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| Datasheet File OCR Text: |
| FM 1 CHIP RADIO S1A0429A01 INTRODUCTION 16-SOP-225 The S1A0429A01 is a monolithic integrated circuit designed for Portable FM radios. It consists of an RF input stage, mixer, IF, mute control and loop (earphone drive) Amp. It is suitable for a pocket-size radio. FUNCTIONS * RF input stage * Mixer * Mute control * Local OSC * IF Amp * Earphone drive amp FEATURES * * * * * Minimum number of external parts required Single trimmer tuning No FM det coil FLL IF detect system (76kHz) Operating voltage: VCC = 1.8V - 6.0V ORDERING INFORMATION Device S1A0429A01-S0B0 Package 16-SOP-225 Operating Temperature -10C - + 70C 1 S1A0429A01 FM 1 CHIP RADIO BLOCK DIAGRAM MPX 16 FILTER 15 MPX OUTPUT BYPASS RF IN IF FILTER 11 10 SINGLE STRENGTH AF 14 13 12 9 MPX FILTER + AF - RF AMP MIX MUTE CONTROL IF STAGE DEMODULATOR & CORRELATOR STAB OSC 1 DEMOD OUT 2 MUTE 3 GND 4 Vcc 5 TUNE 6 IF IN(-) 7 8 IF FILTER ABSOLUTE MAXIMUM RATINGS ( Ta = 25C ) Characteristic Supply Voltage Oscillator Voltage Operating Temperature Storage Temperature Thermal Resistance Junction to Ambient Symbol VCC VOSC TOPR TSTG REJA Value 7 -0.5 - + 0.5 -10 - + 70 -55 - + 150 300 Unit V V C C K/W 2 FM 1 CHIP RADIO S1A0429A01 ELECTRICAL CHARACTERISTICS MONO CONDITION: f = 98MHz, fm = 1kHz, f = 22.5kHz, V = 50dB, Ta = 25C, VCC = 3V Characteristic Quiescent Circuit Current Sensitivity Signal to Noise Ratio Total Harmonic Distortion MONO AM Rejection Ratio Oscillator Voltage AFC Range Mute Range Band Width AF Output Voltage Symbol ICCQ SVI1 SVI2 S/N1 THD1 THD2 AMR VOSC AFC MR BW VO1 VI = 0 -3dB: Mute Disable SIN = 26dB: Mute Enable - f = 22.5kHz f = 75kHz AM: fm = 1kHz, m = 80% FM: fm = 1kHz, f = 75kHz - - - VO = 3dB Pre-Emphasis t = 5kHz - Test Conditions Min. - - - - - - - - - - Typ. 6.3 12 17 60 0.7 2.3 50 250 160 120 10 90 Max. - - - - - - - - - - Unit mA dB dB dB % % dB mV kHz kHz kHz mV 3 S1A0429A01 FM 1 CHIP RADIO TEST CIRCUIT Field Strength S.G AF OUT PUT 75 4700pF 0.1 F 3300pF 220pF 220pF 8.2k 0.1 F 16 15 14 13 12 11 10 9 S1A0429A01 1 2 3 0.01 F 4 5 6 7 8 820pF 10k 0.1 F 0.01 F 56nH 0.1 F 1500pF VCC Figure 1. Test Circuit for Mono Operation 4 FM 1 CHIP RADIO S1A0429A01 Field Strength L (MONO.STEREO) STEREO DECODER R Vmux 680pF 2200pF S.G Rs = 75 1k 3300pF 0.1 F 220pF 220pF 3300pF 10k 0.1 F 16 15 14 13 12 11 10 9 S1A0429A01 1 2 3 0.01 F 0.01 F 0.1 F 56nH 0.1 F 1500pF 4 5 6 7 8 330pF VCC Figure 2. Test Circuit for Stereo Operation 5 S1A0429A01 FM 1 CHIP RADIO APPLICATION CIRCUIT AF OUTPUT FM ANT 10k 220pF 0.1 F 56pF 68pF 3300pF 1k 3300pF 8.2k 0.1 F 16 15 14 13 12 11 10 9 S1A0429A01 1 2 3 0.01 F 0.1 F 22pF 56nH 0.01 F 0.1 F 1500pF 4 5 6 7 8 820pF VCC 6 39pF |
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