參數(shù)資料
型號(hào)： TDA8120B
廠商： 意法半導(dǎo)體
英文描述： MULTISTANDARD VIDEO AND SOUND IF SYSTEM
中文描述： 多標(biāo)準(zhǔn)視頻和聲音如果系統(tǒng)
文件頁(yè)數(shù)： 1/6頁(yè)
文件大?。?/td> 204K
代理商： TDA8120B
TDA8120B
MULTISTANDARD VIDEO AND SOUND IF SYSTEM
.
GAIN CONTROLLED IF AMPLIFIER
.
VIF
50MHz
.
SYNCHRONOUS DETECTOR
.
WHITE SPOTINVERTER
.
VERY LOWDIFFERENTIAL ERROR
.
VERY LOWPHASE ERROR
.
INTERNAL AGC SWITCH (B/G - L)
.
AGC TOP. SYNCH. FOR STANDARD B/G
.
AGC TOP WHITE FOR STANDARD L
.
QUASI SPLIT SOUND FOR STANDARD B/G
.
SOUND DETECTOR FOR STANDARD L
.
VIDEO MUTING FACILITY
.
SEPARATEDSOUND OUTPUT
.
OPERATES WITHOUT EXTERNAL GATING
PULSE
October 1993
OPERATING
FREQUENCY
UP
TO
DESCRIPTION
The TDA8120B is a monolithic IC for TV video IF
and Sound IF amplification and demodulationthat
can operate with all the TV standards.
The Video IF section can handlenegative(B/G) or
positive (L) modulated video signals by means of
DC switching.
DIP24
(Plastic Package)
ORDER CODE :
TDA8120B
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
24
23
22
21
11
12
AF AM OUT
CARRIER TUNING
SUPPLYVOLTAGE
2nd IF SOUND OUT (QSS)
GND
VIDEO OUTPUT
SUPPLYVOLTAGE
AGC TIME CONSTANT
CARRIER TUNING
V
S1
T
2V
T
2S
T
1S
V
S2
QSS OR AM INPUT
GND
VIDEO IF INPUT
STANDARD SWITCH
AGC TIME CONSTANT
AGC TIME CONSTANT
AGC TIME CONSTANT
AND VIDEO MUTING
TUNER AGC OUTPUT
TUNER AGC DELAY
T
1V
8
PINCONNECTIONS
The Sound IF section acts as a Quasi Split Sound
(QSS) subsystem in B/G transmission and allows
a secondSound IF with high rejectionof the video
information.
The DCswitch canmodify the SoundIF configura-
tion to process AM modulated Sound signals (L).
TheTDA8120Bisassembledina24pindualinline
powerpackage.
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