MAX9741ETN+D

Audio amplifiers are circuits commonly used in modern technology to increase the audio signal to a higher voltage gain as it is sent to loudspeakers and other audio output devices. The MAX9741ETN+D is an example of an audio amplifier designed to offer a higher level of performance and make it easier to build audio systems on any budget.

Device Description

The MAX9741ETN+D audio amplifier is a single-power operational amplifier featuring an output drive capability of 8 to 15Vp-p (quiescent) and 20Vp-p (DC load). It is capable of providing a maximum power output of 5W at a frequency range of 20Hz to 100kHz. This amplifier includes a high gain output follower that can drive heavy, low-impedance loads. Its unique design also provides audio systems with noise cancelling, distortion-free performance and precision audio control.

Performance Features

The MAX9741ETN+D audio amplifier comes with a wide range of features designed to improve its performance and efficiency. These features include a fastslew rate of 10V/µs, supply voltage ranges of 6.8 to 15V, and an output current of 0.7A peak and 0.25A continuous. It also provides thermal and under-voltage protection, and features a power-saving mode. Additionally, the device offers a 3k-ohm input impedance for improved noise reduction, along with a distortion-free, low-pass filter design to minimize distortion.

Application Fields

The MAX9741ETN+D audio amplifier is typically used in applications where low noise and high performance are of utmost importance. It is commonly used in a wide range of audio equipment such as PA systems, recording studios, and home theater applications, as well as portable audio devices. It is also used in a variety of other audio applications, including instrument amplifiers, hearing aids, and Bluetooth products.

Working Principle

The MAX9741ETN+D audio amplifier functions by amplifying an input signal using the op-amp circuit. This is done by using two feedback loops of differing gain which are connected in series to the input and output of the amplifier. The output voltage of the amplifier is then proportional to the difference between the two feedback signals. This amplified output is then carried to the speaker and other audio output devices.

The amplifier also contains a low-pass filter, which is connected between the input and output of the device and acts as an anti-aliasing filter to help reduce any high-frequency noise interference. Additionally, the device includes an under-voltage protection circuit, which is designed to help prevent any potential damage from under-voltage conditions by limiting the operating current through the amplifier.

Conclusion

The MAX9741ETN+D audio amplifier provides excellent performance and is a popular choice for audio equipment ranging from PA systems and home theaters to portable audio devices. It offers a wide range of features such as a fast slew rate, thermal protection, and power-saving mode, making it a great choice for audio systems of any budget. Additionally, the device\'s output current of 0.7A peak and 0.25A continuous makes it an ideal choice for driving heavy, low-impedance loads.