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AM/FM TUNER + MPX
S1A2298A01
INTRODUCTION
The S1A2298A01 is a monolithic integrated circuit which consists of an FM IF AMP, FM QUAD DET, AM IF AMP, AM DET, MPX block and Counter output pin for a DTS (Digital Tuning System) set. It is designed for use in portable radio cassette recorders. 24-SDIP-300
FEATURES
* * * * AM/FM IF, 1 Chip for DTS Wide Operating Voltage: VCC = 1.8V - 7V Adjust free FM Quadrature Detector djust free MPX VCO
ORDERING INFORMATION
Device S1A2298A01-A0B0 Package 24-SDIP-300 Operating Temperature - 20C - + 75C
1
S1A2298A01
AM/FM TUNER + MPX
BLOCK DIAGRAM
FMIF IN 24
AM MIX 23
BYPASS 22
AM IF 21
FM QUAD 20
DET OUT 19
MPX IN 18
LPF1 17
LPF2 16
VCO 15
L-OUT 14
R-OUT 13
FM DET FM IF ECL AF PHA DET PIT PIL DET DET VOC DECODE
AM MIX
AM IF AM DET BF
AM/FM MO/ST ECL EVEL SW HYS
SSC
OSC
BF
AGC
SW
TU LED
ST LED
1 AMIF IN
2 IF SW
3 AM OSC
4 AMOSC OUT
5 VCC
6
7
8 IF REQ
9 IF CONUNT
10 TU LED
11 ST LED
12 GND
AM AGC LOWOUT IN
PIN CONFIGURATION
FMIF INPUT 24
AM BYPASS MIX 23 22
AM IF 21
FM QUAD 20
DET OUT
MPX LPF1 INPUT 18 17
LPF2 16
VCO L-OUT 15 14
ROUT 13
19
S1A2298A01
1 AMRF INPUT
2 IF SW
3
4
5
6
7
8
9
10
11 ST LED
12 GND
AM AMOSC VCC AGC LOWCUT OUTPUT
IF IF TU REQ COUNT LED
2
AM/FM TUNER + MPX
S1A2298A01
PIN FUNCTION
Pin No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Symbol AM RF IF SW AM OSC AM OSC BF VCC AM LOW CUT AGC IF REQ IF COUNT TU LED ST LED GND R-OUT L-OUT VCO LPF2 LPF1 MPX DET QUAD AM IF BYPASS AM MIX FM IF O I O O O O O I O O I O O O O O O I/O I I O O AM RF Input Pin IF GAIN Control Pin AM Oscillator Pin AM Oscillator Buffer Pin VCC Pin AM Low Cut Pin AGC Pin IF Count Control Pin IF Count Pin Tuning LED Output Pin Stereo LED Output Pin Ground Pin R-OUT Output Pin VCO Output Pin VCO Output Pin Low Pass Filter 2 Pin Low Pass Filter 1 Pin MPX Input Pin AM/FM Detector Output Pin Quadrature Detector Pin AM IF Input Pin AM/FM Bypass Pin AM Mixer Pin FM IF Input Pin Function
ABSOLUTE MAXIMUM RATING (Ta = 25C)
Characteristic Supply Voltage Power Dissipation Operating Temperature Storage Temperature Symbol VCC PD TOPR TSTG Value 8 1200 -20 - +75 -55 - +150 Unit V mW C C
3
S1A2298A01
AM/FM TUNER + MPX
ELECTRICAL CHARACTERISTICS
(Ta = 25 C, VCC = 3 V, unless otherwise specified) * FM: fC = 10.7MHz, fm = 1kHz, f = 22.5kHz, SW1 = 10k * * AM: fC = 1MHz, fm = 1kHz, MOD = 30%, SW1 = 10k MPX: fm = 1kHz, L + R = 90%, Pilot = 10%, VI = 150mV Characteristic Quiescent Circuit Current -3 dB Limiting Sensitivity Detector Output Voltage Signal to Noise Ratio AM Rejection Ratio Total Harmonic Distortion Lamp On Level IF Countout Frequency 1 IF Countout Frequency 2 IF Countout Voltage 1 IF Countout Voltage 2 IF Count Sensitivity 1 IF Count Sensitivity 2 IF Count Sensitivity 3 IF Count Sensitivity 4 Detector Output Voltage 1 Detector Output Voltage 2 Total Harmonic Distortion Signal to Noise Ratio Lamp ON Level Oscillation Voltage