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 4.5V 6.0V 7.5V 9.0V Line Operated 8Ω O O O X X 16Ω O O O O X 45Ω O O O O O RL • 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/8Ω). ORDERING INFORMATION Device Package Operating Temperature S1A0427B01-D0B0 16−DlP−300A 20°C − +70°C 1 S1A0427B01 AM/FM 1 CHIP RADIO BLOCK DIAGRAM AM IF OUTPUT RF GND 4 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/FM DET AM F/E MIX OSC RF 5 6 AM OSC AM RF INPUT POWER AMP 7 8 9 10 11 12 RF AUDIO AUDIO RIPPLE AUDIO AUDIO BYPASS DET OUT POWER REJECTION GND POWER OUT ABSOLUTE MAXIMUM RATINGS (Ta = 25°C) Character istic Symbol Value Unit Supply Voltage VCC 13 V Power Dissipation PD 600 mW Supply Current ICC 44 mA Thermal Resistance Junction to Ambient REJA 100 °C/W Operating Temperature TOPR −20 − +70 °C Storage Temperature TSTG −55 − +150 °C 2 AM/FM 1 CHIP RADIO S1A0427B01 ELECTRICAL CHARACTERISTICS (Ta =25°C, VCC = 5.5V, fm = 1kHz, AM: f = 1MHz, 30% Mod, FM: f = 10.7MHz ∆f = 22.5kHz, unless otherwise specified) FM Characteristic Symbol Quiescent Circuit Current ICCQ Min. Typ. Max. Unit SW: FM, Vcc = 3V 7 12 17 SW: FM, Vcc = 9V 10 17 23 2.0 2.4 3.1 V mA Pin 16 Terminal Voltage V16(FM) SW: FM, Vcc = 9V, VI = 0 -3 dB Limiting Sensitivity VI(LIM) SW: FM, −3dB V16 = 2.4V, V R Min − 57 − dB SW: AM, ICC = 42mA 12 13.2 14.0 V SW: AM, VCC = 9V, VI = 0 1.4 − 1.9 V SW: AM, VCC = 12V VI = 37dBµ, RL = 8Ω 1.5 3.0 − V Internal Regulated Vtg. Pin 16 Voltage AM Test Conditions VCC V16 (AM) Maximum Sensitivity SMAX Signal to Noise Ratio S/N VI = 37.5dBµ, RL = 8Ω PO = 50mW 15 20 − dB Output Power PO f = 1kHz, THD = 10% VR Min, RL = 8Ω 0.28 − − W ICC = 42mA, RL = 45Ω f = 1kHz, VO = 2V VR Min − 0.5 4.0 % f = 1kHz, RL = 8Ω, PO = 50mW − 41 − dB PWR Total Harmonic AMP Distortion Voltage gain THD GV 3 S1A0427B01 AM/FM 1 CHIP RADIO TEST CIRCUIT V16 VCC T6 C18 470pF C17 C16 470µ F 0.047µ F 1 2 6 3 4 3 4 T4 R8 1.2kΩ 4 3 2 6 R8 4.7kΩ 1 1 C11 470µ F 6 RL T5 C15 10pF FM POWER OUTPUT 2 GND C13 470µ F SW C11 0.001µ F C12 220µ F AM 16 15 14 13 12 11 10 9 R6 22kΩ S1A0427B01 1 2 3 4 5 6 7 8 VR C10 0.022µ F 100kΩ 0.01µ F T2 4 C6 51pF 1 6 4 3 2 6 1 R3 50Ω 2 3 4 R5 (R = ) 8 3 C5 6 2 680pF 1 R2 10kΩ L2 L1 C8 50pF 2pF T3 4 C3 220pF R1 50Ω C7 0.047µ F 1 R4 50Ω 2 6 3 C4 0.022µ F C2 0.022µ F FM IF INPUT 4 C19 3.3µ F FM AM SW AM RF INPUT AUDIO AUDIO DET OUTPUT POWER INPUT AM/FM 1 CHIP RADIO S1A0427B01 APPLICATION INFORMATION — EXTERNAL COMPONENTS Part Number Influence