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Электронный компонент: S1A0497X01-I0B0

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FM FRONT END
S1A0497X01
1
INTRODUCTION
The S1A0497X01 is a monolithic integrated circuit designed for
the FM front end of portable radio cassettes or music centers.
It consists of RF AMP, local OSC buffer and mixer.
Compared with conventional types, it is improved in the follow-
ing characteristics:
-- Low supply voltage
-- Strong input
-- Spurious radiation
FEATURES
Wide supply voltage range: V
CC
= 1.6V
-
6.0V
Low local oscillation stop voltage: V
STOP
= 0.9V (Typ)
mproved inter-modulation characteristics by double balanced type
mixer circuit
Low spurious radiation
Built-in clamping diode in the mixer output stage
ORDERING INFORMATION
Device
Package
Operating Temperature
S1A0497X01-I0B0
9
-
SIP
-
25
C
-
+75
C
S1A0497X01-S0B0
14
-
SOP
9
-
SIP
14
-
SOP
S1A0497X01
FM FRONT END
2
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS (Ta = 25
C)
NOTE: Derated above Ta = 25
C in the proportion of 4mW/
C
Characteristic
Symbol
Value
Unit
Supply Voltage
V
CC
8
V
Power Dissipation
P
D
S1A0497X(9-SIP)
600
mW
S1A0497X(14-SOP)
300
Operating Temperature
T
OPR
-
25
-
+75
C
Storage Temperature
T
STG
-
55
-
+150
C
1
3
4
5
6
7
8
RF AMP
RF
BYPASS
RF
MIX IN
GND
MIX
OSC
OSC
9
OSC BUFF
MIX
LOCAL
OSC
V
REF
OUTPUT OUTPUT
V
CC
INPUT
OUTPUT
(8)
(11)
(12)
(13)
(14)
(3)
(4)
(5)
(7)
2
NOTE: ( ) means 14-SOP-Package
NC: (1), (2), (6), (9), (10)
FM FRONT END
S1A0497X01
3
ELECTRICAL CHARACTERISTICS
(Ta = 25
C ( V
CC
= 5 V, f = 98MHz, fm = 1kHz,
f = 22.5KHz, unless otherwise specified)
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
Quiescent Circuit Current
I
CCQ
V
L
= 0
-
5.0
8.0
mA
-3dB Limiting Sensitivity
V
I(LIM)
V
D
(V
I
= 60 dB
)-3dB Down
-
3.0
7.0
dB
Conversion Gain
G
V
V
I
= 60 dB
25
31
-
dB
Usable Sensitivity
S
USA
S/N = 30dB
-
11
-
dB
Oscillation Voltage
V
OSC
f
OSC
= 108MHz
90
165
250
mV
Oscillation Stop Voltage
V
STOP
-
-
0.9
1.3
V
S1A0497X01
FM FRONT END
4
TEST CIRCUIT
(I
CCQ
, V
I(LIM)
, S
USA
, G
V
, V
OSC
, V
STOP
)
330
Vcc
6
2
4
7
S1A2245X01
10p
F
C2
C1
0.01
F
0.01
F
L
Tank
coil
1
5
3
100p
F
FM
MPX
L
R
KSC838-0
330
0.01
F
C.F
C.F
10k
15k
100
1k
0.01
F
S1A0497X01
1
2
3
4
5
6
7
9
8
(8)
(11)
(12)
(13)
(14)
(3)
(4)
(7)
(5)
0.01
F
100
F
0.01
F
150p
F
4.7p
F
T3
T2
T1
1000pF
FM
S.G
Zo=75
15pF
15pF
BPF
Vcc
Vosc
( ) : KA22497D
FM FRONT END
S1A0497X01
5
COIL SPECIFICATIONS (BOTTOM VIEW)
T1 (L1) FM RF
T2 (L2) FM OSC
T3 FM IFT
*
f (MHz)
Q
O
Turns
98
100
4
* In a Diameter of 5.5 mm
0.8 mm
UEW
*
* In a Diameter of 5.5 mm
0.8 mm
UEW
f (MHz)
Q
O
Turns
98
100
3
3
2
1
4
5
6
0.12 mm
UEW
CO (pF)
f
(MHz)
Q
O
Turns
1 - 3
1 - 3
1 - 3
4 - 6
75
10.7
115
12
1
KOREA TOKO
S1A0497X01
FM FRONT END
6
T1 (L1) FM RF
T2 (L2) FM RF OSC
T3 FM IFT
F (MHz)
Qo
Turns
D
WIRE
KWANG SUNG PART
NO
98
100
4
5.5
0.8
KSS-SPI
KSS-SP1
F (MHz)
Qo
Turns
D
WIRE
KWANG SUNG PART
NO
98
100
3
5.5
0.8
KSS-SP2
KSS-SP2
4
6
3
2
1
5
KSI-FA1
C
0
(pF)
F
(MHz)
Q
0
Turns
KWANG SUNG PART
NO
1 - 3
1 - 3
1 - 3
4 - 6
75
10.7
115
12
1
KSI-FA1
FM FRONT END
S1A0497X01
7
100
0
-100
-200
0
2
4
6
8
10
0
V
CC
(V), SUPPLY VOLTAGE
LOCAL OSCILLATION FREQUENCY DEVIATION,
LOCAL OSCILLATION VOLTAGE.SUPLY VOLTAGE
f
(
K
H
z
)
,

