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STV8224B 数据表(PDF) 9 Page - STMicroelectronics

部件名 STV8224B
功能描述  MULTISTANDARD VIDEO AND SOUND IF SYSTEM WITH AUDIO AND VIDEO SWITCHES
PDF  12 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STV8224B 数据表(HTML) 9 Page - STMicroelectronics

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background image
8
7
6
5
4
3
2
1
0
38.55
38.95
39.35
38.75
39.15
IF FREQUENCY (MHz)
Current Conversion
with 100k
Ω/100kΩ Bridge
Figure 21 : AFC Voltage Pin 2 vs IF Frequency
0
-10
-20
-30
-50
-40
-60
-70
-80
1.0
2.0
3.0
4.0
5.0
V
(V)
13
Figure 22 : Volume Control Attenuation vs V13
2
1.75
1.5
1.25
1
0.75
0.5
0.25
0
110
102
V
(mV
)
IN
RMS
10-1
103
R24 = 1k
Ω
R24 = 3k
Ω
R24 = 5k
Ω
Figure 23 : Tuner AGC Output Current vs VIN
(R24 is external adjustment Pin 24)
1.3
1.9
2.5
3.6
4.2
4.85
V
3 (V)
t
White Spike Noise Clamp
Top White
White Noise Level Insertion
Black Noise Level Insertion
Top Synchronization
Black Spike Noise Clamp
Figure 25 : Black and White Noise Inverter
100
10
1
0.1
0.01
0
10
20
30
40
50
60
70
80
V
IN (mVRMS)
Figure 24 : Video Signal to Noise Ratio (Pin 3)
as a function of IF Input Signal
(Pins 19-20) Weighted CCIR-567
STV8224B
9/12



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