Many electronics circuits and projects for learning in simple ways.

TDA2822 stereo amplifier circuit with pcb & datasheet

This is small stereo power amplifier circuit. By use integrated circuit number TDA2822 within be model Dual Amp give power watt at 1W + 1W bandwidth expansion rates at 40dB 120kHz use power supply since 1.8V to 15volt and use current 6mA feed power supply 9volt reach the circuit C7 will perform filter fire level smoothly then go to feed power supply give with IC1 at 2 input signal pin will on the left and right that come in to change VR1 and VR2 for fine decrease popularity level has of the sound already coupling change C1 and C2 from that time pass by reach input of IC1 at 7, 8, 6 pin and 5 respectively from that time a signal had that to enlarged then go out 1 pin way.

TDA2822 stereo amplifier circuit with pcb & datasheet

Which be output of the channel a signal on the left and pin 3 ways are output of the channel on the right by a signal output of left channel and right channel will change C3 and C4 signal coupling reach a loudspeaker. By have R1, C5 and R2 C6 perform eradicate the noise of each the channel goes out.

When using the power supply 9 volt into this circuit.VR1 and VR2 to adjust the signal level of the right and left, the pin 7 and pin 6 of IC1.The amplifier IC1 is out of the output pin 1 and pin 3, through the C4 and C5 coupling signals to the left and right speakers.The C6, R1 and C7, R2 is to reduce noise.

How to build this projects
This projects is simple stereo amplifier in small size PCB see in Figure 2 and you can put all parts in components layout.
Figure 2 the PCB layout and the components layput of stereo small amplifier using TDA2822

The detail components.
IC1___________TDA2822_____DUAL POWER AMPLIFIER
C1,C2_________10uF 25V____Electrolytic capacitors
C3____________100uF 25V___Electrolytic capacitors
C4,C5_________470uF 25V___Electrolytic capacitors
C6,C7_________0.1uF 63V___Polyester capacitors
B1____________3V to 9V battery
Speaker 8 ohms

My friend ask me how to connects the potentiometer to this project.
Please look at Figure 3


TDA2822 datasheet-Dual power amplifiers

This is datasheet of TDA2822 as a dual power amplifiers in in portable radio on DIP 16pin. We can use as stereo configuration and Mono (Bridge audio amplifier).

It has clearly features as follows:
– The supply voltage down to 3V can use with AA 3V battery.
– Wide supply range 3V-16V
– Up to 2W + 2W output power(highly popular).
– Low crossover distortion
– Low quiescent current.

Pin connection (top view)

The typical application circuit (stereo)

PCB layout and components layout of the circuit above.



The typical application circuits (Bridge at 4 watts output)

This Post Has 28 Comments

  1. Dear Sir,

    We are interested in assembling car stereo cabinet with usb/mmc, Please send us the circuit diagram, with product cataloger and the cost and also send us your different range of products.

    With Regards,

  2. you wrote in components that speakers 8 ohms ,
    is this 8ohm the combined impedence of both speakers or 4 ohm each ?

  3. Hi, Han.

    Thanks for your comment.

  4. gracias por el aporte me puedes decir cuales son las medidas del pcb por fa

  5. thanks for the contribution What can you tell me the dimensions pcb son by fa

  6. it can give brass bosst

  7. Thanks.

  8. your scentences are too long and don’t make any sense.
    you need to improve your grammar.

  9. this circuit is so nice and i’m thankin’ for designers,thx alot.

  10. Hi, someone
    Thanks for your feedback.
    Yes, my English is poor.
    If your projects finished please share me.

  11. Hi, hirwa juldas
    Thanks for your feedback.

  12. please sir some doubt in your project : in circuit R1 4.7 but in your parts list is not included this item, what item this pleas explain me please and what is input output?

  13. Hi,Sir How to produce negitive voltage(-12v)
    with out using ic

    if in case we can use ic wich no of ic can be use

  14. thanks may God increase your knowledge

  15. very gooooooooooooooooooooooooooood

  16. Dear sir,
    How to insert the microphone in this circuit

  17. where is the ground source signal and ground circuit?

  18. thank you for giving me a new idea…

  19. I don’t understand anything you wrote. The grammar is terrible but thanks for the circuit. Can someone properly explain how this all works?

  20. please can someone tell me what the sound quality is like

  21. I made it and its works well but i change the C Out filter value to 33nF and its still works well!
    btw thanks for PCB Layout

  22. Where is the potensio??

  23. El circuito no se corresponde con los componentes, pones 2 condensadores de 0,1 y en el pcb solamente hay sitio para uno, pones condensadores 470 25V y en el circuito son de 16V, si vas a subir algo , nadie te obliga pero si lo haces,hazlo bien, porque hay gente que cree que puedo montarlo y luego se encuentra que falta información o está mal puesta.

    The circuit does not correspond to the components , put 2 capacitors 0.1 and the pcb there is only room for one , put capacitors 470 25V and 16V circuit are , if you go to upload something , nobody forces you but if you you do , do it well , because people think I can mount it and then that information is missing or misplaced .

  24. it is good.

  25. Work whit small sound quality

  26. Sir, on the top schematic the ic tda2822 have 8 pin, but there on the second diagram it have 16 pin.
    can you tell me the difference between there! Please email me!

  27. please help me ,i want to design a 50 watts power audio amplifier using TDA2025 IC,I NEED THE CIRCUIT

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