LM4901MM/NOPB

The LM4901MM/NOPB is an integrated audio amplifier circuit which is used to provide high quality sound output. It is primarily focused on mobile applications, including mobile speakers, laptop speakers, and netbooks. This audio amplifier can provide a low distortion, low noise, and wide-bandwidth performance. It is suitable for providing amplified audio for sound source material with a broad dynamic range, such as MP3 players, digital audio players, and portable media players.

The LM4901MM/NOPB is a 1 W mono Class-D audio amplifier. It is designed to output an audio signal in mono as opposed to a stereo signal. This mono output is accomplished by a fixed internal gain of 0 dB (nominal). It has a very high efficiency, typically reaching up to 90%. This allows the device to minimize power consumption, while still providing a output of 1 W of audio power.

The LM4901MM/NOPB can output 1 W of audio power through a 4 Ω to 8 Ω speaker. It can also be used to drive a headphone, up to 300 mW. It has a low THD + N of 0.03% @ 1 W, 0.057% @ 500 mW, and 0.098% @ 300 mW. The audio amplifier also provides a very low noise performance of -82 dBV (typical) when driving an 8 Ω speaker, and -96 dBV (typical) when driving a headphone. The audio amplifier is capable of a wide frequency response range, with a 10 Hz - 22 kHz frequency response at 1 W and a 20 Hz - 60 kHz frequency response when driving a headphone, along with a 15 dBu typical output.

The LM4901MM/NOPB is designed to operate over a wide voltage range of 2.7 V to 5.5 V. at its lower operating voltage, the device consumes only 2.6 mA of average quiescent current. It is rated to be able to output 1 W over a temperature range of -40 to +85 °C.

The LM4901MM/NOPB audio amplifier is designed to be used in a wide variety of applications, and can be used in audio systems in products ranging from mobile phones and portable multimedia devices to automotive and industrial applications.

The LM4901MM/NOPB is a single-ended Class-D audio amplifier that uses two power stages, a voltage controlled oscillator (VCO) and an output stage. The VCO generates a sine-wave for driving the class-D output stage, providing efficient power conversion. The output stage is a CMOS inverter, which switches between output states in response to the input from the VCO. The output of the inverter is then sent to a filter, which removes any residual harmonics, resulting in a clean filtered output.

The LM4901MM/NOPB audio amplifier combines low power consumption with a wide-bandwidth performance and low distortion, making it a great choice for mobile applications. It is rated to output 1 W of audio power over a wide voltage range, with a high efficiency typically reaching 90%. It has a low THD + N and a wide frequency response, and is rated to work over a wide temperature range of -40 to +85 °C. This device is suitable for providing amplified audio for sound source material with a broad dynamic range, from MP3 players to portable media players.