PI3HDMI301 Datasheet, PDF (14/16 Pages) Pericom Semiconductor Corporation – 3:1 Active Switch for HDMI Signals with Optimized Equalization for Enhanced Signal Integrity

ADVANCE INFORMATION - COMPANY CONFIDENTIAL
PI3HDMI301
3:1 Active Switch for HDMI™ Signals with
Optimized Equalization for Enhanced Signal Integrity
Requirements on the Decoupling Capacitors
There is no special requirement on the material of the capacitors. Ceramic capacitors are generally being used with typically materi-
als of X5R or X7R.
Layout and Decoupling CapacitorPlacement Consideration
i. Each 0.1μF decoupling capacitor should be placed as close as possible to each V_DD pin.
ii. V_DD and GND planes should be used to provide a low impedance path for power and ground.
iii. Via holes should be placed to connect to V_DD and GND planes directly.
iv. Trace should be as wide as possible
v. Trace should be as short as possible.
vi. The placement of decoupling capacitor and the way of routing trace should consider the power flowing criteria.
vii. 10μF capacitor should also be placed closed to our part and should be placed in the middle location of 0.1μF capacitors.
viii. Avoid the large current circuit placed close to our part; especially when it is shared the same V_DD and GND planes. Since large
current flowing on our V_DD or GND planes will generate a potential variation on the V_DD or GND of our part.
Bypass noise
V DD Plane
Power Flow
0.1uF
GND Plane
Peric om Part
Figure 2 Layout and Decoupling Capacitor Placement Diagram
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PS8959B
10/01/09