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參數(shù)資料
| 型號(hào)： | 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(jì)分制）加工 |
| 文件頁(yè)數(shù)： | 6/14頁(yè) |
| 文件大小： | 169K |
| 代理商： | TDA4472-A |
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Rev. A1: 26.07.1995
6 (14)
IF slip-tuner AGC
IF input signal for mini-
mum take over point
IF input signal for maxi-
mum take over point
Variation of the take over
point by temperature
FPLL and VCO
Max. oscillator frequency
Vision carrier capture range
current I
tun
10% to 90%
R
top
= 10 k (V
top
= 4.5 V)
G
IF
v
in
8
10
4
dB
mV
R
top
= 0 (V
top
= 0.8 V)
v
in
40
mV
T
amb
= 55
°
C
VIF-AGC: G
v
= 46 dB
v
in
2
3
dB
Pin 18, 20, 21, 26
for carrier generation
f
vco
= 38.9 MHz
C
vco
= 6.8 pF
see note 4,
Τ
amb
= 55
°
C,
C
vco
= 6,8 pF,
f
vco
= 38.9 MHz
f
vco
f
cap
70
±
1.5
MHz
MHz
±
2
Oscillator drift (free run-
ning) as function of tem-
perature
f/
T
–0.3
%
Video output
Output current – source
Pin 12
– sunk
±
I
12
2
5
3
mA
mA
Output resistance
Video output signal
Sync level
Zero carrier level
(ultra white level)
Supply voltage influence
on the ultra white level
Video bandwidth (–3 dB)
Video frequency response
over the AGC range
Differential gain error
Differential phase error
Intermodulation
f = 1.07 MHz
Video signal to noise ratio
Residual vision carrier fun-
damental wave 38.9 MHz
and second harmonic
77.8 MHz
Lower limiting level
Upper limiting level
Ripple rejection
AFC output
Control slope
Frequency drift by temper-
ature
see note 1
peak to peak value
R
out
v
o
,
vid
V
sync
V
DC
100
2.2
1.8
2.0
1.2
3.4
V
V
V
V
8
= 3 V
V/
V
1
%/V
R
L
≥
1 k , C
L
≥
50 pF
B
Β
6
8
MHz
dB
2.0
DG
DP
a
IM
2
2
60
5
5
%
deg
dB
see note 5
52
weighted, CCIR-567
S/
N
v
res1
56
60
2
dB
mV
10
below sync level
above ultra white level
see note 1 /pin 23/pin 12
V
lim1
V
lim
2
RR
400
600
mV
mV
dB
35
Pin 22
I/
f
0.7
0.25
A/kHz
%
related to the picture
carrier frequency
0.6
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