1W BTL Mono amplifier electronic kit using a TDA IC. Designed for battery- fed portable audio applications. Type, Through Hole. Operating Temperature, -. Supplier Device Package, 8- DIP. Package / Case, 8-DIP (“, mm). Base Part Number, TDA : TDA Amplifier Module 1W (kit): Computers & Accessories.

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Sound cards have a low impedance output, so 10k log will be fine. The speaker is quiet much more than in the radio I got the amplifier and speaker form and from time to time it seems as if the amplifier is clipping I’m not sure if that’s the right word. It sounds like you have tdaa7052 perfectly good amplifier that is just missing a heat sink.

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amplifier – Unexpected results with TDA – Electrical Engineering Stack Exchange

Here is my circuit: The specialty of the TDA is that you don’t have one output for a load based at GND but two complementary outputs with the load between the outputs. Adding a capacitor just makes it an AC short. I’ll try with a PCB and a nF capacitor next. First problem is that the amplifier won’t work on voltages above 3. My problem is that I’m observing a large DC offset at the audio output, and the IC is getting very hot. What did you do with both outputs the circuit diagram doesn’t show?

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The potentiometer fixed the problems with power supply voltage. I’m feeding in 12Vdc and the amp is drawing around mA, which makes for 1. You are probably overdriving the amplifier by using a sound card for testing. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

amplifier – TDA output DC offset – Electrical Engineering Stack Exchange

Sign up or log in Sign up using Google. Guill 2, 4 5. The minimal voltage listed in the datasheet is 3 V, typical is 6 V and maximum is 18 V, so this looks a bit strange. Why are you using a 50 ohm speaker?

Try a few mV input. Here’s the effect of increasing volume on a sine wave: The gain is set to 20dB with pin 4 being driven at 1Vdc. It appears that the DC offset of the outputs are not “cancelling out” and that’s why the chip is getting excessively hot. 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.

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By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. It’s a high-gain amplifier and might be oscillating if you built the circuit on a breadboard. So, the input is being driven with a signal generator with the parameters displayed.

Try putting a pot on the input, as a volume control. Post as a guest Name. Sign up using Email and Password. That’s how a bridge output works. The peaks seem to get distorted. And here are the input and output waveforms Yellow waveform taken at pin 8, with reference to system ground:.

And here are the input and output waveforms Yellow waveform taken at pin 8, with reference to system ground: By clicking “Post Your Tda70052, 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. If the chip still overheats, it could be faulty.

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If the IC is getting hot, well it needs to be mounted to a heat sink. The TDA was designed for an 8 ohm unit.

I’ve never had any problems with the TDA