TDA4472-MFLG3 반도체 회로 부품 판매점
Video-IF and Quasi Parallel Sound Processing
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 TEMIC Semiconductors |
TDA4472-M
Video-IF and Quasi Parallel Sound Processing
Description
The TDA4472 is an integrated bipolar circuit for video/
sound IF (VIF/SIF) signal processing in TV/VCR and
multimedia applications. The circuit processes all TV
video IF signals with negative modulation (e.g., B/G
standard), and the FM/NICAM sound IF signals.
Features
D 5 V supply voltage; low power consumption
D Active carrier generation by FPLL principle
(frequency-phase-locked-loop) for true
synchronous demodulation
D Very linear video demodulation, good pulse response
and excellent intermodulation figures
D VCO circuit operates at picture carrier frequency
D Alignment-free AFC without external reference
circuit, polarity of the AFC curve is switchable
D VIF-AGC with peak sync. detection
D Tuner AGC with adjustable take over point
D Alignment-free quasi parallel sound (QPS) mixer for
FM/NICAM sound IF signals
D Intercarrier output signal is gain controlled (necessary
for digital sound processing)
D Separate SIF-AGC with average detection
D Two independent SIF inputs
D Package and relevant pinning is compatible with the
multistandard version TDA4470, which simplifies the
design of an universal IF module
Package: SDIP28, SO28
Ordering Information
Extended Type Number
TDA4472-MSD
TDA4472-MFLG3
Package
SDIP28
SO28
Remarks
Delivery in taped form
TELEFUNKEN Semiconductors
Rev. A2, 15-Oct-96
Preliminary Information
1 (14)
TDA4472-M
Block Diagram
Offset
comp.
(optional)
Loop
filter
VCO
ÏÏAFC
ÏÏswitch
ÏÏ26
FPL
L
VIF amp
6
ÏÏÏVIF 7
ÏCAGC 8
AGC
(VIF)
ÏÏÏTuner
11
Tuner
10 AGC
Take over point
SIF 2
Ï27
Ï28
ÏInput switch
Ï3
ÏÏÏÏÏÏSIF 1
1
2
5
CAGC
ÏÏ18 2ÏÏ0 ÏÏ ÏÏ21
0° VCO
+
90° phase shift
Video
det.
ÏÏÏÏ19
ÏAFC 22
AFC
Ï12
ÏÏ4,9,16
Video
SIF amp
FM det.
Supply
23
ÏÏÏ17
ÏÏÏÏVS
CRef
24
ÏÏ Intercarrier
(FM / NICAM)
AGC
(SIF)
94 8719
Figure 1. Block diagram
2 (14)
TELEFUNKEN Semiconductors
Preliminary Information
Rev. A2, 15-Oct-96
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국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
