National Semiconductor Tariff Inquiry

LM4546BVH

LM4546BVH Description

The LM4546BVH is a high-performance audio CODEC designed for consumer electronics applications. Manufactured by National Semiconductor, this device is part of the Audio, AC '97 category and features a robust set of technical specifications that make it ideal for a wide range of audio processing tasks. The LM4546BVH is housed in a PQFP48 package, making it suitable for surface mount applications and ensuring ease of integration into modern electronic designs.

LM4546BVH Features

• Dynamic Range: The LM4546BVH boasts a dynamic range of 90 dB for ADCs and 89 dB for DACs, providing exceptional audio quality and clarity. This high dynamic range ensures that the device can handle a wide spectrum of audio signals, from very soft to very loud, without significant loss of fidelity.
• Supply Voltage: The device operates with a digital supply voltage ranging from 3V to 5.5V and an analog supply voltage from4.2V to 5.5V. This wide voltage range provides flexibility in power supply options, making it suitable for various power configurations.
• Data Interface: The LM4546BVH utilizes a serial data interface, which simplifies the connection and communication with other components in the system. This interface is efficient and reduces the number of pins required for data transfer.
• Number of ADCs / DACs: The device includes two ADCs and two DACs, enabling simultaneous processing of multiple audio channels. This dual-channel capability is particularly useful for stereo audio applications.
• Sigma Delta: The LM4546BVH employs Sigma Delta modulation, a technique that enhances the precision and accuracy of the analog-to-digital and digital-to-analog conversions. This results in high-resolution audio output and improved overall performance.
• Resolution: The CODEC offers a resolution of 18 bits, ensuring high-quality audio reproduction and detailed signal processing.
• Mounting Type: The surface mount technology (SMT) used in the LM4546BVH allows for compact and reliable integration into printed circuit boards, reducing the overall footprint and improving the durability of the final product.
• Moisture Sensitivity Level: With an MSL rating of 3 (168 hours), the LM4546BVH is designed to withstand moderate levels of moisture exposure, making it suitable for use in environments with varying humidity levels.

LM4546BVH Applications

The LM4546BVH is ideal for a variety of consumer electronics applications where high-quality audio processing is required. Some specific use cases include:

• Home Theater Systems: The device's high dynamic range and dual-channel capability make it perfect for processing audio signals in home theater systems, ensuring a rich and immersive sound experience.
• Audio Amplifiers: The LM4546BVH can be used in audio amplifiers to provide high-fidelity audio output, enhancing the listening experience for users.
• Portable Audio Devices: The wide supply voltage range and compact surface mount package make the device suitable for portable audio devices, such as MP3 players and portable speakers.
• Gaming Consoles: The high-resolution audio processing capabilities of the LM4546BVH make it an excellent choice for gaming consoles, where immersive audio is crucial for an engaging gaming experience.

Conclusion of LM4546BVH

The LM4546BVH from National Semiconductor is a versatile and high-performance audio CODEC designed to meet the demands of modern consumer electronics. Its wide dynamic range, dual-channel processing, and Sigma Delta modulation provide superior audio quality and clarity. The device's flexibility in supply voltage and compact surface mount package make it suitable for a wide range of applications, from home theater systems to portable audio devices. With its robust technical specifications and high-quality performance, the LM4546BVH stands out as a reliable and efficient solution for audio processing needs.