1、AM/FM 1 CHIP RADIO S1A0426C021INTROCUCTIONThe S1A0426C02 is a monolithic integrated circuit designed for radio cassette tape recorders, clock radios and headphone radios.FUNCTIONSFEATURES Built-in AM/FM Switching Circuit Wide operating supply voltage: V CC = 2V 8.5V Low current consumption (V CC = 3
2、V) FM: I CCQ = 5.3 mA (Typ) AM: I CCQ = 3.4 mA (Typ) High Power Audio Amplifier: 0.5W (typ) at V CC = 6V, RL = 8 , THD = 10% ORDERING INFORMATION AM/FM RF AMP Local OSC AM AGO Control FM AFO Control Audio Power AMP Tuning Indicator DC Volume AM/FM IF AMP FM Quadrature DET AM DET AUDIO MUTEDevice Pac
3、kage Operating TemperatureS1A0426C02-A0B0 30 SDIP 400 20 C +70 CS1A0426C02-S0B0 28 SOP 375 20 C +70 C30 SDIP 40028 SOP 375S1A0426C02 AM/FM 1 CHIP RADIO2BLOCK DIAGRAMABSOLUTE MAXIMUM RATINGS (T a = 25 C)Characteristic Symbol Value UnitSupply Voltage V CC 9 VPower Dissipation P D 1000 mWOperating Temp
4、erature T OPR 20 +70 CStorage Temperature T STG 40 +125 CMUTE FMDiscNF VOL AMOSCAFC FMOSCREGOUTFMRFAMRFINN.C FM RFINRFGNDFM/AMIF OUTGNDAMOUT VCC AF INAFCAGCAFCAGCIFGNDTUNINGMETERFMIF INAMIF INBANDSELECTRippleFilterDETOUT N.C30 29 28 27 26 25 24 23 22 21 20 19 18 17 161 2 3 4 5 6 7 8 9 10 11 12 13 14
5、 15(28) (27) (26) (25) (24) (23) (22) (21) (20) (19) (19) (17) (16) (15)PWRVOL FM/AM IF DET/AGCAM F/EFM F/ETuningMeter(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14)NOTE: ( ) 28-SOP PackageAM/FM 1 CHIP RADIO S1A0426C023ELECTRICAL CHARACTERISTICS(V CC = 6 V, Ta = 25 C , FM; f = 22.5 kHz,
6、 fm = 1 kHz, AM; 30% Mod, unless otherwise specified)Characteristic Symbol Test Conditions Min. Typ. Max. UnitFMQuiescent Circuit Current I CCQ (1) V I = 0 7.0 14.0 mAF/E Voltage Gain G V (1) V I (1) = 40dB , fc = 100MHz, f = 0 32 39 46 dB Detect Output Gain V O (1) V I (3) = 90dB , fi = 10.7MHz 26
7、20 14 dBmIF-3 dB Sensitivity V I (LIM) Vo(VI3) = 90dB , 3dB, fi = 10.7MHz 24 32 dBTotal Harmonic Distortion THD 1 V I (3) = 90dB , fi = 10.7MHz ( f = 75kHz) 0.3 2.0 %Meter Drive Current I M (1) V I (3) = 60dB , fi = 10.7MHz 1.8 3.5 7.0 mAAMQuiescent Circuit Current I CCQ (2) V I = 0 3.5 10.0 mAF/E V
8、oltage Gain G V (2) V I (2) = 60dB , fc = 1660kHz, m = 0% 15 22 29 dBIF Voltage Gain G V (3) Vo(3) = 34dBm, fi = 455kHz 14 20 27 dB AM Detect Output Voltage V O (2) V I (3) = 85dB , fi = 455kHz 26 20 14 dBmTotal Harmonic Distortion THD 2 V I (2) = 95dB , fc = 1660kHz, Vcc = 7.8V 0.6 2.0 %Meter Drive
9、 Current I M (2) V I (3) = 85dB , fi = 455kHz 1.3 3.0 7.0 mAAFClosed Loop Voltage Gain G V (4) Vo(4) = 0dBm, f = 1kHz 27 31.5 36 dBTotal Harmonic Distortion THD 3 Po = 50mW, f = 1kHz 0.3 2.5 %Output Power P O R L = 8 , THD = 10%, f = 1kHz 0.4 0.5 WMute Level M L Po = mW, Vi(4) = 30dBm1kHz, V1(3) = F
10、F 8 15 22 dBS1A0426C02 AM/FM 1 CHIP RADIO4APPLICATION CIRCUIT0.47F6pFBPFANT1508.2k50k4.7F*10.7MHz100k1pF22pF18pF2pFL1L2L3L410F0.01 F220F0.1F470F10F0.022F10F4.7F10F0.1F1kD1S1BAT T10.7MHz 455kHz330T12.2k100pF0.01FAM FMS2VRS1A0426C02123472423222185626252827910131411121916181720153029C-F C-F* CDA 10.7MG 89-A (MURATA)(28)(27)(26)(25)(24)(23)(22)(21)(20)(19)(18)(17)(16)(15)(1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)0.1FNOTE:( ) 28-SOP Package
