TDA7294 IC 100W Audio Amplifier Circuit
In the TDA7294 IC 100W Audio Amplifier Circuit, the TDA7294 is configured to provide 100W output power into an 8Ohm loudspeaker at +/- 38V supply. C8 is the input coupling capacitor and the input is applied to the non-inverting input (Pin3) of the IC. C3 and C9 are power supply filter capacitors while C10 and C4 are bypass capacitors. C2 is the bootstrap capacitor.
TDA7294 IC 100W Audio Amplifier Circuit Diagram
The TDA7294 IC 100W Audio Amplifier Circuit RC network comprising of R1 and C1 improves the high-frequency stability of the amplifier and also prevents oscillations. R2 and C6 set the mute time constant while R3 and C5 set the standby time constant. S1 and the mute switch and S2 are the standby switch. R5 is the input resistance and the amplifiers input impedance has a direct relationship to its value. R4 and R6 are used for setting type closed loop gain and with the used value, the gain is 30dB. C2 is a feedback capacitor and it also provides DC decoupling.
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