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STV8225 数据表(PDF) 3 Page - STMicroelectronics

部件名 STV8225
功能描述  AM SIF CIRCUIT
PDF  6 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STV8225 数据表(HTML) 3 Page - STMicroelectronics

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ELECTRICAL CHARACTERISTICS (continued) (VCC =9V, VIN = 10mVRMS,fSC = 32.4MHz, fM = 1kHz,
m = 54% modulation depth, Audio BW = 40Hz to 15kHz, Tamb =25
oC, 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
200
400
250
500
300
600
mVRMS
mVRMS
AF Bandwidth (Pins 7-9)
Lower Limit
Upper Limit
-3dB versus nominal signal
50
40
Hz
kHz
Harmonic Distorsion (Pins 7-9)
THD + Noise
0.7
1.8
%
S/N (Pins 7-9)
Weighted according to CCIR 468-4
55
dB
MUTE
Threshold Level (Pin 6)
Mute mode if voltage below threshold
0.2
0.3
0.4
V
Attenuation (Pins 7-9)
Level switch (Pin 4) connected to GND
TV - AM mode
80
96
dB
AUDIO SWITCHES
Switching Voltage (Pin 10)
Operation mode
View1
Level 1 (Pin 10)
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 (Pin 10)
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 (Pin 10)
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)
Source current
0.3
2
µA
Input Dynamic Range (Pins 5-11)
2
VRMS
Input Resistance (Pins 5-11)
35
50
k
Ω
Switch Gain
VIN =2VRMS, f = 1kHz
Pin 7 vs Pin 11 and Pin 9 vs Pin 5
-0.6
-0.1
0.4
dB
Crosstalk
f = 1kHz
70
85
dB
Output Resistance (Pins 7-9)
70
100
130
Ω
Output Current Source (Pins 7-9)
1
mA
Switch Distorsion
VIN =2VRMS, f = 1kHz, THD + Noise,
Pin 7 vs Pin 11 and Pin 9 vs Pin 5
0.1
0.5
%
Output Noise
Unweighted
7
20
µVp
DC Plop at AF Output Pin
10
50
mV
TV
FM
Viev1
TV
AM
Viev2
AV
AM
Viev3
AV
FM
0V
VCC
V10
STV8225
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