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  • TDA integrated circuits series are very well apreciated and used in amplifier designs and projects. TDA audio amplifier circuits are produced in generally by Philips and SGS-THOMSON. The most used ICs are TDA2030 and TDA2003 for small audio amplifiers kits and TDA7294 for higher power amplifiers.
    In this article we present some representative amplifiers schematics with TDA circuits: car and home audio amplifiers with datasheets below every circuit diagram.

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    TDA2003 amplifier circuits

    TDA2003 is a cheap amplifier that is designed to run on single rail power supplies (unipolar). It provides a high output current capability (up to 3.5A), very low harmonic and cross-over distortion.

    TDA2003 10W car radio audio amplifier
    tda2003 amplifier

    TDA2003 bridge 18W amplifier

    TDA2003 can be used as an BCL (bridge amplifier) and car deliver up to 18W.
    tda2003 bridge bcl

    TDA2005 amplifier circuits

    TDA2005 is a class B dual audio power amplifier specifically designed for car radio applications. Its high current capability (up to 3.5 A) and the ability to drive very low impedance loads (down to 1.6 ohms) makes this circuit a good choice for cheap power booster amplifiers.

    TDA2005 stereo amplifier 2x10W
    tda2005 stereo

    TDA2005 bridge amplifier 20W
    tda2005 bridge

    TDA2030 amplifier circuits

    TDA2030 is a monolithic integrated circuit in Pentawatt package, intended for use as a low frequency class AB amplifier. Typically it provides 14W output power (d = 0.5%) at 14V/4Ω at ± 14V or 28V, the guaranteed output power is 12W on a 4Ω load and 8W on a 8Ω

    TDA2030 amplifier circuit 20W
    tda2030 diagram

    TDA2030 PCB layout
    tda2030 cab
    tda2030 pcb

    TDA2030 Assembly
    tda2030 assembly

    TDA2030 Bridge amplifier 35W
    tda2030 bridge

    TDA2050 amplifier circuits

    TDA 2050 is a monolithic integrated circuit in Pentawatt package, intended for use as an audio class AB audio amplifier. Thanks to its high power capability the TDA2050 is able to provide up to 35W true rms power into 4 ohm load @ THD = 10%, VS = ±18V, f = 1KHz and up to 32W into 8ohm load@ THD = 10%, VS = ±22V, f = 1KHz. Moreover, the TDA 2050 delivers typically 50W music power into 4 ohm load over 1 sec at VS= 22.5V, f = 1KHz.

    TDA2050 amplifier 35W

    tda2050

    tda2050 datasheet

    TDA7294 amplifier circuits

    TDA7294 is a monolithic integrated circuit in Multiwatt15 package, with high output power (up to 100W) intended for use as audio class AB amplifier in Hi-Fi field applications (Home Stereo, self powered loudspeakers, Topclass TV). Thanks to the wide voltage range and to the high out current capability it is able to supply the highest power into both 4W and 8W loads even in presence of poor supply regulation, with high Supply Voltage Rejection.

    TDA7294 amplifier 100W
    tda7294 amp

    TDA7294 PCB layout
    tda7294-cab
    tda7294-pcb

    TDA7294 Assembly
    tda7294-asm

    TDA7294 bridge amplifier 250W
    tda7294 bridge

    
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    64 Responses to "TDA Amplifier Circuits"

    1. Chaitanya Bhandari says: on March 10, 2009 at 5:26 am

      Thank you very much. I get some audio amplifier circuits from ur site which r useful for my project.

    2. sarsail porc says: on October 30, 2009 at 9:36 am

      nubagabaga sarsail

    3. minh thay cac mach tren rat don gian nhung khong biet chat luong am thanh cua no ra lam sao nua co duoc hay khong

    4. TDA Amp is a good choice for low cost. And High Quality Amp.

    5. Tutu Zulu says: on April 29, 2011 at 12:47 pm

      I like the perfomance of TDA 7384. Its the best!

    6. MASESE JOHN says: on May 2, 2011 at 11:14 am

      Tda 2003 is the simplest amp. to make in fact it was my first amp to try. Next let me try Tda 7294 and I will keep you informed of the results.

      • Ok, thanks for your feedback. I think TDA2003 is a good starting point for every hobbyist. I have seen an amplifier made with TDA7294 and the most import thing was the power source. It must deliver high power and have a very good filter.

