LM4667MM/NOPB

The LM4667MM/NOPB is a high-performance audio amplifier integrated circuit (IC) produced by Texas Instruments. It is designed for applications requiring high fidelity audio amplification, making it suitable for a variety of consumer electronics, including portable audio devices, televisions, and home theater systems.

Key Features:

1. Type: The LM4667 is a Class D audio amplifier, which means it operates with high efficiency, reducing heat generation and power consumption compared to traditional linear amplifiers.

2. Output Power: The amplifier can deliver up to 2.5W of output power per channel into an 8-ohm load, making it capable of driving small speakers effectively. It can also provide higher output power into lower impedance loads, such as 4-ohm speakers.

3. Supply Voltage: The device operates over a wide supply voltage range, typically from 2.5V to 5.5V, allowing it to be used in battery-powered applications.

4. Low Distortion: The LM4667 features low total harmonic distortion (THD) and noise, ensuring high-quality audio reproduction with minimal interference.

5. Integrated Features: The IC includes built-in features such as thermal shutdown protection, short-circuit protection, and a mute function, enhancing reliability and user experience.

6. Package Type: The LM4667MM/NOPB is available in a small, surface-mount package (MSOP-8), which is ideal for space-constrained applications.

7. Efficiency: With its Class D architecture, the LM4667 achieves high efficiency, often exceeding 90%, which is particularly beneficial for battery-operated devices as it extends battery life.

8. Applications: This amplifier is suitable for a range of applications, including portable speakers, soundbars, televisions, and other consumer audio devices where compact size and efficiency are critical.

Electrical Characteristics:

• Input Impedance: The input impedance is designed to be compatible with various audio sources, ensuring easy integration into existing systems.
• Gain: The amplifier typically has a fixed gain, which can be optimized for specific applications.
• Thermal Performance: The design includes considerations for thermal management, allowing it to operate reliably under various load conditions.

Conclusion:

The LM4667MM/NOPB from Texas Instruments is a versatile and efficient audio amplifier that meets the demands of modern audio applications. Its combination of high output power, low distortion, and compact packaging makes it an excellent choice for designers looking to enhance audio performance in portable and stationary devices alike.