FL676 [FARADAY]
Video Oversampling Filters; 视频过采样滤波器
| 型号： | FL676 |
| 厂家： | 
FARADAY TECHNOLOGY |
| 描述： | Video Oversampling Filters |
| 文件： | 总2页 (文件大小：61K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Video Oversampling Filters
SIL RANGE
Features
·
·
Space saving SIL package
Sinx/x Selectable or Flat versions
·
·
Small size, low cost
Luminance and Chrominance versions
This range of analogue filters has been designed for use in conjunction with a half band
interpolating/decimating filter such as the TRW2242 or with the many encoder chips available which employ
digital filtering combined with an output D to A converter. This type of digital filtering has good attenuation
between the frequencies of Fs/4 and 3Fs/4 where Fs is the Master Clock rate. When the normal clock rate of
27 MHz is used for the luminance channel the signal can be expected to have insignificant energy between
6.75 MHz and 20.25 MHz.
An analogue filter is required to attenuate the clock and sideband to reconstruct the signal. In order to
preserve the integrity of the signal these filters have a good amplitude and group delay characteristics in the
passband, similar to the requirements of CCIR601 but due to the above considerations do not need
significant attenuation below 21 MHz.
Order code
FL676
75 W
FL714
FL677
75 W
FL715
Impedance
75 W
75 W
Sinx/x correction
Sampling Frequency
End of Passband
Amp. Ripple
No
Selectable
27.0 MHz
5.75 MHz
< 0.1 dB
< ± 0.2 dB
< 6 ns
No
Selectable
13.5 MHz
2.75 MHz
< 0.1 dB
< ± 0.2 dB
< 12 ns
27.0 MHz
5.75 MHz
< 0.1 dB
-
13.5 MHz
2.75 MHz
< 0.1 dB
-
Flat
Sinx/x1
Flat
G.D. ripple
< 6 ns
-
< 12 ns
-
Sinx/x
< 10 ns
< 20 ns
Start of stopband
Stopband atten.2
Delay time nom.3
Aqueous Washable
Package
21.5 MHz
>40 dB
30 ns
21.5 MHz
> 40 dB
27 ns
10.75 MHz
> 40 dB
58 ns
10.75 MHz
> 40 dB
50 ns
Yes
Yes
Yes
Yes
DR00034A
DR00064B
DR00034A
DR00064B
1 Sinx/x amplitude ripple measured wrt 100 kHz
2 Stopband attenuation measured wrt 100 kHz
3 Nominal delay time measured at 200 kHz
Other package sizes and styles are available
© Faraday Technology. As part of continual product improvement the specifications, details and dimensions shown in this publication are subject to change without notice
Fara070d
Page 1 of 2
Aug-05(C)
PACKAGE DETAIL
Faraday TechnologyLtd.
Croft Road Industrial Estate,
Newcastle, Staffordshire
ST5 0QZ. England.
Tel:
Fax:
Email:
Web site:
+ 44 (0)1782 661501
+ 44 (0)1782 630101
sales@faradaytech.co.uk
http://www.faradaytech.co.uk
Aug-05(C)
Fara070d
Page 2 of 2
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