参数资料
| 型号： | EVAL-ADV7195EB |
| 厂商： | Analog Devices Inc |
| 文件页数： | 31/36页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR ADV7195 |
| 标准包装： | 1 |
| 主要目的： | 视频，视频处理 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | ADV7195 |
| 主要属性： | 多格式顺序扫描/HDTV 编码器，3 个 11 位 ADC |
| 次要属性： | 内部测试样式发生器，带颜色控制 |
| 已供物品： | 板 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页当前第31页第32页第33页第34页第35页第36页
ADV7195
DAC output traces on a PCB should be treated as transmission
lines. It is recommended that the DACs be placed as close as
possible to the output connector, with the analog output traces
being as short as possible (less than 3 inches). The DAC termi-
nation resistors should be placed as close as possible to the
DAC outputs and should overlay the PCB’s ground plane. As
well as minimizing reflections, short analog output traces will
reduce noise pickup due to neighboring digital circuitry.
Supply Decoupling
Noise on the analog power plane can be further reduced by the
use of decoupling capacitors.
Optimum performance is achieved by the use of 0.1 μ F ceramic
capacitors. Each of group of V AA or V DD pins should be indi-
vidually decoupled to ground. This should be done by placing
the capacitors as close as possible to the device with the capaci-
tor leads as short as possible, thus minimizing lead inductance.
Digital Signal Interconnect
The digital signal lines should be isolated as much as possible
from the analog outputs and other analog circuitry. Digital signal
lines should not overlay the analog power plane.
Due to the high clock rates used, long clock lines to the ADV7195
should be avoided to minimize noise pickup. Any active pull-up
termination resistors for the digital inputs should be connected
to the digital power plane and not the analog power plane.
Analog Signal Interconnect
The ADV7195 should be located as close as possible to the
output connectors, thus minimizing noise pickup and reflec-
tions due to impedance mismatch.
For optimum performance, the analog outputs should be source
and load terminated, as shown in Figure 58. The termination
resistors should be as close as possible to the ADV7195 to mini-
mize reflections.
Any unused inputs should be tied to ground.
Video Output Buffer and Optional Output Filter
Output buffering is necessary in order to drive output devices,
s uch as progressive scan or HDTV monitors.
Analog Devices produces a range of suitable op amps for this
application. Suitable op amps would be the AD8009, AD8002,
AD8001, or AD8057. More information on line driver buffering
circuits is given in the relevant op amp data sheets.
+5V
0.1 F
10 F
DAC A
LPF
75
COAX
AD8057
75
0.1 F
10 F
75
ADV7195
– 5V
+5V
PROGRESSIVE
SCAN
0.1 F
10 F
MONITOR
DAC B
LPF
AD8057
75
75
0.1 F
COAX
10 F
75
+5V
+5V
0.1 F
10 F
DAC C
LPF
75
COAX
AD8057
75
0.1 F
10 F
75
– 5V
Figure 58. Output Buffer and Optional Filter
REV. A
–31 –
相关PDF资料 |
PDF描述 |
|---|---|
| EVAL-ADV7401EBZ | BOARD EVALUATION FOR ADV7401 |
| EVAL-ADV7403EBZ | BOARD EVALUATION FOR ADV7403 |
| EVAL-ADV7510P-ABZ | BOARD EVAL FOR ADV7510 |
| EVAL-ADV7800EB1Z | BOARD EVAL EXTERNAL DDR SD MEM |
| EVAL-ADV7802EB1Z | BOARD EVAL EXTERNAL DDR SD MEM |
相关代理商/技术参数 |
参数描述 |
|---|---|
| EVAL-ADV7197EB | 制造商:Analog Devices 功能描述:EVALUATION BOARD I.C. - Bulk |
| EVAL-ADV7280MEBZ | 制造商:Analog Devices 功能描述:EVALUATION BOARD CSI MIPI OUTPUT |
| EVAL-ADV7281MAEBZ | 制造商:Analog Devices 功能描述:EVALUATION BOARD CSI MIPI OUTPUT |
| EVAL-ADV7281MEBZ | 制造商:AD 制造商全称:Analog Devices 功能描述:10-Bit, 4 Oversampled SDTV Video Decoder with Differential Inputs |
| EVAL-ADV7282MEBZ | 制造商:AD 制造商全称:Analog Devices 功能描述:10-Bit, 4 Oversampled SDTV Video Decoder with Differential Inputs and Deinterlacer |
发布紧急采购，3分钟左右您将得到回复。