MAX280CWE+

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The MAX280CWE+ filters are active, low-power EMI (electromagnetic interference) and RFI (radio-frequency interference) solutions designed for use in a wide range of interface requirements. They are designed to be plugged into standard I/O connectors and used in either benign or hostile RF environments.

MAX280CWE+ filters combine an ultra-low-noise, high-stability, low-distortion ceramic filter block with a high-current power inductor. This combination provides a robust solution that offers low insertion loss, low EMI/RFI susceptibility and high linearity, while consuming very low power. The power inductor reduces circuit complexity, while the ceramic filter block guarantees a steady return loss across a wide frequency range.

MAX280CWE+ filters are used in a variety of applications, including LCD panel sources, digital television receivers, mobile handsets, data centre applications, and wireless communications. In wireless applications, for example, the filters reduce out-of-band interference and are used with packet-based networks such as WCDMA and GSM.

The primary function of MAX280CWE+ filters is to reduce EMI and RFI noise created by the circuitry of the device they are attached to. This helps maintain high signal integrity and reliability while improving overall system performance. The filters are also used to manage the power consumption of the device they are connected to, providing improved power efficiency.

The working principle of the MAX280CWE+ filter is based on the design of the ceramic filter block and the power inductor. The ceramic filter block is designed to provide a steady return loss across a wide frequency range. It is also designed to efficiently attenuate electromagnetic (EM) signals, while allowing the desired signal to pass through with minimal attenuation. The inductor is designed to maintain power to the device, while allowing the filter block to reject unwanted noise.

The MAX280CWE+ filter further improves power savings by introducing low-voltage power switching. This feature allows the filter to reduce power consumption when idle, providing improved power savings and efficiency. In addition, the MAX280CWE+ filter also implements a host-based clock-gating feature, which further reduces power consumption.

Overall, the MAX280CWE+ filter is a robust solution that offers a combination of low-noise, high-stability, and low-power operation, while providing a low insertion loss, low EMI/RFI susceptibility and high linearity performance. This makes the MAX280CWE+ filter an ideal solution for a wide range of interface applications, such as in LCD panel sources, digital television receivers, mobile handsets, and data centres.

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