Datasheet > ML6428CS-3

ML6428CS-3

更新时间： 2024-11-30 22:24:27

品牌	Logo	应用领域
MICRO-LINEAR		有源滤波器驱动器光电二极管 LTE
页数	文件大小	规格书
11页	243K
描述
S-Video Filter and 75ヘ Line Drivers with Summed Composite Output

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数据手册

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ML6428CS-3 数据手册

ML6428 S-Video Filter and 75W Line Drivers with

Summed Composite Output

GENERAL DESCRIPTION

FEATURES

The ML6428 is a dualY/C 4th-order Butterworth lowpass

video filter optimized for minimum overshoot and flat

group delay. The device also contains a summing circuit

to generate filtered composite video.

■ 6.7MHz Y and C filters, with CV out for NTSC or PAL

■ 75W cable line driver for Y, C, CV, and TV modulator

■ 43dB stopband attenuation at 27MHz

The Y and C input signals from DACs are AC coupled into

the ML6428. Both channels have DC restore circuitry to

clamp the DC input levels during video sync. The Y

channel uses a sync tip clamp. The CV and the C

channels share a feedback clamp.

■ 1dB flatness up to 4.8MHz

■ No external frequency select components or clocks

■ 12ns group delay flatness up to 10MHz

■ 5% overshoot on any input edge

All outputs must be AC coupled into their loads for the -1

and -3 versions. The -2 and -4 versions are DC coupled.

All inputs (-1, -2, -3 and -4 versions) are AC coupled. The

Y or C outputs can drive 2VP-P into a 150W load, while

the CV output can drive 2VP-P into 75W. Thus the CV

output is capable of driving two independent 150W loads

to 2VP-P.

■ AC coupled input and output (ML6428CS-1 and -3)

■ AC coupled input and DC coupled output

(ML6428CS-2 and -4)

On the CV output, one of the 75W loads can be shorted to

ground with no loss of drive to the remaining load. The Y,

C and CV channels have a gain of 2 (6dB) with 1VP-P

input levels.

■ 0.4% differential gain on all channels, 0.4º differential

phase on all channels

■ 0.7% total harmonic distortion on all channels

■ 5V ±10% operation

■ DC restore with low tilt

BLOCK DIAGRAM

VCC

VCCO

4th-ORDER

FILTER

YIN

YOUT

BUFFER

SYNC TIP CLAMP

CVOUT

TRANSCONDUCTANCE

ERROR AMP

4th-ORDER

FILTER

CIN

COUT

BUFFER

GND

DATASHEET

June, 2000

12 3 4 5 6 7...11

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与ML6428CS-3相关器件

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