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AM/FM 1 CHIP RADIO
S1A0427B01
INTRODUCTION
The S1A0427B01 is a monolithic integrated circuit designed for portable AM/FM radios or AM/FM clock radios. 16-DlP-300A
FUNCTIONS
* * * * AM RF & MIX AM AGC AM/FM DET Regulator * * * * AM Local OSC AM/FM IF AMP Audio Power AMP FM AFC Control
FEATURE
* * * Portable AM/FM 1-chip radio Wide operating supply voltage range: VCC = 3V - 12V (Approximately ) (Depending on the internal regulator tolerance) Recommended operating suply voltage: VCC = 4.5V - 9V Vcc RL 8 16 45 * * * 4.5V O O O 6.0V O O O 7.5V O O O 9.0V X O O Line Operated X X O
When using the AC line as an internal shunt regulator mode, it is possible to use a low cost application without a transformer (approximately 42mA) IF AMP gain is determined by the DC voltage appearing at IC Pin 16. Power output: PC = 0.28W (Min.) at THD = 10% (Vcc = 5.5V/8).
ORDERING INFORMATION
Device S1A0427B01-D0B0 Package 16-DlP-300A Operating Temperature 20C - +70C
1
S1A0427B01
AM/FM 1 CHIP RADIO
BLOCK DIAGRAM
AM IF OUTPUT 4
RF GND 3
IF DET AM/FM IF AFC AGC AM/FM IF INPUT BYPASS BYPASS IF OUTPUT INPUT 2 1 16 15 14
VCC 13 VOLTAGE REGULATOR
AM/FM IF AM F/E MIX OSC RF
AM/FM DET
POWER AMP
5
AM OSC
6
AM RF INPUT
7
8
9
10
11
12
RF AUDIO AUDIO RIPPLE AUDIO AUDIO BYPASS DET OUT POWER REJECTION GND POWER OUT
ABSOLUTE MAXIMUM RATINGS (Ta = 25C)
Character istic Supply Voltage Power Dissipation Supply Current Thermal Resistance Junction to Ambient Operating Temperature Storage Temperature Symbol VCC PD ICC REJA TOPR TSTG Value 13 600 44 100 -20 - +70 -55 - +150 Unit V mW mA C/W C C
2
AM/FM 1 CHIP RADIO
S1A0427B01
ELECTRICAL CHARACTERISTICS
(Ta =25C, VCC = 5.5V, fm = 1kHz, AM: f = 1MHz, 30% Mod, FM: f = 10.7MHz f = 22.5kHz, unless otherwise specified) Characteristic Quiescent Circuit Current FM Pin 16 Terminal Voltage -3 dB Limiting Sensitivity Internal Regulated Vtg. Pin 16 Voltage AM Maximum Sensitivity Signal to Noise Ratio Output Power PWR Total Harmonic AMP Distortion Voltage gain Symbol ICCQ V16(FM) VI(LIM) VCC V16 (AM) SMAX S/N PO THD GV Test Conditions SW: FM, Vcc = 3V SW: FM, Vcc = 9V SW: FM, Vcc = 9V, VI = 0 SW: FM, -3dB V16 = 2.4V, V R Min SW: AM, ICC = 42mA SW: AM, VCC = 9V, VI = 0 SW: AM, VCC = 12V VI = 37dB, RL = 8 VI = 37.5dB, RL = 8 PO = 50mW f = 1kHz, THD = 10% VR Min, RL = 8 ICC = 42mA, RL = 45 f = 1kHz, VO = 2V VR Min f = 1kHz, RL = 8, PO = 50mW Min. 7 10 2.0 - 12 1.4 1.5 15 0.28 - - Typ. 12 17 2.4 57 13.2 - 3.0 20 - 0.5 41 Max. 17 23 3.1 - 14.0 1.9 - - - 4.0 - V dB V V V dB W % dB Unit mA
3
S1A0427B01
AM/FM 1 CHIP RADIO
TEST CIRCUIT
V16 VCC T6 C18 470pF C17 C16 470 F 0.047 F T4 4 6 3 2 1 C15 10pF FM AM SW R8 4.7k 3 2 1 T5 C13 470 F C12 220 F C11 0.001 F 6 C11 470 F RL GND 4 POWER OUTPUT 1 2 3 R8 1.2k 6 4
16
15
14
13
12
11
10
9
R6 22k
S1A0427B01
1 2 3 4 5 6 7 8
VR C10 0.022 F 100k 0.01 F T2 C5 1 R2 10k 2pF T3 4 R1 50 C3 220pF 6 1 2 3 C4 0.022 F C2 0.022 F FM IF INPUT FM AM SW AM RF INPUT AUDIO AUDIO DET OUTPUT POWER INPUT C19 3.3 F C7 0.047 F R4 50 2 3 4 6 C6 51pF 1 2 3 4 L1 6 R3 50 6 4 L2 3 2 1 C8 50pF R5 (R = ) 8
4
680pF
AM/FM 1 CHIP RADIO
S1A0427B01
APPLICATION INFORMATION
-- EXTERNAL COMPONENTS
