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
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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
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