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ESD protection devices offer ultralow capacitance

Posted: 23 Jun 2008 ?? ?Print Version ?Bookmark and Share

Keywords:ESD protection devices? ultralow capacitance? RF antenna?

ESD7L5.0D, NUP4212

ON Semiconductor has expanded its high performance off-chip ESD protection portfolio with the introduction of two best-in-class devicesthe ESD7L5.0D and the NUP4212. The products have been designed using ON Semiconductor's propriety integrated ESD protection platform, which enhances clamping performance while maintaining low capacitance and small die size.

The ESD7L5.0D protects two high-speed data lines at 0.5pF capacitance per line in the tiny 1.2mm x 1.2mm x 0.5mm SOT-723 package. Integrating ON Semiconductor's low capacitance technology into a 3-pin package provides the designer with a solution to protect the D+ and D- lines of a USB2.0 port with a single device. The ESD7L5.0D can also be connected cathode to cathode to protect a single bidirectional line at 0.25pF, suited for protecting high frequency RF antenna lines.

The NUP4212 protects four high speed data lines at 0.7pF per line and 2Vcc power lines in the compact 1.6mm x 1.6mm x 0.5mm UDFN-6 package. This enables the designer to protect the D+ and D- lines plus the Vcc line on two USB ports with a single integrated solution.

Both new devices share key features, which distinguish the company's proprietary technology from competitive offerings. The ESD7L5.0D and NUP4212 are capable of clamping an input ESD waveform of 15kV to less than 7V in a matter of nanoseconds, ensuring the highest levels of protection for today's ESD sensitive ICs. Other low capacitance off-chip ESD protection technologies, such as polymer and ceramic-based varistors, offer low capacitance, but their ESD clamping voltage is higher than the ON Semiconductor solution. In addition, the ON Semiconductor silicon devices are free from wearout mechanisms that affect the reliability and performance of passive technologies after multiple surge events such as ESD.

"Next generation portable applications require improved performance and increased design flexibility at higher and higher data rates. ON Semiconductor continues to respond to this trend by introducing a complete family of low capacitance ESD protection solutions," said Mamoon Rashid, ON Semiconductor vice president and general manager of discrete products division.

The ESD7L5.0DT5G is available in a SOT-723 package and is priced at 20 cents per unit in 8,000 units quantities. The NUP4212 is available in a UDFN-6 package and is priced at 61 cents per unit in 3,000-unit quantities.





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