MAX97000EWA+T

Product Overview

• Category: Audio Amplifier
• Use: The MAX97000EWA+T is a mono Class D audio amplifier designed for portable devices such as smartphones, tablets, and portable media players.
• Characteristics: It offers high efficiency, low distortion, and low power consumption, making it ideal for battery-powered applications. The device operates from a single 2.7V to 5.5V supply voltage and delivers up to 1.4W of output power into an 8Ω load.
• Package: The MAX97000EWA+T comes in a tiny 9-bump WLP package, measuring only 1.42mm x 0.88mm.
• Essence: This audio amplifier provides a compact and efficient solution for driving small speakers in portable electronic devices.
• Packaging/Quantity: The MAX97000EWA+T is available in tape and reel packaging with a minimum order quantity of 3000 units.

Specifications

• Supply Voltage: 2.7V to 5.5V
• Output Power: Up to 1.4W into 8Ω load
• Efficiency: >90%
• Total Harmonic Distortion + Noise (THD+N): <0.1%
• Shutdown Current: <1µA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX97000EWA+T has the following pin configuration:

1. VDD: Power supply input
2. GND: Ground
3. SD: Shutdown control input
4. INP: Positive differential input
5. INN: Negative differential input
6. BST: Bootstrap capacitor connection
7. OUT: Speaker output
8. FB: Feedback input
9. PGND: Power ground

Functional Features

• Class D Amplification: The MAX97000EWA+T utilizes Class D amplification technology, which offers high efficiency and low power consumption.
• Differential Inputs: It accepts differential audio inputs, allowing for better noise rejection and improved audio quality.
• Shutdown Control: The device features a shutdown control input (SD) that allows for power-saving operation when the amplifier is not in use.
• Short-Circuit Protection: The MAX97000EWA+T includes built-in short-circuit protection to prevent damage to the device and connected speakers.

Advantages and Disadvantages

Advantages: - High efficiency - Low distortion - Low power consumption - Compact package size - Shutdown control for power-saving operation

Disadvantages: - Limited output power compared to larger audio amplifiers - Restricted to mono audio output

Working Principles

The MAX97000EWA+T operates on the principle of Class D amplification. It uses pulse-width modulation (PWM) to convert the 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 architecture ensures high efficiency by minimizing power dissipation in the output stage.

Detailed Application Field Plans

The MAX97000EWA+T is suitable for various portable electronic devices that require audio amplification. Some potential application fields include:

1. Smartphones and Tablets: Enhancing the audio output of mobile devices for better sound quality during media playback.
2. Portable Media Players: Providing improved audio performance for music and video playback on portable media players.
3. Bluetooth Speakers: Enabling compact and efficient audio amplification in wireless speakers.
4. Gaming Consoles: Enhancing the audio experience in handheld gaming consoles.

Detailed and Complete Alternative Models

1. MAX98357A: Stereo Class D audio amplifier with I2S input and integrated digital-to-analog converter (DAC).
2. TPA3116D2: High-performance Class D audio amplifier with stereo output and wide supply voltage range.
3. LM386: Low-voltage audio power amplifier with mono output, suitable for battery-powered applications.

These alternative models offer different features and specifications, providing options for various audio amplification requirements.

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