The FMS6400-1 is a dual Y/C 5^th-order Butterworth lowpass video filter optimized for minimum overshoot and flat group delay. The device 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 DCrestore 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 2V_PP, AC or DC coupled, into either a single or dual video load. A single video load consists of a series-75W impedancematching resistor connected to a terminated 75W line. This presents a total of 150W of loading to the part. A dual load is two of these in parallel, which presents a total of 75W to the part. The gain of the Y, C, and CV signals can be selected for 0dB or 6dB with 1V_PP input levels. All video channels are clamped during sync to establish the appropriate output voltage reference levels.

• 5.0 MHz 5^th-Order Y, C filters with Composite Summer
• Selectable 0dB or 6dB Gain
• 50dB Stop-Band Attenuation at 27MHz on Y, C, and CV Outputs
• No External Frequency Selection Components or Clocks
• AC-Coupled Inputs
• AC-or DC-Coupled Outputs
• Continuous Time Low-Pass Filters
• 0.4% / 0.4° Differential Gain/Phase on Y, C, and CV Channels
• Integrated DC-Restore Circuitry with Low Tilt
• Lead (Pb) Free SOIC-8 Package

• Cable Set-Top Boxes
• Satellite Set-Top Boxes
• DVD Players
• Personal Video Recorders (PVR)
• Video On Demand (VOD)