FMS6146_08 Datasheet, PDF (1/10 Pages) Fairchild Semiconductor – Low-Cost Six-Channel 4th-Order Standard Defi nition Video Filter Driver

FMS6146
Low-Cost Six-Channel 4th-Order
Standard Definition Video Filter Driver
February 2008
Features
■ Six 4th-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-coupling capacitors
■ 5V only
■ Robust 8kV ESD protection
■ Lead-free TSSOP-14 package
Applications
■ Cable set-top boxes
■ Satellite set-top boxes
■ DVD players
■ HDTV
■ Personal Video Recorders (PVR)
■ Video On Demand (VOD)
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 (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).
Functional Block Diagram
IN1
Transparent Clamp
IN2
Transparent Clamp
IN3
Transparent Clamp
6dB
OUT1
6dB
OUT2
6dB
OUT3
IN4
Transparent Clamp
6dB
OUT4
IN5
Transparent Clamp
6dB
OUT5
IN6
Ordering Information
Transparent Clamp
6dB
8MHz, 4th order
OUT6
Part Number
Package Operating Temperture Range
Packaging Method
FMS6146MTC14
TSSOP-14
-40°C to +85°C
FMS6146MTC14X
TSSOP-14
-40°C to +85°C
All packages are lead free per JEDEC: J-STD-020B standard.
© 2006 Fairchild Semiconductor Corporation
FMS6146 Rev. 1.0.9
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