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參數(shù)資料
| 型號(hào)： | ADV7191 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Video Encoder with Six 10-Bit DACs and Video Encoder with Six DAC Outputs |
| 中文描述： | 視頻編碼器與六10位DAC和DAC的輸出6視頻編碼器 |
| 文件頁(yè)數(shù)： | 51/69頁(yè) |
| 文件大小： | 628K |
| 代理商： | ADV7191 |
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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(guān)PDF資料 |
PDF描述 |
|---|---|
| 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 |
| ADV7194KST | Professional Extended-10⑩ Video Encoder with 54 MHz Oversampling |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| ADV7192KST | 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 |
| ADV7194 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Professional Extended-10⑩ Video Encoder with 54 MHz Oversampling |
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