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 Package Operating Temperature S1A2298A01-A0B0 24−SDIP−300 − 20°C − + 75°C 1 S1A2298A01 AM/FM TUNER + MPX BLOCK DIAGRAM FMIF IN AM MIX BYPASS AM IF FM QUAD DET OUT MPX IN LPF1 LPF2 VCO L-OUT R-OUT 24 23 22 21 20 19 18 17 16 15 14 13 FM DET FM IF PHA DET AF PIT PIL DET DET VOC DECODE ECL AM MIX AM/FM MO/ST AM IF ECL AM DET SSC OSC BF BF SW TU LED ST LED 8 9 10 11 12 IF REQ IF CONUNT TU LED ST LED GND AGC 1 2 3 4 5 AMIF IN IF SW AM OSC AMOSC OUT VCC 6 HYS EVEL SW 7 AM AGC LOWOUT IN PIN CONFIGURATION FMIF INPUT 24 AM BYPASS MIX 23 22 AM IF FM QUAD DET OUT 21 20 19 MPX LPF1 INPUT 18 LPF2 VCO L-OUT ROUT 17 16 15 14 13 8 9 10 11 12 ST LED GND S1A2298A01 2 1 2 AMRF INPUT IF SW 3 4 5 6 7 AM AMOSC VCC AGC LOWCUT OUTPUT IF IF TU REQ COUNT LED AM/FM TUNER + MPX S1A2298A01 PIN FUNCTION Pin No Symbol I/O Function 1 AM RF I AM RF Input Pin 2 IF SW I IF GAIN Control Pin 3 AM OSC O AM Oscillator Pin 4 AM OSC BF O AM Oscillator Buffer Pin 5 VCC 6 AM LOW CUT O AM Low Cut Pin 7 AGC O AGC Pin 8 IF REQ O IF Count Control Pin 9 IF COUNT O IF Count Pin 10 TU LED O Tuning LED Output Pin 11 ST LED O Stereo LED Output Pin 12 GND 13 R-OUT O R-OUT Output Pin 14 L-OUT O VCO Output Pin 15 VCO O VCO Output Pin 16 LPF2 O Low Pass Filter 2 Pin 17 LPF1 O Low Pass Filter 1 Pin 18 MPX I MPX Input Pin 19 DET O AM/FM Detector Output Pin 20 QUAD O Quadrature Detector Pin 21 AM IF I AM IF Input Pin 22 BYPASS 23 AM MIX O AM Mixer Pin 24 FM IF I FM IF Input Pin VCC Pin Ground Pin AM/FM Bypass Pin ABSOLUTE MAXIMUM RATING (Ta = 25°C) Characteristic Symbol Value Unit Supply Voltage VCC 8 V Power Dissipation PD 1200 mW Operating Temperature TOPR −20 − +75 °C Storage Temperature TSTG −55 − +150 °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 = 10kΩ • AM: fC = 1MHz, fm = 1kHz, MOD = 30%, SW1 = 10kΩ • MPX: fm = 1kHz, L + R = 90%, Pilot = 10%, VI = 150mV Characteristic Symbol Test Conditions ICCQ1 ICCQ2 FM, VI = 0 AM, VI = 0 FM -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 VI(SEN) VO S/N AMR THD VL(on) Fif1 F1/8if2 Vif1 V1/8if2 Sif1 Sif2 Sif3 Sif4 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 = 0.51kΩ, SW2 = GND SW1 = 0, SW2 = Vcc SW1 = 0.51kΩ, SW2 = Vcc AM 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 VO VO THD S/N VL(on) VOSC Vif Sif5 Sif6 Sif7 Sif8 VI = 26dBu VI = 60dBu VI = 60dBu VI = 60dBu VI = variable VI = 0 VI = 39dBu SW1 = 0, SW2 = GND SW1 = 0.51kΩ, SW2 = GND SW1 = 0, SW2 = Vcc SW1 = 0.51kΩ, SW2 = Vcc Quiescent Circuit Current 4 Min. Typ. Max. Unit 6.5 7 9.5 10 13.5 14 mA mA 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 dBu mV dB dB % dBu MHz MHz mVpp mVpp dBu dBu dBu dBu mV mV % dB dBu mV mV dBu dBu dBu dBu AM/FM TUNER + MPX 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 S1A2298A01 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. Typ. Max. Unit 35 35 35 − − 250 −5 −1 68 − 1 0 −3.5 42 42 42 0.2 0.2 350 -3 0 78 8 2 1.3 −1.3 − − − 1.0 1.0 − −1 +1 − 15 5 3.15 0 dB dB dB % % mW dB dB dB mV mV % % 5 AM RF IN 51Ω 50Ω 0.022µF 270 Ω 2K A 10k Ω 1 24 100kΩ A 1/8 IF B IF T1 51Ω C SW2 B 1SV10 0 3 2 SW1 22 23 T 2 0.022 µF C-F 450B 15pF 4 21 51pF 50 