SA2132
AM/FM RADIO RECEIVER
DESCRIPTION
SA2132 is AM/FM radio IC (FM F/E+AM/FM IF) which is designed for
AM/FM radios.
FM local oscillation voltage is set up low relativity, for NEW FCC.
SOP-16-225-1.27
FEATURES
* For NEW FCC
* AM detector coil, FM IFT, IF coupling condenser are not needed.
* For adopting ceramic discriminator, it is not necessary to adjust the
FM quad detector circuit.
* Built in varactor diode for AFC
* Low supply current: (V
CC
=3V, T
A
=25°C)
I
CCq
(FM)=7.3mA (typ.)
I
CCq
(AM)=3.6mA (typ.)
* Operating supply voltage range: V
CC
=1.8~7V (T
A
=25°C)
DIP-16-300-2.54
ORDERING INFORMATION
Device
SA2132
SA2132S
Package
DIP-16-300-2.54
SOP-16-225-1.27
BLOCK DIAGRAM
AM RF IN
FM RF OUT
AM/FM SW
FM OSC
AM OSC
AFC
DET OUT
QUAD
16
15
14
13
12
11
10
9
AM
RF
FM/AM
FM OSC
AM OSC
AF
BUFF
FM DET
AM DET
FMRF
FM MIX
AM MIX
AGC
FMIF
AMIF
1
FM RF IN
2
RF GND
3
MIX OUT
4
AGC
5
V
CC
6
FM IF IN
7
AM IF IN
8
GND
ABSOLUTE MAXIMUM RATINGS
(T
A
=25°C)
Characteristic
Supply Voltage
Power Dissipation
Operating Temperature
Storage Temperature
Symbol
V
CC
P
D
(Note 1)
T
opr
T
stg
Value
8
750
-25~75
-55~150
Unit
V
mW
°C
°C
Note 1: Detected above T
A
= 25°C in the proportion of 6mW/°C for SA2132.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
Rev: 2.3
2005.12.29
Page 1 of 8
SA2132
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, T
A
=25°C, V
CC
=3 V,F/E : f=98MHz, fm=1
kHz FM IF : f=10.7MHz,
∆f
=±75 kHz, fm= 1kHz AM : f=1 MHz, MOD=30%, fm=1 kHz)
Characteristic
Supply Current
Input Limiting Voltage
F/E
Quiescent Sensitivity
Local OSC Voltage
Input Limiting Voltage
FM IF
Recovered
Voltage
Signal to Noise Ratio
FM IF Total Harmonic Distortion
AM Rejection Ratio
Voltage Gain
Recovered
AM
Voltage
Signal to Noise Ratio
Total Harmonic Distortion
Output
Output
Symbol
I
CC
(FM)
I
CC
(AM)
V
in
(lim)
QS
V
OSC
note
Test Condition
FM mode, V
in
=0
AM mode, V
in
=0
-3dB limiting point
S/N=40dB
f
OSC
=108 MHz
Min.
--
--
--
--
--
38
180
--
--
--
20
55
--
--
Typ.
7.3
3.6
10
15
130
43
240
72
0.5
60
38
80
41
1.0
Max.
11.0
7.0
--
--
--
48
300
--
--
--
75
110
--
--
Unit
mA
dBµV
EMF
dBµV
EMF
mV
rms
dBµV
EMF
mV
rms
dB
%
dB
mV
rms
mV
rms
dB
%
V
in
(lim) IF -3dB limiting point
V
OD
S/N
THD
AMR
GV
V
OD
S/N
THD
V
in
= 80dBµV EMF
V
in
= 80dBµV EMF
V
in
= 80dBµV EMF
V
in
= 80dBµV EMF
V
in
= 28dBµV EMF
V
in
= 60dBµV EMF
V
in
= 60dBµV EMF
V
in
= 60dBµV EMF
Note: This characteristics measure in test circuit 2, others measure in test circuit 1.
PIN CONFIGURATION
FM RF IN
RF GND
MIX OUT
AGC
VCC
FM IF IN
AM IF IN
GND
1
2
3
16
15
14
AM RF IN
FM RF OUT
AM/FM SW
FM OSC
AM OSC
AFC
DET OUT
QUAD
SA2132
4
5
6
7
8
13
12
11
10
9
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
Rev: 2.3
2005.12.29
Page 2 of 8
SA2132
PIN DESCRIPTION
Pin No
Symbol
Internal Circuit
16
DC Voltage (V)
AM
FM
1
RFGND
2
1K
2
RF GND (GND for FM
RF, FM OSC stage)
V
CC
5
-
3
60 pF
1
FM RF IN
0
0.8
0
0
FM
3
MIX OUT
MIX
AM
MIX
8 GND
3.0
2.9
RF GND 2
V
CC
5
20K
100K
output)
GND 8
(AGC)
(IF level)
5
VCC (VCC for AM, FM
IF stage)
V
CC
5
330
-
5K
4
AGC
(FM
IF
level
4
1K
0
0
1K
3.0
3.0
6
FM IF IN
GND
6
3.0
3.0
8
3K
7
AM IF IN
7
3K
2.3
2.6
GND 8
8
GND (GND for AM,
FM IF stage)
V
CC
5
-
9
0
0
9
QUAD
2.5
2.2
GND
8
(To be continued)
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
Rev: 2.3
2005.12.29
Page 3 of 8
SA2132
(Continued)
Pin No
Symbol
V
CC
5
Internal Circuit
DC Voltage (V)
AM
FM
AM
FM
750
10
10
DET OUT
a
b
GND 8
a
b
LOW
LOW
FM,HIGH
AM,HIGH
AM
FM
1.0
0.9
11
--
2
--
11
AFC
12
V
CC
5
3.0
3.0
12
AM OSC
GND 8
13
14
13
FM OSC
RF GND 2
3.0
3.0
AM/FM SW
•
SW condition
14
V14=VCC→FM
V14=OPEN→AM
•
VCC for FM RF, FM
OSC stage
15
FM RF OUT
V
CC
5
AGC
16
14
--
8 GND
3.0
Cf -Pin 1
3.0
3.0
16
AM RF IN
3.0
3.0
GND 8
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
Rev: 2.3
2005.12.29
Page 4 of 8
SA2132
TEST CIRCUIT
(1)
1K
AM
4700pF
2.2
FM
F
0.033
22K
V
CC
= 3 V
220 F
AM
330pF
AM RF IN
2K
0.022
75
75
Vin
~
F
16
L1
15
0.033 F
FM
L2
14
13
12
T1
11
10
9
CR
0.033 F
8
V
CC
= 3 V
220 F
F
DET OUT
SA2132
1
FM RF IN
BPF
75
2
T2
3
4.7 F
4
5
6
7
CF
1
0.01 F
CF
2
BPF: GFWB7 (Soshin Electric Co., Ltd.)
CF
1
: SFE10.7MA5 (Murata Co., Ltd.)
CF
2
: SFU455B ( Murata Co., Ltd.)
CR: CDA10.7 MG92C (Murata Co., Ltd.)
9
8
0.033
F
330
Vin
~
FM-IF IN
50
270
Vin
~
TEST CIRCUIT (
2)
8V
2SK161
470K
F
0.1
GND
470K
1K
5pF
FM OSC
monitor
220
(Note)
12
11
16
15
0.01
F
L2
14
13
F
10
SA2132
1
2
3
4
5
6
7
Note : FET buff voltage gain
≅
0dB
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
Rev: 2.3
2005.12.29
Page 5 of 8
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