Stereo Headphone Amplifier
Stereo headphone amplifier based on LM4910 IC is an audio power amplifier primarily designed for headphone. The IC can be operated from 3.3V and it can deliver 0.35mW output power into a 32-ohm load. The LM4910 has very low distortion ( less than 1%) and the shutdown current is less than 1uA. This low shut down current makes it suitable for battery operated applications.
Stereo Headphone Amplifier using LM4910 IC
Circuit diagram of the Stereo Headphone Amplifier using LM4910 IC is shown above.C1 and C2 are the input DC decoupling capacitors for the left and right input channels. R1 and R2 are the respective input resistors. R3 is the feedback resistor for left channel while R4 is the feedback resistor for the right channel. C3 is the power supply filter capacitor.
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