- 您現在的位置：買賣IC網 > PDF目錄374046 > ADV7173* (Analog Devices, Inc.) Digital PAL/NTSC Video Encoder with Six DACs (10 Bits). Color Control and Enhanced Power Management PDF資料下載
參數資料
| 型號： | ADV7173* |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Digital PAL/NTSC Video Encoder with Six DACs (10 Bits). Color Control and Enhanced Power Management |
| 中文描述： | 數碼PAL / NTSC視頻編碼器與六數模轉換器（10位）。色彩控制和增強的電源管理 |
| 文件頁數： | 51/59頁 |
| 文件大小： | 455K |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁當前第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁
ADV7172/ADV7173
–51–
REV. A
If an output filter is required for the CVBS, Y, UV, Chroma
and RGB outputs of the ADV7172/ADV7173, the filter shown
below can be used. The plot of the filter characteristics is
shown in Figure 93. An Output Filter is not required if the
outputs of the ADV7172/ADV7173 are connected to most
analog monitors or analog TVs; however, if the output signals
are applied to a system where sampling is used (e.g., Digital
TVs), then a filter is required to prevent aliasing.
APPENDIX 7
OPTIONAL OUTPUT FILTER
2.2
m
H
22pF
270pF
330pF
FILTER I/P
FILTER O/P
Figure 92. Output Filter Used with Output Buffer
FREQUENCY – Hz
10k
100M
100k
1M
10M
D
0
–5
–10
–70
–15
–20
–25
–30
–35
–40
–45
–50
–55
–60
–65
V
dB
– OP
Figure 93. Output Filter Plot
APPENDIX 8
OPTIONAL DAC BUFFERING
When external buffering is needed of the ADV7172/ADV7173
DAC outputs, the configuration in Figure 94 is recommended.
This configuration shows the DAC outputs, A, B, C, running at
half (18 mA) their full current (36 mA) capability. This will
allow the ADV7172/ADV7173 to dissipate less power; the analog
current is reduced by 50% with a R
SET1
= 300
and R
SET2
=
600
and an R
LOAD
of 75
. This mode is recommended for
3.3 V operation as optimum performance is obtained from the
DAC outputs at 18 mA with a V
AA
of 3.3 V. This buffer also
adds extra isolation on the video outputs (see buffer circuit in
Figure 95). Note that DACs D, E and F will always require
buffering as the full-scale output current from these DACs is
limited to 8.66 mA. With DACs A, B and C, buffering is op-
tional, based on the user requirements for performance and power
consumption.
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
ADV7172/ADV7173
V
REF
PIXEL
PORT
V
AA
OUTPUT
BUFFER
DAC A
CVBS
CHROMA
G
LUMA
B
R
300
V
R
SET1
OUTPUT
BUFFER
DAC B
OUTPUT
BUFFER
DAC C
OUTPUT
BUFFER
DAC D
OUTPUT
BUFFER
DAC E
OUTPUT
BUFFER
DAC F
DIGITAL
CORE
600
V
R
SET2
Figure 94. Output DAC Buffering Configuration
300
V
75
V
OUTPUT TO
OUTPUT FILTER/
TV MONITOR
1k
V
INPUT
+V
CC
AD847
–V
CC
1k
V
Figure 95. Recommended Output DAC Buffer
相關PDF資料 |
PDF描述 |
|---|---|
| ADV7174 | Chip Scale PAL/NTSC Video Encoder with Advanced Power Management |
| ADV7174BCP | Chip Scale PAL/NTSC Video Encoder with Advanced Power Management |
| ADV7174BCP-REEL | Chip Scale PAL/NTSC Video Encoder with Advanced Power Management |
| ADV7174KCP | Chip Scale PAL/NTSC Video Encoder with Advanced Power Management |
| ADV7174KCP-REEL | Chip Scale PAL/NTSC Video Encoder with Advanced Power Management |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ADV7173KST | 制造商:Rochester Electronics LLC 功能描述:6-DAC NTSC/PAL ENCODER I.C. - Tape and Reel 制造商:Analog Devices 功能描述:IC VIDEO ENCODER |
| ADV7173KST-REEL | 制造商:Analog Devices 功能描述:Video Encoder 6DAC 10-Bit 48-Pin LQFP T/R |
| ADV7173KSTZ | 功能描述:IC DAC VIDEO NTSC 6-CH 48LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 編碼器，解碼器，轉換器 系列:- 產品變化通告:Development Systems Discontinuation 26/Apr/2011 標準包裝:1 系列:- 類型:編碼器 應用:DVB-S.2 系統 電壓 - 電源，模擬:- 電壓 - 電源，數字:- 安裝類型:- 封裝/外殼:模塊 供應商設備封裝:模塊 包裝:散裝 其它名稱:Q4645799 |
| ADV7173KSTZ-REEL | 功能描述:IC DAC VIDEO NTSC 6-CH 48LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 編碼器，解碼器，轉換器 系列:- 產品變化通告:Development Systems Discontinuation 26/Apr/2011 標準包裝:1 系列:- 類型:編碼器 應用:DVB-S.2 系統 電壓 - 電源，模擬:- 電壓 - 電源，數字:- 安裝類型:- 封裝/外殼:模塊 供應商設備封裝:模塊 包裝:散裝 其它名稱:Q4645799 |
發布緊急采購，3分鐘左右您將得到回復。