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參數資料
型號: ADV7190KST
廠商: ANALOG DEVICES INC
元件分類: 顏色信號轉換
英文描述: Video Encoder with Six 10-Bit DACs and Video Encoder with Six DAC Outputs
中文描述: COLOR SIGNAL ENCODER, PQFP64
封裝: LQFP-64
文件頁數: 51/69頁
文件大小: 628K
代理商: ADV7190KST
ADV7190/ADV7191
–51–
REV. 0
APPENDIX 7
DAC BUFFERING
External buffering is needed on the ADV7190/ADV7191 DAC
outputs. The con
fi
guration in Figure 99 is recommended.
When calculating absolute output full-scale current and voltage
use the following equations:
V
OUT
=
I
OUT
×
R
LOAD
I
OUT
= (
V
REF
×
K
)/
R
SET
K
= 4.2146
constant
,
V
REF
= 1.235
V
ADV7190/ADV7191
V
REF
PIXEL
PORT
V
AA
OUTPUT
BUFFER
DAC A
CVBS
CHROMA
G
LUMA
B
R
1.2k
R
SET1
DAC B
DAC C
DAC D
DAC E
DAC F
DIGITAL
CORE
1.2k
R
SET2
OUTPUT
BUFFER
OUTPUT
BUFFER
OUTPUT
BUFFER
OUTPUT
BUFFER
OUTPUT
BUFFER
Figure 99. Output DAC Buffering Configuration
OUTPUT TO
TV MONITOR
INPUT/
OPTIONAL
FILTER O/P
+V
CC
AD8051
V
CC
NOTE: ALTERNATELY THE AD8051 OP AMP CAN BE USED
2
1
5
3
4
Figure 100. Recommended DAC Output Buffer Using an
Op Amp
相關PDF資料
PDF描述
ADV7191 Video Encoder with Six 10-Bit DACs and Video Encoder with Six DAC Outputs
ADV7191KST Video Encoder with Six 10-Bit DACs and Video Encoder with Six DAC Outputs
ADV7190 Video Encoder with Six 10-Bit DACs and Video Encoder with Six DAC Outputs
ADV7192KST Video Encoder with Six 10-Bit DACs, 54 MHz Oversampling and Progressive Scan Inputs
ADV7192 Video Encoder with Six 10-Bit DACs, 54 MHz Oversampling and Progressive Scan Inputs
相關代理商/技術參數
參數描述
ADV7190KSTZ 制造商:Analog Devices 功能描述:Video Encoder 6DAC 10-Bit 64-Pin LQFP
ADV7191 制造商:AD 制造商全稱:Analog Devices 功能描述:Video Encoder with Six 10-Bit DACs and Video Encoder with Six DAC Outputs
ADV7191KST 制造商:Analog Devices 功能描述:Video Encoder 6DAC 10-Bit 64-Pin LQFP 制造商:Rochester Electronics LLC 功能描述:54M 4X STD DEF ENCODER NON-MACRO I.C. - Tape and Reel
ADV7191KSTZ 制造商:Analog Devices 功能描述:Video Encoder 6DAC 10-Bit 64-Pin LQFP 制造商:Analog Devices 功能描述:IC VIDEO ENCODER
ADV7192 制造商:AD 制造商全稱:Analog Devices 功能描述:Video Encoder with Six 10-Bit DACs, 54 MHz Oversampling and Progressive Scan Inputs
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