Purpose Typical Greater Than Typ Low AM gain AGC Distortion increase, High gain 4.7kΩ Low detector output, stable IF gain, low FM gain Sharp IF AMP curve 470Ω Low FM gain High gain, but noise increase 0.022µF Should not be less than 0.005µF High IF Gain, S/N ratio degrade IF filter 0.022µF Removal may cause IF oscillation No influence C7 AM bypass 0.047µF Low gain Using over 1 will cause FM distortion at small signal C9 Detector filter 0.01µF Unstable IF AMP oscillation Poor FM frequency response C10 Audio coupling 0.022µF Lower sensitivity, poor low frequency response Bass boost affects de-emphasis curve C11 Audio Input Highcut 0.001µF Audio oscillation Poor response C12 Ripple filter 220µF Poor frequency response & Low gain Improve AC Hum C13 Audio output coupling 470µF Poor low frequency response Can achieve optimum output power C14 Power line filter 470µF Poor AC Hum Improve AC Hum C15 FM detector phase-shift 10pF Narrow IF bandwidth Wide IF bandwidth C16 High freq. (IF) bypass 0.047µF Removal will cause fm oscillation No influence C17 AN AGC time constant and high frequency (IF) bypass 0.047µF Charging not recommended R5 Am gain Control R7 FM detector damper R8 FM gain adjust C2 IF bypass C4 47kΩ (33K − ∞ ) Smaller Than Typ − 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) = 47kΩ Pin 16 resistance (FM) = 1.2kΩ (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 33kΩ to infinity. FM gain can be adjusted by the loading resistor value of Pin 16 (FM) from 3kΩ to 680. Recommended resistance (Pin 8, Pin 16). Pin 8 (AM) = 47kΩ Pin 16 (FM) = 470kΩ 6 AM/FM 1 CHIP RADIO S1A0427B01 APPLICATION CIRCUIT V CC T6 220 pF 1 2 6 3 4 3 4 220 µ F SP 100 µ F 0.1 µ F 4 3 4.7k Ω 2 6 1 6 10pF 2.2 Ω T5 GND ANT 2 1 T4 0.002 µ F 1000pF 100 µ F 330 µ F AM FM 100 µ F 22k Ω SW1B 1.5 pF 16 15 14 13 12 11 10 50k Ω VR 9 0.022 µ F L3 3.3k Ω 20pF S1A0427B01 0.01 µ F 15pF 1 2 3 4 5 6 7 8 *R * (180k Ω ) 680 Ω T2 2pF 1 4 3 2 L4 6 3 T1 L5 680 Ω 1 6 AM L2 SW1A 0.047 µ F 0.022 µ F 0.047 µ F GND 1k Ω 20pF 1000pF 2 4 220pF 1.8pF NOTES : 1. SW1 : AM Position. 2. * Marking : Value of C and R have to be selected for good conditions * (56k Ω ) 2.2 µ F 1 L1 6 820pF 5.1pF AM BAR ANT 4 FM 1 0.047 µ F 6 T3 2 3 220Ω 8.2pF 3 2 KSC 1674-0 *C AM OSC 4 1000pF 7 S1A0427B01 AM/FM 1 CHIP RADIO COIL SPECIFICATION 1 Coil No. f QO T1 10.7MHz 120 Turns 1-3 CO 8T Connections (KOREA TOKO) 3 150 pF 4 2 1 1-3 T2 T3 (T6) 10.7MHz 455kHz 70 min 80 min 11T 4-6 2T 1-2 91T 2-3 55T 