LM4970SDX/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Audio Amplifier
• Characteristics: High-performance, low-distortion audio amplifier
• Package: SDIP (Shrink Dual Inline Package)
• Essence: The LM4970SDX/NOPB is a high-quality audio amplifier designed for various audio applications.
• Packaging/Quantity: Available in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

• Power Supply Voltage: ±2.5V to ±18V
• Output Power: 1.1W (per channel) into 8Ω load at ±12V supply voltage
• Total Harmonic Distortion + Noise: 0.01% (typical) at 1kHz, 1W output power
• Input Impedance: 20kΩ (typical)
• Shutdown Current: 0.6μA (typical)

Pin Configuration

The LM4970SDX/NOPB has a 14-pin SDIP package with the following pin configuration:

```

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| | --| V- V+ |-- --| IN- IN+ |-- --| GND OUT |-- --| SHDN BIAS|-- --| BYP NC |-- |___________| ```

Functional Features

• High-quality audio amplification with low distortion and noise
• Wide power supply voltage range for flexibility in various applications
• Shutdown mode for power-saving when not in use
• Internal thermal shutdown protection to prevent overheating
• External bypass capacitor for improved performance

Advantages

• High-performance audio amplification with low distortion ensures excellent sound quality.
• Wide power supply voltage range allows for versatile use in different audio systems.
• Shutdown mode helps conserve power when the amplifier is not in use.
• Thermal shutdown protection prevents damage due to excessive heat.
• External bypass capacitor enhances performance and stability.

Disadvantages

• The SDIP package may require additional space compared to smaller packages.
• Limited output power of 1.1W per channel may not be suitable for high-power audio applications.

Working Principles

The LM4970SDX/NOPB operates as a class AB audio amplifier. It amplifies the input audio signal with low distortion and noise, providing high-quality sound output. The amplifier can be powered by a wide range of supply voltages, making it suitable for various audio systems. It also features a shutdown mode that reduces power consumption when not in use. The internal thermal shutdown protection ensures safe operation by preventing overheating.

Application Field Plans

The LM4970SDX/NOPB is commonly used in the following audio applications:

1. Portable audio devices
2. Headphone amplifiers
3. Multimedia speakers
4. Home theater systems
5. Car audio systems

Alternative Models

Here are some alternative models that can be considered as alternatives to the LM4970SDX/NOPB:

1. TPA3116D2 - Class D audio amplifier with higher output power.
2. LM3886 - High-performance audio amplifier with lower distortion.
3. TDA7294 - Audio amplifier with built-in mute and standby functions.

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

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