LM4889MM/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Audio Amplifier
• Characteristics: High-performance, low-power stereo audio amplifier
• Package: Miniature 8-pin MSOP package
• Essence: Amplifies audio signals for various applications
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Power Supply Voltage: 2.5V to 5.5V
• Output Power: 1.1W per channel into 8Ω load at 5V supply
• Total Harmonic Distortion + Noise (THD+N): 0.1% at 1kHz, 1.2W output power
• Shutdown Current: 0.01μA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM4889MM/NOPB IC has the following pin configuration:

```

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| | --| VDD VSS|-- Power Supply Pins --| INL INR|-- Audio Input Pins --| SHDN GND|-- Shutdown and Ground Pins --| OUTL OUTR|-- Audio Output Pins |___________| ```

Functional Features

• Low quiescent current consumption
• Wide operating voltage range
• Thermal shutdown protection
• Short-circuit and thermal overload protection
• Pop and click suppression circuitry
• Excellent power supply rejection ratio (PSRR)

Advantages

• High-quality audio amplification with low distortion
• Compact and space-saving MSOP package
• Suitable for battery-powered devices due to low power consumption
• Robust protection features ensure device longevity
• Minimal noise and interference during operation

Disadvantages

• Limited output power compared to higher wattage amplifiers
• Requires external components for proper operation
• Not suitable for high-power audio applications

Working Principles

The LM4889MM/NOPB is a stereo audio amplifier that operates by amplifying low-level audio signals from the input pins (INL and INR) using an internal amplification circuit. The amplified audio signals are then delivered to the respective output pins (OUTL and OUTR), which can be connected to speakers or headphones.

The IC is powered by a supply voltage within the specified range, and it consumes minimal current during operation. It incorporates various protection mechanisms such as thermal shutdown, short-circuit, and thermal overload protection to ensure safe and reliable operation.

Detailed Application Field Plans

The LM4889MM/NOPB is commonly used in portable electronic devices such as smartphones, tablets, laptops, portable media players, and Bluetooth speakers. It is also suitable for automotive audio systems, gaming consoles, and other consumer electronics where compact size and low power consumption are essential.

Alternative Models

1. TPA3116D2: High-performance Class D audio amplifier with higher output power.
2. MAX9744: Integrated audio amplifier with advanced digital signal processing capabilities.
3. TDA7265: Dual bridge audio amplifier with higher output power and additional features.

These alternative models offer different specifications and features, providing options based on specific application requirements.

In conclusion, the LM4889MM/NOPB is a versatile audio amplifier IC that offers high-quality audio amplification in a compact package. Its low power consumption, protection features, and wide operating voltage range make it suitable for various portable and consumer electronic applications. However, its limited output power may restrict its use in high-power audio applications.