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Power Line Filter Modules

The FMAC-0932-2510 is a precision power line filter module that offers high resolution to reduce the effects of external common mode noise on communications lines. This filter module is engineered to ensure the filtering of common mode noise on differential communication lines up to 10 MHz. It is specially designed to deliver an effective common mode noise suppression by filtering power line common mode noise in the frequency ranges of 25 to 150 KHz, 8-25 KHz, and 20-50 KHz. This filter module offers outstanding features such as a very low pass loss, high ripple rejection, and low insertional loss.

Application Field

The FMAC-0932-2510 filter module is specifically designed for applications that must pass signals with minimal signal degradation. For instance, the filter module can be used in cable modems, digital terminal adapters, set-top boxes, residential gateways, and a variety of other consumer products that require a reliable and precise power line filter. Additionally, the filter module can be used to improve the performance of digital communication applications on telecommunication networks, computer networks, and audio/video systems. It is also suitable for use in applications involving digital interface protection, EMI shielding, and high frequency switching regulator designs.

Working Principle

The FMAC-0932-2510 power line filter module features an optimal combination of two elements that work together to reject common mode noise. The first element is a ferrite-core inductor, which provides low-frequency common mode attenuation (up to 150 KHz) by effectively rejecting common mode noise from power lines. The second element is a high-frequency filter capacitor, which provides high-frequency common mode attenuation (20-50 KHz range). This capacitor absorbs high-frequency power-line noise and also reduces the power drawn by the filter module.

Both of these elements are designed to be completely pass-through for differential signals, while rejecting unwanted common mode noise. When a differential signal is sent through the filter module, the differential signal is passed through the inductor, resulting in an attenuation of common mode noise, while the differential signals remain intact. The capacitor then absorbs the residual high-frequency power line noise, further reducing the effects of common mode noise.

The FMAC-0932-2510 filter module also features an integrated active element that provides additional common mode noise suppression. This active element is powered by a hybrid active element, which provides an effective boost to the filter module’s attenuation performance. The active element eliminates any residual harmonics that may be present in the transmitted signal. Additionally, it also helps to reduce the peak voltage levels, resulting in more reliable and accurate signals.

Advantages

The FMAC-0932-2510 power line filter module offers several advantages that make it the optimal choice for a wide range of applications. Firstly, the filter module offers high levels of common mode noise suppression in the frequency ranges of 25 to 150 KHz, 8-25 KHz, and 20-50 KHz. It also features a very low pass loss, high ripple rejection, and low insertional loss. Furthermore, the integrated active element provides additional common mode noise suppression, resulting in more reliable and accurate signals, while also reducing voltage peaks. All of these features make the FMAC-0932-2510 filter module the optimal choice for a wide range of applications.

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