ML6427CS Fairchild Semiconductor, ML6427CS Datasheet

Video ICs Cable Driver/Filter 75Ohm Quad Video

ML6427CS

Manufacturer Part Number

ML6427CS

Description

Video ICs Cable Driver/Filter 75Ohm Quad Video

Manufacturer

Fairchild Semiconductor

Type

Provide DC coupled outputs for certain applicationsr

Datasheets

1.ML6427CS.pdf (17 pages)

2.ML6427CS.pdf (17 pages)

3.ML6427CS.pdf (17 pages)

Specifications of ML6427CS

Operating Supply Voltage

5 V

Maximum Operating Temperature

70 C

Package / Case

SOIC-24

Minimum Operating Temperature

0 C

Mounting Style

SMD/SMT

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

ML6427CS_NL

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GENERAL DESCRIPTION

The ML6427 is a quad 4

reconstruction filter plus quad video amplifier optimized

for minimum overshoot and flat group delay. Each filter

channel has a two-input multiplexer that switches between

two groups of quad video signals. Applications driving

SCART and EVC cables are supported for composite,

component, and RGB video.

ML6427 where they are DC restored. Outputs are AC

coupled and drive 2V

can provide DC coupled outputs for certain applications.

A fifth unfiltered channel is provided to support an

additional analog composite video input. A swapping

multiplexer between the two composite channels allows

the distribution amplifiers to output from either input.

Several ML6427s can be arranged in a master-slave

configuration where an external sync can be used for CV

and RGB outputs.

BLOCK DIAGRAM

P-P

input signals from DACs are AC coupled into the

SYNCIN

SYNCOUT

CV INF A/Y2*

CV INF B/Y3*

R IN A/Y4

R IN B/Y5

G IN A/Y6

G IN B/Y2

B IN A/C1

B IN B/C2

A/B MUX

MUX

P-P

TIMER

into a 150W load. The ML6427

SYNC

*CAN ALSO INPUT SYNC ON GREEN SIGNALS

-order Butterworth lowpass

REQUIRED

SYNC STRIP

TRANSCONDUCTANCE

75W Quad Video Cable Drivers and Filters

UNFILTERED CHANNEL

TIMER

SYNC

ERROR AMP

V CCO RGB

TRANSCONDUCTANCE

–

0.5V

0.75V

V CCO CV

ERROR AMP

4th-ORDER

FEATURES

FILTER

Cable drivers for Peritel (SCART), Enhanced Video

Connector (EVC), and standard video connectors, 75W

cable drivers for CV, S-video, and RGB

7.1MHz CV, RGB, and S-video, NTSC or PAL filters

with mux inputs and output channel mux

Quad reconstruction filter or dual anti-aliasing filter

43dB stopband attenuation at 27MHz

1dB flatness up to 4.8MHz

12ns group delay flatness up to 10MHz

0.4% differential gain, 0.4º differential phase on all

channels

0.4% total harmonic distortion on all channels

Master-slave configuration allows up to 8 multiplexed,

filtered output signals

V CC

–

with Switchable Inputs

0.5V

SWAP CVU

SWAP

MUX

GNDO

SWAP CVF

GND

CV OUT 1/Y OUT A

CV OUT /Y OUT B

ML6427

G OUT /Y OUT D

R OUT /Y OUT C

B OUT /C OUT

PRELIMINARY

August 1999

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