Amplifier IC 2-Channel (Stereo) Class AB Multiwatt. TDA datasheet, TDA circuit, TDA data sheet: STMICROELECTRONICS – 20+20W STEREO AMPLIFIER WITH STAND-BY, alldatasheet. TDA – STMicroelectronics – Download PCB Footprint & Schematic Symbol, Datasheet, Pinout in Altium, Eagle, KiCAD, DesignSpark, CADSTAR, OrCAD.
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amplifier – TDA Audio Amplfier’s SVR/MUTING pin (pin3) – Electrical Engineering Stack Exchange
You can mute it again by just discharging the capacitor with a transistor switch, I think. The capacitor has two behaviors: Post as a guest Name.
I found something that said its to eliminate the thump the speaker gives off when power is applied or removed to and from the amplifier. You can check TDA for a more thorough explanation on how it is supposed to work. As the capacitor charges, it reaches a specific voltage and an internal comparator halts the muting effect. I think they’ve managed to combine these two functions into one by using a capacitor. When the voltage at the pin is close to ground, the output is muted.
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When power is applied, you could hold pin 3 low for x seconds using a RC circuit or a voltage regulator or voltage supervisor or a tdx7262, enough time for the main voltage to stabilize and for the amplifier to be fully on.
I must design a pcb with datasheet specifications but I don’t understand pin 3 and the 0. The device is switched off until pin 3 reaches 0. As to the thump, that requires a sort of logic to make happen.
Luqmaan 18 1 1 5. Doing the same when power is disconnected is much more complicated. This is used for sensitive applications or circuit’s Where a brown out voltage behavior is unwelcomed.