L
O
C
A
L

O
S
C
I
L
L
A
T
I
O
N

F
R
E
Q
U
E
N
C
Y

D
E
V
I
A
T
I
O
N
f
V
OSC
300
200
100
V
O
S
C
(
m
V
)
,

L
O
C
A
L

O
S
C
I
L
L
A
T
I
O
N

V
O
L
T
A
G
E
300
200
100
0
Ta(
C), AMBIENT TEMPERATURE
LOCAL OSCILLATION VOLTAGE
AMBIENT TEMPERATURE
0
20
40
60
80
-20
V
O
S
C
(
m
V
)
,

L
O
C
A
L

O
S
C
I
L
L
A
T
I
O
N

V
O
L
T
A
G
E
V
CC
= 5V
f
OSC
= 108MHz
10
8
2
0
0
2
4
6
8
10
V
CC
(V), SUPPLY VOLTAGE
QUIESCENT CIRCUIT CURRENT-SUPPLY VOLTAGE
I
C
C
Q
(
m
V
)
,

Q
U
I
E
S
C
E
N
T

C
I
R
C
U
I
T

C
U
R
R
E
N
T
4
6
V
I
= 0
40
30
0
0
2
4
6
8
10
V
CC
(V), SUPPLY VOLTAGE
SENSITIVITY-SUPPLY VOLTAGE
10
20
f = 98MHz
fm = 1KHz
f = 22.5KHz dev.
S
USA
V
I(LIM)
V
I
(
L
I
M
)

(
d
B
)
,

-
3
d
B

L
I
M
I
T
I
N
G

S
E
N
S
I
T
I
V
I
T
Y
S
U
S
A

(
d
B
)
,

U
S
A
B
L
E

S
E
N
S
I
T
I
V
I
T
Y
40
30
0
-20
0
20
40
60
80
Ta(
C), AMBIENT TEMPERATURE
SENSITIVITY-AMBIENT TEMPERATURE
10
20
V
CC
= 5V
f = 98 MHz
f = 22.5KHz dev.
V
I
(
L
I
M
)

(
d
B
)
,

-
3
d
B

L
I
M
I
T
I
N
G

S
E
N
S
I
T
I
V
I
T
Y
S
U
S
A

(
d
B
)
,

U
S
A
B
L
E

S
E
N
S
I
T
I
V
I
T
Y
S
USA
V
I(LIM)
200
100
-200
-20
0
20
40
60
80
Ta(
C), AMBIENT TEMPERATURE
AMBIENT TEMPERATURE TEMPERATURE
100
0
V
CC
= 5V
f = 98 MHz
fm = 1KHz dev.
f
(
1
K
H
z
)
,

