FM 1 CHIP RADIO
S1A0429A01
1
INTRODUCTION
The S1A0429A01 is a monolithic integrated circuit designed for
Portable FM radios.
It consists of an RF input stage, mixer, IF, mute control and
loop (earphone drive) Amp.
It is suitable for a pocket-size radio.
FUNCTIONS
FEATURES
Minimum number of external parts required
Single trimmer tuning
No FM det coil
FLL IF detect system (76kHz)
Operating voltage: V
CC
= 1.8V
-
6.0V
ORDERING INFORMATION
RF input stage
Local OSC
Mixer
IF Amp
Mute control
Earphone drive amp
Device
Package
Operating Temperature
S1A0429A01-S0B0
16
-
SOP
-
225
-
10
C
-
+ 70
C
16
-
SOP
-
225
FM 1 CHIP RADIO
S1A0429A01
3
ELECTRICAL CHARACTERISTICS
MONO CONDITION: f = 98MHz, f
m
= 1kHz,
f = 22.5kHz, V = 50dB
, Ta = 25
C, V
CC
= 3V
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
Quiescent Circuit Current
I
CCQ
VI = 0
-
6.3
-
mA
M
O
N
O
Sensitivity
S
VI1
S
VI2
-
3dB: Mute Disable
SIN = 26dB: Mute Enable
-
12
17
-
dB
dB
Signal to Noise Ratio
S/N1
-
-
60
-
dB
Total Harmonic
Distortion
THD1
THD2
f = 22.5kHz
f = 75kHz
-
0.7
2.3
-
%
%
AM Rejection Ratio
AMR
AM: fm = 1kHz, m = 80%
FM: fm = 1kHz,
f = 75kHz
-
50
-
dB
Oscillator Voltage
V
OSC
-
-
250
-
mV
AFC Range
AFC
-
-
160
-
kHz
Mute Range
MR
-
-
120
-
kHz
Band Width
BW
VO = 3dB
Pre-Emphasis t = 5kHz
-
10
-
kHz
AF Output Voltage
V
O1
-
-
90
-
mV
PDF 
ZIP
