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SPCA711A
! COMPONENT PLACEMENT
Components should be placed as close as possible to the associated pin.
The optimum layout enables the
SPCA711A to be located as close as possible to the power supply connector and the video output connector.
! POWER AND GROUND PLANES
For optimum performance, a common digital and analog ground plane is recommended.
Separate digital and
analog power planes are recommended.
The digital power plane should provide power to all digital logic on the
PC board, and the analog power plane should provide power to all SPCA711A power pins, VREF circuitry, and
COMP decoupling.
At least a 1/8-inch gap is required in between the digital power plane and the analog power
plane.
The analog power plane should be connected to the digital power plane (VCC) at a single point through
a ferrite bead, as illustrated in Figure 4, Table 6.
This bead should be located within 3 inches of the
SPCA711A.
The bead provides resistance to switching-currents, acting as a resistance at high frequencies.
A low-resistance bead should be used, such as Ferroxcube 5659065-3B, Fair-Rite 2723021447, or TDK BF45-
4001.
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