Texas Instruments provides a recommended PCB layout in the datasheet, but it's also important to follow general best practices for audio circuit board design, such as keeping the audio signal path short and away from noisy components, using a solid ground plane, and minimizing electromagnetic interference (EMI).
Proper biasing is critical for the LM4864M. Make sure to follow the recommended biasing scheme in the datasheet, and pay attention to the voltage supply, decoupling capacitors, and output stage configuration. Additionally, ensure that the input and output impedances are matched to prevent signal reflections and distortion.
The maximum power dissipation of the LM4864M is dependent on the package type and thermal resistance. For the NOPB package, the maximum power dissipation is approximately 1.4W. To prevent overheating, ensure good thermal conduction by using a heat sink, keeping the device away from other heat sources, and providing adequate airflow. Monitor the device temperature and adjust the power supply voltage and output stage configuration as needed.
Noise and EMI can be filtered out using a combination of passive and active components. Use ferrite beads, chokes, and capacitors to filter out high-frequency noise, and consider adding a common-mode filter or a differential-mode filter to reject EMI. Additionally, ensure that the PCB layout is designed to minimize EMI and noise coupling.
The recommended input impedance for the LM4864M is typically in the range of 10kΩ to 100kΩ, while the recommended output impedance is typically in the range of 10Ω to 100Ω. However, the optimal impedance values may vary depending on the specific application and system requirements. Consult the datasheet and application notes for more information.
Trust Checks
This model has been provided by community users.
Community Provided
This model has been verified by system checks.
System Verified
This model has been reviewed by community users.
Community Approved
Sponsored
LM4864M/NOPB Overview
Use the download button to access the LM4864M/NOPB schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like LM486,
or try a keyword search, such as Audio/Video Amplifiers
About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.
