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参数资料
| 型号： | FMS6410CS |
| 厂商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分类： | 音频／视频放大 |
| 英文描述： | Dual Channel Video Drivers with Integrated Filters and Composite Video Summer |
| 中文描述： | 2 CHANNEL, VIDEO AMPLIFIER, PDSO8 |
| 封装： | SOIC-8 |
| 文件页数： | 3/9页 |
| 文件大小： | 110K |
| 代理商： | FMS6410CS |
DATA SHEET
FMS6410
REV. 2a February 2004
3
Functional Description
Introduction
The FMS6410 is a dual monolithic continuous time video
lter designed for reconstructing the luminance and chromi-
nance signals from an S-Video D/A source. The Composite
video output is generated by summing the ltered Y and C
outputs. The chip is intended for use in applications with AC
coupled inputs and AC coupled outputs (See Figure 1). The
reconstruction lters approximate a 4th-order Butterworth
characteristic with an optimization toward low overshoot and
at group delay. Y, C, and CV outputs are capable of driving
2VP-P into AC coupled 150
video loads with up to 35pF of
load capacitance at the output pin. All channels are clamped
during sync to establish the appropriate output voltage swing
range. Thus the input coupling capacitors do not behave
according to the conventional RC time constant. Clamping
for all channels settles to less than 10mv within 5ms of a
change in video input sources. In most applications the input
coupling capacitors are 0.1F. The Y and C inputs typically
sink 1A during active video, which nominally tilts a
horizontal line by about 2mV at the Y output. During sync,
the clamp typically sources 20A to restore the DC level.
The net result is that the average input current is zero.
Any change in the input coupling capacitor’s value will
inversely alter the amount of tilt per line. Such a change will
also linearly affect the clamp response times. This product is
robust and stable under all stated load and input conditions.
Capacitive bypassing of VCC directly to ground ensures this
performance.
Luminance (Y) I/O
The luma input is driven by either a low impedance source of
1VP-P or the output of a 75
terminated line. The input is
required to be AC coupled via a 0.1F coupling capacitor
which allows for a settling time of 5ms. The luma output is
capable of driving an AC coupled 150
load at 2VP-P, or
1VP-P into a doubly terminated 75
load. Up to 35pF of
load capacitance (at the output pin) can be driven without
stability or slew issues. The output is AC coupled with a
220F or larger AC coupling capacitor.
Chrominance (C) I/O
The chroma input is driven by a low impedance source of
0.7VP-P or the output of a 75
terminated line. The input is
required to be AC coupled via a 0.1F coupling capacitor
which allows for a clamp setting time of 5ms. The chroma
output is capable of driving an AC coupled 150
load at
2VP-P, or 1VP-P into a doubly terminated 75
load. Up to
35pF of load capacitance can be driven without stability or
slew issues. A 0.1F AC coupling capacitor is recommended
at the output. Since chrominance signals do not contain
low frequency components, the smaller 0.1F cap is
recommended instead of the 220F cap to reduce circuit
cost.
Composite Video (CV) Output
The composite video output is capable of driving 2 loads to
2VP-P. It is intended to drive a TV and a VCR. Either the TV
input or the VCR input can be shorted to ground and the
other output will still meet specications. Up to 35pF of load
capacitance (at the output pin) can be driven without stability
or slew issues.
DC Coupled Output Applications
The 220F capacitor coupled with the 150
termination
forms a high pass lter that blocks the DC while passing the
video frequencies and avoiding tilt. Lower values such as
10F would create a problem. By AC coupling, the average
DC level is zero. Thus, the output voltages of all channels
will be centered around zero. Alternately, DC coupling the
output of the FMS6410 is allowable. There are several
tradeoffs: The average DC level on the outputs will be 2V;
Each output will dissipate an additional 40mW nominally;
The application will need to accommodate a 1V DC offset
sync tip; And it is recommended to limit each output to one
150
load.
相关PDF资料 |
PDF描述 |
|---|---|
| FMS6410CSX | Dual Channel Video Drivers with Integrated Filters and Composite Video Summer |
| FMS6413 | Single Channel Video Driver with Integrated Filter and Clamp |
| FMS6414CS | Dual Channel Video Drivers with Integrated Filters |
| FMS6414CSX | Dual Channel Video Drivers with Integrated Filters |
| FMS6414 | Dual Channel Video Drivers with Integrated Filters |
相关代理商/技术参数 |
参数描述 |
|---|---|
| FMS6410CS_NL | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Dual Channel Video Drivers with Integrated Filters |
| FMS6410CS_Q | 功能描述:视频 IC Video Driver Dual Channel RoHS:否 制造商:Fairchild Semiconductor 工作电源电压:5 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-28 封装:Reel |
| FMS6410CSX | 功能描述:视频 IC Video Driver Dual Channel RoHS:否 制造商:Fairchild Semiconductor 工作电源电压:5 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-28 封装:Reel |
| FMS6410CSX_NL | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Dual Channel Video Drivers with Integrated Filters |
| FMS6413 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Single Channel Video Driver with Integrated Filter and Clamp |
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