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MN3870 Datasheet

  • MN3870

  • NTSC-Compatible CCD Comb Filter with Built-in 1 H Video Sign...

  • 6頁(yè)

  • PANASONIC

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CCD Delay Line Series
MN3870S
NTSC-Compatible CCD Comb Filter with Built-in 1 H Video Signal Delay Element
Overview
The MN3870S is a 4 f
SC
CMOS CCD comb filter with
a built-in 4 f
SC
CMOS CCD signal delay element for video
signal processing applications.
It contains such components as a fourfold-frequency
circuit, a shift register clock driver, a CCD analog shift
register switchable between 911, 1 and 908 / 906 stages,
and a resampling output amplifier.
It samples the input using the supplied clock signal with
a frequency of four times the color signal subcarrier fre-
quency (3.58 MHz) and subtracts between the 911- and
1-stage CCD output signals to produce the color signal
comb characteristics for the NTSC system.
It also uses this fourfold frequency to drive a 908- or
906-stage CCD and samples the input to produce, after
adding in the attached filter delay, a delay of 1 H (the
horizontal scan period) when the SW pin is left open.
Pin Assignment
X1
V
BB
N.C.
VGC1
VOC
VINC
N.C.
N.C.
V
SS1
V
DD1
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
PCOUT
&
VCOIN
N.C.
V
SS3
V
DD3
V
DD2
V
SS2
VGC2
SW
VINY
VOY
Features
Single 5.0 V power supply
Low power consumption based on CMOS process
Low EMI levels from clock during driving
True comb filter produced by the subtraction of the
through signal and the 1 H delay signal
( TOP VIEW )
SOP020-P-0300C
Applications
VCRs, Video cameras
1

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