LM4701T/NOPB

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Audio amplifiers, like the LM4701T/NOPB (Texas Instruments Boomer Series of Class AB amplifiers), are commonly used to boost or increase a sound or audio signal. The LM4701T/NOPB features a dual configuration for versatility, enabling the user to control and manage the audio by adjusting the current and voltage in the circuit. In this article, we’ll discuss the application field and working principle of the LM4701T/NOPB.

Application Field of LM4701T/NOPB

The LM4701T/NOPB offers low external component counts and low noise operation, making it suitable for a wide range of audio applications. These applications include wireless speakers, mobile phone audio systems, portable audio systems and more. The amplifier can also be used in active crossover networks and other audio systems. Also, the LM4701T/NOPB has a high maximum supply voltage of +15V and can operate a wide range of supply voltages from +2.4V to +18V. This makes it an ideal choice for audio systems operating from both single and multiple power supplies.

The LM4701T/NOPB is a dual, high performance, low noise amplifier with an integrated PNP output stage. It features an open loop bandwidth of 300 kHz, which provides a distortion-free output. It also features a low quiescent current (only 140uA) and a wide supply voltage range (2.4V to 18V). The amplifier also offers excellent distortion performance, low thermal resistance and fast overload recovery.

Working Principle of LM4701T/NOPB

The LM4701T/NOPB operates in a Class AB configuration, which provides the user with more flexibility and control. In this configuration, the user can adjust the current and voltage in the circuit to their desired levels. The amplifier has an operational gain of 11 dB, which helps provide a clean and amplified output. This output is achieved by operating both input stages in parallel, with one stage providing the positive portion of the output and the other stage providing the negative portion of the output.

The LM4701T/NOPB also features integrated protection circuitry, including thermal protection, reverse polarity protection, and power supply monitoring. This integrated protection ensures the amplifier maintains a stable and safe operating level, and ultimately, provides the user with a long lasting and reliable performance. Additionally, the amplifier has a wide supply range, low quiescent current, and low noise operation, making it an ideal choice for audio applications.

Conclusion

In conclusion, the LM4701T/NOPB is a versatile, low noise, low external component count amplifier suited for a wide variety of audio applications. The amplifier operates in a Class AB configuration, and features an operational gain of 11 dB, a wide supply range from 2.4V to 18V, a high maximum supply voltage of +15V, a wide open loop bandwidth, and integrated protection circuitry for a reliable and long lasting performance.

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