FMS6646_09 Datasheet, PDF (10/12 Pages) Fairchild Semiconductor – Six Channel, SD/HD 1080p Video Filter Driver

Layout Considerations
General layout and supply bypassing play major roles in
high-frequency performance and thermal
characteristics. Fairchild offers a demonstration board,
FMS6646DEMO, to guide layout and aid device testing
and characteriza-tion.
The FMS6646DEMO is a four-layer board with a full
power and ground plane. Following this layout
configura-tion pro vides the optimum performance and
thermal char-acteristics. For best results, follow the
steps below as a basis for high-frequency layout:
ƒ Include 0.01μF and 0.1μF ceramic bypass capacitors.
ƒ Place the 0.01μF capacitor within 0.75 inches of the power pin.
ƒ Place the 0.1μF capacitor within 0.1 inches of the power pin.
ƒ For multi-layer boards, use a large ground plane to help dissipate heat.
ƒ For two-layer boards, use a ground plane that extends beyond the device by at least 0.5 inches.
ƒ Minimize all trace lengths to reduce series inductances.
© 2009 Fairchild Semiconductor Corporation
FMS6646 • Rev.1.0.2
10
www.fairchildsemi.com