1W Audio Amplifier with TDA7052

This is the circuit diagram of 1W audio amplifier which use TDA7052 as the main component and other 5 pieces of components to support the main component. The ideal supply voltage of this circuit is about 6-12V and no heatsink required. The schematic is for mono audio channel, just build two similar circuit for stereo channel.

1W Mono Amplifier

Components :

  • R1 : 1K ohm resistor
  • R2 : 10K ohm log potentiometer
  • C1 : 2.2uF/16V electrolytic capacitor
  • C2 : 100nF ceramic/mono
  • C3 : 100uF electrolytic
  • TDA7052 Integrated Circuit
  • 8 pin IC socket


1W Audio Amplifier Specifications :

  • D.C. input : 3 – 15 V at < 300 mA.
  • Idle current < 8 mA, 4 mA typical. Power output > 1 Watt @ 8 ohms maximum.
  • > 0.25 Watt RMS continuous
  • Freq. Resp. > 20 Hz – 20 kHz
  • ~ 10 – 50 kHz, – 3dB
  • THD < 1 % @ 100 mW, 0.2% Typ. S/N ratio > 70 dBA
  • Gain ~ 30 dB maximum.
  • Input Z ~ 10 k ohm.

If you prefer to buy the kit of this circuit, just go the electronickits.com.
The tutorial also available in PDF format, download the file here:

Download the datasheet of TDA7052 here:

1W Audio Amplifier Circuit with TDA7052

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