Part Number R5 R7 R8 C2 C4 C7
Influence Purpose Am gain Control FM detector damper FM gain adjust IF bypass IF filter AM bypass Typical 47k (33K - ) 4.7k 470 0.022F 0.022F 0.047F Smaller Than Typ Low AM gain Low detector output, stable IF gain, low FM gain Low FM gain Should not be less than 0.005F Removal may cause IF oscillation Low gain Greater Than Typ AGC Distortion increase, High gain Sharp IF AMP curve High gain, but noise increase High IF Gain, S/N ratio degrade No influence Using over 1 will cause FM distortion at small signal Poor FM frequency response Bass boost affects de-emphasis curve Poor response
C9 C10 C11 C12 C13 C14 C15 C16
Detector filter Audio coupling Audio Input Highcut Ripple filter Audio output coupling Power line filter FM detector phase-shift High freq. (IF) bypass AN AGC time constant and high frequency (IF) bypass
0.01F 0.022F 0.001F 220F 470F 470F 10pF 0.047F
Unstable IF AMP oscillation Lower sensitivity, poor low frequency response Audio oscillation
Poor frequency response & Low gain Improve AC Hum Poor low frequency response Poor AC Hum Narrow IF bandwidth Removal will cause fm oscillation Can achieve optimum output power Improve AC Hum Wide IF bandwidth No influence
C17
0.047F
Charging not recommended
-
5
S1A0427B01
AM/FM 1 CHIP RADIO
FUNCTION DESCRIPTION (PIN 16 DC VOLTAGE)
1. IF Gain Grouping Table (1) Test Condition: VCC = 9V (Pin 13). Pin 8 resistance (AM) = 47k Pin 16 resistance (FM) = 1.2k (2) Grouping Table V16(AM) V16(FM) 2.4 - 2.85V
1.4 - 1.7 V 2B
2. IF gain is determined by DC voltage appeared at IC Pin 16. The DC voltage at Pin 16 to the following values: AM = 1.4 - 1.65V (DC) FM = 1.9 - 2.10V (DC) AM gain can be adjusted by the loading resistor value of Pin 8 (AM) from 33k to infinity. FM gain can be adjusted by the loading resistor value of Pin 16 (FM) from 3k to 680. Recommended resistance (Pin 8, Pin 16). Pin 8 (AM) = 47k Pin 16 (FM) = 470k
6
AM/FM 1 CHIP RADIO
S1A0427B01
APPLICATION CIRCUIT
VCC 220 pF 1 2 3 4 6 T4 3 2 1 10pF 4.7k 3 2 1 T5 6 2.2 T6 6 4 0.1 F 4 220 F SP 100 F 100 F
ANT
GND AM FM 1.5 pF
1000pF 330 F SW1B 100 F
0.002 F 50k VR
22k
16
L3 20pF 15pF 3.3k
15
14
13
12
11
10
9
0.022 F
S1A0427B01
0.01 F
1
* (180k ) KSC 1674-0 680
2
3
4
5
6
7
8
*R 4 6 AM OSC 3 2 1 L1 8.2pF
2pF 1 2 3 2 4 6 T1 3
T2 6 4 3 2 680 1
T3 4 6 FM 220pF 0.022 F AM
AM BAR ANT
L2 SW1A 0.047 F GND
L4
1 0.047 F
820pF 5.1pF 1.8pF L5 20pF 220 1000pF * (56k ) 2.2 F 1000pF 1k
0.047 F
NOTES : 1. SW1 : AM Position. 2. * Marking : Value of C and R have to be selected for good conditions
*C
7
S1A0427B01
AM/FM 1 CHIP RADIO
COIL SPECIFICATION 1
Coil No. T1
f 10.7MHz
QO 120 1-3 1-3
Turns 8T 11T 2T 91T 55T 6T 11T 7T 7T 86T 7T 138T 9T 5T
CO 150 pF
Connections (KOREA TOKO)
3 2 1 6 4
T2
10.7MHz
70 min
4-6 1-2
75 5 pF
3 2 1
4
6
T3 (T6)
455kHz
80 min
2-3 4-6
180 5 pF
3 2 1
4
6
3
T4
10.7MHz
45 min
1-3 1-3
82 3 pF
4
2 1 6
3
4
T5
10.7MHz
25 min
4-6 1-3
180 pF
2 1 6
L1
AM Local Oscillator
3 2
4
90 min
4-6 1-2 (L = 560H ) 3-4 0.8mm UEW TAP 0.32mm UEW 0.8mm UEW
1
6
core: 10 mm X 55 mm
L2
AM ANT
200
1 V.C
2 GND
3 Pin 6
4 GND
L3
FM ANT
5 mm
0.5T 10T
7 mm
L4
Trap FM Oscillator
5 mm 7 mm
L5
4T
-
7 mm
5 mm
8
AM/FM 1 CHIP RADIO
S1A0427B01
Coil No.
f
Q0
Turns
C.L.
