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FMS6346 • Rev. 1.0.5

October 2009

FMS6346

Six Channel, 6th-Order SD/HD Video Filter Driver

Features

Three selectable sixth-order 8/32MHz (SD/HD) filters

Three fixed sixth-order 8MHz (SD) filters

Transparent input clamping

Single video load drive (2Vpp, 150Ω, AV = 6dB)

AC- or DC-coupled inputs

AC- or DC-coupled outputs

DC-coupled outputs eliminate AC-coupling capacitors

Low power

5V only

Robust (12kV HBM) output ESD protection

Lead-free package - TSSOP-20

Applications

Cable and satellite set-top boxes

DVD players

HDTV

Personal Video Recorders (PVR)

Video On Demand (VOD)

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Description

The FMS6346 Low Cost Video Filter (LCVF) is intended

to replace passive LC filters and drivers with a low-cost

integrated device. Six sixth-order Butterworth filters pro-

vide improved image quality compared to typical passive

solutions. The combination of low-power Standard-Defini-

tion (SD) and High-Definition (HD) filters greatly simplify

DVD video output circuitry. Three channels offer fixed SD

filters, while the other three are selectable between SD

and HD filters.

The FMS6346 offers a fixed gain of 6dB. The FMS6346

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)

video loads. DC-coupling the outputs removes the need

for output coupling capacitors. The input DC levels are

offset approximately +280mV at the output.

Ordering Information

Part Number

Gain Option

Operating

Temperature

Eco Status

Package

Packing Method

FMS6346MTC20X

6dB

0°C to 70°C

RoHS

TSSOP-20

2500 Units on

Tape and Reel

.

SD IN1

Selectable

8/32MHz

6th order

6d

B

Transparent Clamp

6d

B

Transparent Clamp

6d

B

Transparent Clamp

6d

B

Transparent Clamp

6d

B

Transparent Clamp

6d

B

Transparent Clamp

8MHz, 6th order

SD/HD

SD IN2

SD IN3

SD OUT1

SD OUT2

SD OUT3

SD/HD IN1

SD/HD IN2

SD/HD IN3

SD/HD OUT2

SD/HD OUT3

SD/HD OUT1

Figure 1. Block Diagram