Texas Instruments recommends a 4-layer PCB with a solid ground plane, and to keep the input and output traces as short as possible. Additionally, it's recommended to use a common-mode choke or a ferrite bead to filter out high-frequency noise.
The choice of output filter components depends on the specific requirements of your application. TI recommends using a combination of resistors, capacitors, and inductors to achieve the desired frequency response. You can use TI's FilterPro software or consult with an applications engineer to determine the optimal component values.
The maximum power dissipation of the LMH6559MAX/NOPB is 1.4W. To ensure it doesn't overheat, make sure to provide adequate heat sinking, such as a thermal pad or a heat sink, and keep the ambient temperature below 85°C. You can also use thermal simulation software to estimate the junction temperature and ensure it stays within the recommended range.
Yes, the LMH6559MAX/NOPB is qualified for use in high-reliability and aerospace applications. It meets the requirements of various industry standards, including MIL-PRF-38535 and ESCC 9000. However, you should consult with TI's quality and reliability team to ensure that the device meets the specific requirements of your application.
TI recommends following a systematic troubleshooting approach, starting with checking the power supply, input and output connections, and PCB layout. You can also use TI's troubleshooting guide and application notes to identify and resolve common issues. If you're still experiencing problems, consult with an applications engineer for further assistance.
LMH6559MAX/NOPB datasheet
by Texas Instruments
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