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參數(shù)資料
| 型號： | STV8223B |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Multistandard Video and Sound IF System with Audio and Video Switches(低音頻和視頻開關(guān)的多標(biāo)準(zhǔn)視頻和聲音IF系統(tǒng)) |
| 中文描述： | 多標(biāo)準(zhǔn)視頻和聲音中頻與音頻視頻開關(guān)系統(tǒng)（低音頻和視頻開關(guān)的多標(biāo)準(zhǔn)視頻和聲音中頻系統(tǒng)） |
| 文件頁數(shù)： | 4/10頁 |
| 文件大小： | 112K |
| 代理商： | STV8223B |
ELECTRICAL CHARACTERISTICS
(continued)
(T
amb
= 25
°
C,V
CC
= 9V,IF input= 10mV
RMS
synclevel at B/G,
VideomodulationDSB, D = 90% at B/G,f
PC
=38.9MHz,f
SC
= 33.4MHz,
VideoBW = 5MHz, Soundcarrier input: 5.5MHz,10mV
RMS
, f
M
= 1kHz,AudioBW= 20kHz,
f =
±
50kHz,
Volumeattenuation= 0dB,unlessotherwisespecified)
Symbol
FM SOUND DEMODULATION
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
8S
R
8
Input Sensitivity
Limiter Input Resistance
DC Voltage (Pin8)
Amplitude Modulation Rejection
Supply Voltage Rejection Ratio
Detected Audio Output Signal
Total Harmonic Distortion
Internal Deemphasis Resistor
Signal to Noise Ratio
150
600
4.2
61
33
1.1
0.2
750
60
μ
V
RMS
V
dB
dB
V
RMS
%
dB
AMR
SVR
V
15
THD
R
15
S/N
Note 4
Ripple signal : 100Hz, 0.5V
PP
50
28
0.85
1.4
1
900
600
55
See Note 5,
WeightedCCIR 468-4,
(quasi peak level) inputPin 8
Measurement between IF input
(Pins19-20) and audiooutput(Pin15)
SAW : K2955
BPF : SFE5.5MB
Black Picture (sync only)
White Picture
250kHz Square Wave
47
46
47
52
50
52
dB
dB
dB
VOLUME CONTROL
V
C
Range
AUDIO SWITCH
Control Range
See Figure 22
72
77
dB
R
16
CRtk
En
Input Resistance
Crosstalk
Output Noise Level (Pin 14)
55
70
70
80
70
85
k
dB
μ
V
WeightedCCIR 468-4, V
13
= 0.5V
(quasi peak level)
V
IN
= 2V
RMS
, Attenuation = 0dB
EXTHD
THD on External Signal(Pin 14)
Audio Reference Voltage (Pin 9)
VIDEO SWITCH
V
DC 12
DC Input Level
V
S12
Top Sync. Clamp Level
V
11
DC Output Level
V
S11
Top Sync. Clamp Level
Crosstalk
GEX
Gain from Ext.Input to Output
Output Swing
I
12
Input Current
VBW
Bandwidth
G
IN
Gain from Int.Input to Output
MUTE (Pin13)
0.1
4.5
0.3
%
V
No signal
1.6
1.9
1.8
2
1.5
55
6
5
1
15
0
2.2
V
V
V
V
dB
dB
V
μ
A
MHz
dB
No signal
1.7
2.3
5.5
4
6.5
V
12
= V
DC12
= 1.5V
V
IN
= 1V
PP
5
-0.5
+0.5
V
TH13
Threshold Voltage Pin 13
0.2
0.3
0.4
V
CONTROL INPUT
Negative Modulation
Negative Modulation
Video : External- Audio: External
Video : Internal - Audio : Internal
7.2
V
V
1.8
Notes :
4. AMR = 20 logV
15
(
mV
RMS
)
V
AM
(dB) where V
AM
= outputamplitude in AM for f
M
= 1kHz and m = 30%
5.
S
N
=
20 logV
15
(
mV
RMS
)
V
N
(
mV
RMS
)
(dB)
8
STV8223B
4/10
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