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STV8223A Datasheet(PDF) 4 Page - STMicroelectronics

Part # STV8223A
Description  MULTISTANDARD VIDEO AND SOUND IF SYSTEM WITH AUDIO AND VIDEO SWITCHES
PDF  10 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STV8223A Datasheet(HTML) 4 Page - STMicroelectronics

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ELECTRICAL CHARACTERISTICS (continued)
(Tamb =25
°C, VCC = 9V, IF input = 10mVRMS sync level at B/G, Video modulation DSB,
D= 90% at B/G, fPC = 38.9MHz, fSC = 33.4MHz, Video BW = 5MHz,
Sound carrier input : 5.5MHz, 10mVRMS,fM = 1kHz, Audio BW = 20kHz,
∆f= ±50kHz,
Volume attenuation = 0dB, unless otherwise specified)
Symbol
Parameter
Test Conditions
Min.
Typ.
Ma.
Unit
FM SOUND DEMODULATION
V8S
Input Sensitivity
-3dB FM detected signal
35
µV
R8
Limiter Input Resistance
1.2
k
Ω
AMR
Amplitude Modulation Rejection
Note 4
50
61
dB
SVR
Supply Voltage Rejection Ratio
Ripple signal : 100Hz, 0.5VPP
12
17
dB
V15
Detected Audio Output Signal
0.85
1.1
1.4
VRMS
THD
Total Harmonic Distortion
0.2
1
%
R15
Internal Deemphasis Resistor
600
750
900
Ω
S/N
Signal to Noise Ratio
Note 5, Weighted CCIR 468-4
50
55
dB
VOLUME CONTROL
VC Range
Control Range
See Figure 21
72
77
dB
AUDIO SWITCH
R16
Input Resistance
45
60
75
k
Ω
CRtk
Crosstalk
70
80
dB
EXTHD
THD on External Signal
VIN =2VRMS, Attenuation = 0dB
0.1
0.3
%
VIDEO SWITCH
VDC 12
DC Input Level
No signal
1.6
1.9
2.2
V
VS12
Top Sync. Clamp Level
1.8
V
V11
DC Output Level
No signal
1.7
2
2.3
V
VS11
Top Sync. Clamp Level
1.5
V
Crosstalk
55
dB
GEX
Gain from External Input to Output
5.5
6
6.5
dB
Output Swing
4
5
V
I12
Input Current
V12 =VDC12 = 1.5V
1
5
µA
VBW
Bandwidth
VIN =1VPP
15
MHz
GIN
Gain from Internal Input to Output
-0.5
0
+0.5
dB
MUTE (Pin 9 or Pin 13)
VTH9
Threshold Voltage Pin 9
1.7
2
2.3
V
V9
DC Level when Mute Disabled
High impedance controling circuit
2.8
V
VTH13
Threshold Voltage Pin 13
0.2
0.3
0.4
V
CONTROL INPUT
Negative Modulation
Video : External - Audio : External
Video : Internal - Audio : Internal
7.2
1.8
V
V
Positive Modulation
Video : External - Audio : External
Video : Internal - Audio : External
4.9
2.6
6.4
4.1
V
V
Threshold 3
Level linked to VCC
6.4
6.8
7.2
V
Threshold 2
Level linked to VCC
4.1
4.5
4.9
V
Threshold 1
Level linked to VCC
1.8
2.2
2.6
V
Notes : 4. AMR = 20 log
V15
(mVRMS)
VAM
(dB) where VAM = output amplitude in AM for fM = 1kHz and m = 30%
5.
S
N
= 20 log
V15
(mVRMS)
VN
(mVRMS)
(dB)
STV8223A
4/10



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