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參數(shù)資料
| 型號： | STV8225 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | AM SIF CIRCUIT |
| 中文描述： | 上午應(yīng)力強度因子電路 |
| 文件頁數(shù)： | 3/6頁 |
| 文件大?。?/td> | 90K |
| 代理商： | STV8225 |
ELECTRICALCHARACTERISTICS
(continued)(V
CC
= 9V, V
IN
= 10mV
RMS
, f
SC
= 32.4MHz, f
M
= 1kHz,
m = 54% modulationdepth, Audio BW = 40Hzto 15kHz, T
amb
= 25
o
C, unless otherwise specified)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
AM DEMODULATOR
AF Output Voltage (Pins 7-9)
Level switch (Pin 4) open
Level switch (Pin 4) connected to GND
-3dB versus nominal signal
200
400
250
500
300
600
mV
RMS
mV
RMS
AF Bandwidth (Pins 7-9)
Lower Limit
Upper Limit
Harmonic Distorsion (Pins 7-9)
S/N (Pins 7-9)
50
40
Hz
kHz
%
dB
THD + Noise
Weighted according toCCIR 468-4
0.7
55
1.8
MUTE
Threshold Level (Pin 6)
Attenuation (Pins 7-9)
Mute mode if voltage below threshold
Level switch (Pin 4) connected to GND
TV - AM mode
0.2
80
0.3
96
0.4
V
dB
AUDIO SWITCHES
Switching Voltage (Pin 10)
Operation mode
View1
Level 1 (Pin10)
For voltage below this level
TV-FM mode :
Pin 7 connected to A
Pin 9 connected to C
1.8
2.3
2.6
V
View2
Level 2 (Pin10)
For voltage below this level
TV-AM mode :
Pin 7 connected to A
Pin 9 connected to A
4.1
4.6
4.9
V
View3
Level 3 (Pin10)
For voltage below this level
AV-AM mode :
Pin 7 connected to B
Pin 9 connected to A
For voltage above this level
AV-FM mode :
Pin 7 connected to B
Pin 9 connected to C
6.4
6.8
7.2
V
Input Current (Pin 10)
Input Dynamic Range (Pins 5-11)
Input Resistance (Pins5-11)
Switch Gain
Source current
0.3
2
μ
A
V
RMS
k
dB
2
35
-0.6
50
-0.1
V
= 2V
, f = 1kHz
Pin 7 vs Pin 11 and Pin 9 vs Pin 5
f = 1kHz
0.4
Crosstalk
Output Resistance (Pins7-9)
Output Current Source (Pins 7-9)
Switch Distorsion
70
70
85
100
1
0.1
dB
mA
%
130
V
= 2V
, f= 1kHz, THD + Noise,
Pin 7 vs Pin 11 and Pin 9 vs Pin 5
Unweighted
0.5
Output Noise
DC Plop at AF Output Pin
7
20
50
μ
Vp
mV
10
8
TV
FM
Viev1
TV
AM
Viev2
AV
AM
Viev3
AV
FM
0V
V
CC
V
10
8
STV8225
3/6
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