      • eric francia says: on June 4, 2014 at 6:09 pm

        hi can you help me what is the csuitable power supply for TDA 7294

        thanks

    7. vukasin vasiljevic says: on May 9, 2011 at 10:51 pm

      i have made a lot of amplifiers,not only TDAs…But i made one with bridged TDA7294 and i have problem with that st-by\mute function…How does it works?

    8. masese john says: on May 24, 2011 at 8:20 am

      surely tda7294′s mute/st by function is alittle bit confusing.am also intrested inRF transmission and reception especially in the UHF and MIcropwave range.could someone out there pliz help especially in circuits using transistors.

    9. MALCOLM says: on June 8, 2011 at 4:52 pm

      I HAVE INHERITED HUNDREDS OF TDA ICS FROM TDA440 UP TO TDA9503 AND SOME TEA’S AS WELL. ANY IDEA WHERE I CAN FIND OUT DATA FOR THESE? I DONT KNOW WHAT THEY DO SO WAS DELIGHTED TO AT LEAST IDENTIFY THE AUDIO AMPS FROM YOUR WEB SITE. WILL BE BUILDING ASAP.

      • johny radio Johny Radio says: on June 16, 2012 at 10:26 am

        Hi Malcolm, have you found a use for your tda chips? If not, would you like to donate them to a non-profit organization? We teach electronics to poor teenagers, by helping them build amplifiers. Check my website bvhpradio.org/boom. Cheers!

    10. I’ Have made the amplifier with TDA2003 in most case and works, but its very amplified in Bass and Treble

    11. Ankit Garg says: on June 29, 2011 at 10:16 pm

      tda7294 is giving very low output. Iam using 24v 2amp DC adapter.

      • For better output results you must use a 35v 4amp adapter because as the ic gives more than 100w output so as the input voltage.and amp also increases for giving better output results.

    12. hi guyz im planning to build TDA7294 can you give me the exact size of pdf,

    13. hi;
      TDA Amp is Very very Good amplifier and high Quality Amp ;)

    14. TDA is great!!!!

    15. This web site doesn’t show up correctly on my droid you may wanna attempt and repair that

      • is headphone/pc/mobile output is directly connected to tda 7249 input,
        power supply= 40v & how much ampere`s, or how much transformer output, & ac to dc converting circuit.

        stereo to 5.1 channel converter,other than NJW1186,
        and where to get remote control circuit, cent, sub, rear, l&r vol control

    16. what is full form of tda actually

    17. do you have a pcb layout of tda2005 2×10?

    18. i made TDA 2003 bridge amp acordind to this schematic, and it didn’t work, is thare something wrong whit that?

    19. I assmbled TDA2050 for my 5.1 system and it works great. Thanks man!!!

    20. já montei vários circuitos que encontrei na internet, mas muitos não deram certo. os resistores não casavam bem com os circuito integrado que eles pediam.

    21. TDA–>best choice for simple & cheap ampplifier.

    22. on the TDA7294. Im confused with the Standby/mute. Is there a way i can completely remove this from the circuit? I have seen TDA7294 plans that remove pins number 5 , 10 and 11 (snapped off) with the standy was connected to the ground (from what i could tell) Would that work? I do not need these functions. PS: THANKS FOR THE PLANS =)

    23. sir iam using tda7294 bridge amp circuit output is very good but input supply voltage range? Iam using 30-0-30v 5A transformer but IC very heat at the time output very very low please help me sir

    24. input supply voltage range in tda7294 bridge amp circuit

    25. After fighting some time with a 50W RMS amplifier, self-designed with TIP122 and TIP127 at the output stage, I decide then to implement an integrated cirtuit option. I chose the TDA2002 (similar to TDA2003) on bridge configuration. Feeding it with +21 volts and a 4 ohms load, can obtain over 30 W RMS at the output with good stability. An interesant option for domestic use.

    26. Somanshu Mehta says: on May 7, 2012 at 10:17 am

      TDA best choice for simple & cheap amplifier at home.

      THANKSZ

    27. chanderjeet says: on May 30, 2012 at 5:56 pm

      Which type of capacitors are used in tda 2003 bridge amplifier 18watts

    28. I think here some TDA boards are missing out I think TDA had a60 watt Amp board

    29. Sir,

      I want build a 200 watt subwoofer amp with TDA 7294 IC. Please sned me the circuit diagram with pcb lay out. Hoping with better response.

