By Gina Roos, editor-in-chief
Nexperia claims the industry’s fastest common mode filter (choke)/ESD protection combination with the introduction of the new PCMFxUSB3BA/C , available with one, two, or three channels. The chip also claims the industry’s widest differential passband of up to 10-GHz 3-dB frequency and a very high surge robustness of up to 7.5 A 8/20 µs. It is designed to suppress common mode and single-ended noise while minimizing the impact on the signal integrity of extremely fast data lines.
Developed to meet the requirements of Super Speed USB applications, the new devices provide one, two, and three-line pair protection (Tx ±, Rx ±, D ±) and filtering. Providing 10-Gbits/s communications line protection, the filter’s system-level robustness exceeds the IEC 61000-4-2 Level 4, suiting them for use with sensitive SoCs.
The devices also minimize reflections when compared to a discrete design and offer low clamping and high robustness thanks to Nexperia’s TrEOS technology.
“Apart from their capability to reduce EMI, common mode filters with ESD protection are also very popular for their efficiency in protecting sensitive transceivers,” said Stefan Seider, Nexperia’s product manager, in a statement. “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 PCMF filters are available in very low-inductance, space-saving WLCSP packages. They are footprint-compatible with ESD-only solutions.
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