CXA1019 FM Radio Circuit Diagram [PDF]

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CXA1019 FM Radio Circuit Diagram



CXA1019 FM RADIO CXA1019 is a one-chip FM/AM radio IC designed for radio-cassette tape recorders and headphone tape recorders, and CXA1019S has the following functions. CXA1019 Features   



Small number of peripheral components. Low current consumption (Vcc=3V) For FM: I0=5.3 mA (Typ.) Large output of AF amplifier. Vcc=6V, EIAJ output=500mW (Typ.) when load impedance 8Ω.



Functions FM section    



RF amplifier, Mixer and OSC (incorporating AFC variable capacitor). IF amplifier Quadrature detection Tuning LED driver



CXA1019 Structure 



Bipolar silicon monolithic IC



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PARTS LIST R1 100KΩ R2 2.2KΩ VR1 50KΩ Volume Control D1 Red Colour LED (Tuning Indicator) C1 15Pf C2 4.7µF C3 4pF C4 0.02µF C5 22pF C6 20pF C7 100pF C8 22pF C9 0.01µF C10 220µF C11 4.7µF C12 10µF C13 1µF C14 0.27µF C15 1000pF C16 100µF



http://www.electronicecircuits.com/electronic-circuits/cxa1019-fm-radio-circuitdiagram C17 C18 FM T/C IF CF1



0.1µF 100µF FM Tuning Capacitor (15-30pF)



Orange Colour FM IF Transformer 10.7 MHz FM Ceramic Filter 2¾ (2.75) Turns of 22 swg enamelled copper L1 wire close-wound on a 5mm diameter. 3¾ (3.75) Turns of 22 swg enamelled copper L2 wire close-wound on a 5mm diameter. Aerial Telescopic Aerial OR 100cm Circuit Wire SP 2W 8Ω Speaker IC CXA1019 s



SONY CXA1019S



http://www.electronicecircuits.com/electronic-circuits/cxa1019-fm-radio-circuitdiagram Block diagram



TUNING CAPACITOR



In this circuit diagram we have mention about FM tuning side only.When we assemble the Tuning Capacitor, we must be careful to select correct  side of  tuning capacitor.Normally in the FM side of the tuner middle pin and other  pin capacitance will be nearly 15pF  to 40pF. Middle pins: B and F, FM side:A,B, C  in this photo.



10.7 MHz Ceramic Filter



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CXA1019 TUNING COILS



2¾ (2.75) Turns of 22 swg enamelled copper 3¾ (3.75) Turns of 22 swg enamelled copper wire close-wound on a 5mm diameter. wire close-wound on a 5mm diameter.



IF Transformer



1 and 3 pins used to  this circuit.   CXA1019 PCB



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width=7.95 cm Height=4.90 cm width