MAX985ESA+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Audio Amplifier
• Characteristics: Low Noise, High Output Power
• Package: 8-Pin SOIC (Small Outline Integrated Circuit)
• Essence: Amplification of audio signals
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Quiescent Current: 3.5mA
• Output Power: 1.2W
• Total Harmonic Distortion (THD): 0.1%
• Signal-to-Noise Ratio (SNR): 90dB
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX985ESA+T IC has the following pin configuration:

1. VDD: Positive power supply
2. GND: Ground reference
3. IN+: Non-inverting input
4. IN-: Inverting input
5. SHDN: Shutdown control
6. OUT: Amplified audio output
7. BYP: Bypass capacitor connection
8. VREF: Reference voltage

Functional Features

• Low noise amplification of audio signals
• High output power for driving speakers
• Shutdown control for power saving
• Bypass capacitor connection for improved stability
• Reference voltage for precise signal amplification

Advantages and Disadvantages

Advantages: - Low noise amplification ensures high-quality audio output - High output power allows for driving a wide range of speakers - Shutdown control feature helps in power-saving applications - Bypass capacitor connection improves stability and reduces noise

Disadvantages: - Limited output power compared to higher wattage amplifiers - Requires external components for complete audio system integration

Working Principles

The MAX985ESA+T is an audio amplifier IC that operates on a supply voltage range of 2.7V to 5.5V. It amplifies audio signals with low noise and high output power, making it suitable for various audio applications. The IC utilizes a differential input stage to minimize noise and distortion. It also incorporates a shutdown control feature, allowing the user to turn off the amplifier when not in use, thus conserving power. The bypass capacitor connection enhances stability by reducing noise and improving frequency response.

Detailed Application Field Plans

The MAX985ESA+T is commonly used in the following applications:

1. Portable Audio Devices: The low power consumption and small package size make it ideal for portable audio players, smartphones, and tablets.
2. Automotive Audio Systems: The IC's wide operating temperature range and high output power make it suitable for automotive audio amplification.
3. Home Entertainment Systems: The low noise and high-quality audio output make it suitable for use in home theater systems and multimedia speakers.
4. Industrial Audio Equipment: The IC can be used in industrial audio equipment such as public address systems and intercoms.

Detailed and Complete Alternative Models

1. MAX9860: Similar audio amplifier IC with higher output power and additional features like integrated volume control.
2. MAX97220: Low-power audio amplifier IC with similar characteristics but optimized for battery-powered applications.
3. TPA3116D2: Class-D audio amplifier IC with higher efficiency and power output, suitable for high-performance audio systems.

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