November 22, 2018


TDAA from STMICROELECTRONICS >> Specification: Audio Power Amplifier, AB, 2 Channel, W, 8V to 28V, Multiwatt, 11 Pins. Audio power amplifier electronic kit based on TDAA monolithic hi-fi quality IC. Dual class AB outputs, designed for high quality stereo applications. TDAA NTE Equvilent NTE IC – DUAL 10W STEREO AMP VCC = 24V TYPICAL LEAD SIP. NTE Data Sheet Data Sheet. NTE.

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I don’t want to blow up my speakers. As I increase the voltage, the ticking goes louder. Home Questions Tags Users Unanswered. When I connect it, it still does that yda2009a sound and the music is quite distorted. Some larger seller has a large stock of them. They probably haven’t been produced in the last 15 years, really.

TDA2009A 10 Watt Stereo Amplifier

You can often get them for free as samples, or for little money at online retailers. It’s nice that you know your seller personally, but he’s selling you ICs that are marked as “obsolete” at digikey, mouser and other larger retailers, and that the original manufacturer ST doesn’t even list anymore. St doesn’t even list then on their products page. Dj Sushi 18 5.

TDAA NTE Equivalent NTE IC – DUAL 10W STEREO – Wholesale Electronics

I’ve actually requested the IC from my seller, because I thought that it is some kind of good quality for a low price, as I’m quite a beginner in electronics. It might sound like you hit the “loudness” button on an 70’s stereo. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.


One more thing I forgot to mention: Go to the website of the former manufacturer of the TDAA it’s http: They are really brand new. That is bad style. It’s a 30W 5A power supply.

Or combine any of these measures – especially since the tdaa has been declared obsolete by the last major manufacturer ST for a while now, it’s very likely you’ll find better amplifier ICs. He probably has a stock or an extremely cheap source of obsolete parts and is trying to make money with inferior products.

When I connect both speakers to one channel, even at bigger volumes, it goes just fine.

But when I connect another speaker the same as the first one to the other output either right or leftone of the speakers starts a weird ticking noise on the bass speaker. You’re probably just overloading your power supply with two speakers.

TDA2009A 10+10W Stereo Audio Amp

I’m still recommending a not-as-obsolete amplifier ICs. You can either get a stronger source of power more Ampere! There’s literally thousands out there which aren’t as terrible. Increase the voltage to at least 10V. Try the usual retailers – mouser, digikey, element14, adafruit Anyway, is it a good idea to find an AB amp on www.

The datasheet looks like it’s from the mids, at the very least. When I bump it up to about 4V, the sound it totally distorted. It doesn’t have any undervoltage detection, so it’s no surprise that. Is there any way to stop the weird ticking?


Well, thank you for your advanced answer, I really appreciate it. The chip needs something between 8 and 28 V to work properly. Don’t just buy anything your local seller tda209a. Sign up using Email and Password. EBay from China is always a bad idea. Sign up or log in Sign up using Google. I’ve built this according to the td2009a provided in the images, but I’ve changed the capacitor connected to VCC and GND at pin 9 of the IC to uF and uF with no change I’ve done this because of my lack of capacitors at home.

By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. By using our site, tda2009z acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

And I specifically mentioned Ampere so that you don’t increase the volts It’s running about 0. Yeah, then you reduce the load ttda2009a, and thus, the voltages that the transistors can supply get lower, and your sound gets compressed to a smaller voltage range.

So you’re simply operating out of the specifications of that IC.

If I connect a speaker 8 ohm, about 10W to the right input or the left input, the sound is just great.