Datasheet > OAYFA

OAYFA

更新时间： 2024-09-26 05:55:47

品牌	Logo	应用领域
智原科技 - FARADAY		LTE
页数	文件大小	规格书
2页	59K
描述
VIDEO OVERSAMPLING SMD FILTERS

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中文翻译

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数据手册

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OAYFA 数据手册

OA SERIES

VIDEO OVERSAMPLING SMD FILTERS

· Surface mount compatibility

· Flat or Sinx/x versions

· Small size, low cost

· Luminance and Chrominance versions

With reduced analogue filter costs resulting from oversampling techniques, there is an increased

need for manufacturing facilities to avoid the large production costs associated with the presently

available through hole packages. The Faraday OA range of oversampling filters can be used in

surface mount assembly lines allowing vacuum pick up and reflow.

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 and 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.

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 have significant attenuation below 21 MHz.

Order code:

OAYSA

OAYFA

OACSA

OACFA

Impedance

75W

Sinx/x correction

Sampling Freq.

End of Passband

Amp. ripple

Yes

27.0 MHz

5.75 MHz

< 0.25 dB

< 10 ns

21.5 MHz

27.0 MHz

5.75 MHz

< 0.12 dB

< 6 ns

13.5 MHz

2.75 MHz

< 0.30 dB

< 20 ns

13.5 MHz

2.75 MHz

< 0.12 dB

< 12 ns

G.D. ripple

Start of stopband

21.5 MHz

> 40 dB

30 ns

10.75 MHz

> 40 dB

50 ns

10.75 MHz

> 40 dB

58 ns

Stopband atten. wrt 100 kHz > 40 dB

Delay time nom. at 200 kHz 27 ns

Package

DR00171A

FARA068.DOC Page 1 of 2 Jun-99(A)

中文翻译

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