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HDTV Lowpass Filters
page LC_F/hdtv
printable .pdf file

Designed for use in digitization of high definition television signals.

  • Passband amplitude ripple less than ± .05dB
  • Delay distortion less than ± 1.5 nanoseconds
  • Group delay matching included
  • Stopband ratio: 1.475 @ 40 dB
  • Pre and Post filters available
  • Sampling frequency
    • Y channel: 74.15 MHz
    • Cb & Cr channel: 37.125 MHz
  • Several types of packages available
  • 75 Ohm impedance
  • Pre-Filter Insertion Loss: 1 dB maximum
  • Post-Filter Insertion Loss: 3.5 dB maximum
Technical Data
 

Part Number

Cutoff Frequency (MHz)

Stopband Ratio @ 40dB

- 50 dB  
@ Frequency
(MHz)

Sample Rate
(MHz)

- 12 dB
@ Frequency
(MHz)

 Amplitude
 Ripple (dB)		 Delay Distortion to 20 MHz to 30 MHz Typical Group Delay (nano- seconds)
HDTV-30P0-H 30.0 1.475 54.25 - 37.125 ± .05 ± 1 nsec ± 1.5 nsec 95
HDTV-30P0-HS 30.0 1.475 54.25 74.25 37.125 ± .05 ± 1 nsec ± 1.5 nsec 95
 

Part Number

Cutoff Frequency (MHz)

Stopband Ratio @ 40dB

- 50 dB  
@ Frequency
(MHz)

Sample Rate
(MHz)

- 6 dB
@ Frequency
(MHz)

 Amplitude
 Ripple (dB)		 Delay Distortion to 10 MHz to 15 MHz Typical Group Delay (nano- seconds)
HDTV-15P0-H 15.0 1.475 27.125 - 18.56 ± .05 ± 1 nsec ± 1.5 nsec 180
HDTV-15P0-HS 15.0 1.475 27.125 37.125 18.56 ± .05 ± 1 nsec ± 1.5 nsec 180
For post-filters add "S" to part number. Use V, H or M to designate the package style. (click to see dimensions)

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Fax: (516) 747-6724
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