參數(shù)資料
型號(hào)： HMP8190EVAL1
廠商： Intersil Corporation
英文描述： NTSC/PAL Video Encoder
中文描述： NTSC / PAL視頻編碼器
文件頁數(shù)： 30/32頁
文件大小： 227K
代理商： HMP8190EVAL1
30
External Reference Voltage
If an external reference voltage is used, its circuitry should
receive power from the same plane as the
HMP8190/HMP8191. The external VREF must also be
stable and well decoupled from the power plane. An example
VREF circuit using a band gap reference diode is shown in
Figure 27.
Analog Output Filters
The various video standards specify the frequency response
of the video signal. The HMP8190/HMP8191 uses 2X
oversampling DACs to simplify the reconstruction filter
required. Example post filters are shown in Figure 28. The
analog output filters should be as close as possible to the
HMP8190/HMP8191.
FIGURE 26A. V
CC
AND V
AA
PLANES
FIGURE 26B. COMMON GROUND PLANE
FIGURE 26. EXAMPLE POWER AND GROUND PLANES
VCC
VAA
BEAD
CAPACITOR
8154/8156A
817x
PCB
FERRITE
BULK AREA
LP
CONN.
FILTERS
ANALOG
GND
8154/8156A
817x
PCB
LP
CONN.
FILTERS
ANALOG
HMP8190, HMP8191
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