FMS6143: Three Channel 4th Order Standard Definition Video Filter Driver

The FMS6143 Low-Cost Video Filter (LCVF) is intended to replace passive LC filters and drivers with a low-cost integrated device. Three 4th-order filters provide improved image quality compared to typical 2nd- or 3rd-order passive solutions.

The FMS6143 may be directly driven by a DC-coupled DAC output or an AC-coupled signal. Internal diode clamps and bias circuitry may be used if AC-coupled inputs are required (see the Applications section for details).

The outputs can drive AC-or DC-coupled single (150Ω) or dual (75Ω) loads. DC-coupling the outputs removes the need for output coupling capacitors. The input DC levels are offset approximately +280 mV at the output (see Applications section for details).

Features

• Three 4th-order 8MHz (SD) filters
• Drives single, AC- or DC-coupled, video loads (2 V_pp, 15 0Ω)
• Drives dual, AC- or DC-coupled, video loads (2 V_pp, 75 Ω )
• Transparent input clamping
• AC-or DC-coupled inputs
• AC-or DC-coupled outputs
• DC-coupled outputs eliminate AC-coupling capacitors
• 5 V only
• Robust 8 kV ESD protection
• Lead-free SOIC-8 package

Application Notes