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Delay Equalized NTSC Lowpass
vfl-mvfl
Digital Low Pass Filters for Video Processing
  • Fast Transition from Passband to Stopband along with Good Stopband Rejection to over 100 MHz
  • Also Used as Anti-Aliasing Pre Filters before Analog to Digital Converters
  • When used as Post-Aliasing Filters in Digital Processing Applications, the Passband can be shaped to correct for sin x/x (See VSL series)  
  • Designed for Analog and Digital Video Filtering
  • Band Limiting of Video Signals
  • Very Low Distortion Due to the Tight Control of Delay in the Passband

Printable HTM Datasheet
Printable .pdf File

 

Maximum Delay Variation = 3% to -.25 dB Frequency
Maximum Passband Ripple = .125 dB. 10 KHz to Passband end
Maximum Insertion Loss < 1 dB at 10 KHz
Impedance = 75 Ohms
VFL Size: 4" x 2" x 1-1/4" in metal cans with BNC Connectors
MVFL Size: 3" x 1-5/8" x 1/2" in metal can with terminals for PC mounting
Delivery from Stock

 

VFL and Miniature MVFL Series
Standard Size
Max. Insertion Loss = 1dB

Part Number

Miniature Size
Max. Insertion Loss = 2dB

Part Number

Max. .25dB
Attenuation 
@ Frequency
(MHz)

Max. 3.0dB
Attenuation 
@ Frequency
(MHz)

Min. 45dB
Attenuation 
@ Frequency
(MHz)

Approximate Passband Delay (Nanoseconds)

VFL1P4

MVFL1P4

1.40

1.54

1.92

1912

VFL1P7 MVFL1P7 1.75 1.92 2.41 1691

VFL2P0

MVFL2P0

2.00

2.19

2.75

1483

VFL2P2 MVFL2P2 2.25 2.45 3.10 1325
VFL2P7 MVFL2P7 2.75 3.00 3.77 1082
VFL3P2 MVFL3P2 3.20 3.50 4.40 928
VFL3P5 MVFL3P5 3.50 3.84 4.82 846
VFL3P8 MVFL3P8 3.80 4.16 5.22 781
VFL4P0 MVFL4P0 4.00 4.38 5.51 741
VFL4P5 MVFL4P5 4.50 4.93 6.19 659

VFL5P0

MVFL5P0

5.00

5.49

6.98

593

VFL5P2 MVFL5P2 5.20 5.70 7.16 570
VFL6P0 MVFL6P0 6.00 6.58 8.27 494
VFL6P5 MVFL6P5 6.50 7.12 8.95 457
 

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Allen Avionics, Inc.
2727 Clinton Street
River Grove, IL  60171
Phone: (708)-453-3238
Fax: (708)-453-0297
E-Mail: Sales@AllenAvionics.com

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