LM4928SD/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Amplifier

Characteristics: - High-performance audio amplifier - Low power consumption - Small package size - Wide supply voltage range - Excellent audio quality

Package: SDIP (Shrink Dual In-Line Package)

Essence: The LM4928SD/NOPB is a high-performance audio amplifier IC designed for portable electronic devices such as smartphones, tablets, and portable media players. It provides excellent audio quality while consuming low power.

Packaging/Quantity: The LM4928SD/NOPB is available in a small SDIP package. It is typically sold in reels containing multiple units.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Output Power: Up to 1.2W per channel
• Total Harmonic Distortion + Noise (THD+N): 0.03%
• Signal-to-Noise Ratio (SNR): 100dB
• Shutdown Current: 0.01μA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM4928SD/NOPB has the following pin configuration:

```

---

| | | 1 2 3 4 5 6 7 8 9 | |_______________________________________|

Pin 1: Shutdown Pin 2: Input Left Pin 3: Input Right Pin 4: Bypass Capacitor Pin 5: Gain Select Pin 6: Output Right Pin 7: Output Left Pin 8: Ground Pin 9: Power Supply ```

Functional Features

• High-quality audio amplification
• Low power consumption
• Shutdown mode for power saving
• Gain select pin for adjustable gain levels
• Bypass capacitor pin for improved low-frequency response

Advantages and Disadvantages

Advantages: - Excellent audio quality - Low power consumption - Small package size - Wide supply voltage range - Adjustable gain levels

Disadvantages: - Limited output power compared to larger amplifiers - May require additional external components for optimal performance

Working Principles

The LM4928SD/NOPB is a class AB audio amplifier that amplifies the input audio signal while maintaining low distortion and high efficiency. It utilizes a combination of internal circuitry and external components to achieve high-quality audio amplification.

When an audio signal is applied to the input pins, the LM4928SD/NOPB amplifies it according to the selected gain level. The amplified signal is then sent to the output pins, where it can be connected to speakers or headphones.

The amplifier operates within a specified supply voltage range and provides excellent audio quality with low distortion and noise. It also includes a shutdown mode to minimize power consumption when not in use.

Detailed Application Field Plans

The LM4928SD/NOPB is widely used in various portable electronic devices that require audio amplification. Some common application fields include:

1. Smartphones and mobile phones
2. Tablets and portable media players
3. Portable gaming devices
4. Bluetooth speakers
5. Personal audio devices (MP3 players, etc.)
6. Wearable devices with audio capabilities

Detailed and Complete Alternative Models

1. LM4863
2. LM386
3. TPA3116D2
4. MAX9744
5. TAS5713

These alternative models offer similar functionality and can be considered as alternatives to the LM4928SD/NOPB depending on specific requirements and design considerations.

In conclusion, the LM4928SD/NOPB is a high-performance audio amplifier IC designed for portable electronic devices. It offers excellent audio quality, low power consumption, and a small package size. With its wide supply voltage range and adjustable gain levels, it is suitable for various applications in the portable audio industry.