- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄374047 > ADV7183BBSTZ (ANALOG DEVICES INC) Multiformat SDTV Video Decoder PDF資料下載
參數(shù)資料
| 型號： | ADV7183BBSTZ |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 顏色信號轉換 |
| 英文描述： | Multiformat SDTV Video Decoder |
| 中文描述： | COLOR SIGNAL DECODER, PQFP80 |
| 封裝： | LEAD FREE, MS-026-BEC, LQFP-80 |
| 文件頁數(shù)： | 94/100頁 |
| 文件大?。?/td> | 844K |
| 代理商： | ADV7183BBSTZ |
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頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁當前第94頁第95頁第96頁第97頁第98頁第99頁第100頁
ADV7183B
PCB LAYOUT RECOMMENDATIONS
The ADV7183B is a high precision, high speed, mixed-signal
device. To achieve the maximum performance from the part, it
is important to have a PCB board with a good layout. This
section provides guidelines for designing a board using the
ADV7183B.
Rev. B | Page 94 of 100
ANALOG INTERFACE INPUTS
Care should be taken when routing the inputs on the PCB.
Track lengths should be kept to a minimum, and 75 Ω trace
impedances should be used when possible. Trace impedances
other than 75 Ω also increase the chance of reflections.
POWER SUPPLY DECOUPLING
It is recommended to decouple each power supply pin with
0.1 μF and 10 nF capacitors. The fundamental idea is to have a
decoupling capacitor within about 0.5 cm of each power pin.
Also, avoid placing the capacitor on the opposite side of the PC
board from the ADV7183B, as doing so interposes resistive vias
in the path. The decoupling capacitors should be located
between the power plane and the power pin. Current should
flow from the power plane to the capacitor to the power pin. Do
not make the power connection between the capacitor and the
power pin. Placing a via underneath the 100 nF capacitor pads,
down to the power plane, is generally the best approach (see
269H
Figure 41).
VDD
GND
10nF
100nF
VIA TO SUPPLY
VIA TO GND
0
Figure 41. Recommended Power Supply Decoupling
It is very important to maintain low noise and good stability of
PVDD. Careful attention must be paid to regulation, filtering,
and decoupling. It is highly desirable to provide separate
regulated supplies for each of the analog circuitry groups
(AVDD, DVDD, DVDDIO, and PVDD).
Some graphic controllers use substantially different levels of
power when active (during active picture time) and when idle
(during horizontal and vertical sync periods). This can result in
a measurable change in the voltage supplied to the analog
supply regulator, which can, in turn, produce changes in the
regulated analog supply voltage. This can be mitigated by
regulating the analog supply, or at least PVDD, from a different,
cleaner power source, such as a 12 V supply.
It is also recommended to use a single ground plane for the
entire board. This ground plane should have a space between
the analog and digital sections of the PCB (see
270H
Figure 42).
ANALOG
SECTION
DIGITAL
SECTION
ADV7183B
0
Figure 42. PCB Ground Layout
Experience shows that the noise performance is the same or
better with a single ground plane. Using multiple ground planes
can be detrimental because each separate ground plane is
smaller, and long ground loops can result.
In some cases, using separate ground planes is unavoidable. For
those cases, it is recommended to place a single ground plane
under the ADV7183B. The location of the split should be under
the ADV7183B. For this case, it is even more important to place
components wisely because the current loops will be much
longer (current takes the path of least resistance). An example
of a current loop: power plane to ADV7183B to digital output
trace to digital data receiver to digital ground plane to analog
ground plane.
PLL
Place the PLL loop filter components as close as possible to the
ELPF pin. Do not place any digital or other high frequency
traces near these components. Use the values suggested in
271H
Figure 46 with tolerances of 10% or less.
DIGITAL OUTPUTS (BOTH DATA AND CLOCKS)
Try to minimize the trace length the digital outputs have to
drive. Longer traces have higher capacitance, which requires
more current, which causes more internal digital noise. Shorter
traces reduce the possibility of reflections.
Adding a 30 Ω to 50 Ω series resistor can suppress reflections,
reduce EMI, and reduce the current spikes inside the ADV7183B.
If series resistors are used, place them as close as possible to the
ADV7183B pins. However, try not to add vias or extra length to
the output trace to make the resistors closer.
If possible, limit the capacitance that each of the digital outputs
drive to less than 15 pF. This can easily be accomplished by
keeping traces short and by connecting the outputs to only one
device. Loading the outputs with excessive capacitance increases
the current transients inside the ADV7183B, creating more
digital noise on its power supplies.
DIGITAL INPUTS
The digital inputs on the ADV7183B are designed to work with
3.3 V signals, and are not tolerant of 5 V signals. Extra compo-
nents are needed if 5 V logic signals are required to be applied
to the decoder.
相關PDF資料 |
PDF描述 |
|---|---|
| ADV7183BKSTZ | Multiformat SDTV Video Decoder |
| ADV7183KST | Advanced Video Decoder with 10-Bit ADC and Component Input Support |
| AD7183 | Advanced Video Decoder with 10-Bit ADC and Component Input Support |
| ADV7185 | Professional NTSC/PAL Video Decoder with 10-Bit CCIR656 Output |
| ADV7185KST | Professional NTSC/PAL Video Decoder with 10-Bit CCIR656 Output |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ADV7183BKST | 制造商:Analog Devices 功能描述:MULTIFORMAT SDTV VID DECODER 80LQFP - Bulk |
| ADV7183BKSTZ | 功能描述:IC VIDEO DECODER NTSC 80-LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 編碼器，解碼器，轉換器 系列:- 產(chǎn)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(tǒng) 電壓 - 電源，模擬:- 電壓 - 電源，數(shù)字:- 安裝類型:- 封裝/外殼:模塊 供應商設備封裝:模塊 包裝:散裝 其它名稱:Q4645799 |
| ADV7183KST | 制造商:Analog Devices 功能描述:Video Decoder 2ADC 10-Bit 80-Pin LQFP 制造商:Rochester Electronics LLC 功能描述:VIDEO DECODER I.C. - Bulk |
| ADV7184 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Multiformat SDTV Video Decoder with Fast Switch Overlay Support |
| ADV7184BSTZ | 功能描述:IC DECODER VID SDTV MULTI 80LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 編碼器，解碼器，轉換器 系列:- 產(chǎn)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(tǒng) 電壓 - 電源，模擬:- 電壓 - 電源，數(shù)字:- 安裝類型:- 封裝/外殼:模塊 供應商設備封裝:模塊 包裝:散裝 其它名稱:Q4645799 |
發(fā)布緊急采購，3分鐘左右您將得到回復。