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參數(shù)資料
| 型號： | STV8224B |
| 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)： | 3/12頁 |
| 文件大?。?/td> | 133K |
| 代理商： | STV8224B |
ELECTRICALCHARACTERISTICS
(T
amb
= 25
°
C,V
CC
= 9V,IFinput= 10mV
RMS
synclevelat B/G,Peak-whitelevelat L,
VideomodulationDSB,D = 90%at B/G,D = 95%at L, 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
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
SUPPLY
V
CC
I
CC
Supply Voltage
Supply Current
8
9
70
12.6
95
V
I
17
, V
CC
= 9V
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
-3dBVideo at Output
70
2
2
68
180
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 Figure21
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
-3dBVideo Signal
1.6
1.9
4.4
1.8
9
6
3
1
1
5
61
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 Insertion Level
Black Noise Threshold Voltage
Black Noise Insertion Level
7
8
6
10
10
3
56
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
outblack white
2. Video carrier relativelevel = 0dB,Chroma subcarrier level = -3.2dB, Sound carrier relative level = -20dB. AGC voltage (Pin 22)
is adjustedto get 1V
PP
signalon output (Pin 3).
V
N
(
mV
RMS
)
atBW = 5MHz
8
STV8224B
3/12
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