LM4867MT/NOPB

Product Overview

• Category: Audio Amplifier
• Use: LM4867MT/NOPB is a stereo audio amplifier designed for portable applications such as mobile phones, tablets, and portable media players.
• Characteristics: It provides high-quality audio amplification with low power consumption, making it suitable for battery-powered devices. The amplifier operates on a single supply voltage and offers a wide range of output power options.
• Package: LM4867MT/NOPB comes in a small outline package (SOP) with 16 pins.
• Essence: The essence of LM4867MT/NOPB lies in its ability to deliver clear and powerful audio output while consuming minimal power.
• Packaging/Quantity: LM4867MT/NOPB is typically sold in reels containing 2500 units.

Specifications

• Supply Voltage: 2.7V - 5.5V
• Output Power: Up to 1.1W per channel into 8Ω load at 5V supply
• Total Harmonic Distortion (THD): 0.1% (typical)
• Signal-to-Noise Ratio (SNR): 95dB (typical)
• Shutdown Current: 0.01μA (typical)

Pin Configuration

The LM4867MT/NOPB has the following pin configuration:

Pin 1: Left Channel Input Pin 2: Right Channel Input Pin 3: Bypass Capacitor Pin 4: Gain Select Pin 5: Shutdown Pin 6: Right Channel Output Pin 7: Ground Pin 8: Right Channel Output Pin 9: Left Channel Output Pin 10: VDD Pin 11: Left Channel Output Pin 12: Right Channel Output Pin 13: Ground Pin 14: Right Channel Output Pin 15: Left Channel Output Pin 16: VDD

Functional Features

• High-quality audio amplification with low power consumption.
• Single supply voltage operation for easy integration into portable devices.
• Wide range of output power options to suit different applications.
• Built-in shutdown mode for power-saving when not in use.
• Thermal shutdown protection to prevent overheating.

Advantages and Disadvantages

Advantages: - Provides clear and powerful audio output. - Low power consumption, suitable for battery-powered devices. - Compact package size for space-constrained designs. - Wide range of output power options for flexibility.

Disadvantages: - Limited output power compared to higher wattage amplifiers. - Requires external components for proper operation. - May require additional circuitry for advanced features like volume control.

Working Principles

The LM4867MT/NOPB is a class AB stereo audio amplifier. It amplifies the audio signal received from the input channels and delivers it to the corresponding output channels. The amplifier operates on a single supply voltage and uses internal circuitry to provide high-quality audio amplification while minimizing power consumption.

Detailed Application Field Plans

The LM4867MT/NOPB is commonly used in various portable audio devices such as:

1. Mobile phones
2. Tablets
3. Portable media players
4. Bluetooth speakers
5. Headphones

Its compact size, low power consumption, and high-quality audio output make it an ideal choice for these applications.

Detailed and Complete Alternative Models

1. TPA3116D2: A class D audio amplifier with higher output power and efficiency.
2. MAX98357A: A digital audio amplifier with integrated digital-to-analog converter (DAC).
3. TDA7498E: A class D audio amplifier with dual-channel output and high power capability.

These alternative models offer different features and specifications, allowing designers to choose the most suitable amplifier for their specific requirements.

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