SAMSUNG S1A0426C01

AM/FM 1 CHIP RADIO
S1A0426C01
INTRODUCTION
The S1A0426C01 is a monolithic integrated circuit designed for
radio-cassette tape recorders, clock radios and headphone
radios.
30−SDIP−400
FUNCTIONS
•
•
•
•
•
AM/FM RF AMP
AM AGC Control
Audio Power AMP
DC Volume
FM Quadrature DET
•
•
•
•
•
Local OSC
FM AFC Control
Tuning Indicator
AM/FM IF AMP
AM DET
28−SOP−375
FEATURES
•
Built-in AM/FM Switching Circuit
•
Wide operating supply voltage: VCC = 2V − 8.5V
•
Low current consumption (VCC = 3V)
— FM: ICCQ = 7.0mA (Typ)
— AM: ICCQ = 3.5mA (Typ)
•
High Power Audio Amplifier: 0.5W (typ) at VCC = 6V, RL = 8, THD = 10%
ORDERING INFORMATION
Device
Package
Operating Temperature
S1A0426C01-A0B0
30−SDIP−400
−20°C − +70°C
S1A0426C01-S0B0
28−SOP−375
−20°C − +70°C
1
S1A0426C01
AM/FM 1 CHIP RADIO
BLOCK DIAGRAM
30
GND
AM
OUT
VCC
29
28
(28)
Ripple
Filter
AF IN
DET
OUT
AFC
AGC
AFC
AGC
27
26
25
24
23
22
(27) (26)
(25)
(24)
VOL
(23)
(22)
IF TUNING
GND METER N.C
21
(21)
20
(20)
FM
IF IN
19
AM BAND
IF IN SELECT
18
(19)
(19)
17
(17)
16
(16)
(15)
Tuning
Meter
FM/AM IF DET/AGC
PWR
AM F/E
FM F/E
(1)
1
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
2
3
4
5
6
7
8
9
10
11
12
GND
FM
Disc
VOL
NF
AM
OSC
AFC
FM
OSC
REG
OUT
FM
RF
AMRF
IN
N.C
(12)
13
(13)
14
FM RF RF
IN
GND
(14)
15
FM/AM
IF OUT
NOTE: ( ) 28-SOP Package
ABSOLUTE MAXIMUM RATINGS (Ta = 25°C)
Characteristic
Symbol
Value
Unit
Supply Voltage
VCC
9
V
Power Dissipation
PD
1000
mW
Operating Temperature
TOPR
−20 − +70
°C
Storage Temperature
TSTG
−40 − +125
°C
2
AM/FM 1 CHIP RADIO
S1A0426C01
ELECTRICAL CHARACTERISTICS
(VCC = 6V, Ta = 25°C, FM; ∆f = 22.5kHz, fm = 1kHz, AM; 30% Mod, unless otherwise specified)
Characteristic
FM
AF
Test Condition
Min. Typ. Max. Unit
Quiescent Circuit Current
ICCQ
VI = 0
−
7.0
14.0
mA
F/E Voltage Gain
GV1V
VI(1) = 40dBµ, fc = 100MHz, ∆f = 0
32
39
46
dB
Detect Output Gain
VO(1)
VI(3) = 90dBµ, fi = 10.7MHz
−26
−20
−14
dBm
IF-3 dB Sensitivity
VI (LIM)
Vo(VI3) = 90dBµ, -3dB, fi = 10.7MHz
−
24
32
dBµ
Total Harmonic Distortion
THD1
VI(3) = 90dBµ, fi = 10.7MHz(∆f = 75kHz)
−
0.3
2.0
%
Meter Drive Current
IM (1)
VI(3) = 60dBµ, fi = 10.7MHz
1.8
3.5
7.0
mA
VI = 0
−
3.5
10.0
mA
Quiescent Circuit Current
AM
Symbol
ICCQ(2)
F/E Voltage Gain
GV(2)
VI(2) = 60dBµ, fc = 1660kHz, m=0%
15
22
29
dB
IF Voltage Gain
GV(3)
Vo(3) = -34dBm, fi = 455kHz
14
20
27
dBµ
AM Detect Output Voltage
VO(2)
VI(3) = 85dBµ, fi = 455kHz
−26
−20
−14
dBm
Total Harmonic Distortion
THD2
VI(2) = 95dBµ, fc= 1660kHz, Vcc = 7.8V
−
0.6
2.0
%
Meter Drive Current
IM(2)
VI(3) = 85dBµ, fi = 455kHz
1.3
3.0
7.0
mA
Closed Loop Voltage Gain
GV(4)
Vo(4) = 0dBm, f = 1kHz
27
31.5
36
dB
Total Harmonic Distortion
THD3
Po = 50mW, f = 1kHz
−
0.3
2.5
%
0.4
0.5
−
W
Output Power
PO
RL = 8Ω, THD = 10%, f = 1kHz
3
4
BAT
T
50kΩ
VR
8.2kΩ
S1
220µF
1
30
(1)
(28)
150Ω
*10.7MHz
2
29
3
28
(2)
(27)
0.1µF
4
27
6pF
(3)
(26)
470µF
L4
5
26
6
25
D1
4.7µF
(4)
(25)
10µF
100kΩ
(5)
24
(23)
23
(22)
10µF
22
(21)
4.7µF
L3
1pF
(6)
22pF
7
8
(7)
L2
(8)
18pF
9
S1A0426C01
(24)
0.47µF
1kΩ
0.022µ
F
10
21
(9)
(20)
11
20
2pF
(10)
(19)
10µF
L1
12
19
(11)
(18)
13
18
(13)
(12)
BPF
15
16
(14)
(15)
T1
ANT
* CDA 10.7MG 89-A (MURATA)
10µF
(16)
14
17
C-F
455MHz
330Ω
C-F
10.7MHz
(17)
0.01µF
0.1µF
100pF
2.2kΩ
0.01µ
F
FM
AM
S2
S1A0426C01
AM/FM 1 CHIP RADIO
APPLICATION CIRCUIT