LM4940TS/NOPB

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The LM4940TS/NOPB is a high performance audio power amplifier from Texas Instruments. Its application fields and working principles make it well suited for a variety of audio applications: loudspeakers, headphones, microphones, as well as for portable and automotive audio systems.
In its most basic form, an audio power amplifier is a device that amplifies an audio signal such that it can be heard or recorded. Achieving this requires that the amplifier increases the level of the signal while preserving its original characteristics.
The LM4940TS/NOPB supports a wide range of power output levels, making it suitable for many applications. It supports up to 15 watts at a supply voltage of 4.5V, up to 25 watts at 6V, and 40 watts at 12V. Furthermore, it has a low quiescent current of only 0.3mA and an excellent signal-to-noise ratio of 95dB.
The LM4940TS/NOPB has two stages of amplification, a pre-amplifier stage and the power amplifier stage. The pre-amplifier takes a small input signal and amplifies it in order to produce a larger signal that can be further amplified by the power amplifier. The power amplifier takes this large signal and boosts it to the desired output power level.
The LM4940TS/NOPB features an alternating current feedback loop circuit that improves stability and reduces the distortion level. Moreover, it has a built-in thermal and over-current protection feature that helps protect it from overheating and circuits spiking while the amplifier is in use.
The LM4940TS/NOPB\'s application field and working principle make it an ideal choice for audio applications where high power output, low noise, and high fidelity are desired. Its suitability for mobile and automotive audio systems is also highly desirable, as it has a wide operating voltage range, low quiescent current, and excellent signal-to-noise ratio.
Overall, the LM4940TS/NOPB provides an ideal solution for audio applications that require highly reliable performance. Its two-stage amplification, alternating current feedback loop circuit, low quiescent current, and wide supply voltage range make it suitable for a variety of audio applications, including loudspeakers, headphones, and microphones. Its high quality and low noise performance makes it a great choice for any application where efficient and reliable power output is desired.

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