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參數資料
| 型號： | FMS6141 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | Low-Cost, Single-Channel 4th-Order Standard Definition Video Filter Driver |
| 中文描述： | 低成本，單通道四階標準清晰度視頻濾波驅動器 |
| 文件頁數： | 8/11頁 |
| 文件大小： | 284K |
| 代理商： | FMS6141 |
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2006 Fairchild Semiconductor Corporation
FMS6141 Rev. 1.0.0
www.fairchildsemi.com
8
Layout Considerations
General layout and supply bypassing play a major role
in
high-frequency
performance
characteristics. Fairchild offers a demonstration board
for the FMS6141 to guide layout and aid device
evaluation. The demo board is a four-layer board with
full power and ground planes. Following this layout
configuration provides optimum performance and
thermal characteristics for the device. For the best
results, follow the steps and recommended routing rules
listed below.
and
thermal
Recommended Routing/Layout Rules
Do not run analog and digital signals in parallel.
Use separate analog and digital power planes to
supply power.
Traces should run on top of the ground plane at all
times.
No trace should run over ground/power splits.
Avoid routing at 90-degree angles.
Minimize clock and video data trace length
differences.
Include 10μF and 0.1μF ceramic power supply bypass
capacitors.
Place the 0.1μF capacitor within 0.1 inches of the
device power pin.
Place the 10μF capacitor within 0.75 inches of the
device power pin.
For multilayer boards, use a large ground plane to
help dissipate heat.
For two-layer boards, use a ground plane that extends
beyond the device body by at least 0.5 inches on all
sides. Include a metal paddle under the device on the
top layer.
Minimize all trace lengths to reduce series inductance.
Thermal Considerations
Since the interior of most systems, such as set-top
boxes, TVs, and DVD players are at +70oC;
consideration must be given to providing an adequate
heat sink for the device package for maximum heat
dissipation. When designing a system board, determine
how much power each device dissipates. Ensure that
devices of high power are not placed in the same
location, such as directly above (top plane) and below
(bottom plane) each other on the PCB.
PCB Thermal Layout Considerations
Understand the system power requirements and
environmental conditions.
Maximize thermal performance of the PCB.
Consider using 70μm of copper for high-power
designs.
Make the PCB as thin as possible by reducing FR4
thickness.
Use vias in power pad to tie adjacent layers together.
Remember that baseline temperature is a function of
board area, not copper thickness.
Modeling techniques can provide a first-order
approximation.
Power Dissipation
Consider the FMS6141’s output drive configuration
when calculating overall power dissipation. Care must
be taken not to exceed the maximum die junction
temperature. The following example can be used to
calculate the FMS6141’s power dissipation and internal
temperature rise.
T
J
= T
A
+ P
CHANNEL
Θ
JA
where P
CHANNEL =
V
CC
I
CH
+ (V
O
V
O
= 2V
IN
+ 0.280V
I
CH
= I
CC
+ (V
O
/R
L
)
V
IN
= RMS value of input signal
I
CC
= 7mA
V
S
= 5V
R
L
= channel load resistance
2
/R
L
)
The FMS6141 is specified to operate with output
currents typically less than 50mA, which is more than
sufficient for a dual (75
) video load. The internal
amplifiers of the FMS6141 are current limited to a
maximum of 100mA and can withstand a brief-duration
short-circuit condition, but this capability is not guaranteed.
相關PDF資料 |
PDF描述 |
|---|---|
| FMS6141CS | Low-Cost, Single-Channel 4th-Order Standard Definition Video Filter Driver |
| FMS6141CSX | Low-Cost, Single-Channel 4th-Order Standard Definition Video Filter Driver |
| FMS6141S5X | Low-Cost, Single-Channel 4th-Order Standard Definition Video Filter Driver |
| FMS6143CS | Low Cost Three Channel 4th Order Standard Definition Video Filter Driver |
| FMS6143 | Low Cost Three Channel 4th Order Standard Definition Video Filter Driver |
相關代理商/技術參數 |
參數描述 |
|---|---|
| FMS6141_06 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Low-Cost, Single-Channel 4th-Order Standard Definition Video Filter Driver |
| FMS6141CS | 功能描述:有源濾波器 1-Ch 4th Order Std Video Filter Driver RoHS:否 制造商:Maxim Integrated 通道數量:1 截止頻率:150 KHz 電源電壓-最大:11 V 電源電壓-最小:4.74 V 最大工作溫度:+ 85 C 安裝風格:Through Hole 封裝 / 箱體:PDIP N 封裝:Tube |
| FMS6141CSX | 功能描述:有源濾波器 1-Ch 4th Order Std Video Filter Driver RoHS:否 制造商:Maxim Integrated 通道數量:1 截止頻率:150 KHz 電源電壓-最大:11 V 電源電壓-最小:4.74 V 最大工作溫度:+ 85 C 安裝風格:Through Hole 封裝 / 箱體:PDIP N 封裝:Tube |
| FMS6141CSX | 制造商:Fairchild Semiconductor Corporation 功能描述:FILTER DRIVER VIDEO SMD SOIC8 |
| FMS6141S5X | 功能描述:有源濾波器 1-Ch 4th Order Std Video Filter Driver RoHS:否 制造商:Maxim Integrated 通道數量:1 截止頻率:150 KHz 電源電壓-最大:11 V 電源電壓-最小:4.74 V 最大工作溫度:+ 85 C 安裝風格:Through Hole 封裝 / 箱體:PDIP N 封裝:Tube |
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