LM4941TM/NOPB

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The LM4941TM/NOPB is a low power mono/stereo audio power amplifier with an output power capability of up to 34mW into a 16Ω load. The LM4941 is designed for low power applications and has an output signal range of 0.3V to 2.5Vpp. The amplifier operates on a single supply voltage of 3.0 V to 5.5 V, making it ideal for battery powered applications. It features built-in gain select control and thermal protection, thus eliminating complicated circuit designs common to multiple-supply applications.

The LM4941 is also capable of delivering a high power output. It can deliver up to 35 mW of power into a16Ω load. The amplifier also has a typical distortion of 0.5%, making it ideal for applications requiring a low distortion signal with very low power consumption.

The LM4941TM/NOPB is available in several forms including an 8-pin Small Outline Package (SOP), 16-lead Small Outline Integrated Circuit (SOIC), 16-leadNarrow Small Outline Package (NSOP), and a 20-pin Low Power Quad Flat packages (LQFP).

Application Fields:

The LM4941 is a low power audio amplifier which can be used in a variety of portable and low power audio applications. It is particularly well suited for use in portable applications such as portable radios, MP3/CD players, handheld and gaming systems, as well as in multi-channel audio systems.

The LM4941 is also well suited for use in larger systems such as automotive sound systems, professional audio and pro-sound amplifiers, and home entertainment systems. The amplifier features thermal protection, making it an ideal choice for automotive and professional Grade amplifiers.

Working Principle:

The LM4941 is a fully integrated, monolithic audio power amplifier. It is comprised of two output channels, each containing a class AB amplifier circuit. The output channels can each deliver continuous power of up to 17mW into a 16Ω load. The amplifier features built-in current limiting circuitry to help protect it from power supply over current conditions.

Internally, the amplifier utilizes discrete resistors, capacitors, and other components to deliver its power output. The internal circuitry is designed to provide a low distortion positive going output waveform for each of the output channels. The output waveform can be adjusted using external gain select pins, which allow for fine tuning of the output waveform.

The LM4941 includes an internal thermal protection circuit which will shut down the amplifier if the junction temperature exceeds a certain threshold. This ensures that the amplifier is not damaged due to excessive temperatures caused by other components or environmental conditions.

The LM4941 also features a pop guard circuit which will suppress high frequency transients at power up or down. This feature helps to minimize or eliminate the pops or clicks that can occur when the amplifier is started or stopped.

The LM4941 is a versatile and highly efficient amplifier suitable for a variety of low power audio applications. The amplifier can deliver a high power output with low distortion and low power consumption, making it an ideal choice for a variety of audio applications.

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