ºìÌÒÊÓƵ

Precision Composite Video Output with Sound Trap and Group Delay Compensation

Obsolete

Overview

The FMS6404 is a single composite video 5th-order Butterworth low-pass video filter optimized for minimum overshoot and flat group delay. The device contains an audio trap that removes video information in a spectral location of the subsequent RF audio carrier. The group delay compensation circuit pre-distorts the signal to compensate for the inherent receiver intermediate frequency (IF) filter’s group delay distortion.In a typical application, the composite video from the DAC is AC coupled into the filter. The CV input has DC-restore circuitry to clamp the DC input levels during video synchronization. The clamp pulse is derived from the CV channel.All outputs are capable of driving 2VPP, AC- or DC-coupled, into either a single or dual video load. A single video load consists of a series 75 Ω impedance matching resistor connected to a terminated 75 Ω line. This presents a total of 150 Ω of loading to the part. A dual load would be two of these in parallel, which presents a total of 75 Ω to the part. The gain of the CV signal is 6dB with 1 VPP input levels. All video channels are clamped during synchronization to establish the appropriate output voltage reference levels.

  • Camcorder
  • DVD
  • Set Top Boxes
  • DSC
  • Video Game Console

  • 7.6 MHz 5th-Order Composite Video Filter
  • 14dB Notch at 4.425 MHz to 4.6 MHz for Sound Trap Capable of Handling Stereo
  • 50dB Stopband Attenuation at 27 MHz on CV Output
  • >0.5dB Flatness to 4.2 MHz on CV Output
  • Equalizer and Notch Filter for Driving RF Modulator with Group Delay of -180ns
  • No External Frequency Selection Components or Clocks
  • <5ns Group Delay on CV Output
  • AC-Coupled Input
  • AC- or DC-Coupled Output
  • Capable of PAL Frequency for CV
  • Continuous Time Low-Pass Filters
  • <1.4% Differential Gain with 0.7° Differential Phase on CV Channel
  • Integrated DC Restore Circuitry with Low Tilt

Product Resources

Product services, tools and other useful resources related to FMS6404

Product List

If you wish to buy products or product samples, please log in to your ºìÌÒÊÓƵ account.

Search

Close Search

ºìÌÒÊÓƵ:

1

Share

Product Groups:

Orderable Parts:

1

Product

Status

CAD Models

Compliance

Package Type

Case Outline

MSL Type

MSL Temp (°C)

Container Type

Container Qty.

ON Target

Resolution

Channels

Disable

VCC (Min) (V)

VCC (Max) (V)

Frequency Response (MHz)

Reference Price

FMS6404CSX

Loading...

Obsolete

CAD Model

Pb

A

H

P

SOIC-8

1

260

REEL

2500

N

Composite

1

No

4.75

5.25

7.6

Price N/A

More Details

Show More

1-25 of 25

ºìÌÒÊÓƵ per page

Jump to :

Product Support

If you're interested to learn about this ºìÌÒÊÓƵ product, contact sales by filling out the form below.