MAX9717AEUA+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Audio Amplifier
• Characteristics: High Efficiency, Low Noise, Small Package Size
• Package: 8-pin µMAX®
• Essence: Power Amplification for Audio Signals
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Output Power: 1.4W at 3Ω, 1% THD+N
• Efficiency: Up to 87%
• Shutdown Current: <1µA
• Quiescent Current: 1.6mA
• Gain: Fixed at 6dB
• Input Impedance: 32kΩ
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX9717AEUA+T features an 8-pin µMAX package with the following pin configuration:

1. SHDN (Shutdown): Logic input to enable/disable the amplifier.
2. GND (Ground): Ground reference for the amplifier.
3. IN- (Negative Input): Inverting input for the audio signal.
4. IN+ (Positive Input): Non-inverting input for the audio signal.
5. VDD (Supply Voltage): Positive supply voltage for the amplifier.
6. OUT (Output): Amplified audio output.
7. BYP (Bypass): Bypass capacitor connection for improved stability.
8. FB (Feedback): Feedback pin for gain control.

Functional Features

• High Efficiency: The MAX9717AEUA+T offers up to 87% efficiency, ensuring minimal power wastage.
• Low Noise: With a low quiescent current of 1.6mA, this amplifier minimizes background noise.
• Small Package Size: The 8-pin µMAX package allows for compact and space-saving designs.
• Fixed Gain: The amplifier has a fixed gain of 6dB, simplifying the design process.

Advantages and Disadvantages

Advantages: - High efficiency leads to longer battery life in portable devices. - Low noise ensures clear audio reproduction. - Small package size enables integration into compact designs. - Fixed gain simplifies circuit design.

Disadvantages: - Limited output power may not be suitable for high-power audio applications. - Fixed gain may not provide flexibility for different audio sources.

Working Principles

The MAX9717AEUA+T is a class AB audio amplifier that operates on a single supply voltage. It utilizes a bridge-tied load (BTL) configuration to amplify audio signals. The input audio signal is amplified by an internal operational amplifier and then fed to the BTL output stage. The BTL output stage drives the speaker or headphones connected to the OUT pin.

Detailed Application Field Plans

The MAX9717AEUA+T is commonly used in various portable audio devices, such as:

1. Mobile Phones: Enhances the audio output quality for multimedia applications.
2. Portable Media Players: Provides amplified audio output for music playback.
3. Tablets and Laptops: Improves the sound experience during video playback.
4. Bluetooth Speakers: Amplifies the audio signal wirelessly transmitted from a mobile device.

Detailed and Complete Alternative Models

1. MAX9718AETB+: Similar to MAX9717AEUA+T but with a higher output power of 2.8W at 3Ω.
2. MAX9720AETC+: Offers a shutdown feature and adjustable gain control.
3. MAX9744ETG+: Provides a higher output power of 20W at 4Ω and supports stereo operation.

These alternative models offer different features and specifications to cater to diverse application requirements.

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