National Semiconductor Tariff Inquiry

LM4543VH

LM4543VH Description

The LM4543VH is a high-performance audio codec designed for consumer electronics applications. Manufactured by National Semiconductor, this integrated circuit (IC) offers a comprehensive solution for audio processing with advanced features and robust performance. The LM4543VH is part of the Audio Codec '97 family, known for its high fidelity and versatile functionality.

LM4543VH Features

• Dynamic Range: The LM4543VH a boasts dynamic range of 90 dB for ADCs and 89 dB for DACs, ensuring high-quality audio reproduction with minimal noise and distortion.
• Supply Voltage: It operates within a digital supply voltage range of 3V to 5.5V and an analog supply voltage range of 4.2V to 5.5V, providing flexibility in power requirements.
• Data Interface: The LM4543VH utilizes a serial data interface, which simplifies connections and reduces the number of required pins, making it suitable for compact designs.
• Number of ADCs / DACs: Equipped with two ADCs and two DACs, the LM4543VH can handle multiple audio channels simultaneously, making it ideal for stereo audio applications.
• Sigma Delta: The use of Sigma Delta technology in the LM4543VH enhances the precision and accuracy of audio signal conversion, resulting in superior audio quality.
• Resolution: an With 18-bit resolution, the LM4543VH provides detailed and high-fidelity audio processing, suitable for demanding audio applications.
• Mounting Type: The surface mount package of the LM4543VH ensures easy integration into modern PCB designs, facilitating efficient manufacturing processes.
• Package: Available in a tray package, the LM4543VH is easy to handle and store, ensuring reliable supply chain management.
• Product Status: Although the LM4543VH is now obsolete, it remains a benchmark for audio codec performance and is still sought after for legacy systems and specific applications.

LM4543VH Applications

The LM4543VH is well-suited for a variety of consumer electronics applications where high-quality audio processing is essential. Specific use cases include:

• Home Theater Systems: The LM4543VH's high dynamic range and precision make it ideal for home theater systems, providing immersive audio experiences.
• Audio Amplifiers: Its robust performance ensures clear and detailed audio output, making it suitable for high-fidelity audio amplifiers.
• Multimedia Devices: The LM4543VH can be integrated into multimedia devices such as DVD players and set-top boxes to enhance audio quality.
• Professional Audio Equipment: Its high resolution and dynamic range make it suitable for professional audio applications, including mixing consoles and recording equipment.

Conclusion of LM4543VHThe

LM4543VH by National Semiconductor is a versatile and high-performance audio codec that offers superior audio quality and functionality. Its advanced features, such as Sigma Delta technology and high dynamic range, make it stand out in the market. Despite its obsolescence, the LM4543VH remains a reliable choice for applications requiring high-fidelity audio processing. Its compatibility with various supply voltages and ease of integration through a serial interface further enhance its appeal. For designers and engineers looking for proven a solution in audio codecs, the LM4543VH is a solid option, especially for legacy systems and specific high-quality audio applications.