FMS6141

FMS6141 -- Low-Cost, Single-Channel 4th-Order Standard Definition Video Filter Driver

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FMS6141 -- Low-Cost, Single-Channel 4th-Order Standard Definition Video Filter Driver

December 2006

FMS6141 Low-Cost, Single-Channel 4th-Order Standard Definition Video Filter Driver
Features
Single 4th-Order 8MHz (SD) Filter Drives Single, AC- or DC-coupled, Video Loads (2Vpp, 150) Drives Dual, AC- or DC-coupled, Video Loads (2Vpp, 75 ) Transparent Input Clamping AC- or DC-Coupled Input AC- or DC-Coupled Output DC-Coupled Output Eliminates AC-Coupling Capacitors Single Supply Robust 8kV ESD Protection Lead-Free Packages: SOIC-8 or SC70-5

Description
The FMS6141 Low-Cost Video Filter is intended to replace passive LC filters and drivers with a low-cost integrated device. The 4th-order filter provides improved image quality compared to typical 2nd or 3rd-order passive solutions. The FMS6141 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 an AC-coupled input is required (see Application Information for details). The FMS6141 s output can drive an AC- or DC-coupled single (150 ) or dual (75 ) load. DC-coupling the output removes the need for output coupling capacitors. The input DC level is offset approximately 280mV at the output (see Application Information for details).

Related Applications Notes
AN-6041 PCB Layout Considerations for Video Filter / Drivers AN-6024 FMS6xxx Product Series Understanding Analog Video Signal Clamps, Bias, DC-Restore, and AC or DC Coupling Methods

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

Functional Block Diagram

VIDEOIN

Transparent Clamp

VIDEOOUT

8MHz, 4th-order
Figure 1. FMS6141 Block Diagram

2006 Fairchild Semiconductor Corporation FMS6141 Rev. 1.0.1

www.fairchildsemi.com