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ON Semi crosspoint switch suits networking apps

Posted: 17 Oct 2003 ?? ?Print Version ?Bookmark and Share

Keywords:on semiconductor? nbsg72a? crosspoint switch?

ON Semiconductor has introduced the NBSG72A Silicon Germanium (SiGe) based, high bandwidth, fully differential crosspoint switch with output level select capabilities. Designed for telecommunications, networking and automated test equipment industries, the product operates at speeds above 7GHz with propagation delay of 140ps, rise times of 50ps and fall times of 45ps.

The device is claimed by the company as the fastest PECL crosspoint switch for high performance applications at OC-48 and OC-96 speeds of 2.5Gbps and 5Gbps, respectively. It features two inputs either of which can be routed directly, multiplexed to one or two outputs or fanned-out to both via the single-ended control pins that accept low voltage ECL (LVECL) or low voltage CMOS (LVCMOS) and transistor-transistor logic (TTL).

In addition to routing reference clocks to different serdes/framers that use multi-rate devices, it can be implemented as a fan-out buffer, a serial digital video router, automatic protection switch or it can provide fast failure management by switching to alternative clock and data signals in a given system.

The Output Level Select feature of the NBSG72A offers programmability to the output signal peak-to-peak amplitude from 0mV to 800mV in five discrete steps. This ensures the lowest possible electromagnetic interference, crosstalk, and system noise.

Packaged in a 16-pin QFN that measures 3-by-3mm, the device offers a minimum impact to board space and industrial-grade temperature tolerance of -40C to 85C.





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