Datasheet > OBYFB

OBYFB

更新时间： 2022-05-11 15:00:56

品牌	Logo	应用领域
智原科技 - FARADAY		LTE
页数	文件大小	规格书
2页	84K
描述
VIDEO OVERSAMPLING SMD FILTERS

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数据手册

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OBYFB 数据手册

OB SERIES

VIDEO OVERSAMPLING SMD FILTERS

· Surface Mount Package

· Flat or Sinx/x 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 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 good amplitude and group delay characteristics

in the passband that meet requirements of CCIR601, but due to the above considerations do not have

significant attenuation below 21 MHz.

Order code

Filter Shape

OBYSB

Lowpass

OBYFB

Lowpass

OBCSB

Lowpass

OBCFB

Lowpass

Impedance

75 W

Sinx/x correction

Sampling Freq.

Yes

27.0 MHz

5.75 MHz

< 0.05 dB

< 0.1 dB

< 6 ns

27.0 MHz

5.75 MHz

< 0.05 dB

< 0.1 dB

< 6 ns

13.5 MHz

2.75 MHz

< 0.05 dB

< 0.1 dB

< 12 ns

10.75 MHz

> 40 dB

110 ns

13.5 MHz

2.75 MHz

< 0.05 dB

< 0.1 dB

< 12 ns

10.75 MHz

> 40 dB

116 ns

End of Passband

Amp. ripple to 5.5 MHz

to 5.75 MHz

G.D. ripple

Start of stopband

Stopband atten. wrt 100 kHz

Delay time nom. at 200 kHz

Aqueous Washable

SMD Reflow Limitations

Package

21.5 MHz

> 40 dB

55 ns

21.5 MHz

> 40 dB

58 ns

Yes

refer to Data Sheet Fara309

DR00325A

FARA084d Page 1 of 2 Jul-03(E)

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