FMS6146: Six Channel 4th Order Standard Definition Video Filter Driver

The FMS6146 Low-Cost Video Filter (LCVF) is intended to replace passive LC filters and drivers with a low-cost integrated device. Six 4th-order filters provide improved image quality compared to typical 2nd or 3rd-order passive solutions. The FMS6146 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 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 +280mV at the output (see Applications section for details).

Features

• Six fourth-order 8MHz (SD) filters
• Drives single,AC- or DC-coupled, video loads (2V_PP, 150Ω)
• Drives dual, AC- or DC-coupled video loads (2V_PP , 75Ω)
• Transparent input clamping
• AC or DC-coupled inputs
• AC or DC-coupled outputs
• DC-coupled outputs eliminate AC-couplingcapacitors
• 5V only
• Robust 8KV ESD protection
• Lead (Pb) Free TSSOP-14 package

Application Notes