Datasheet S1A0497X01-I0B0, S1A0497X01-S0B0 Datasheet (Samsung)

FM FRONT END S1A0497X01

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 follow­ing characteristics:

— Low supply voltage
— Strong input
— Spurious radiation

FEATURES

• Wide supply voltage range: VCC = 1.6V − 6.0V

• Low local oscillation stop voltage: V

• mproved inter-modulation characteristics by double balanced type
mixer circuit

• Low spurious radiation

• Built-in clamping diode in the mixer output stage

STOP

= 0.9V (Typ)

ORDERING INFORMATION

9−SIP

14−SOP

Device Package Operating Temperature

S1A0497X01-I0B0 9−SIP

S1A0497X01-S0B0 14−SOP

−25°C − +75°C

1

S1A0497X01 FM FRONT END

BLOCK DIAGRAM

RF AMP

(8) (11) (12) (13) (14) (3) (4) (5) (7)

1 3 4 5 6 7 8

RF BYPASS RF MIX IN GND MIX OSC OSC

INPUT OUTPUT

2

MIX

NOTE: ( ) means 14-SOP-Package
NC: (1), (2), (6), (9), (10)

ABSOLUTE MAXIMUM RATINGS (Ta = 25°C)

Characteristic Symbol Value Unit

Supply Voltage V

Power Dissipation P

D

CC

S1A0497X(9-SIP) 600

S1A0497X(14-SOP) 300

OSC BUFF

OUTPUT OUTPUT

LOCAL
OSC

V

REF

9

V

CC

8 V

mW

Operating Temperature T
Storage Temperature

NOTE: Derated above Ta = 25 °C in the proportion of 4mW/°C

2

OPR

TSTG

− 25 − +75 °C

− 55 − +150 °C

FM FRONT END S1A0497X01

ELECTRICAL CHARACTERISTICS

(Ta = 25 °C ( VCC = 5 V, f = 98MHz, fm = 1kHz, ∆f = ± 22.5KHz, unless otherwise specified)

Characteristic Symbol Test Conditions Min. Typ. Max. Unit

Quiescent Circuit Current I

-3dB Limiting Sensitivity V

CCQ
I(LIM)

Conversion Gain G
Usable Sensitivity S
Oscillation Voltage V
Oscillation Stop Voltage V

STOP

V
USA
OSC

VL = 0 − 5.0 8.0 mA
VD (VI = 60 dBµ)-3dB Down − 3.0 7.0 dBµ
VI = 60 dBµ 25 31 − dB
S/N = 30dB − 11 − dBµ
f

= 108MHz 90 165 250 mV

OSC

− − 0.9 1.3 V

3

S1A0497X01 FM FRONT END

Vcc

( ) : KA22497D

TEST CIRCUIT

(I

CCQ

, V

I(LIM)

, S

USA

, GV, V

OSC

, V

STOP

)

L

FM

R

MPX

100pF

Vcc

Tank

100Ω

coil

10pFC2

7

6

L

C1

5

3

0.01µF

330Ω

0.01µF

15k

Ω

1

C.F

KSC838-0

T3

4

S1A2245X01

2

330Ω

F

µ

0.01

0.01µF

0.01µF

C.F

Vosc

T2T1

10k

1kΩ

Ω

F

µ

0.01

100µF

15pF

150pF

4.7pF

S1A0497X01

1000pF

1 2 3 4 5 6 7 98

(8) (11) (12) (13) (14) (3) (4) (7)(5)

BPF

FM

S.G

15pF

Zo=75Ω

4

FM FRONT END S1A0497X01

COIL SPECIFICATIONS (BOTTOM VIEW)

T1 (L1) FM RF

* In a Diameter of 5.5 mm

f (MHz) Q

O

Turns

T2 (L2) FM OSC

T3 FM IFT

3
2
1

98 100 4

*

0.8 mm φ UEW

* In a Diameter of 5.5 mm

f (MHz) Q

O

Turns

98 100 3

*

4
5
6

CO (pF) f

1 - 3 1 - 3 1 - 3 4 - 6

(MHz)

75 10.7 115 12 1

Q

O

Turns

0.8 mm φ UEW

KOREA TOKO

0.12 mm φ UEW

5

S1A0497X01 FM FRONT END

T1 (L1) FM RF

KSS-SP1

T2 (L2) FM RF OSC

KSS-SP2

T3 FM IFT

F (MHz) Qo Turns D WIRE

KWANG SUNG PART

98 100 4 5.5¢ 0.8¢ KSS-SPI

F (MHz) Qo Turns D WIRE

KWANG SUNG PART

98 100 3 5.5¢ 0.8¢ KSS-SP2

NO

NO

3
2
1

KSI-FA1

4
5

6

C0 (pF) F

1 - 3 1 - 3 1 - 3 4 - 6

(MHz)

