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Электронный компонент: S1A2245X01-I0U0

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FM IF FOR CAR RADIO
S1A2245X01
1
INTRODUCTION
The S1A2245X01 is a monolithic integrated circuit consisting of
an FM IF amplifier and detector. It is suitable for car radios.
FUNCTIONS
3-stage IF amplifier
Peak detector
FEATURES
Suitable for FM car radios
Wide operating supply voltage range: V
CC
= 8V
-
14V
High detector output voltage (V
O
= 500mV, Typ)
Excellent AM rejection: AMR = 50dB (Typ)
High sensitivity: V
I
(LIM)
= 50dB
V (Typ)
Simplified single coil tuning
Low distortion (THD = 0.1 %: Typ)
Minimum number of external parts required
ORDERING INFORMATION
Device
Package
Operating Temperature
S1A2245X01-I0U0
7
-
SIP
-
20
C
-
+70
C
7
-
SIP
S1A2245X01
FM IF FOR CAR RADIO
2
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS (Ta =25



C)
NOTE:
Derated above Ta = 25
C in the proportion of 4 mW/
C
Characteristic
Symbol
Value
Unit
Supply Voltage
V
CC
15
V
Input Voltage
V
I
0.7
V
Power Dissipation
P
D
400
mW
Operating Temperature
T
OPR
-
20
-
+70
C
Storage Temperature
T
STG
-
40
-
+125
C
4
5
6
7
2
1
3
IF
AMP
FM DET
Regulated
Power
Supply
INPUT
BYPASS
GND
DET
DET
AF
OUTPUT
V
CC
FM IF FOR CAR RADIO
S1A2245X01
3
ELECTRICAL CHARACTERISTICS
(Ta = 25
C, V
CC
= 12V, f = 10.7MHz, fm = 400Hz)
TEST CIRCUIT
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
Quiescent Circuit Current
I
CCQ
V
I
= 0
8
12
15
mA
- 3dB Limiting Sensitivity
V
l(LlM)
-3dB point from V
O
, V
I
= 80dB
,
f = 75kHz
-
50
55
dB
AM Rejection Ratio
AMR
FM:
f =
75kHz dev AM: 30 % Mod
V
l
= 80dB
-
50
-
dB
Detector Output Voltage
V
O
f =
75kHz dev V
I
= 80dB
V
300
500
700
mV
Total Harmonic Distortion
THD
f =
225kHz dev V
I
= 80dB
V
-
0.2
-
%
Signal to Noise Ratio
S/N
f =
75kHz dev V
I
= 80dB
V
-
60
-
dB
1
2
4
7
S1A2245X01
INPUT
0.01
50
0.01
0.01
C3
AF OUT
10p
C2
C1
L
Tank Coil
V
CC
0.01
S1A2245X01
FM IF FOR CAR RADIO
4
APPLICATION CIRCUIT
COIL SPECIFICATIONS
2
4
7
S1A2245X01
330
0.01
0.01
10p
C2
C1
L
(Tank Coil)
1
FRONT
END
3
5
6
FM
MPX
CF
10K
KSC838-0
0.
01
1K
L
R
+V
CC
0.01
100
330
0.
01
15K
f
o
1
2
L C
1
C
2
2
--------
+
--------------------------------------------
=
CF
4
5
6
1
2
3
Co(pF)
f(MHz)
Qo(%)
Turns
4-6
-
-
27
10.7
150
18
-
-