TDA2030 Amplifier Circuit: Crystal Clear Sound

Welcome to the world of do-it-yourself electronics and audio enthusiasts! In this article, we will go into the intriguing world of designing your own TDA2030 amplifier circuit. Explore the complexities of putting this adaptable circuit together, soldering it, and fine-tuning it to fully utilise the power of audio amplification. Take the journey with us to develop a customised TDA2030 amplifier that makes your sound come to life, whether you’re an experienced hobbyist trying to enhance your audio experience or a novice searching for an interesting project. Prepare to experience the thrill of building your very own musical masterpiece!

What is an IC TDA2030?

An integrated circuit (IC) that is frequently used as an audio amplifier is the TDA2030. It is well-liked for its ease of use and dependability in boosting audio signals, which makes it appropriate for a variety of audio applications.

The TDA2030 is a Pentawatt-sized monolithic integrated circuit intended for use as a low-frequency class AB amplifier. One good option might be the TDA2030 IC.

It has the capacity to deliver 8 watts to 8Ω speakers and 14 watts to the subwoofer. Because of its adaptability, the TDA2030 IC can be used in various audio applications, such as portable party speakers, hi-fi home audio systems, and automobile stereo systems.

Features & Specifications of the Circuit


  • Low noise
  • Low distortion
  • Thermal shutdown protection
  • High input impedance
  • Short-circuit protection


  • Maximum Power Output: 14W (4Ω), 8W (8Ω)
  • Supply Voltage Range: ±4.5V to ±18V
  • Input Voltage Range: ±1.5V to ±6V
  • Input Impedance: 22kΩ
  • Signal-to-Noise Ratio (SNR): > 90dB
  • Total Harmonic Distortion (THD): < 0.1%


TDA2030 Audio Amplifier

Circuit Schematic



  • TDA2030 Amplifier IC
  • 1N4007 P-N Diode
  • 1uF/16V Electrolytic Capacitor (x2)
  • 100uF/25 Electrolytic Capacitor (x2)
  • 100nF Ceramic Capacitor (x2)
  • 1nF Ceramic Capacitor
  • Resistor (47KΩ, 1.5KΩ, 1KΩ)
  • 8Ω Speaker
  • Wires
  • 3.5 mm Jack

How to Design the TDA2030 Amplifier Circuit?

  • After positioning the TDA2030 IC on the heat sink, solder it there.
  • Join pin 5 and the TDA2030 IC’s ground with a 100nF ceramic capacitor and a 100uF /25V capacitor.
  • Attach a 47KΩ resistor between pin 1 and the audio input jack’s ground.
  • Attach a 1uF capacitor and a 1.5KΩ resistor in series between pin 1 and the audio input jack’s ground.
  • Take a 1 uF capacitor and attach it to pin 1 and the audio jack’s mono input source.
  • Join two 1N4007 PN diodes in series and attach them between pins 3 and 5. Additionally, use a 47KΩ resistor to link pin 2 and the middle of these two 1N4007s.
  • Attach a 100uF / 25V and a 100nF ceramic capacitor between pin 3 and the audio input jack’s ground.
  • Lastly, attach an 8Ω speaker by connecting pin 4 to the audio jack’s ground input. Connect a 1KΩ resistor and a 1nF ceramic capacitor between the speaker’s two poles to stop it from humming.

Working Principle of TDA2030 Amplifier Circuit

The TDA2030 amplifier circuit can operate on a single-mode or dual-mode power source; to make things simple, I preferred a single-mode power supply that used a 12V supply. The supply’s VCC terminal is connected to pin 5, while the supply’s negative terminal is connected to pin 3. Because this IC is a power amplifier, it needs a reasonable amount of electricity to run, therefore ensure your power source has appropriate capacity.

A potential divider is set up between pins 4 and 2 by the resistors R1 and R2. The integrated circuit is shielded from opposing currents by the two diodes, D1 and D2.

Any ordinary speaker or tweeter with a value of 4Ω, 6Ω, or 8Ω may serve as speaker SP1. A microphone or any other audio source with a 3.5mm jack can be used as the audio input supply C2. Ground the other point via the R3 resistor and connect the Vcc terminal to C2. Don’t forget that even the simplest mono-channel sound sources can be amplified with that simple amplifier. In order to create a single channel, merge the left and right audio channel wires when you have two of them.

The TDA2030 is a great option for anyone searching for an affordable, efficient amplifier circuit that generates high-quality audio output. This circuit’s minimal distortion, short-circuit protection, and thermal cutoff qualities make it a fantastic choice for a variety of audio applications. The parts needed to build the circuit are readily accessible on the market, and the process is also relatively simple.

1 thought on “TDA2030 Amplifier Circuit: Crystal Clear Sound”

Leave a Comment