ON FMS6404CSX

Потребительское видеоNTSC, PAL

Overview

The FMS6404CSX 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.

Features

Applications

• Notebook PCs
• Desktop PCs
• PC Docking Stations
• PC Standalone Video Cards
• Consumer, Professional, Automotive
• Industrial Video
• Video Capture, Editing, and Processing
• Genlock Circuits
• Surveillance & Security Video Systems
• Set-Top Boxes (STB) & Digital Video Recorders (DVR)