It is designed to suppress common mode and single-ended noise while minimizing the impact on signal integrity of extremely fast data lines.
Developed to meet the requirements of USB SuperSpeed applications, the new devices provide effective protection and filtering of 1, 2, and 3 line pairs (Tx +/-, Rx +/-, D +/-). Tested for 10 Gbps communication line protection, the filter's system-level robustness exceeds IEC 61000-4-2 Level 4, making it suitable for use with sensitive SoCs. The solution also minimizes reflections compared to a discrete design. Integration of Nexperia's TrEOS technology results in low clamping and high robustness. The PCMFxUSB3BA/C expands Nexperia's family of common-mode filters (PCMF devices), helping to optimize the choice between differential passband and common-mode rejection at the signal's fundamentals and higher harmonics.
Comments from Stefan Seider, Product Manager, Nexperia: “In addition to their ability to reduce EMI, common-mode filters with ESD protection are also very popular for their efficiency in protecting sensitive transceivers: they add an impedance to the signal line pair, which is very small for differential signals but shows significant attenuation of common-mode noise, as well as single-ended transients such as ESD.”.
The new PCMF filters are available in very low inductance, space-saving WLCSP packages. The devices are footprint-compatible with ESD-only solutions for quick design changes.
