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sin x/x Corrected

Delay Equalized Low Pass Filters

Digital Filters for Video Processing  

click here for printable datasheet

This family of filters is similar to the VFL and MVFL Series and is intended for use at the output of a digital to analog converter. Its special feature is that amplitude equalizers have been incorporated to shape the passband for sin x/x correction. The filters below are tabulated for systems using sampling frequencies of 10.74 MHz and 14.32 MHz. 
  • Allen Avionics can custom design this type of filter for other cutoff frequencies and sampling rates
  • VSL Size: 4" x 2" x 1-1/4" in metal cans with BNC Connectors
  • MVSL Size: 4" x 2" x 1/2" in metal cans with P.C.B. Terminals

 
Impedance = 75 Ohms
Attenuation = 40 dB or greater at 1.375 x the cutoff frequency 
Amplitude Deviation = 0.2 dB to the filter passband edge
Maximum Insertion Loss < 2.5 dB at 10 KHz
Maximum Group Delay Distortion = 3% of the midband delay
Delivery from Stock

Series VSL, MVSL Dimensions

 

 

VSL and Miniature MVSL Series

Standard Size Part Number

Miniature Size Part Number

Passband 
Frequency
(MHz)

Min. 40dB
 Frequency
(MHz)

Approximate Passband Delay (Nanoseconds)

Sampling 
Frequency
(MHz)

Flat Loss dB
VSL4P0X3 MVSL4P0X3 4.00 5.51 775 10.74 3.0
VSL4P5X3 MVSL4P5X3 4.50 6.19 675 10.74 4.0
VSL5P2X3 MVSL5P2X3 5.20 7.16 590 10.74 5.0
VSL4P0X4 MVSL4P0X4 4.00 5.51 775 14.32 3.0
VSL4P5X4 MVSL4P5X4 4.50 6.19 675 14.32 4.0
VSL5P2X4 MVSL5P2X4 5.20 7.16 590 14.32 5.0

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