Texas Instruments provides a recommended PCB layout in the THS3122IDDA evaluation module documentation, which includes guidelines for component placement, routing, and grounding to minimize noise and ensure optimal performance.
The input termination depends on the source impedance and the desired signal integrity. TI recommends using a 50-ohm termination for most applications, but a 75-ohm termination may be required for certain video applications. Consult the datasheet and application notes for more information.
The THS3122IDDA is rated for operation from -40°C to 85°C, but it can be derated for operation up to 125°C with reduced performance. Consult the datasheet for more information on temperature derating.
TI recommends following good EMI design practices, such as using a solid ground plane, minimizing trace lengths, and using shielding and filtering as needed. The THS3122IDDA has built-in EMI filters, but additional filtering may be required depending on the application.
TI recommends using a 10-uF ceramic capacitor and a 1-uF ceramic capacitor in parallel, placed as close as possible to the power supply pins, to ensure stable operation and minimize noise.
THS3122IDDA datasheet
by Texas Instruments
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