Connections (KWANG SUNG PART NO)
3
T1
10.7MHz
120
1-3
8T
150pF
2 1
KSI-FD5 1-3 T2 10.7MHz 70min 4-6 2T 11T
3 4
75pF
2 1 6
KSI-FA2 1-2 T3 (T6) 2-3 455kHz 80min 4-6 6T 91T 55T 180pF
3 2 1 6 4
KSI-AA4
3
4
T4
10.7MHz
45min
1-3
11T
82pF
2 1 6
KSI-FD4 1-3 T5 10.7MHz 45min 4-6 7T 7T
3 4
180pF
2 1 6
KSI-FA4 1-3 L1 AM Local Oscillator 90min 86T
3 4
4-6
7T
2 1 6
KSI-AO4 1-2 L = 560uH L2 AM ANT 200 4-6 9T 138T
core: 10 mm X 55 mm
1 V.C
2 GND
3 Pin 6
4 GND
KSA-ANT560
9
S1A0427B01
AM/FM 1 CHIP RADIO
Coil No.
f
Q0
Turns 5T
C.L.
Connections (KWANG SUNG PART NO)
L3
FM ANT
0.8mm UEW
5 mm
0.5T
7 mm
KSS-SP5
L4
Trap
0.32mm UEW
5 mm
10T
7 mm
KSS-SP4
L5
FM Oscillator
0.8mm UEW
4T
5 mm 7 mm
KSS-SP3
10
AM/FM 1 CHIP RADIO
VCC
T6 0.04F 470F 4.7k T4 SP 2.2k 4.7k 220F T5 100F 22k AM 470 0.02F 220F 50k VR 0.001F 10pF FM T5
APPLICATION CIRCUIT 2
16
15
14
13
12
11
10
9
0.02F
S1A0427B01
47k
ANT
1
2
3
4
5
6
7
8
0.01F
47pF 5pF 1N60 L3 20pF 40pF 5pF 680 KSC 1674-0 100 T1 2pF T2 T3 L5 (AM BAR ANT) 0.04F
KSC 47pF 1674-0
22
L1
L2
330
1k L4 300pF 0.01F L6
0.01F
470
AM FM 140pF
30pF
100k
0.005F
2.2k 0.02F 100F 0.005F
100k 2.2k
0.01F 1k
0.04F
0.02F
S1A0427B01
11
S1A0427B01
AM/FM 1 CHIP RADIO
COIL SPECIFICATION 2
Coil No. f Q0 1-3 T1 10.7MHz 90 4-6 1-3 T2 10.7MHz 60 4-6 1-2 T3 455kHz 100 2-3 4-6 2 127
3 4
Turns 11
C.L.
3
Connections
4
82pF 3 5 390pF
2 1 6
3 2 1
4
6
28 10
180pF
2 1 6
3
4
T4
10.7MHz
45 (Min)
1-3
11
82 pF
2 1 6
1-3 T5 10.7MHz 25 (Min) 4-6 1-2 T6 455kHz 100 2-3 1-3 L6 796kHz 100 4-6
7
3 4
7 50
180pF
2 1 6
3
4
390pF 50 100
2 1 6
3
4
10
360H
2 1 6
12
AM/FM 1 CHIP RADIO
S1A0427B01
Coil No.
f
Q0 1-3
Turns 4-6
C.L.
Connections (KWANG SUNG PART NO)
3
4
T1
10.7MHz
90 11 3
82pF
2 1 6
KSI-FA3 1-3 T2 10.7MHz 60 5 2 4-6
3 4
390pF
2 1 6
KSI-FA5 1-2 2-3 T3 455kHz 100 4-6 10 127 28 180pF
3 2 1 6 4
KSI-AA3
3
4
T4
10.7MHz
45min
1-3
11
82pF
2 1 6
KSI-FD4 1-3 T5 10.7MHz 45min 4-6 7 7
3 4
180pF
2 1 6
KSI-FA4 1-2 T6 455kHz 100 50
3 4
2-3
50
390pF
2 1 6
KSI-AA2 1-3 L6 796kHz 100 100
3 4
4-6
10
360uH
2 1 6
KSI-A03
13
S1A0427B01
AM/FM 1 CHIP RADIO
NOTES
14

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