75 10.7 115 12 1 KSI-FA1

Q

0

Turns

KWANG SUNG PART

NO

6

FM FRONT END S1A0497X01

LOCAL OSCILLATION FREQUENCY DEVIATION,

LOCAL OSCILLATION VOLTAGE.SUPLY VOLTAGE

100

∆

0

f

V

OSC

-100

-200
0 2 4 6 8 10

∆f(KHz), LOCAL OSCILLATION FREQUENCY DEVIATION

VCC(V), SUPPLY VOLTAGE

QUIESCENT CIRCUIT CURRENT-SUPPLY VOLTAGE
10

VI = 0

8

6

4

2

(mV), QUIESCENT CIRCUIT CURRENT

CCQ

I

0

0 2 4 6 8 10

VCC(V), SUPPLY VOLTAGE

0

300

200

100

LOCAL OSCILLATION VOLTAGE

AMBIENT TEMPERATURE

300

VCC = 5V
f

= 108MHz

OSC

200

100

(mV), LOCAL OSCILLATION VOLTAGE

OSC

V

(mV), LOCAL OSCILLATION VOLTAGE

OSC

V

0

0 20 40 60 80-20

Ta(°C), AMBIENT TEMPERATURE

SENSITIVITY-SUPPLY VOLTAGE

40

f = 98MHz
fm = 1KHz

∆

f = 22.5KHz dev.

30

20

), USABLE SENSITIVITY

µ

), -3dB LIMITING SENSITIVITY

µ

(dB

10

(dB

USA

S

I(LIM)

V

S

USA

V

I(LIM)

0

0 2 4 6 8 10

VCC(V), SUPPLY VOLTAGE

SENSITIVITY-AMBIENT TEMPERATURE

40

VCC = 5V

f = 98 MHz

fm = 1KHz

∆

30

f = 22.5KHz dev.

20

), USABLE SENSITIVITY

µ

), -3dB LIMITING SENSITIVITY

µ

(dB

10

(dB

USA

S

I(LIM)

V

0

-20 0 20 40 60 80
Ta(°C), AMBIENT TEMPERATURE

S

V

USA

I(LIM)

LOCAL OSCILLATION FREQUENCY DEVIATION

AMBIENT TEMPERATURE TEMPERATURE

200

VCC = 5V

f = 98 MHz

fm = 1KHz dev.

100

0

100

-200

-20 0 20 40 60 80

f(1KHz), LOCAL OSCILLATION FREQUENCY DEVIATION

∆

Ta(°C), AMBIENT TEMPERATURE

7

S1A0497X01 FM FRONT END

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 VCC-line of Pin 3.
We can expect an improvement of the S/N ratio.

FM ANT

BIAS

1 2 3

15p

1000p

T1

V

CC

75Ω

B. P. F

75Ω

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.

V

CC

IF AMP

V

CC

OSC OUT

MIX

IN

MIX OUT

6

4

BIAS

8

FM FRONT END S1A0497X01

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

MIX

OSC BUFF

8

15p

15p

9

S1A0497X01 FM FRONT END

DC - AC CONVERTER TOKO.INC

5CDM - 658N - 1085 TK11822M

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 )

APPLICATION CIRCUIT

U-COM CONTROL

GLR

/50V4.7µF

C35

Q1

R2002

C5

/50V

4.7µFC27

SW1

C26

Q1

4.7kΩ

0.047µF

R5

C15

0.068µF

C4

330pF

X2

450K

0.022µF
C13

F1

R2002

R3

10kΩ

/50V4.7µF

/50V4.7µF

C24

13

14

X1

456K

15

C16

0.082µF

17 16

18

1µF

C14

19

20

S 1 A 2 2 9 8 A 0 1

21
22

23

24

T1

R7

390Ω

R6

2.7kΩ

FM FRONT END

S 1 A 0 4 9 7 X 0 1

2 3 4 5 6 7 8 9
1

R4

Q6

C945

0.018µF C22

0.018µF C23

12

11

10
9

8

7
6

IF + MPX

5

4

3

2

1

F2

10.7MHz

Q5

C1674

C30

100pF

T3

C2

5pF

C12

0.047µF

BPF

MUTE

BUZZER

Ω

10k

Q7

C945

R16 560Ω

R15 560Ω

0.01µF

C34

4.7µF

/50V

C32

0.022µF

C33

0.01µF

C31

C38

470pF

20pF

C39

R14 100kΩ

20pF
C42

C41

8pF

C40

0.022µF
100kΩ

R17

0.022µF
C36

R13

120Ω

R12

1kΩ

0.047µF

C7

100µF

/50V

C8

L1

C6

15pF

C1

8pF

C3

470pF

L2

§Ü

C18

8pF

C17

470

R9

33kΩ

C11

0.047µF

VDD

FM OSC

AM OSC

T2

AM ANT

0.047µF
C43

100pF

C20

Q10

C1674

R5

100kΩ

Q3

C14

100pF

33kΩ
R1

Q4

R10

10Ω

C29

0.047µF

ST

GND

SD/IF

RADIO ON

100µF

/10V

R20

4.7kΩ

C46

0.047µF

C47

4

3

6pF

C50

8pF

C51

4 613CO1

3V

8V

GND

R21

4.7kΩ

/10V100µF

C49

C48

0.047µF

0.047µF

H

C45

L5U2

100µ

6125

12

2

1

C44

39pF

A733

270kΩ5.6kΩ

100pF

9

10

100pF

11

100pF

12

13

14

22k

Ω

B U 2 6 1 4 - P L L

Ω

2.2k

10kΩ

223pF

/50V2.2µF

10kΩ

C21

0.047µF

4.7kΩ

100µH

L3

R8

3

4t

¥÷

15

16

22pF

22pF

1 2 3 4 5 6 7 8

0.6

L1 :

FM RF ( KSS-SP1 : KWANG SUNG )

L2 :

10