STMicroelectronics ECMF04-4HSM10Y and ECMF04-4HSWM10Y common mode filters
STMicroelectronics’ ECMF04-4HSM10Y and ECMF04-4HSWM10Y automotive-qualified common mode filters (CMF) for high-speed serial buses protect interface ICs by integrating transient-suppression diodes with low clamping voltage. Featuring automotive-grade qualification and automotive surge compliance, the CMFs are not only produced and qualified according to AEC-Q101 requirements but are also designed and tested against automotive surge specifics such as ISO10605.
The filters replace discrete common-mode chokes or LTCC (low-temperature cofired ceramic) devices that are typically larger and provide no ESD protection. Essential for advanced driver assistance systems (ADAS), they are placed on high-speed data lines for camera, radar, display, multimedia and other connections to prevent interference with wireless-communication equipment. With a 3.5 mm2 footprint and measuring 0.75 mm high, the devices should save board space, simplify design and lower bill-of-materials costs.
The ECMF04-4HSM10Y has 2.2 GHz differential bandwidth to suppress common-mode noise on HDMI 1.4, MIPI and connections. Deep attenuation, reaching -25 dB at 900 MHz and -14 dB at 1.5 GHz, prevents radiated noise from reducing the sensitivity of cellular and GPS antennas.
The wider 3.5 GHz bandwidth of the ECMF04-4HSWM10Y extends the application range to LVDS, DisplayPort, USB 3.1 and HDMI 2.0 buses. With -30 dB attenuation at 2.4 GHz and -16 dB at 5 GHz, the product protects Bluetooth equipment and V2X (vehicle-to-everything) Wi-Fi antennas, as well as cellular and GPS systems.
For more information: www.st.com/automotive-ecmf.
Phone: 02 9158 7200
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