MAX9728AETC+T

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The MAX9728AETC+T application field and its working principle have gained much attention from the Linear--Amplifiers--Audio industry. Developed by Maxim Integrated, the MAX9728AETC+T is a single-channel (mono) Class D audio power amplifier that supports a fully featured flexible input architecture for audio, voice, and speech processing applications. The power output on the MAX9728AETC+T can be as high as 1.5 W with an 8 Ω external speaker impedance, enabling design flexibility both in terms of power and form factor. The device is designed to meet the stringent power efficiency and quality required for consumer audio products.

The device is equipped with several innovative features such as a high efficiency, low noise power stage, adjustable gain and voltage output, low EMI operation, intelligent thermal protection, and various control features. The MAX9728AETC+T also integrates a charge pump allowing the device to be used in applications operating at both 5 V and ±3.3 V.

The MAX9728AETC+T has a unique design architecture which simplifies and reduces the overall design complexity compared to other devices. The device’s two amplifiers, a differential voltage amplifier and a power amplifier, are both powered from the same power supply. This means the design can benefit from fewer components and shorter wiring paths for improved performance. The device is powered by four external linear regulators, one for each amplifier, and these regulate the output signals of the two amplifiers to the required levels depending on the audio requirements.

The MAX9728AETC+T makes use of a direct modulation architecture and it is this architecture which enables the device to achieve the high efficiency and distortion levels required by audio applications. The direct modulation architecture also enables the device to achieve the highest dynamic range, with 0.05% THD+N at 1 kHz and 0.2% at 20 kHz. The device can operate in Class D mode, allowing for a higher power efficiency, but is also able to switch to Class AB mode when more power is needed.

The MAX9728AETC+T provides the flexibility to control audio signals with a range of control configurations. The device can be controlled either by hardware or by software through a serial bus, enabling a user to choose the best method to control their audio. The device also includes a low-power standby mode, which can be enabled through either hardware or software control.

In addition to the direct modulation architecture, the MAX9728AETC+T also integrates analog filters for limiting the frequency response for applications where wide range audio signals may be desired. The device also provides the flexibility to reduce the in-band noise by providing the option to increase the gain and reducing the bandwidth of the analog filters.

The MAX9728AETC+T is designed to emit lower EMI levels possible. Its EMI reduction features include an adaptively configurable pulse-width-modulated power mode, an integrated EMI suppressing filter, and low ESD protection. The device also features a programmable mute pin to prevent the output noise during the period of an incoming audio signal.

The MAX9728AETC+T also integrates sophisticated thermal protection features, which protect the device from high temperatures and excess power consumption. The device also features a thermal shutdown circuit, which shuts down the device when temperatures reach a certain level.

The MAX9728AETC+T is a very versatile device and it has applications in many fields in the Linear--Amplifiers--Audio industry. It is capable of producing high quality audio with a wide range of audio formats. The device’s low power consumption and its power saving standby mode make it a great choice for portable audio applications. The device’s EMI suppression technology ensures compliance with all international EMI standards. And finally, the device’s wide range of control options and its high level of thermal protection all make the device an excellent choice for audio applications.

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