pin 15: BST (Bootstrap)
• Pin 16: PVDD (Power Supply for the Headphone Amplifier)

Functional Features

• Integrated stereo DirectDrive headphone amplifier
• Low quiescent current
• Short-circuit and thermal protection
• Click-and-pop suppression
• I2C control interface for advanced features

Advantages and Disadvantages

Advantages

• High efficiency
• Small package size
• Low noise
• Integrated headphone amplifier
• Advanced protection features

Disadvantages

• Limited output power compared to some larger amplifiers
• Requires careful PCB layout for optimal performance

Working Principles

The MAX9737ETG+ operates as a Class D audio power amplifier, utilizing pulse-width modulation (PWM) to achieve high efficiency. The integrated DirectDrive headphone amplifier provides a seamless transition between speaker and headphone playback.

Detailed Application Field Plans

The MAX9737ETG+ is ideal for portable and battery-powered audio applications, including smartphones, tablets, portable speakers, and gaming devices. Its high efficiency and integrated features make it well-suited for space-constrained designs.

Detailed and Complete Alternative Models

• MAX98390
• TPA2012
• TAS2770
• LM4863

In conclusion, the MAX9737ETG+ is a versatile audio amplifier IC with integrated headphone amplifier, offering high efficiency and advanced features suitable for various portable audio applications.

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