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| 型号： | AD9883ABSTZ-RL110 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 18/28页 |
| 文件大小： | 0K |
| 描述： | IC INTERFACE FLAT 110MHZ 80LQFP |
| 标准包装： | 1 |
| 应用： | 显示器，监控器，电视 |
| 接口： | 模拟 |
| 电源电压： | 3 V ~ 3.6 V |
| 封装/外壳： | 80-LQFP |
| 供应商设备封装： | 80-LQFP（14x14） |
| 包装： | 标准包装 |
| 安装类型： | 表面贴装 |
| 其它名称： | AD9883ABSTZ-RL110DKR |
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REV. B
AD9883A
–25–
It is also recommended to use a single ground plane for the entire
board. Experience has repeatedly shown that the noise perfor-
mance 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 at least place a single ground
plane under the AD9883A. The location of the split should
be at the receiver of the digital outputs. 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 resis-
tance). An example of a current loop:
POWER PLANE
AD9883A
DIG
ITA
L
O
U
T
P
U
T
R
AC
E
A
N
A
L
O
G
RO
UN
D P
LAN
E
DIG
ITAL
GROUN
D PLANE
DIGITAL DAT
A RE
CEIV
ER
Figure 13. Current Loop
PLL
Place the PLL loop filter components as close to the FILT pin
as possible.
Do not place any digital or other high frequency traces near
these components.
Use the values suggested in the data sheet with 10% tolerances
or less.
Outputs (Both Data and Clocks)
Try to minimize the trace length that 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 series resistor of value 22
to 100 can suppress reflec-
tions, reduce EMI, and reduce the current spikes inside of the
AD9883A. However, if 50
traces are used on the PCB, the
data outputs should not need resistors. A 22
resistor on the
DATACK output should provide good impedance matching that
will reduce reflections. If series resistors are used, place them as
close to the AD9883A pins as possible (although try not to add vias
or extra length to the output trace in order to get the resistors closer).
If possible, limit the capacitance that each of the digital outputs
drives to less than 10 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 will
increase the current transients inside of the AD9883A, creating
more digital noise on its power supplies.
Digital Inputs
The digital inputs on the AD9883A were designed to work with
3.3 V signals, but are tolerant of 5.0 V signals. Therefore, no
extra components need to be added if using 5.0 V logic.
Any noise that gets onto the Hsync input trace will add jitter to
the system. Therefore, minimize the trace length and do not run
any digital or other high frequency traces near it.
Voltage Reference
Bypass with a 0.1
F capacitor. Place as close to the AD9883A
pin as possible. Make the ground connection as short as possible.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD9883ABSTZ-RL140 | 功能描述:IC INTERFACE FLAT 140MHZ 80LQFP RoHS:是 类别:集成电路 (IC) >> 接口 - 专用 系列:- 标准包装:3,000 系列:- 应用:PDA，便携式音频/视频，智能电话 接口:I²C，2 线串口 电源电压:1.65 V ~ 3.6 V 封装/外壳:24-WQFN 裸露焊盘 供应商设备封装:24-QFN 裸露焊盘（4x4） 包装:带卷 (TR) 安装类型:表面贴装 产品目录页面:1015 (CN2011-ZH PDF) 其它名称:296-25223-2 |
| AD9883AKST-1 | 制造商:Analog Devices 功能描述: |
| AD9883AKST-110 | 制造商:Analog Devices 功能描述:ADC Triple 110Msps 8-bit Parallel 80-Pin LQFP 制造商:Rochester Electronics LLC 功能描述:110MHZ ANALOG INTERFACE FOR SGA FPD - Bulk 制造商:Analog Devices 功能描述:IC INTERFACE GRAPHIC |
| AD9883AKST-140 | 制造商:Analog Devices 功能描述:ADC Triple 140Msps 8-bit Parallel 80-Pin LQFP 制造商:Analog Devices 功能描述:IC INTERFACE ANALOG |
| AD9883AKSTZ-110 | 功能描述:IC FLAT PANEL INTERFACE 80-LQFP RoHS:是 类别:集成电路 (IC) >> 接口 - 专用 系列:- 特色产品:NXP - I2C Interface 标准包装:1 系列:- 应用:2 通道 I²C 多路复用器 接口:I²C，SM 总线 电源电压:2.3 V ~ 5.5 V 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:剪切带 (CT) 安装类型:表面贴装 产品目录页面:825 (CN2011-ZH PDF) 其它名称:568-1854-1 |
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