AM/FM 1 CHIP RADIO
S1A0426C02
1
INTROCUCTION
The S1A0426C02 is a monolithic integrated circuit designed for
radio cassette tape recorders, clock radios and headphone
radios.
FUNCTIONS
FEATURES
Built-in AM/FM Switching Circuit
Wide operating supply voltage: V
CC
= 2V
-
8.5V
Low current consumption (V
CC
= 3V)
-- FM: I
CCQ
= 5.3 mA (Typ)
-- AM: I
CCQ
= 3.4 mA (Typ)
High Power Audio Amplifier: 0.5W (typ) at V
CC
= 6V,
RL = 8
, THD = 10%
ORDERING INFORMATION
AM/FM RF AMP
Local OSC
AM AGO Control
FM AFO Control
Audio Power AMP
Tuning Indicator
DC Volume
AM/FM IF AMP
FM Quadrature DET
AM DET
AUDIO MUTE
Device
Package
Operating Temperature
S1A0426C02-A0B0
30
-
SDIP
-
400
-
20
C
-
+70
C
S1A0426C02-S0B0
28
-
SOP
-
375
-
20
C
-
+70
C
30
-
SDIP
-
400
28
-
SOP
-
375
AM/FM 1 CHIP RADIO
S1A0426C02
3
ELECTRICAL CHARACTERISTICS
(V
CC
= 6 V, Ta = 25
C, FM;
f = 22.5 kHz, fm = 1 kHz, AM; 30% Mod, unless otherwise specified)
Characteristic
Symbol
Test Conditions
Min.
Typ. Max.
Unit
FM
Quiescent Circuit Current
I
CCQ
(1)
V
I
= 0
-
7.0
14.0
mA
F/E Voltage Gain
G
V
(1)
V
I
(1) = 40dB
, fc = 100MHz,
f = 0
32
39
46
dB
Detect Output Gain
V
O
(1)
V
I
(3) = 90dB
, fi = 10.7MHz
-
26
-
20
-
14
dBm
IF-3 dB Sensitivity
V
I (LIM)
Vo(VI3) = 90dB
,
-
3dB, fi = 10.7MHz
-
24
32
dB
Total Harmonic Distortion
THD
1
V
I
(3) = 90dB
, fi = 10.7MHz
(
f = 75kHz)
-
0.3
2.0
%
Meter Drive Current
I
M
(1)
V
I
(3) = 60dB
, fi = 10.7MHz
1.8
3.5
7.0
mA
AM
Quiescent Circuit Current
I
CCQ
(2)
V
I
= 0
-
3.5
10.0
mA
F/E Voltage Gain
G
V
(2)
V
I
(2) = 60dB
, fc = 1660kHz, m = 0%
15
22
29
dB
IF Voltage Gain
G
V
(3)
Vo(3) =
-
34dBm, fi = 455kHz
14
20
27
dB
AM Detect Output Voltage
V
O
(2)
V
I
(3) = 85dB
, fi = 455kHz
-
26
-
20
-
14
dBm
Total Harmonic Distortion
THD
2
V
I
(2) = 95dB
, fc = 1660kHz, Vcc = 7.8V
-
0.6
2.0
%
Meter Drive Current
I
M
(2)
V
I
(3) = 85dB
, fi = 455kHz
1.3
3.0
7.0
mA
AF
Closed Loop Voltage Gain
G
V
(4)
Vo(4) = 0dBm, f = 1kHz
27
31.5
36
dB
Total Harmonic Distortion
THD
3
Po = 50mW, f = 1kHz
-
0.3
2.5
%
Output Power
P
O
R
L
= 8
, THD = 10%, f = 1kHz
0.4
0.5
-
W
Mute Level
M
L
Po = mW, Vi(4) = 30dBm
1kHz, V1(3) = FF
8
15
22
dB
PDF 
ZIP
