FMS6146 Low-Cost Six-Channel 4th-Order Standard Definition Video Filter Driver

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FMS6146 Low-Cost Six-Channel 4th-Order Standard Definition Video Filter Driver

February 2007

FMS6146 Low-Cost Six-Channel 4th-Order Standard Definition Video Filter Driver
Features
Six 4th-order 8MHz (SD) filters 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 inputs AC- or DC-coupled outputs DC-coupled outputs eliminate AC-coupling capacitors 5V only Robust 8kV ESD protection Lead-free TSSOP-14 package

Description
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 (150) or dual (75) 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).

Applications
Cable set-top boxes Satellite set-top boxes DVD players HDTV Personal Video Recorders (PVR) Video On Demand (VOD)

Functional Block Diagram
IN1
Transparent Clamp
6dB

OUT1

IN2

Transparent Clamp

6dB

OUT2

IN3

Transparent Clamp

6dB

OUT3

IN4

Transparent Clamp

6dB

OUT4

IN5

Transparent Clamp

6dB

OUT5

IN6

Transparent Clamp

6dB

OUT6

8MHz, 4th order

Ordering Information
Part Number
FMS6146MTC14 FMS6146MTC14X
2006 Fairchild Semiconductor Corporation FMS6146 Rev. 1.0.8

Package
TSSOP-14 TSSOP-14

Pb-Free
Yes Yes

Operating Temperture Range
-40 C to 85 C -40 C to 85 C

Packaging Method
Tube Tape and Reel
www.fairchildsemi.com

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FMS6146 DATASHEET