      Thanks,

      Punam Pradhan

      • Dipak Pakhale says: on July 16, 2014 at 8:30 pm

        What are you doing with layout? I’m also going to build amplifier with tda 7294. But whats abt your experience with its pmpo quality? Can I produce higher PMPO audio?

    30. Hi all,

      I need DATA sheet of Ic TDA15520.

      I hope to get it as early,
      Thanks,
      Regards,
      Ebenezer.

    31. sir , i want a 12inch speaker operate amplifire , (alpine ,sony any company amp) not use this amp. i use desi type like local made amp. 9872076247

    32. N.Muthukrishnan says: on July 20, 2013 at 2:02 pm

      Respected sir,
      i tried tda 7294 circuit it is very nice and good but it is working in dual power supply. Is it possible to use in dc 24 volt single supply any idea ply reply me via krishna198023@gmail.com
      thanking you
      N.Muthukrishnan

    33. rohit kumar says: on September 16, 2013 at 9:11 am

      i made ckt with TDA794 same as given in the ckt and one of my ic blown off. what was the reason behind this? can anyone help me

      • maybe your speakers there is short on your speakers or your posivetive out let speakers on your ic there is a short

    34. Dear Rohit Kumar, you might have connected one output lead to ground !!!

    35. problem with7294 no sound help me guy ……thanks

    36. i have a problem with TDA2003 producing disorted sound later himming sound

    37. I have a question for the TDA7294, (capacitor): What is the voltage of the electrical circuit capacitors that needed to run the amp ?

    38. Well, I have used the TDA7294 in the bridge configuration to drive a 200Watt Subwoofer Driver (Speaker). The subwoofer driver (speaker) is of American Make manufactured by BOSTON. I have used a very well regulated power supply of +/- 33VDC @ 8 Amps (Transformer rating: +/-24V AC @ 8Amps). During power up, there is no Pop & Click noise, sound generated is decent when the volume control is adjusted to about half of the traversing area of the potentiometer (100K Ohm). But on higher volume, the IC to which the signal is fed, burns out. I have literally burnt three of these ICs trying to figure out the problem, but still unresolved. I think that the current supplied is too high for the IC to handle. Users can use transformers of +/-24 V AC @ 5 Amps, without hassle. But I can guarantee, that if people use a 100 Watt Subwoofer driver (Speaker) and drive the signal to the max volume, these ICs wil be able to handle the load. Please be cautious not to exceed the voltage limit beyond +/- 35 V DC, as it will prematurely damage the ICs.

      • r de vreede says: on September 15, 2014 at 10:57 am

        You need bootstap bjt. Since you can’t cool the unit when you use high power : <1k/w, impossible to cool, but did you have a thermal shutdown unit(s) used?….. zThese are all the very basic schematics you can make on this page, but the ic gives perfect sound till 50 Watts, that's it….. and then you need bootstrap transistors or fets(less ) Which use a higher votage and can be used as votage stabilzer and after that a power bridge and then you can achieve 150 watts rms. Don't forget that this ic ain't newbie……

    39. مهرداد says: on March 23, 2014 at 10:21 pm

      ، مدار ها عالی هستند
      من چند تا را ساختم، کیفیت صدا عالیه
      ممنون :)

    40. Neil Bryan Daculan says: on May 25, 2014 at 3:27 pm

      TDA is the One of favorite circuits……

    41. Hello, how do you make the calculus for choosing the resitances and capacitors for the tda 7294 circuit?

    42. paul obwaya says: on July 2, 2014 at 3:23 pm

      of cause i have to do a lot of research in order to finalize my work with out any error and so could not tell you by now

    43. Stamcaar says: on July 22, 2014 at 9:10 pm

      I made TDA7294 amplifier. I used your PCB. So can anyone tell me why have my speaker sound like there is short circuit? I used transformer 2x24v/100VA, so there is voltage 22v-0v-22v. If I understand true, there is +-44V, so maybe the transformer is problem or what?
      Best regards.

    44. stamcar says: on July 23, 2014 at 2:10 pm

      circuit of TDA7294 doesnt work :)

    45. Is true that this TDA7294 works?

    46. stamcar says: on July 27, 2014 at 7:10 pm

      It doesnt

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