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參數(shù)資料
| 型號(hào)： | STV8211 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Video & Sound IF System(視頻和聲音IF系統(tǒng)) |
| 中文描述： | 視頻 |
| 文件頁數(shù)： | 3/8頁 |
| 文件大小： | 112K |
| 代理商： | STV8211 |
ELECTRICAL CHARACTERISTICS
(T
amb
= 25
o
C, V
CC
= 9V, IF input = 10mV
RMS
top sync, D = 90%, VideoBW = 5MHz,
Sound carrierinput : 5.5MHz, 10mV
RMS
, f
m
= 1kHz, Audio BW = 20kHz,
f =
±
25kHz,
Volume attenuation= 0dB, unless otherwisespecified)
Symbol
IF AMPLIFIER
Parameter
Test conditions
Min.
Typ.
Max.
Unit
AGC Range
IF - Sensitivity (RMS)
R Input Differential
C Input Stray
58
64
70
1.5
67
dB
μ
V
k
pF
Video out -3dB
Guaranteed by process
1
2
2
DEMODULATED VIDEO OUTPUT
S/N Video (BW = 5MHz)
IF inp. = 10mV
RMS
, 20 log
10
(
WH
BL
)
N
RMS
49
55
dB
Intermodulation 1.07MHz
AGC open loop,Picture carrier = 0dB,
Chrominance carrier = -3.2dB,
Sound carrier = -20dB
50
dB
Detected Video Output
Peak-to-peak (positive)
TopSynchro Output Level
Video Bandwidth with Output Filter
Differential Phase
Differential Gain
White Noise Clamp
White Noise Insertion
Video Output Current Capability
Residual Output Carrier (RMS)
1.8
2
2.4
V
1.9
7
3
3
4.5
3.2
2
V
-3dB, see Figures 1 and 2
MHz
Degree
%
V
V
mA
mV
mV
7
7
Referred to the video output
see Figure 6
1.2
2.6
10
20
At 38.9MHz
At 77.8MHz
AFC
AFC Slope
With R
Load
= 200k
, see Figure 3
25
40
60
mV/kHz
AGC CIRCUIT
Maximum I Charge
Maximum I Discharge
I
CH /
I
DISCH
Ratio
550
14
900
20
45
1200
26
μ
A
μ
A
-
TUNER AGC
Sinked Current
Slope
Suitable for Mosfet-NCH
RTD = 0
÷
10k
1.15
2
2.6
600
mA
μ
A/dB
DEMODULATED AUDIO OUTPUT
Detected Output Audio Signal (RMS)
TotalHarmonic Distorsion
Amplitude Modulation Rejection
2nd IF Sound Sensitivity -3dB FM
Detected Audio Signal (RMS)
S
+
N
N
120
270
0.5
53
200
350
2
mV
%
dB
μ
V
m = 30%
40
f =
±
25kHz for signal
f= 0 after deemphasis (BW = 20kHz)l
50
60
dB
Thermal Drift of Volume
0.05
dB
o
C
dB
dB
dB
Input Resistance Limiter
Volume Control versus V
9
400
560
0
18
74
720
See Figure 4
V
9
= 4.5V
V
9
= 2.5V
V
9
= 0.9V
12
65
24
8
STV8211
3/8
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