MAX98355AEWL+T

Product Overview

• Category: Audio Amplifier
• Use: The MAX98355AEWL+T is a mono Class D audio amplifier designed for portable devices such as smartphones, tablets, and portable media players. It provides high-quality audio amplification for small speakers.
• Characteristics: The MAX98355AEWL+T offers low power consumption, high efficiency, and excellent audio performance. It is compact in size and can be easily integrated into portable electronic devices.
• Package: The MAX98355AEWL+T comes in a small WLP package, which stands for Wafer-Level Package. This package type allows for a smaller footprint and improved thermal performance.
• Essence: The essence of the MAX98355AEWL+T lies in its ability to deliver high-quality audio amplification in a compact and efficient package.

Specifications

• Power Supply Voltage: 2.5V to 5.5V
• Output Power: Up to 3.2W
• Efficiency: Up to 88%
• Signal-to-Noise Ratio (SNR): >100dB
• Total Harmonic Distortion (THD): <0.1%
• Shutdown Current: <1µA
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX98355AEWL+T has a total of 16 pins. Here is the detailed pin configuration:

1. VDD: Power supply voltage input
2. GND: Ground connection
3. SD: Shutdown control input
4. BCLK: Bit clock input
5. LRCLK: Left/right clock input
6. DIN: Digital audio data input
7. DOUT: Digital audio data output
8. AGND: Analog ground connection
9. VDDA: Analog power supply voltage input
10. OUTP: Positive speaker output
11. OUTN: Negative speaker output
12. BST: Boost voltage input
13. FB: Feedback input
14. PVDD: Power supply voltage for the boost converter
15. PGND: Ground connection for the boost converter
16. NC: No connection

Functional Features

• Integrated Boost Converter: The MAX98355AEWL+T includes an integrated boost converter, which allows it to efficiently drive small speakers with high output power.
• Digital Audio Interface: It supports a standard I2S digital audio interface, making it compatible with a wide range of audio sources.
• Automatic Gain Control (AGC): The amplifier features an AGC circuit that adjusts the gain based on the input signal level, ensuring consistent audio quality even with varying input levels.
• Thermal and Overcurrent Protection: The MAX98355AEWL+T incorporates thermal and overcurrent protection mechanisms to prevent damage to the device and ensure safe operation.

Advantages and Disadvantages

Advantages: - High-quality audio amplification - Low power consumption - Compact size - Integrated boost converter - Wide operating voltage range

Disadvantages: - Limited output power compared to larger amplifiers - Not suitable for driving large speakers

Working Principles

The MAX98355AEWL+T is a Class D audio amplifier, which uses pulse-width modulation (PWM) to amplify the audio signal. It converts the digital audio data into a high-frequency PWM signal, which is then filtered and amplified to drive the connected speaker. The integrated boost converter provides the necessary voltage to achieve high output power while maintaining efficiency.

Application Field Plans

The MAX98355AEWL+T is primarily designed for use in portable electronic devices, including: - Smartphones - Tablets - Portable media players - Bluetooth speakers - Wearable devices

Alternative Models

Here are some alternative models that offer similar functionality: - MAX98356AEWL+T - TPA6211A1DGNR - PAM8403

These alternatives can be considered based on specific requirements and design constraints.

In conclusion, the MAX98355AEWL+T is a compact and efficient audio amplifier designed for portable devices. It offers high-quality audio amplification, low power consumption, and integrated features such as a boost converter and AGC circuit. While it may have limitations in terms of output power, it is well-suited for driving small speakers in various portable applications.