LM4995SDX/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Amplifier

Characteristics: - High-performance audio amplifier - Low distortion and noise - Wide supply voltage range - Small package size - Thermal shutdown protection

Package: SDIP (Shrink Dual In-Line Package)

Essence: The LM4995SDX/NOPB is a high-performance audio amplifier IC designed for various audio applications. It provides low distortion and noise, making it suitable for high-quality audio systems.

Packaging/Quantity: The LM4995SDX/NOPB is available in a SDIP package and is typically sold in reels of 2500 units.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Output Power: Up to 1.4W
• Total Harmonic Distortion (THD): <0.1%
• Signal-to-Noise Ratio (SNR): >90dB
• Shutdown Current: <1µA
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM4995SDX/NOPB has the following pin configuration:

```

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| | --| VDD GND|-- Power Supply Pins --| INP INN|-- Audio Input Pins --| SHDN OUT|-- Shutdown and Audio Output Pins |___________| ```

Functional Features

1. High-Quality Audio Amplification: The LM4995SDX/NOPB delivers high-quality audio amplification with low distortion and noise, ensuring excellent sound reproduction.

2. Wide Supply Voltage Range: With a supply voltage range of 2.7V to 5.5V, the LM4995SDX/NOPB can be used in a variety of applications, including portable devices and audio systems.

3. Thermal Shutdown Protection: The IC incorporates thermal shutdown protection, which prevents damage due to excessive heat by automatically shutting down the amplifier when the temperature exceeds a certain threshold.

Advantages and Disadvantages

Advantages: - High-performance audio amplification - Low distortion and noise - Wide supply voltage range - Small package size for space-constrained designs - Thermal shutdown protection ensures safety

Disadvantages: - Limited output power compared to higher wattage amplifiers - Not suitable for high-power audio applications

Working Principles

The LM4995SDX/NOPB is a class AB audio amplifier that operates by amplifying the input audio signal using a combination of transistors and feedback circuitry. It utilizes a push-pull configuration to minimize distortion and improve efficiency. The amplifier receives the audio input signal, amplifies it, and delivers the amplified signal to the output pin.

Detailed Application Field Plans

The LM4995SDX/NOPB can be used in various audio applications, including but not limited to: 1. Portable audio devices such as smartphones, tablets, and MP3 players. 2. Headphone amplifiers for improved audio quality. 3. Home audio systems, including mini Hi-Fi systems and multimedia speakers. 4. Automotive audio systems for enhanced in-car entertainment.

Detailed and Complete Alternative Models

1. LM4863: Dual 2.2W Audio Amplifier
2. TPA3116D2: 50W Stereo Class D Audio Amplifier
3. MAX9744: 20W Stereo Class D Audio Power Amplifier
4. TDA7297: Dual Bridge Audio Amplifier

These alternative models offer different power outputs, features, and package options, providing flexibility for various audio amplifier requirements.

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