L
O
C
A
L

O
S
C
I
L
L
A
T
I
O
N

F
R
E
Q
U
E
N
C
Y

D
E
V
I
A
T
I
O
N
LOCAL OSCILLATION FREQUENCY DEVIATION
fm = 1KHz
S1A0497X01
FM FRONT END
8
APPLICATION INFORMATION
RF AMP
The RF AMP is a common base type, so the operating frequency range is improved. The GND of the bypass
capacitor (Pin 2) should be located closely at Pin 5 (GND). When using the bypass capacitor at V
CC
-line of Pin 3.
We can expect an improvement of the S/N ratio.
MIXER
The mixer stage uses a double balanced type in order to protect the leakage of OSC, spurious radiation.
Also, this is built into the limiter in order to improve the strong input characteristic.
B. P. F
FM ANT
75
75
1
2
3
BIAS
V
CC
1000p
15p
T1
V
CC
IF AMP
V
CC
OSC OUT
BIAS
MIX OUT
MIX
IN
6
4
FM FRONT END
S1A0497X01
9
LOCAL OSCILLATION
The local oscillator uses a colpitts oscillator for stable oscillation at high frequency. This is built into the OSC buffer
in order to stably operate the OSC frequency and OSC voltage at strong input.
V
CC
OSC BUFF
MIX
8
15p
15p
S1A0497X01
FM FRONT END
10
APPLICATION CIRCUIT
BPF
S 1 A 2 2 9 8 A 0 1
IF + MPX
1
24
2
23
3
22
4
21
5
20
6
19
7
18
8
17
16
10
15
11
14
12
13
9
S 1 A 0 4 9 7 X 0 1
FM FRONT END
C12
0.047
F
C2
470
C17
R9
33k
L2
C3
470pF
R1
33k
C6
15pF
L1
Q4
100pF
T3
R12
1k
R13
120
R6
2.7k
R7
390
Q3
0.022
F
C36
F2
10.7MHz
Q5
R17
100k
AM ANT
0.022
F
C41
R14 100k
C38
470pF
0.01
F
0.022
F
/50V
C33
4.7
F
C31
C32
0.01
F
C34
R15 560
0.018
F
C23
0.018
F
C22
/50V
4.7
F
C24
/50V
4.7
F
C26
Q6
Q7
R3
10k
10k
R4
/50V
SW1
X2
F1
0.022
F
C13
C14
1
F
C4
0.068
F
C15
0.047
F
C5
4.7k
R5
C16
0.082
F
X1
4.7
F
C27
/50V
4.7
F
C35
Q1
Q1
100k
R5
Q10
C30
C14
100pF
R8
4.7k
L3
100
H
100pF
0.047
F
C20
C21
G
L
R
MUTE
BUZZER
FM OSC
AM OSC
VDD
GND
SD/IF
RADIO ON
ST
3V
GND
8V
4.7k
R21
DC - AC CONVERTER TOKO.INC
5CDM - 658N - 1085 TK11822M
4
12
6
12
5
3
2
1
100
H
L5
U2
39pF
C44
6pF
C50
8pF
C51
4
6
1
3
CO1
4.7k
R20
L1 :
FM RF ( KSS-SP1 : KWANG SUNG )
L2 :
FM OSC ( KSS-SP2 : KWANG SUNG )
T1 : AM IFT ( 7MC - K5050N : KR TOKO )
AM IFT ( KSI - AA1 : KWANG SUNG )
T2 : AM OSC ( A7BR - KS141010X2 : TOKO )
AM OSC ( KSI - AO5 : KWANG SUNG )
T3 : FM IFT ( A119AC - 680122X3 : KR TOKO )
FM IFT ( KSI-FA1 : KWANG SUNG )
F1 : AHCFM2 - 450BL ( TOKO )
F2 : CFE 10.7MA ( MURATA )
X2 : CDA 10.7MG65-A ( MURATA )
X1 : CFB456F - 18 ( MURATA )
H2 : KV1236Z ( TOKO )
Q3, Q4 : KV1310NT (TOKO )
1
2
3
4
5
6
7
8
9
/10V
100
F
C46
/10V
100
F
C49
C47
0.047
F
C45
0.047
F
B U 2 6 1 4 - P L L
1
2
3
4
5
6
7
8
16
11
15
10
14
9
13
12
U-COM CONTROL
100pF
270k
5.6k
A733
22k
2.2k
10k
223pF
/50V
2.2
F
10k
22pF
22pF
C11
0.047
F
5pF
C18
8pF
C29
0.047
F
R10
10
C1
8pF
C1674
0.047
F
C7
/50V
100
F
C8
C1674
0.047
F
C43
8pF
C40
20pF
C42
T2
C39
20pF
R16 560
456K
330pF
450K
T1
C945
C945
R2002
R2002
C48
0.047
F
100pF
100pF
0.6
4t
3