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Equaliser optimises high-speed signal routing

Posted: 18 Aug 2009     Print Version  Bookmark and Share

Keywords:equaliser  interconnect  SerDes 

Maxim Integrated Products has launched the MAX3986, a 1Gbps to 10.3Gbps, quad linear equaliser for copper interconnects.

A high-performance, stand-alone equaliser, the device offers best-in-class port matching (typical return loss is 24dB) and channel-to-channel isolation (33dB, typ). Each channel is capable of compensating for losses in 20 inches of FR4, with data rates up to 10.3Gbps. Moreover, the MAX3986 is touted to be the first stand-alone equaliser that can also be used to extend the reach of limiting equalisers and decision feedback equalisers (DFEs), commonly found integrated into SerDes and ASICs. The expanded linear range of the MAX3986 preserves the essential signal characteristics needed for optimum DFE performance. The MAX3986 can be used in SDR, DDR, and QDR InfiniBand; SDR and DDR IEEE 803.3ae XAUI; 8.5Gbps Fibre Channel; and serial 10.3Gbps Ethernet applications for backplanes and copper cable assemblies.

The MAX3986 operates from a 3.3V supply. This device is packaged in a 5mm x 7mm, 38-pin TQFN package, and has a pinout designed to minimise board space and optimise high-speed signal routing. The MAX3986 is fully specified over the 0°C to +85°C temperature range. Prices start at Rs.998.94 ($20.45) (1000-up, FOB USA).

An evaluation board that allows exercise of all channels is available.





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