Ω 0.022µF 0.033 µF 0.01µF 5 20 1kΩ 19 330pF 18 VCO 7 8 SW3 330pF 9 560 Ω 560 Ω A 11 10 B 12 13 220k Ω VCO 4.7µF 4.7µF 0.01 µF MPX IN 0.01 µF 14 C-F CSB456F1 8 12kΩ 15 AM FM 16 0.082 µF 22kΩ ON B 0.068 µF 17 OFF A 0.022 µF 4.7µF 6 S1A2298A01 6800pF SW7 24kΩ 0.022 µF C-F 10.7MAS L 2.2mH * 10.7MHz 100 µF 0.082 µF 0.01µF SW6 STOP 390 Ω SW8 100kΩ SW9 0.1µF LPF 220µF Vcc2 (8V) MPX OUT SW10 4.7kΩ Vcc1 * CDA 10.7MG 65-A (MURATA) 100kΩ 10 µF KSC945 3kΩ SW5 AM B KSC945 3kΩ FM A 100kΩ 100kΩ 2.2µ F 220µF 6 0.022µF DCT OUT S1A2298A01 AM/FM TUNER + MPX TEST CIRCUIT AM/FM TUNER + MPX S1A2298A01 COIL CIRCUIT No Function of (kHz) Q L (uH) P (pF) Turns 1-2 2-3 1-3 1-4 4-6 Write (mmφ) T1 AM OSC 796 115 288 − 13 73 − − 32 0.08 T2 AM IFT 455 120 − 75 − − 180 − 15 0.06 T1 V/D 4 3 PIN3 T2 VCC 2 4 C.F 6 VCC 2 6 1 VCC 3 PIN23 1 AM OSC V/D 3 Pin 3 2 Vcc 1 4 NO F (kHz) Qo T1 796 115 Turns C.L KWANG SUNG PART NO 288 uH KSI-AO5 180 pF KSI-AA1 6 KSI-AO5 AM IFT T2 Vcc 3 4 CF Pin 3 1 6 Vcc 455 120 4-6 1-2 2-3 32 13 73 4-6 1-3 14 146 KSI-AA1 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 1.5kΩ. 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 Ω, 0.51 KΩ, 10 KΩ) 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 6.1kΩ, SIGNAL WAVE FORM is the rectangle wave, and the voltage scale of the OSC buffer OUTPUT is 500mVp-p. 5) MPX INPUT IMPEDANCE: 25kΩ OUTPUT IMPEDANCE: 5kΩ 8 AM/FM TUNER + MPX S1A2298A01 MONO FM IF-IN 0.1µ F 0.082µF AM FM CSB456F18 0.022µ F 0.047µF 4.7kΩ * 10.7MHz C-F 10.7MHz 0.068µF C-F 450kHz SW7 C-F APPLICATION CIRCUIT 0.01µ F 0.01µ F R-OUT L-OUT 24 23 22 21 20 19 18 17 16 15 14 13 8 9 10 11 12 S1A2298A01 1 2 3 4 5 6 7 AM ANT 0.01µ F 0.01µ F 4.7µ F 0.022µ F IF 560Ω 1/8 IF OSC OUT IF RFO IF OUT 560Ω GND * CDA 10.7MG 65-A (MURATA) 9 L2 3 0.6¥÷ 4t 100pF C14 Q3 C1 8pF C3 470pF L1 100kΩ R5 C6 15pF 9 C8 R1 33kΩ T3 Q10 C1674 FM RF ( KSS-SP1 : KWANG SUNG ) R10 10Ω Q4 C18 8pF C2 5pF 8 0.047µF C21 100pF C20 R12 1kΩ 100pF C30 R6 2.7kΩ 10kΩ R13 120Ω Q5 C1674 R7 390Ω 223pF 1 16 2.2kΩ 2 15 13 12 AM ANT 11 2 1 3 4 5 6 C39 20pF 7 10 3 22 8 9 T2 C38 470pF 23 24 BU2614 - PLL 14 C40 8pF C41 0.022µF F2 10.7MHz 10kΩ C43 2.2µF/50V 0.022µF 7 C7 0.047µF 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 ) L2 : L1 : C29 0.047µF R9 33kΩ C11 0.047µF C17 470§Ü 6 C36 C12 0.047µF 5 R17 100kΩ BPF 4 R14 4 20 19 18 C14 1µF 17 4.7kΩ 13 12 14 5 6 7 11 10 9 1 3 39pF C44 6pF 8pF 1 2 12 3 U2 4 6 12 5 DC - AC CONVERTER CO1 6 4 C50 C51 Q6 C945 C24 4.7µF /50V C26 4.7µF /50V 5CDM - 658N - 1085 8 X1 456K Q1 R2002 15 C16 16 S1A2298A 0 1 IF + MPX 21 10.7M 330pF C4 C33 0.022µF 3 C42 20pF 0.068µF C32 S1A0497X 0 1 FM FRONT END 100pF C5 R5 0.047µF C15 4.7µF/50V 2 100µF /50V R8 L3 4.7kΩ 100µ H 100kΩ 100pF 560Ω R15 F1 270kΩ 560Ω R16 1 22kΩ 22pF 0.047µF 22pF T1 A733 C23 0.018µF 0.082µF C34 0.01µF C22 C13 100pF C31 0.01µF 5.6kΩ R4 10kΩ L5 TOKO.INC 100µH 4.7kΩ TK11822M R20 Q7 C945 R3 10kΩ 4.7µF /50V SW1 C27 C47 0.047µF C45 0.047µF 0.018µF C35 4.7µF /50V C46 100µF /10V X2 C48 0.047µF 10 C49 100µF/10V Q1 R2002 R21 4.7kΩ L 8V GND 3V RADIO ON ST SD/IF GND VDD AM OSC FM OSC BUZZER MUTE R G S1A2298A01 AM/FM TUNER + MPX APPLICATION CIRCUIT U-COM CONTROL 0.022µF