Datasheet > FMS6690

FMS6690

更新时间： 2024-11-22 22:19:47

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		驱动器
页数	文件大小	规格书
10页	97K
描述
Six Channel, 6th Order SD/PS/HD Video Filter Driver

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数据手册

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FMS6690 数据手册

July 2005

FMS6690

Six Channel, 6^thOrder SD/PS/HD Video Filter Driver

Features

Description

■ Three selectable sixth-order 15/32MHz (PS/HD) filters

■ Three fixed sixth-order 8MHz (SD) filters with muxed input

■ Transparent input clamping

The FMS6690 Low Cost Video Filter (LCVF) is intended to

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

device. Six 6th order Butterworth filters provide improved image

quality compared to typical passive solutions. The combination

of low power Standard Definition (SD), Progressive Scan (PS),

and High Definition (HD) filters greatly simplify DVD video out-

put circuitry. Three channels offer fixed SD filters and feature an

additional muxed input, while the other three channels are

selectable between PS and HD filters. The FMS6690 offers a

fixed gain of 6dB.

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

■ AC or DC-coupled inputs

■ AC or DC-coupled outputs

■ DC-coupled outputs eliminate AC-coupling capacitors

■ Low Power

■ 5V only

The FMS6690 may be directly driven by a DC-coupled DAC out-

put or an AC-coupled signal. Internal diode clamps and bias cir-

cuitry may be used if AC-coupled inputs are required (see

applications section for details).

■ Lead (Pb) Free packages - TSSOP-20

Applications

■ Cable and Satellite set top boxes

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 will be offset approxi-

mately +280mV at the output.

■ DVD players

■ HDTV

■ Personal Video Recorders (PVR)

■ Video On Demand (VOD)

Block Diagrams

Transparent Clamp

6dB

SD IN1

SD OUT1

Transparent Clamp

6dB

SD IN2

SD OUT2

SD IN3A

Transparent Clamp

6dB

SD OUT3

SD IN3B

8MHz, 6 order

MUX

A/B

SEL

Transparent Clamp

6dB

PS/HD IN1

PS/HD OUT1

6dB

PS/HD IN2

PS/HD OUT2

6dB

PS/HD IN3

PS/HD OUT3

Selectable

15/32MHz

PS / HD

cSEL

order

FMS6690 Rev. 2A

www.fairchildsemi.com

12 3 4 5 6 7...10

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