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FMS6141 — Low-Cost, Single-Channel 4
th
-Order Standard Definition Video Filter Driver
November 2012
FMS6141
Low-Cost, Single-Channel 4
th
-Order
Standard Definition Video Filter Driver
Features
Single 4th-Order 8 MHz (SD) Filter
Drives Single, AC- or DC-coupled, Video Loads
(2 V
pp
, 150
Ω)
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
Ω)
or dual (75
Ω)
load. DC-coupling the
output removes the need for output coupling capacitors.
The input DC level is offset approximately +280 mV at
单片机
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