MAX9718DEUB+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Audio Amplifier
• Characteristics: High Efficiency, Low Noise, Small Package Size
• Package: µMAX® (SOT23-5)
• Essence: Power Amplification
• Packaging/Quantity: Tape and Reel, 3000 pieces per reel

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Output Power: Up to 1.4W
• Efficiency: Up to 87%
• Total Harmonic Distortion + Noise (THD+N): 0.06% (typical)
• Shutdown Current: 0.01µA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX9718DEUB+T has a total of 5 pins arranged as follows:

```

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| | --| VDD OUT |-- Pin 1: VDD (Power Supply) --| GND IN- |-- Pin 2: GND (Ground) --| SHDN IN+ |-- Pin 3: SHDN (Shutdown Control) --| BIAS FB |-- Pin 4: BIAS (Bias Voltage) --| NC NC |-- Pin 5: Not Connected |___________| ```

Functional Features

• Single-Supply Operation
• Low Quiescent Current
• Short-Circuit and Thermal Protection
• Pop-and-Click Suppression
• Shutdown Control for Power Saving

Advantages and Disadvantages

Advantages: - High efficiency results in longer battery life - Low noise ensures high-quality audio output - Small package size allows for compact designs

Disadvantages: - Limited output power compared to larger amplifiers - Not suitable for high-power audio applications

Working Principles

The MAX9718DEUB+T is a single-supply audio amplifier IC designed to amplify low-power audio signals. It operates from a supply voltage range of 2.7V to 5.5V, making it suitable for portable devices powered by batteries.

The amplifier utilizes a Class D architecture, which offers high efficiency and low power dissipation. It converts the input audio signal into a pulse-width modulated (PWM) signal, which is then amplified using a power MOSFET output stage. This allows for efficient power transfer to the load while minimizing heat generation.

The device also incorporates various protection features such as short-circuit and thermal protection, ensuring safe operation even under adverse conditions. Additionally, pop-and-click suppression circuitry eliminates unwanted noise during power-on and power-off transitions.

Detailed Application Field Plans

The MAX9718DEUB+T is commonly used in various portable audio applications, including:

1. Mobile Phones: Enhancing the audio output quality of smartphones and feature phones.
2. Portable Media Players: Amplifying audio signals for better sound reproduction in MP3 players and handheld gaming devices.
3. Tablets and Laptops: Improving the audio performance of tablets and laptops for multimedia applications.
4. Bluetooth Speakers: Powering compact wireless speakers for improved audio playback.

Detailed and Complete Alternative Models

• MAX9717DEUB+T: Similar to MAX9718DEUB+T but with a different shutdown control configuration.
• MAX9719DEUB+T: Higher output power version of MAX9718DEUB+T, suitable for applications requiring more power.

Note: Please refer to the manufacturer's datasheets for detailed specifications and pin configurations of alternative models.

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