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參數(shù)資料
| 型號： | TDA4472-A |
| 英文描述： | Video-IF (VIF) with FPLL Demodulation and Quasi Parallel Sound (QPS) Processing |
| 中文描述： | 視頻中頻（資料表格）與FPLL解調(diào)和準(zhǔn)并行聲音（計分制）加工 |
| 文件頁數(shù)： | 7/14頁 |
| 文件大小： | 169K |
| 代理商： | TDA4472-A |
Rev. A1: 26.07.1995
7 (14)
AFC switch
Control voltage:
AFC ”off”
AFC ”on”
Switching current
SIF inputs
Input sensitivity
(RMS value)
Input impedance
Input capacitance
SIF – AGC
IF gain control range
AGC capacitor
Intercarrier output-FM
DC output voltage
Output resistance
Sound IF output voltage,
RMS value (5.5 MHz out-
put voltage)
Weighted signal to noise ra-
tio: (CCIR 468)
Pin 19
see note 6
V
SW
0
3.5
0.8
V
S
V
V
A
I
SW
±
100
Pin 1-2, 27-28
output signal
at pin 24/25: –3 dB
see note 1
see note 1
v
in
80
120
V
R
in
C
in
1.2
2
k
pF
Pin 5
G
v
60
65
10
dB
F
G
AGC
Pin 24
see note 7
V
DC
R
out
v
out
2
V
see note 1
v
in
= 10 mV
150
250
mV
Ref. signal:
v
in
= 10 mV,
FM dev. =
±
27 kHz,
f
mod
= 1 kHz,
tested with the double
FM demod. U2860B,
B/G modulated VIF signal
Black screen: Channel 1/2
Grid pattern: Channel 1/2
Grey screen 50%: Channel
1/2
see note 1 /pin 23/pin24
S/N
S/N
S/N
60/58
54/52
60/57
dB
dB
dB
Ripple rejection
SIF input selector switch
Control voltage
input 1 active
input 2 active
Switching current
RR
35
dB
Pin 3
see note 8
V
SW
2.0
0
V
S
0.8
V
V
A
I
SW
±
100
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