参数资料
| 型号： | NCS2566DTBR2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 3/13页 |
| 文件大小： | 0K |
| 描述： | IC AMP VIDEO 3CH SELECT 20-TSSOP |
| 标准包装： | 2,500 |
| 应用： | 重构滤波器 |
| 电路数： | 6 |
| -3db带宽： | 8MHz |
| 电流 - 电源： | 65mA |
| 电流 - 输出 / 通道： | 40mA |
| 电压 - 电源，单路/双路(±)： | 4.7 V ~ 5.3 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 20-TSSOP |
| 包装： | 带卷 (TR) |
NCS2566
http://onsemi.com
11
APPLICATIONS INFORMATION
The NCS2566 6channel video filter driver has been
optimized for Standard and High Definition video
applications covering the requirements of the standards
Composite video (CVBS), SVideo, Component Video
(480i/525i, 576i/625i, 720p/1080i) and related (RGB). The
first 3channels (SD1, SD2, SD3) are dedicated for
Standard Definition, CVBS and SVideo applications for
which the frequency bandwidth required does not exceed 8
MHz. The 3 other channels (SD/HD1, SD/HD2, SD/HD3)
have selectable filters (8 MHz and 34 MHz) for covering
either standarddefinitionlike video applications or High
Definition video applications. These frequencies are
selectable using the pin SD/HD. If the application requires,
the video driver outputs may also be disabled using the
SD EN or SD/HD EN required by the application the pins
SD EN or SD/HD EN.
In the regular mode of operation each channel provides an
internal voltagetovoltage gain of 2 from input to output.
This effectively reduces the number of external components
required as compared to discrete approaches implemented
with standalone op amps. An internal level shifter is
employed shifting up the output voltage by adding an offset
of 200 mV. This prevents sync pulse clipping and allows
DCcoupled output to the 150
W video load. In addition the
NCS2566 integrates a 6thorder Butterworth filter for each
channel. This allows rejection of aliases or unwanted
oversampling effects produced by the video DAC.
Similary for DVD recorders which uses an ADC, this
antialiasing filter (reconstruction filter) will avoid picture
quality issues and will aide filtration of parasitic signals
caused by EMI interference.
A builtin diodelike clamp is used in the chip for each
channel to support the ACcoupled mode of operation. The
clamp is active when the input signal goes below 0 V.
The builtin clamp and level shifter allow the device to
operate in different configuration modes depending on the
DAC output signal level and the input common mode
voltage of the video driver. When the configuration is
DCCoupled at the Inputs and Outputs the 0.1
mF and
220
mF coupling capacitors are no longer used and the
clamps are in that case inactive; this configuration provides
a low cost solution which can be implemented with few
external components.
The input is ACcoupled when either the inputsignal
amplitude goes over the range 0 V to 1.4 V or if the video
source requires such a coupling. In some circumstances it
may be necessary to autobias signals with the addition of
a pullup and pulldown resistors or only pullup resistor
(Typical 7.5 M
W combined with the internal 800 kW
pulldown) making the clamp inactive.
The output ACcoupling configuration is advantageous
for eliminating DC ground loop, but may have the drawback
of increasing sensitivity to video line or field tilt issues if the
output coupling capacitor is too small. DC ground loop with
the drawback of making the device more sensitive to video
line or field tilt issues in the case of a too low output coupling
capacitor. In some cases it may be necessary to increase the
nominal 220
mF capacitor value.
All the device pins are protected against electrostatic
discharge at a level of 4 kV HBM and 8 kV according to
IEC6100042. This feature has been considered with a
particular attention with ESD structure able to sustain the
typical values requested by the systems like Set Top Boxes
or Blue-Ray players. This parameter is particularly
important for video driver which usually constitutes the last
stage in the video chain before the video output connector.
The IEC61000-4-2 standard has been used to test our
devices in the real application environment. Test
methodology can be provided on request.
相关PDF资料 |
PDF描述 |
|---|---|
| NCS8353MNTXG | 20W CLASS D AUDIO AMP 32QFN |
| NCV2200SN2T1G | IC COMPARATOR COMPL SOT-23-5 |
| NE521N | IC COMPARATOR DUAL DIFF 14-DIP |
| NE570DR2 | IC COMPANDOR DUAL GAIN 16-SOIC |
| NE592N14G | IC AMP VIDEO 2STAGE DIFF 14-DIP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| NCS-256-Ad | 制造商:Nanaboshi Electric Mfg Co Ltd 功能描述:Bulk |
| NCS-256-AdF | 制造商:Nanaboshi Electric MFG 功能描述:6 25 A_v^ X[qitcj h n_ 250V 5A 2000M 3m 1800V/1min. +120 -40 / jbPbL Bulk |
| NCS-256-P | 制造商:Nanaboshi Electric Mfg Co Ltd 功能描述:Conn Circular F 6 POS Solder ST Cable Mount 6 Terminal 1 Port Bulk |
| NCS-256-PM | 制造商:Nanaboshi Electric Mfg Co Ltd 功能描述:Conn Circular M 6 POS Solder ST Cable Mount 6 Terminal 1 Port Bulk |
| NCS-256-R | 制造商:Nanaboshi Electric Mfg Co Ltd 功能描述:Conn Circular M 6 POS Solder ST Panel Mount 6 Terminal 1 Port Bulk |
发布紧急采购，3分钟左右您将得到回复。