Texas Instruments provides a recommended PCB layout in the datasheet, which includes guidelines for component placement, thermal management, and routing. Additionally, the TI website offers a PCB layout tool that can help with designing a custom layout.
The output filter components (L, C, and R) should be selected based on the desired frequency response, output power, and load impedance. TI provides a filter design tool on their website, which can help with component selection. Additionally, the datasheet provides guidelines for filter component selection.
The maximum power dissipation of the LM4921ITLX/NOPB is dependent on the ambient temperature and the thermal resistance of the package. According to the datasheet, the maximum power dissipation is 2.5W at an ambient temperature of 25°C. However, this value can be derated at higher temperatures.
Yes, the LM4921ITLX/NOPB can be used in a bridged configuration to increase the output power. However, this requires careful consideration of the output filter components, load impedance, and power supply voltage. TI provides application notes and design guides on their website for bridged amplifier configurations.
The LM4921ITLX/NOPB has built-in overvoltage protection (OVP) and undervoltage protection (UVP) circuits. However, additional protection circuits may be required depending on the application. TI recommends using voltage regulators and protection devices such as the TLV7031 or TLV7035 to protect the amplifier from overvoltage and undervoltage conditions.
LM4921ITLX/NOPB datasheet
by Texas Instruments
