HMP8156 Intersil Corporation, HMP8156 Datasheet - Page 31

• Manufacturer Part Number: HMP8156
• Description: Ntsc/pal Encoder
• Manufacturer: Intersil Corporation

For proper operation, power supply decoupling is required. It
should be done using a 0.1 F ceramic capacitor in parallel
with a 0.01 F chip capacitor for each group of V
ground. These capacitors should be located as close to the
V
AA
and GND pins as possible, using short, wide traces.
VCC
GND
FERRITE
BEAD
FIGURE 31. EXAMPLE POWER AND GROUND PLANES
FIGURE 31B. COMMON GROUND PLANE
FIGURE 31A. V
BULK AREA
CAPACITOR
AA
pins to
HMP8156
VAA
CC
31
AND V
8156
8156
If a separate linear regulator is used to provide power to the
HMP8156 power plane, the power-up sequence should be
designed to ensure latchup will not occur. A separate linear reg-
ulator is recommended if the power supply noise on the V
pins exceeds 200mV. About 10% of the noise (that is less than
1MHz) on the V
AA
PLANES
FILTERS
FILTERS
AA
LP
LP
pins will couple onto the analog outputs.
ANALOG
ANALOG
CONN.
CONN.
PCB
PCB
AA