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參數(shù)資料
| 型號(hào)： | TDA5670-5X |
| 廠商： | SIEMENS A G |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | Video Modulator for FM/AM-Audio with PLL-Output |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO20 |
| 文件頁數(shù)： | 8/22頁 |
| 文件大?。?/td> | 730K |
| 代理商： | TDA5670-5X |
Semiconductor Group
8
TDA 5670-5X
Unmodulated video and audio carrier, measured with the spectrum analyzer as difference
between video carrier signal level and sideband signal level; loaded
Q
factor
Q
L
of the audio
oscillator resonance circuit adjusted by
R
P
to provide the required video to audio carrier ratio of
12.5 dB;
Q
U
= 25
Video to audio
carrier ratio
α
O
35
48
α
V/A
10
12.5
15
dB
f
VC
+
f
AC
(5.5 MHz)
1
Harmonic wave ratio
Harmonic wave ratio
α
O
42
48
dB
dB
f
VC
+ 2
f
AC
(11 MHz)
f
VC
+ 3
f
AC
(16.5 MHz)
1
1
All remaining harmonic waves; multiple of fundamental wave of video carrier, without video
signal, measured with spectrum analyzer;
f
VC
= 523.25-623.25 MHz; pin 14 open
α
15
Residual carrier
suppression
α
N/V
48
74
dB
1
α
R
32
dB
Ch 30...40
3
Signal-to-noise in
video; unmodulated
audio carrier
dB
Ch 30...40
4
Interference product
ratio audio in video
AM-modulation
FM-modulation of
audio carrier
α
A/V
α
A/V
49
48
62
60
dB
dB
Ch 30...40,
Ch 30...40
m
A
= 90%
Ch 39; test
picture FuBK
Ch 39; test
picture FuBK
4
4
Unweighted AM-
Unweighted FM-
interference level
ratio video in audio
α
V/A
α
V/A
48
48
54
54
dB
dB
5
5
Signal-to-noise ratio
of audio oscillator
α
N/A
α
N/A
48
48
54
54
dB
dB
AM unmodulated
FM-audio carrier
5
5
Video
Video input current
at pin 12
–I
12
0
1
μ
A
C
12
≤
100 nF
1
Video input voltage
at pin 12
V
12
0.7
1.4
Vpp
C
12
≤
100 nF
1
AC/DC-Characteristics
(cont’d)
T
A
= 25
o
C;
V
S
= 12 V
Parameter
Symbol
Limit Values
Unit
Test
Condition
Test
Circuit
min.
typ.
max.
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