IF Count Voltage IF Count Sensitivity 5 IF Count Sensitivity 6 IF Count Sensitivity 7 IF Count Sensitivity 8 Symbol ICCQ1 ICCQ2 VI(SEN) VO S/N AMR THD VL(on) Fif1 F1/8if2 Vif1 V1/8if2 Sif1 Sif2 Sif3 Sif4 VO VO THD S/N VL(on) VOSC Vif Sif5 Sif6 Sif7 Sif8 Test Conditions FM, VI = 0 AM, VI = 0 VO = -3dB VI = 80dBu VI = 80dBu VI = 80dBu VI = 80dBu VI = variable VI = 20dBu VI = 80dBu VI = 61dBu VI = 61dBu SW1 = 0, SW2 = GND SW1 = 0.51k, SW2 = GND SW1 = 0, SW2 = Vcc SW1 = 0.51k, SW2 = Vcc VI = 26dBu VI = 60dBu VI = 60dBu VI = 60dBu VI = variable VI = 0 VI = 39dBu SW1 = 0, SW2 = GND SW1 = 0.51k, SW2 = GND SW1 = 0, SW2 = Vcc SW1 = 0.51k, SW2 = Vcc Min. 6.5 7 Typ. 9.5 10 Max. 13.5 14 Unit mA mA dBu mV dB dB % dBu MHz MHz mVpp mVpp dBu dBu dBu dBu mV mV % dB dBu mV mV dBu dBu dBu dBu
FM
41 46 51 50 75 100 55 65 - - 38 - - 0.2 1.0 44 49 54 - 10.7 - 1,3374 1,3375 1,3376 350 500 - 350 500 - 69 76 83 61 68 75 70 77 83 62 69 76 10 50 - 31 21 300 350 42 35 42 35 57 75 1 41 26 500 500 49 42 49 42 85 100 2 - 31 - - 56 49 56 49
AM
4
AM/FM TUNER + MPX
S1A2298A01
Characteristic MPX Channel Separation 1 Channel Separation 2 Channel Separation 3 Total Harmonic Distortion Total Harmonic Distortion Maximum Input Voltage Voltage Gain Channel Balance Signal to Noise Ratio Lamp On Level Lamp Hysteresis Capture Range Capture Range
Symbol CS1 CS2 CS3 THD THD VI(MAX) GV CB S/N VL(on) HY CR(H) CR(L)
Test Conditions Stereo, fm = 100Hz Stereo, fm = 1kHz Stereo, fm = 10kHz Stereo Mono Stereo, THD = 3% Mono Mono Mono Pilot Pilot Pilot Pilot
Min. 35 35 35 - - 250 -5 -1 68 - 1 0 -3.5
Typ. 42 42 42 0.2 0.2 350 -3 0 78 8 2 1.3 -1.3
Max. - - - 1.0 1.0 - -1 +1 - 15 5 3.15 0
Unit dB dB dB % % mW dB dB dB mV mV % %
5
S1A2298A01
TEST CIRCUIT
SW6
SW7
330pF
0.068 F
C-F 10.7MAS L 1k 0.022 F VCO AM FM 4.7F 4.7F STOP 0.01 F 0.01 F
* 10.7MHz
270 15pF
50
0.082 F 22k
24 17
23
22
21
20
19
18
16
15
C-F CSB456F1 8 12k
T 2
0.082 F
100k
KSC945
51pF
50 51 T1 SW2 B IF 1SV10 0 0.022 F 100 F 0.022 F 4.7F SW3
0.01F
100k
0.022F
2.2mH
100k
3k
3k
AM RF IN
A 1/8 IF
AM/FM TUNER + MPX
* CDA 10.7MG 65-A (MURATA)
100k
560
560
0.022F
220F
51
0.01F
10k
KSC945
0.022F
OFF A
ON B
220k
100k
6
2.2 F 390 MPX IN 330pF 0.033 F 6800pF Vcc1 C-F 450B 0.1F 220F 24k FM A SW5 AM B 10 F
DCT OUT
14
13
SW8 SW9
SW10
LPF
4.7k
MPX OUT
S1A2298A01
1 8
A SW1 A B C
2
3
4
5
6
7
9
10
11
B
12
VCO
Vcc2 (8V)
2K
AM/FM TUNER + MPX
S1A2298A01
COIL CIRCUIT
No T1 T2 Function AM OSC AM IFT of (kHz) 796 455 Q 115 120 L (uH) 288 - P (pF) - 75 Turns 1-2 13 - 2-3 73 - 1-3 - 180 1-4 - - 4-6 32 15 Write (mm) 0.08 0.06
T1 V/D 3 4 VCC 3
T2 4 C.F
PIN3
2 6 PIN23
2 6 VCC
VCC
1
1
AM OSC V/D Pin 3 Vcc 3 2 1 KSI-AO5 6 4
NO T1
F (kHz) 796
Qo 115 4-6 32
Turns 1-2 13 4-6 14 2-3 73 1-3 146
C.L 288 uH 180 pF
KWANG SUNG PART NO KSI-AO5
AM IFT
T2
Vcc 3 4 CF
455
120
KSI-AA1
Pin 3
1 KSI-AA1
6
Vcc
7
S1A2298A01
AM/FM TUNER + MPX
APPLICATION INFORMATION
