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參數(shù)資料
| 型號： | ADV7177 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Integrated Digital CCIR-601 to PAL/NTSC Video Encoder |
| 中文描述： | 綜合數(shù)字無線電咨詢委員會，601到PAL / NTSC制式視頻編碼器 |
| 文件頁數(shù)： | 37/38頁 |
| 文件大小： | 280K |
| 代理商： | ADV7177 |
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ADV7177/ADV7178
–37–
REV. 0
For external buffering of the ADV7177/ADV7178 DAC out-
puts, the configuration in Figure 67 is recommended. This
configuration shows the DAC outputs running at half (18 mA)
their full current (34.7 mA) capability. This will allow the
ADV7177/ADV7178 to dissipate less power, the analog current is
reduced by 50% with a R
SET
of 300
and a R
LOAD
of 75
. This
mode is recommended for 3.3 volt operation as optimum perfor-
mance is obtained from the DAC outputs at 18 mA with a V
AA
of
3.3 volts. This buffer also adds extra isolation on the video out-
APPENDIX 6
OPTIONAL DAC BUFFERING
puts, see buffer circuit in Figure 68. When calculating absolute
output full current and voltage, use the following equation:
V
OUT
=
I
OUT
×
R
LOAD
(
I
OUT
=
V
REF
×
K
)
R
SET
K
=
4.2146 constant,
V
REF
=
1.235 V
ADV7177/ADV7178
V
REF
DIGITAL
CORE
PIXEL
PORT
300
V
R
SET
75
V
75
V
75
V
V
AA
OUTPUT
BUFFER
DAC A
OUTPUT
BUFFER
OUTPUT
BUFFER
DAC C
DAC B
Figure 67. Output DAC Buffering Configuration
2N2907
75
V
75
V
OUTPUT TO
TV/MONITOR
36
V
INPUT
V
CC
Figure 68. Recommended Output DAC Buffer
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| ADV7178KS | Integrated Digital CCIR-601 to PAL/NTSC Video Encoder |
| ADV7180 | 10-Bit, 4 x Oversampling SDTV Video Decoder |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADV7177KS | 制造商:Analog Devices 功能描述:Video Encoder 3DAC 9-Bit 44-Pin MQFP 制造商:Rochester Electronics LLC 功能描述:NTSC/PAL 3 DAC VIDEO ENCODER I.C. - Bulk 制造商:Analog Devices 功能描述:IC VIDEO ENCODER |
| ADV7177KS-REEL | 制造商:Analog Devices 功能描述:Video Encoder 3DAC 9-Bit 44-Pin MQFP T/R 制造商:Rochester Electronics LLC 功能描述:NTSC/PAL 3 DAC VIDEO ENCODER I.C. - Tape and Reel |
| ADV7177KSZ | 功能描述:IC DAC VIDEO NTSC 3-CH 44MQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 編碼器，解碼器，轉(zhuǎn)換器 系列:- 產(chǎn)品變化通告:Development Systems Discontinuation 26/Apr/2011 標(biāo)準包裝:1 系列:- 類型:編碼器 應(yīng)用:DVB-S.2 系統(tǒng) 電壓 - 電源，模擬:- 電壓 - 電源，數(shù)字:- 安裝類型:- 封裝/外殼:模塊 供應(yīng)商設(shè)備封裝:模塊 包裝:散裝 其它名稱:Q4645799 |
| ADV7177KSZ-REEL | 功能描述:IC DAC VIDEO NTSC 3-CH 44MQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 編碼器，解碼器，轉(zhuǎn)換器 系列:- 產(chǎn)品變化通告:Development Systems Discontinuation 26/Apr/2011 標(biāo)準包裝:1 系列:- 類型:編碼器 應(yīng)用:DVB-S.2 系統(tǒng) 電壓 - 電源，模擬:- 電壓 - 電源，數(shù)字:- 安裝類型:- 封裝/外殼:模塊 供應(yīng)商設(shè)備封裝:模塊 包裝:散裝 其它名稱:Q4645799 |
| ADV7178 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Integrated Digital CCIR-601 to PAL/NTSC Video Encoder |
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