Introduction
The stereo audio amplifier is essential in all ways of playing audio. The stereo amplifier provides the best audio feels to you. So in this post, i would like to share the best 20 watt stereo audio amplifier circuit using a TDA7491HV Dual BTL class d audio amplifier circuit.
The ic can deliver up-to 20 watt per channel so it is enough for making a home audio amplifier or a car radio amplifier. The efficiency of this audio amplifier is about 90 percent and the maximum speaker input impedance of 8 ohms.
The distortion is very low as compared with any other audio amplifier ic. The IC consists of special features such as, four selectable gains, differential inputs, and protection features.
Circuit Diagram
How does the TDA7491 compare with other audio amplifiers?
The tda7491hv is pin wise compatible with the TDA7491p and the TDA7491LP, as comparing with the other audio amplifier circuit the tda7491HV ic had some unique features to like,
Wide range of single power supply operation like 8 v to 15 v dc supply. Which makes the audio amplifier circuit work on the different applications.
The other advantage of the circuit is the efficiency, about 90 percent means that the Ic consumes energy and produces less heat so the 90 percent of the energy is used for converting the audio sound.
