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LM4663 Datasheet 2 Watt Stereo Class D Audio Power Amplifier

Manufacturer: National Semiconductor (now Texas Instruments)

Overview: LM4663 2 Watt Stereo Class D Audio Power Amplifier with Stereo Headphone Amplifier January 2000 LM4663 2 Watt Stereo Class D Audio Power Amplifier with Stereo Headphone.

General Description

The LM4663 is a fully integrated single supply, high efficiency Class D audio power amplifier solution.

The LM4663 utilizes a continuous time delta-sigma modulation technique that lowers output noise and THD when pared to conventional pulse width modulators.

The LM4663 also

Key Features

  • a stereo headphone amplifier that delivers 80mW into a 32Ω headset with less than 0.5% THD. The LM4663 has two stereo inputs that can be selected to drive either the headphone amplifier or the Class D amplifier. All amplifiers are protected with thermal shutdown. In standby mode, the LM4663 draws an extremely low 2µA supply current. With a 4Ω load, the IC’s efficiency for a 250mW power level is 69%, reaching 83% at a power level of 2W. The IC features click and pop reduction circuitry that minim.

More Datasheets from National Semiconductor (now Texas Instruments)

Part Number Description
LM4664 Filterless High Efficiency 1.1W Switching Audio Amplifier
LM4666 Filterless High Efficiency Stereo 1.2W Switching Audio Amplifier
LM4667 Filterless High Efficiency 1.3W Switching Audio Amplifier
LM4668 10W High-Efficiency Mono BTL Audio Power Amplifier
LM4610 Dual DC Operated Tone/Volume/Balance
LM4651 Overture Audio Power Amplifier
LM4652 Overture Audio Power Amplifier
LM4670 Filterless High Efficiency 3W Switching Audio Amplifier
LM4671 Filterless High Efficiency 2.5W Switching Audio Amplifier
LM4673 Class D Audio Power Amplifier

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