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DIY Hobby projects, diagram, schematic

CXA1019 FM Radio Circuit Diagram

electronicecircuits, October 18, 2009August 19, 2023
sony cxa 1019s radio

CXA1019 FM RADIO Circuit

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
cxa1019s ic fm radio circuit diagram, cxa1019, cxa
PARTS LIST
R1100KΩ
R22.2KΩ
VR150KΩ Volume Control
D1Red Colour LED (Tuning Indicator)
C115pF
C24.7µF
C34pF
C40.02µF
C522pF
C620pF
C7100pF
C822pF
C90.01µF
C10220µF
C114.7µF
C1210µF
C131µF
C140.27µF
C151000pF
C16100µF
C170.1µF
C18100µF
FM T/CFM Tuning Capacitor (15-30pF)
IFOrange Colour FM IF Transformer
CF110.7 MHz FM Ceramic Filter
L12¾ (2.75) Turns of 22 swg enamelled copper wire close-wound on a 5mm diameter.
L23¾ (3.75) Turns of 22 swg enamelled copper wire close-wound on a 5mm diameter.
AerialTelescopic Aerial OR 100cm Circuit Wire
SP2W 8Ω Speaker
ICCXA1019 s
SONY CXA1019S
SONY CXA1019S
Block diagram
Block diagram

TUNING CAPACITOR

FM Tuning Capacitor with AMFM Tuning Capacitor (15pf-40pf) with AM
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.
FM Ceramic Filter 10.7 MHz
10.7 MHz Ceramic Filter

CXA1019 TUNING COILS

cxa 1019 fm radio tuning coil L1cxa 1019 fm radio tuning coil L2
2¾ (2.75) Turns of 22 swg enamelled copper wire close-wound on a 5mm diameter.3¾ (3.75) Turns of 22 swg enamelled copper wire close-wound on a 5mm diameter.

IF Transformer

Orange Colour  FM IF Transformer topIF Transformerfm radio if transformer 5 pin
1 and 3 pins used to  this circuit.

CXA1019 PCB

width=7.95 cm
Height=4.90 cm

Please send your ideas, those are very important for our success…

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Comments (19)

  1. seetharaman says:
    May 1, 2010 at 2:44 pm

    If somebody wants sony doc pl ref following site
    http://pdf1.alldatasheet.com/datasheet-pdf/view/115246/SONY/CXA1019AM.html

    Reply
  2. kensou,sei says:
    August 20, 2010 at 10:10 am

    it is ok just simple to adjust the design
    on the if it is copied

    Reply
  3. Nichole says:
    November 13, 2010 at 12:52 pm

    The Diagram So Very Nice !
    thanks ! ! !

    Reply
  4. ISHUZA says:
    March 3, 2011 at 10:12 pm

    I’m very interested with this design can I order the materials from your through western union money transfer and get them so that I may real experience it?
    please if ok let me know.

    Reply
  5. radio jock says:
    April 6, 2011 at 8:29 pm

    is there any specification for IF transformer ?? shopkeeper doesn’t understand ORANGE color….
    thanx..

    Reply
  6. Rajeen says:
    May 26, 2012 at 9:08 am

    If you can’t find out IF Transformer, replace 10.7 two pin ceramic filter. Audio output will increase and tuning part become easy. Good Luck !

    Reply
  7. Mina says:
    June 19, 2012 at 3:13 pm

    please if i need to suimulate this this circuit on orcad how could i find CXA1019s or FM Tuning Capacitor

    Reply
  8. Sreerag says:
    September 10, 2012 at 1:11 pm

    Nice presentation!
    Thanks.
    CXA1619BS is a powerful IC.
    please post am AM/MW reciever (only AM) diagram with bar antenna.

    Reply
  9. shimizudani says:
    September 13, 2012 at 11:42 pm

    nice diagram…

    can you provide also the am/fm radio circuit??

    Reply
  10. shimizudani says:
    September 14, 2012 at 12:54 am

    can i ask what is a simulator program that you used in trying this circuit… i try using the tinycad but i don’t
    see some items listed…

    Reply
  11. anonymous says:
    September 28, 2012 at 3:44 pm

    can i use red if transformer instead?what are other alternatives if orange if transformer is not available?

    Reply
  12. fatmaa amen says:
    May 5, 2013 at 4:33 am

    please i need the data sheet of cxa1019s whigh in the wirless alarm car circit which is

    Reply
  13. amith says:
    May 11, 2013 at 2:51 pm

    very good performance

    Reply
  14. Gobinathan says:
    October 20, 2013 at 12:22 pm

    Super presentation

    Reply
  15. Alisa says:
    October 26, 2013 at 7:26 pm

    Hello, can any one tell me plz, how to identify diodes?

    Reply
  16. n.saravanan says:
    October 30, 2013 at 5:38 pm

    hai i ask one doubt if cxa1619 is similar to cxa1019 please reply to me
    thanks and regards,
    N.saravanan

    Reply
  17. prabhakar tiwari says:
    November 22, 2013 at 1:28 pm

    good

    Reply
  18. deepak madhavi says:
    February 15, 2014 at 5:17 pm

    ic cax1619 pin 14 fm Receivercircuit diagram

    Reply
  19. Joe Perkins says:
    March 6, 2015 at 3:41 am

    The discriminator transformer is of the “quadrature” type. In this application it is the same as the Xicon 42IF124 (approximately 4.5uH in parallel with a 51PF capacitor. The ceramic discriminator (LT10.7) will give greater volume and reduce adjustments but at slightly higher distortion.

    Reply

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