MAX972CUA+ - English Editing Encyclopedia Entry

Product Overview

• Category: Integrated Circuit (IC)
• Use: Audio Amplifier
• Characteristics: High-performance, low-power stereo audio amplifier
• Package: 8-pin SOIC (Small Outline Integrated Circuit)
• Essence: Provides amplification and control for audio signals
• Packaging/Quantity: Available in tape and reel packaging, with a quantity of 2500 units per reel

Specifications

• Supply Voltage: 2.7V to 5.5V
• Output Power: 150mW per channel into 16Ω load at 3.3V supply
• Total Harmonic Distortion + Noise: 0.1% (typical) at 150mW output power
• Shutdown Current: 0.01μA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX972CUA+ has the following pin configuration:

1. OUTL: Left Channel Output
2. GND: Ground
3. VDD: Positive Supply Voltage
4. SHDN: Shutdown Control Input
5. BYP: Bypass Capacitor Connection
6. INL: Left Channel Input
7. INR: Right Channel Input
8. OUTR: Right Channel Output

Functional Features

• Low quiescent current consumption
• Wide supply voltage range
• Thermal shutdown protection
• Short-circuit and thermal overload protection
• Excellent power supply rejection ratio (PSRR)
• Low total harmonic distortion (THD)

Advantages and Disadvantages

Advantages: - High-performance audio amplification - Low power consumption - Wide operating temperature range - Protection against short-circuits and thermal overload - Excellent power supply rejection

Disadvantages: - Limited output power compared to higher wattage amplifiers - Requires external bypass capacitor for optimal performance

Working Principles

The MAX972CUA+ is a stereo audio amplifier that operates by receiving audio input signals through the INL and INR pins. It amplifies these signals and outputs them through the OUTL and OUTR pins, respectively. The amplification process is controlled by the VDD pin, which supplies the necessary power for the amplifier to function.

The SHDN pin allows for shutdown control of the amplifier, reducing power consumption when not in use. The BYP pin is used to connect an external bypass capacitor, which helps improve stability and reduce noise in the audio signal.

Detailed Application Field Plans

The MAX972CUA+ is commonly used in various audio applications, including:

1. Portable audio devices (e.g., MP3 players, smartphones)
2. Headphone amplifiers
3. Personal computer audio systems
4. Multimedia speakers
5. Automotive audio systems

Its low power consumption, compact package, and high-performance characteristics make it suitable for these applications.

Detailed and Complete Alternative Models

1. MAX972CUA: Similar to MAX972CUA+, but without thermal shutdown protection.
2. MAX972CSE+: 16-pin SOIC package variant with additional features such as gain control and mute function.
3. MAX972ESA+: 8-pin SOIC package variant with extended temperature range (-40°C to +125°C).

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

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