4-6 6T 1-3 11T 6 3 75 ± 5 pF 4 2 1 6 3 180 ± 5 pF 4 2 1 6 3 T4 10.7MHz 45 min 82 ± 3 pF 4 2 1 1-3 T5 L1 L2 10.7MHz AM Local Oscillator AM ANT 25 min 90 min 200 7T 4-6 7T 1-3 86T 3 180 pF 8 1 6 3 4 2 4-6 7T 1-2 (L = 560µH ) 138T 3-4 9T 5T L3 FM ANT 0.8mmφ UEW TAP L4 Trap 0.32mmφ UEW 10T 0.8mmφ UEW 4T FM Oscillator 4 2 1 6 core: 10 mm φ X 55 mm 1 L5 6 2 GND V.C 3 Pin 6 5 mm 7 mm 0.5T 5 mm 7 mm − 5 mm 7 mm 4 GND AM/FM 1 CHIP RADIO S1A0427B01 Coil No. f Q0 T1 10.7MHz 120 Turns C.L. Connections (KWANG SUNG PART NO) 3 1-3 8T 150pF 2 1 KSI-FD5 1-3 11T 4 3 T2 10.7MHz 70min 75pF 4-6 2 2T 6 1 KSI-FA2 T3 (T6) 455kHz 1-2 91T 2-3 55T 80min 3 180pF 4-6 4 2 6 1 6T KSI-AA4 3 T4 10.7MHz 45min 1-3 11T 82pF 4 2 1 6 KSI-FD4 1-3 7T 4 3 T5 10.7MHz 45min 180pF 4-6 2 7T 6 1 KSI-FA4 1-3 L1 AM Local Oscillator 86T 3 90min 4-6 4 2 7T 6 1 KSI-AO4 L2 AM ANT 1-2 L = 560uH 138T 4-6 9T 200 core: 10 mm X 55 mm 1 V.C 2 GND 3 Pin 6 4 GND KSA-ANT560 9 S1A0427B01 Coil No. AM/FM 1 CHIP RADIO f Q0 Turns C.L. Connections (KWANG SUNG PART NO) 5T 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 L1 KSC 47pF 1674-0 47pF 22Ω 100kΩ 0.02µF 0.005µF 330Ω ANT 2.2kΩ L2 0.02µF 5pF L3 100kΩ 40pF 100µF 20pF 30pF 470Ω 470Ω 0.01µF 300pF 5pF 0.005µF 1N60 KSC 1674-0 100Ω AM FM 2.2kΩ L4 T1 0.02µF 0.01µF 2pF 220µF T2 T4 1 16 T5 2 15 0.01µF 680Ω 10pF 2.2kΩ 4.7kΩ 4.7kΩ T6 1kΩ T3 3 14 1kΩ T5 13 12 220µF 4 L6 6 11 0.04µF 140pF AM FM 5 S1A0427B01 0.04µF VCC 8 9 22kΩ 0.001µF L5 (AM BAR ANT) 7 10 100µF SP 470µF 0.04µF 0.01µF 47kΩ 0.02µF 50kΩ VR AM/FM 1 CHIP RADIO S1A0427B01 APPLICATION CIRCUIT 2 11 S1A0427B01 AM/FM 1 CHIP RADIO COIL SPECIFICATION 2 Coil No. f Q0 Turns 1-3 C.L. Connections 11 4 3 T1 10.7MHz 90 82pF 4-6 1-3 T2 T3 T4 10.7MHz 455kHz 10.7MHz 3 5 60 100 45 (Min) 390pF 4-6 2 1-2 127 2-3 28 4-6 10 1-3 11 180pF 82 pF 2 1 6 3 4 2 1 6 3 4 2 1 6 3 4 2 1 1-3 7 3 T5 T6 10.7MHz 455kHz 25 (Min) 4-6 7 1-2 50 100 180pF 390pF 2-3 50 1-3 100 4 2 1 6 3 4 2 1 6 3 L6 12 796kHz 100 4-6 6 10 360µH 4 2 1 6 AM/FM 1 CHIP RADIO Coil No. f S1A0427B01 Q0 Turns 1-3 C.L. Connections (KWANG SUNG PART NO) 4-6 4 3 T1 10.7MHz 90 82pF 11 2 3 6 1 KSI-FA3 1-3 4-6 4 3 T2 10.7MHz 60 390pF 5 2 2 6 1 KSI-FA5 T3 455kHz 1-2 127 2-3 28 3 180pF 100 4-6 4 2 1 10 6 KSI-AA3 3 T4 10.7MHz 45min 1-3 11 82pF 4 2 1 6 KSI-FD4 1-3 7 4 3 T5 10.7MHz 45min 180pF 4-6 7 2 6 1 KSI-FA4 1-2 50 3 T6 455kHz 100 2-3 50 390pF 4 2 1 6 KSI-AA2 1-3 100 3 L6 796kHz 100 4-6 10 360uH 4 2 1 6 KSI-A03 13 S1A0427B01 AM/FM 1 CHIP RADIO NOTES 14