STMicroelectronics ECMF2-40A100N10 and ECMF4-40A100N10 common-mode filters

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The latest common-mode filters from STMicroelectronics have a wide differential bandwidth of 10.7 GHz to protect antenna sensitivity in adjacent wireless circuitry from the latest serial digital interfaces.

The two-channel ECMF2-40A100N10 and four-channel ECMF4-40A100N10 are compatible with high-speed interface standards including USB 3.2 Gen 2, USB4, HDMI 2.1 and DisplayPort. With their low serial resistance of just 3Ω, which minimises eye-diagram distortion, the filters preserve signal integrity. The filters deliver deep common-mode attenuation (S_cc21) from 2.4 to 7 GHz, reaching -21 dB at 5 GHz, and effectively prevent interference with Wi-Fi and Bluetooth receivers.

In addition to tackling antenna desensitivity issues, the filters can be used for general interface-noise reduction to enable compliance with electromagnetic compatibility (EMC) regulations. ESD protection up to ±9 kV (contact discharge) and ±20 kV (air discharge) is also built in, which exceeds IEC 61000-4-2 level 4.

Both filters are housed in compact micro quad flat no-lead (µQFN) packages only 0.5 mm high and are suited to demanding industrial applications as well as consumer products. They can be used to protect smart factory equipment, imaging systems, medical devices, laboratory equipment, home-automation systems, set-top boxes, smart televisions, game consoles, notebooks, tablets and docking stations.

For more information: www.st.com/ecmf-common-mode-filters.