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 separating analog and digital grounds, using a solid ground plane, and minimizing trace lengths and widths.
To ensure stability, make sure to follow the recommended component values and PCB layout, and also add a 10uF capacitor between the BYPASS pin and ground. Additionally, ensure that the input and output capacitors are of high quality and have low ESR.
The maximum power dissipation of the LM4990 is dependent on the ambient temperature and the thermal resistance of the package. According to the datasheet, the maximum power dissipation is 1.4W at 25°C ambient temperature. However, it's recommended to derate the power dissipation based on the actual operating conditions.
Yes, the LM4990 can be used in a stereo audio application by using two devices, one for each channel. However, it's important to ensure that the power supplies and grounds are properly isolated to prevent crosstalk and noise.
The recommended input voltage range for the LM4990 is 2.7V to 5.5V. Operating the device outside of this range may affect its performance and reliability.
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
LM4990ITLX/NOPB Overview
Use the download button to access the LM4990ITLX/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 LM499,
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.
