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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Post as a guest Name. That’s how a bridge output works.
You can measure the sound card’s output impedance, but it’s probably low enough to not matter. Why are you using a 50 ohm speaker? Here’s the effect of increasing volume on a sine wave: The minimal voltage listed in the datasheet is 3 V, typical is 6 V and maximum is tca7052 V, so this looks a bit strange.
amplifier – TDA output DC offset – Electrical Engineering Stack Exchange
It sounds like you have a perfectly good amplifier that is just missing a tda7025 sink. You are probably overdriving the amplifier by using a sound card for testing.
TDA | TDA NXP, Audio Amplifier, 8-Pin PDIP Mono | RS Components
Put it on a PCB. I’ll try with a PCB and a nF capacitor next. Leonardo Rossi 80 8.
And here are the input and output waveforms Yellow waveform taken at pin 8, with reference to system ground: I already tfa7052 that the speaker and the amplifier can work well together, because they were salvaged from another circuit. All of your parameters mA for bias current for bridge output seem normal and you stated it put out a clean sound, so I do not think anything is wrong-except for a missing heat sink.
Post as a guest Name. If the IC is getting hot, well it needs to be mounted to a heat sink.
So where do I start fixing this? And here are the input and output waveforms Yellow waveform taken at pin 8, with reference to system ground:. Home Questions Tags Users Unanswered. The speaker is quiet much more than in the fda7052 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.
The peaks seem to get distorted. Now about my problems: The gain is set to 20dB with pin 4 being driven at 1Vdc.
The TDA was designed for an 8 ohm unit. I also used nF electrolytic capacitor, since I don’t have any ceramic at the moment. I should also mention that this is my first circuit on a breadboard, so it could be causing problems too. Home Questions Tags Users Unanswered. If the chip still overheats, it could be faulty. Sign up using Facebook.