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參數(shù)資料
| 型號： | 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： | 多標準視頻和中頻音頻和視頻系統(tǒng)聲音開關(guān) |
| 文件頁數(shù)： | 4/12頁 |
| 文件大?。?/td> | 145K |
| 代理商： | STV8224A |
ELECTRICAL CHARACTERISTICS
(continued)
(T
amb
= 25
°
C, V
CC
= 9V, IF input = 10mV
RMS
synclevelat B/G, Peak-whitelevel at L,
Video modulationDSB, D = 90% atB/G, D = 95% at L, f
PC
= 38.9MHz, f
SC
= 33.4MHz,
Video BW= 5MHz, Sound carrier input : 5.5MHz, 10mV
RMS
, f
M
=1kHz, AudioBW= 20kHz,
f =
±
50kHz,
Volumeattenuation= 0dB, unlessotherwise specified)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
AGC CIRCUIT (LMODE)
I
22CL
I
22DL
I
22CL
+
Charging Current
Discharge Current
Additional Charging Current
Note 3
2
3.3
0.3
5
4.5
mA
μ
A
μ
A
L in case of missing, VITS Pulses
and no White in Video Content
Refered to Pin3
Threshold Voltage Level for
Additional Charging Current
Additional Discharging Current
Threshold Voltage Level for
Additional Discharging Current
2.75
V
I
22DL
+
28
40
2.25
56
μ
A
V
Refered to Pin3
TUNER AGC
I
23
S23
I
23+
Maximum Sinked Current
Current Slope
Maximum Tuner Plus Sinked Current
1.5
100
2
2.5
230
mA
μ
A/dB
mA
R
24
= 5k
Note 6
170
40
FM SOUND DEMODULATION
V
8S
R
8
AMR
SVR
V
15
THD
R
15
S/N
Input Sensitivity
Limiter Input Resistance
Amplitude Modulation Rejection
Supply Voltage Rejection Ratio
Detected Audio Output Signal
Total Harmonic Distortion
Internal Deemphasis Resistor
Signal to Noise Ratio
-3dB FM detected signal
35
1.2
61
17
1.1
0.2
750
55
μ
V
k
dB
dB
V
RMS
%
dB
Note 4
Ripple signal : 100Hz, 0.5V
PP
50
12
0.85
1.4
1
900
600
50
Note 5, Weighted CCIR 468-4
VOLUME CONTROL
V
C
Range
Control Range
See Figure 22
72
77
dB
AUDIO SWITCH
R
16
CRtk
EXTHD
Input Resistance
Crosstalk
THD on External Signal
45
70
60
80
0.1
75
k
dB
%
V
IN
= 2V
RMS
, Attenuation = 0dB
0.3
Notes :
3. Triggered on white level
4. AMR =20 logV
15
(
mV
RMS
)
V
AM
(dB) where V
AM
= output amplitude in AM for f
M
= 1kHz and m =30%
5.
S
N
=
20 logV
15
(
mV
RMS
)
6. Additional sinked current for large increasing steps of input signal when :
- Voltage Pin22 > starting point defined Pin 24.
- Output signal (Pin 3) saturated (V
3
< V BTH in BG mode, V
3
> V WTH in L mode).
V
N
(
mV
RMS
)
(dB)
8
STV8224A
4/12
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