LM4895MM/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Amplifier

Characteristics: - Small size - Low power consumption - High efficiency - Wide voltage range - Excellent audio quality

Package: Miniature 8-pin MSOP package

Essence: The LM4895MM/NOPB is a compact audio amplifier IC designed for portable electronic devices such as smartphones, tablets, and portable media players.

Packaging/Quantity: Available in tape and reel packaging with 2500 units per reel.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Output Power: Up to 1.1W into 8Ω at 5V
• Total Harmonic Distortion + Noise (THD+N): 0.1% (typical)
• Shutdown Current: 0.01μA (typical)
• Quiescent Current: 4mA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM4895MM/NOPB features an 8-pin MSOP package with the following pin configuration:

1. SHUTDOWN - Shutdown control input
2. IN+ - Positive differential audio input
3. IN- - Negative differential audio input
4. BYPASS - Bypass capacitor connection
5. GND - Ground
6. VDD - Positive supply voltage
7. OUT- - Negative speaker output
8. OUT+ - Positive speaker output

Functional Features

• Low shutdown current for power-saving mode
• Thermal shutdown protection
• Short-circuit and thermal overload protection
• Pop and click suppression during power-up and shutdown
• External gain configuration option
• Differential inputs for noise rejection

Advantages and Disadvantages

Advantages: - Small size allows for compact device designs - Low power consumption prolongs battery life - High efficiency ensures optimal performance - Wide voltage range provides flexibility in power supply options - Excellent audio quality enhances user experience

Disadvantages: - Limited output power compared to larger amplifiers - Requires external gain configuration for specific applications

Working Principles

The LM4895MM/NOPB is a class AB audio amplifier that utilizes differential inputs to reject common-mode noise. It operates by amplifying the input audio signal and driving it through the speaker outputs. The shutdown control input allows for power-saving mode, reducing the quiescent current to a minimum.

Detailed Application Field Plans

The LM4895MM/NOPB is widely used in various portable electronic devices where space and power consumption are critical factors. Some of its application fields include:

1. Smartphones
2. Tablets
3. Portable media players
4. Bluetooth speakers
5. Wearable devices

Detailed and Complete Alternative Models

1. LM4863M/NOPB - 2.2W Audio Power Amplifier
2. LM386N-1/NOPB - Low Voltage Audio Power Amplifier
3. TPA3110D2PWP - Stereo Class D Audio Power Amplifier

These alternative models offer different power outputs and features, providing options based on specific requirements.

In conclusion, the LM4895MM/NOPB is a compact audio amplifier IC designed for portable electronic devices. Its small size, low power consumption, and excellent audio quality make it an ideal choice for various applications. However, it has limited output power compared to larger amplifiers and requires external gain configuration for specific needs.