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ML6428CS1 Datasheet

  • ML6428CS1

  • S-Video Filter and 75 з Line Drivers with Summed Composite ...

  • 157.45KB

  • 10頁

  • FAIRCHILD

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www.fairchildsemi.com
ML6428
S-Video Filter and 75鈩?Line Drivers with Summed
Composite Output
Features
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6.7MHz Y and C 鏗乴ters, with CV out for NTSC or PAL
75鈩?cable line driver for Y, C, CV, and TV modulator
43dB stopband attenuation at 27MHz
1dB 鏗俛tness up to 4.8MHz
No external frequency select components or clocks
12ns group delay 鏗俛tness up to 10MHz
5% overshoot on any input edge
AC coupled input and output (ML6428CS-1)
AC coupled input and DC coupled output
(ML6428CS-2)
0.4% differential gain on all channels, 0.4潞 differential
phase on all channels
0.7% total harmonic distortion on all channels
5V 鹵10% operation
DC restore with low tilt
General Description
The ML6428 is a dual Y/C 4th-order Butterworth lowpass
video 鏗乴ter optimized for minimum overshoot and 鏗俛t group
delay. The device also contains a summing circuit to gener-
ate 鏗乴tered composite video.
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.
All outputs must be AC coupled into their loads for the -1
version. The -2 version must be DC coupled. All inputs (-1
and -2 versions) are AC coupled. The Y or C outputs can
drive 2VP-P into a 150鈩?load, while the CV output can drive
2VP-P into 75鈩? Thus the CV output is capable of driving
two independent 150鈩?loads to 2VP-P.
On the CV output, one of the 75鈩?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.
Block Diagram
VCC
2
VCCO
7
YIN
1
4th-ORDER
FILTER
8
BUFFER
YOUT
+
SYNC TIP CLAMP
危
TRANSCONDUCTANCE
ERROR AMP
6
BUFFER
CVOUT
+
CIN
4
4th-ORDER
FILTER
5
BUFFER
COUT
3
GND
REV. 1B April 2003

ML6428CS1 產(chǎn)品屬性

  • 95

  • 集成電路 (IC)

  • 線性 - 視頻處理

  • -

  • 視頻濾波器

  • NTSC，PAL

  • 表面貼裝

  • 8-SOIC（0.154"，3.90mm 寬）

  • 8-SOICN

  • 管件

  • ML6428CS1_NLML6428CS1_NL-ND

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