SAMSUNG S1A0429A01-S0B0

FM 1 CHIP RADIO
S1A0429A01
INTRODUCTION
16−SOP−225
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
• RF input stage
• Mixer
• Mute control
• Local OSC
• IF Amp
• Earphone drive amp
FEATURES
•
Minimum number of external parts required
•
Single trimmer tuning
•
No FM det coil
•
FLL IF detect system (76kHz)
•
Operating voltage: VCC = 1.8V − 6.0V
ORDERING INFORMATION
Device
Package
Operating Temperature
S1A0429A01-S0B0
16−SOP−225
−10°C − + 70°C
1
S1A0429A01
FM 1 CHIP RADIO
BLOCK DIAGRAM
MPX
FILTER
16
15
MPX
OUTPUT BYPASS RF IN
14
13
+
AF
−
MPX
FILTER
SINGLE
STRENGTH AF
IF FILTER
12
11
10
9
RF
AMP
MIX
MUTE CONTROL
IF STAGE
DEMODULATOR
& CORRELATOR
1
DEMOD OUT
2
MUTE
3
GND
STAB
OSC
4
5
6
TUNE
IF IN(-)
Vcc
7
8
IF FILTER
ABSOLUTE MAXIMUM RATINGS ( Ta = 25°C )
Characteristic
Symbol
Value
Unit
Supply Voltage
VCC
7
V
Oscillator Voltage
VOSC
−0.5 − + 0.5
V
Operating Temperature
TOPR
−10 − + 70
°C
Storage Temperature
TSTG
−55 − + 150
°C
Thermal Resistance Junction to Ambient
REJA
300
K/W
2
FM 1 CHIP RADIO
S1A0429A01
ELECTRICAL CHARACTERISTICS
MONO CONDITION: f = 98MHz, fm = 1kHz, ∆f = ± 22.5kHz, V = 50dBµ, Ta = 25°C, VCC = 3V
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
ICCQ
VI = 0
−
6.3
−
mA
Sensitivity
SVI1
SVI2
−3dB: Mute Disable
SIN = 26dB: Mute Enable
−
12
17
−
dBµ
dBµ
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
VOSC
−
−
250
−
mV
AFC Range
∆AFC
−
−
160
−
kHz
Mute Range
MR
−
−
120
−
kHz
Band Width
BW
−
10
−
kHz
AF Output Voltage
VO1
−
90
−
mV
MONO
Quiescent Circuit Current
∆VO = 3dB
Pre-Emphasis t = 5kHz
−
3
S1A0429A01
FM 1 CHIP RADIO
TEST CIRCUIT
Field Strength
S.G
AF OUT PUT
75Ω
8.2kΩ
4700pF
0.1µ F
16
3300pF
15
220pF
14
13
220pF
12
11
10
9
6
7
8
S1A0429A01
1
2
3
4
5
0.01µ F
10kΩ
0.1µ F
820pF
56nH
0.1µ F
1500pF
0.01µ F
VCC
Figure 1. Test Circuit for Mono Operation
4
0.1µ F
FM 1 CHIP RADIO
S1A0429A01
Field
Strength
L
(MONO.STEREO)
STEREO
DECODER
Vmux
680pF
2200pF
S.G
R
Rs = 75 Ω
10k Ω
0.1µ F
3300pF
1kΩ
3300pF
220pF
220pF
0.1µ F
16
15
14
13
12
11
10
9
6
7
8
S1A0429A01
1
2
3
4
5
0.01 µ F
330pF
0.01 µF
0.1µ F
56nH
0.1µ F
1500pF
V CC
Figure 2. Test Circuit for Stereo Operation
5
S1A0429A01
FM 1 CHIP RADIO
APPLICATION CIRCUIT
AF OUTPUT
FM ANT
10k Ω
220pF
0.1µ F
56pF
8.2k Ω
68pF
3300pF
3300pF
1kΩ
16
15
14
13
12
11
10
9
6
7
8
S1A0429A01
1
2
3
4
5
0.01 µ F
820pF
VCC
6
56nH
39pF
22pF
0.1µ F
0.01 µ F
0.1 µF
1500pF
0.1 µF