Friday, November 11, 2011

TDA2030 : 15W OTL Audio Amplifier Circuit

This is the circuit diagram of 15W OTL audio amplifier based single power IC TDA2030.

TDA2030 : 15W OTL Audio Amplifier Circuit diagram

The TDA2030 is a popular power chip for low power amplifier circuit. The circuit will deliver about 15W audio power when use 8ohm loudspeakers. For maximum power output, you need 24VDC power supply with 1A current, for single/mono channel. Use power supply with 2A minimum output current for stereo channel. Do not forget to mount a heatsink on the IC.

15W OTL Audio Amplifier PCB design

TDA2030 : 15W OTL Audio Amplifier Circuit PCB design

About Audio Amplifier
An audio amplifier is an electronic amplifier that amplifies low-power audio signals (signals composed primarily of frequencies between 20 - 20 000 Hz, the human range of hearing) to a level suitable for driving loudspeakers and is the final stage in a typical audio playback chain.

The preceding stages in such a chain are low power audio amplifiers which perform tasks like pre-amplification, equalization, tone control, mixing/effects, or audio sources like record players, CD players, and cassette players. Most audio amplifiers require these low-level inputs to adhere to line levels.

While the input signal to an audio amplifier may measure only a few hundred microwatts, its output may be tens, hundreds, or thousands of watts. More explanation about power audio amplifier can be found at

This is a video tutorial about how to a very simple audio amplifier based on the LM386 amplifier chip. It can be built for less than $20 (or might be less than $8 in some countries) and used to amplify any low level audio signal including a guitar, bass or mp3 player.

Watch the video:

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