FMS6400

FMS6400 Dual Channel Video Drivers with Integrated Filters and Composite Video Summer September 2005 FMS6400 Dual Channel Video Drivers with Integrated Filters and Composite Video Summer Features ■ 7.1 MHz 5th order Y,C filters with composite summer ■ Selectable for 0dB or 6dB gain ■ 50dB stopband attenuation at 27MHz on Y, C and CV outputs ■ Better than 0.1 dB flatness to 4.5MHz on Y,C and CV outputs ■ No external frequency selection components or clocks ■ < 5ns group delay deviation on Y, C and CV outputs ■ AC-Coupled Inputs ■ AC or DC-Coupled Outputs ■ Capable of PAL frequency selection components or clocks ■ 0.3% / 0.2° differential gain/phase on Y,C and CV channels ■ Integrated DC restore circuitry with low tilt ■ Lead (Pb) Free SOIC-8 Package Applications ■ Cable and Satellite set top boxes ■ DVD players ■ Personal Video Recorders (PVR) ■ Video On Demand (VOD) Description The FMS6400 is a dual Y/C 5th order Butterworth lowpass video filter optimized for minimum overshoot and flat group delay. The device also contains a summing circuit to generate filtered composite video. In a typical application, the Y and C input signals from DACs are AC coupled into the filters. Both channels have DC restore circuitry to clamp the DC input levels during video sync. The Y and C channels use separate feedback clamps. The clamp pulse is derived from the Y channel. All outputs are capable of driving 2Vpp, AC or DC coupled, into either a single or dual video load. A single video load ...