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參數(shù)資料
| 型號(hào)： | STV8224A |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | MULTISTANDARD VIDEO AND SOUND IF SYSTEM WITH AUDIO AND VIDEO SWITCHES |
| 中文描述： | 多標(biāo)準(zhǔn)視頻和中頻音頻和視頻系統(tǒng)聲音開關(guān) |
| 文件頁數(shù)： | 3/12頁 |
| 文件大?。?/td> | 145K |
| 代理商： | STV8224A |
ELECTRICALCHARACTERISTICS
(T
amb
= 25
°
C, V
CC
= 9V,IF input = 10mV
RMS
synclevel at B/G,Peak-whitelevel at L,
VideomodulationDSB, D = 90% at B/G, D = 95%at L, f
PC
= 38.9MHz,f
SC
= 33.4MHz,
VideoBW= 5MHz, Sound carrier input : 5.5MHz,10mV
RMS
, f
M
= 1kHz, AudioBW = 20kHz,
f =
±
50kHz,
Volumeattenuation= 0dB, unless otherwisespecified)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
SUPPLY
V
CC
I
CC
Supply Voltage
Supply Current
8
9
12.6
95
V
I
17
, V
CC
= 9V
70
mA
IF AMPLIFIER
V
19-20
R
19-20
C
19-20
Gr
Input Sensitivity (RMS)
Differential Input Resistance
Differential Input Capacitance
Gain Control Range
Max Input Signal
-3dB Video at Output
70
1.5
2
64
110
μ
V
RMS
k
pF
dB
mV
RMS
+1dB Video at Output
SYNCHRONOUS VIDEO DEMODULATOR
DF
PC
Vision Carrier Capture
-1.4
1.6
MHz
AFC
S2
AFC Slope
See Figure 21
0.2
μ
A/kHz
DEMODULATED VIDEO OUTPUT (Pin 3)
V
A3
Amplitude
Amplitude Difference
Top Sync Level
Zero Carrier Level
Top Sync to White
2
2.3
2.6
10
2.2
V
PP
%
V
V
V
MHz
%
Degree
mV
mV
mA
dB
dB
V
V
V
V
BG vs L
V
S3
B/G and L
B/G
L
-3dB Video Signal
1.6
1.9
4.4
1.8
7
6
6
1
1
5
58
52
4.85
3.6
1.3
2.5
BW
Dg
Dp
Vr3c
Vr3h
I
3
S/N
Bandwidth
Differential Gain
Differential Phase
Residual Carrier Signal (RMS Value)
Residual 2nd Harmonic (RMS Value)
Internal Bias of Emitter Follower
Signal to Noise Ratio
Intermodulation 1.07MHz
White Noise Threshold Voltage
White Noise InsertionLevel
Black Noise Threshold Voltage
Black Noise Insertion Level
6
8
8
10
10
3
53
Note 1 - Weighted CCIR-567
Note 2
V
WTH
V
WIL
V
BTH
V
BIL
AGC CIRCUIT (BG MODE)
I
22CBG
I
22DBG
C/D
Charging Current
Discharge Current
Charging/Discharging Ratio
550
12
950
20
45
1300
28
μ
A
μ
A
Notes :
1.
S
N
=
20 log 10V
out blackwhite
2. Video carrier relative level = 0dB,Chroma subcarrier level = -3.2dB, Sound carrier relative level = -20dB. AGC voltage (Pin 22)
is adjusted to get 1V
PP
signal on output (Pin 3).
V
N
(
mV
RMS
)
at BW =5MHz
8
STV8224A
3/12
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