1) IF COUNT OUTPUT IF Count Output is determined by the Pin 8 voltage. Tuning LED swiching Count output occurs at pin 9. The output impedance is 1.5k. V8; High (TU-LED ON) : Output Low ( TU-LED OFF) : No output 2) IF Switch IF sensitivity is determined by the resistors of SW1 (0 , 0.51 K, 10 K) regulating the AM mixer and FM IF gain. When SW2 is VCC, the count output frequency is 10.7 MHz. When SW2 is GND, the count output frequency is 1.33375MHz, one eighth of 10.7MHz. 3) AM Low Cut One of the signals which passed through DET AMP is provided to AF AMP, another is converted to AC before its feedback to AGC voltage and they are simultaneously used as a high frequency bypass. 4) AM OSC BUFFER Output Impedance is 6.1k, SIGNAL WAVE FORM is the rectangle wave, and the voltage scale of the OSC buffer OUTPUT is 500mVp-p. 5) MPX INPUT IMPEDANCE: 25k OUTPUT IMPEDANCE: 5k
8
AM/FM TUNER + MPX
S1A2298A01
APPLICATION CIRCUIT
0.082F
0.047F 4.7k
SW7 C-F
C-F 450kHz * 10.7MHz C-F 10.7MHz 0.022 F FM IF-IN 0.068F
MONO
CSB456F18
AM FM
0.01 F
0.01 F R-OUT L-OUT
0.1 F
24
23
22
21
20
19
18
17
16
15
14
13
S1A2298A01
1
AM ANT
2
3
4
5
6
7
8
9
10
11
12
0.01 F 0.022 F IF 1/8 IF OSC OUT
4.7 F
0.01 F 560 IF RFO IF OUT 560 GND * CDA 10.7MG 65-A (MURATA)
9
S1A2298A01
C5 R5 0.047F
X2 G Q1 R2002 C26 4.7F /50V R C27 4.7F /50V C4 0.068F C15 10.7M 0.082F C16
T1 C14 1F X1 456K
C13
0.022F
4.7k
F1
330pF
APPLICATION CIRCUIT
C23
C22
0.018F
0.018F
560
560
C31
C33
C34
100k
R15
L2
L1
0.022F
0.01F
0.047F
C36
C8
C7
100F /50V
R1 33k
C42 20pF
C40 8pF C39 20pF
R14
0.022F
0.01F
C18 8pF
C1 8pF
R17 100k
R9 33k C32
4.7F/50V
R13 120
R16
100pF R5 100pF C20
C43
0.047F
R8
4.7k
L3
100 H
22k
100pF
100pF
100pF
4 3
6
270k
2
1
12 5
C45 0.047F CO1 C44
U2 5.6k 39pF
L5 100H
C48 0.047F
C49 100F/10V
BU2614 - PLL
1 2 3 4 5 6 7 8
A733
1
6
3V
GND 22pF 22pF R21
FM OSC ( KSS-SP2 : KWANG SUNG ) T1 : AM IFT ( 7MC - K5050N : KR TOKO ) AM IFT ( KSI - AA1 : KWANG SUNG ) T2 : AM OSC ( A7BR - KS141010X2 : TOKO ) AM OSC ( KSI - AO5 : KWANG SUNG ) T3 : FM IFT ( A119AC - 680122X3 : KR TOKO ) FM IFT ( KSI-FA1 : KWANG SUNG ) F1 : AHCFM2 - 450BL ( TOKO ) F2 : CFE 10.7MA ( MURATA ) X2 : CDA 10.7MG65-A ( MURATA ) X1 : CFB456F - 18 ( MURATA ) H2 : KV1236Z ( TOKO ) Q3, Q4 : KV1310NT (TOKO )
16 15 14 13 12 11 10 9
C46 100F /10V
AM/FM TUNER + MPX
DC - AC CONVERTER
TOKO.INC
8V 4.7k
U-COM CONTROL
4.7k C51 8pF 6pF C47 0.047F C50
10
Q1 R2002 L SW1 C35 4.7F /50V R6 2.7k R3 10k R4 Q7 C945 10k R7 390
S1A0497X 0 1 FM FRONT END
24 23 22 21 20 19 18 17 16 15 14 13
C24 4.7F /50V
1 T3
C30 100pF R12 1k C41 0.022F C38 470pF Q6 C945
2 Q5 C1674 1 2 3 4 5 6 7 8 9 10 11 12
F2 10.7MHz
3
4
5
6
7
8
9
BPF
S1A2298A 0 1 IF + MPX
C12 0.047F
C2 5pF
C17 470U
470pF
C6 15pF
C11 0.047F
C3
MUTE
BUZZER
Q4 Q10 C1674 AM ANT T2
Q3
FM OSC
C29 0.047F
R10 10
C14
AM OSC
VDD
100k
GND C21 0.047F SD/IF
ST
0.6/ 4t
10k 223pF 2.2F/50V 10k 2.2k
RADIO ON
L1 :
3
FM RF ( KSS-SP1 : KWANG SUNG )
5CDM - 658N - 1085
12 3 4
L2 :
TK11822M R20

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