參數(shù)資料
型號(hào): ADV7123JST330
廠商: ANALOG DEVICES INC
元件分類: DAC
英文描述: CMOS, 240 MHz Triple 10-Bit High Speed Video DAC
中文描述: PARALLEL, WORD INPUT LOADING, 10-BIT DAC, PQFP48
封裝: PLASTIC, LQFP-48
文件頁(yè)數(shù): 16/20頁(yè)
文件大小: 342K
代理商: ADV7123JST330
ADV7123
–16–
REV. B
Any active pull-up termination resistors for the digital inputs
should be connected to the regular PCB power plane (V
CC
) and
not the analog power plane.
Analog Signal Interconnect
The ADV7123 should be located as close as possible to the
output connectors, thus minimizing noise pickup and reflections
due to impedance mismatch.
The video output signals should overlay the ground plane and
not the analog power plane, thereby maximizing the high fre-
quency power supply rejection.
GND
R
SET
IOR
IOG
IOB
ADV7123
75
COMP
COMPLEMENTARY
OUTPUTS
R9–R0
G9–G0
B9–B0
CLOCK
SYNC
PSAVE
VIDEO
DATA
INPUTS
ANALOG GROUND PLANE
L1
(FERRITE BEAD)
V
AA
V
REF
R
SET
530
IOR
IOG
IOB
75
75
BLANK
75
75
75
0.1 F
0.1 F
10 F
0.01 F
33 F
0.1 F
5V (V
AA
)
POWER SUPPLY DECOUPLING (0.1 F AND 0.01 F
CAPACITOR FOR EACH V
AA
GROUP)
COAXIAL CABLE
75
13, 29,
30
25, 26
39-48
1-10
14-23
MONITOR
(CRT)
BNC
CONNECTORS
5V (V
AA
)
V
CC
V
AA
Figure 7. Typical Connection Diagram
For optimum performance, the analog outputs should each have
a source termination resistance to ground of 75
(doubly
terminated 75
configuration). This termination resistance
should be as close as possible to the ADV7123 to minimize
reflections.
Additional information on PCB design is available in an application
note entitled,
Design and Layout of a Video Graphics System for
Reduced EMI
. This application note is available from Analog
Devices, publication no. E1309–15–10/89.
相關(guān)PDF資料
PDF描述
ADV7123JST240 CMOS, 240 MHz Triple 10-Bit High Speed Video DAC
ADV7123 CMOS, 240 MHz Triple 10-Bit High Speed Video DAC(240MHz三通道10位高速視頻D/A轉(zhuǎn)換器)
ADV7125JST240 CMOS, 330 MHz Triple 8-Bit High Speed Video DAC
ADV7125JST330 CMOS, 330 MHz Triple 8-Bit High Speed Video DAC
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