參數(shù)資料
型號(hào): BT457KPJ80
英文描述: Video DAC with Color Palette (RAMDAC)
中文描述: 視頻DAC的調(diào)色板(的RAMDAC)
文件頁(yè)數(shù): 28/60頁(yè)
文件大?。?/td> 647K
代理商: BT457KPJ80
3.0 PC Board Layout Considerations
Bt457/Bt458
3.4 Power Supply Decoupling
125 MHz/135 MHz/165 MHz Monolithic CMOS 256 Color Palette RAMDAC
3-4
Conexant
L45801 Rev. N
Figure 3-2. Typical Connection Diagram
COMP
VAA
VREF
GND
FS ADJUST
(N/C) IOR
(OUT) IOG
(PLL) IOB
Bt457/458
C8
ANALOG POWER PLANE
C2
C4
C5
C7
R4
C9
Z1
+
C10
C1
+5 V (VCC)
RSET
R1
R2
R3
(1)
(1)
TO
VIDEO
CONNECTOR
VAA
P
P
P
P
DAC
OUTPUT
1N4148/9
1N4148/9
TO MONITOR
GROUND
(POWER SUPPLY
CONNECTOR)
457-8_006
NOTE(S):
(1)
Not used with Bt457.
2. Bt457 pin names are in parentheses. Each pair of device VAA and GND pins must be separately decoupled with 0.1 μF and
0.01 μF capacitors
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