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  • 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 100W audio amplifier

    tda7294 amp

    TDA7294 PCB layout


    TDA7294 Assembly


    TDA7294 250W bridged amplifier

    tda7294 bridged

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    13 Responses to "TDA7294 Audio Amplifier Circuits"

    1. Boy will the younger guys be able to use “loose transistors” on a TAGSTRIP ? Like we more seniors built our amps when we were learning the trade? Remember bending a chassis with a garden fork as a brake? Huge power? 10(ten) watts with OC 35 transistors and those thermionic tubes (valves)? The first power i.c. the Sinclair IC10?

    2. Chiliman says: on July 29, 2013 at 11:19 pm

      What should I do with standby?

    3. Hi guys, I did the 100watt TDA7294 it sounds so great, I want to try the TDA7294 250watts bridged amp, so how can I get the PCB layout. Thanks in advance.

    4. It works!

    5. where should the standby pin connected????

    6. is it work on car battery or plz provide 250watts bridged amp PCB layout plz plz i am just intrusted in sound system it is my hobby or plz provide some more circuit 60 watt or 80 watt output work with car battery

      • krokkenoster says: on April 30, 2014 at 3:46 pm

        Preet hi! The highest power that a car battery amplifier can give is about 20 watts depending on conditions like battery charge and so on. To get all the power you will have to use an inverter that boost the voltage to what you need

      • r de vreede says: on September 15, 2014 at 10:34 am

        read a book and learn math, otherwise you’ll never understand what’s happening and i have a phd micro-electronics. This is as easy as you can make it, dont excpect supersounds. And for 60 watts this is a perfect one. But don’t copy the values , or use programs for it. Those are for controlling you calculations. I recommemned first to read a lot about bootstrapping, since it’s often used and then the ic delivers the best sound , you’ll need an extra torrodial transformers, while standing once made for audio are better, but hobby or not, the capacitors don’t come cheap and the best value for the money are the nichicon kg or elna, no fc’s since they are less and fake once are 40%. buy a lcr metre and a well built ‘normal’ metre and you’ll come far. Making the pcb is easy, but it’s more important you understand what everything in a schematic. And if you do, buy the pcb. and you allways can add parts. on a euroboard next to it. gr richard

    7. r de vreede says: on September 15, 2014 at 9:59 am

      It’s a nice ic , but it needs a bootstrap with 5200 annd 1492 and offcourse and offcourse a stage when it’s supposed to work as subamp, an electronic crossover. , which can bevdone by some opamps. I would built in a couples of thermal circuitbreakers, cause this one gets hotttttt. , so use two vents and high grade components…… for everything, since you ask a lot from your components and to be honoust;This schematic
      will only work with not to high rms subs or speakers and buy nice once. Not 250 watts , take a look at the tda pdf. 100 watt is way too much from the unit and read about bootstraps. Building this thing certainly ain’t gonna be cheap, since the powersupplies you need , just are expensive……

    8. spremkumar says: on October 31, 2014 at 4:52 pm

      I want best subwoofer pre

    9. ARISTIDES MUÑOZ says: on April 15, 2015 at 5:44 am

      Pleade explain me the folowing question

      I saw de cicuit with TDA 7294, this is stereo with opnly one speaker?

      • Aristides hi Something fishy here for stereo you need two for the meaning of the word is TWO I repaired some car radio’s and all they did was to connect two loudspeakers internally to the same output capacitor. To do stereo you will need two damn fast switchers that switch between the two speakers. My wife bought a dirt cheap radio “stereo”with one speaker and that is a lie the headphone socket just connect the two sides in parallel!

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