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Clock distribution devices roll for FBDIMM apps

Posted: 08 Aug 2007 ?? ?Print Version ?Bookmark and Share

Keywords:FBDIMM applications? clock distribution? device synchronization?

ON Semiconductor has announced the expansion of its ECLinPSTM clock management portfolio with the introduction of two new clock distribution devices for synchronization of memory modules found in today's computing, data storage, networking and consumer applications.

The NB4N121K and NB4N111K feature differential Host Clock Signaling Level (HCSL) outputs and ultralow propagation delay variation for Fully Buffered Dual Inline Memory Module (FBDIMM) applications.

"Within the industry, the design of memory subsystems is transitioning from a parallel to a serial address-and-data architecture as system speed and capacity requirements continue to increase," said Dan Huettl, director of ON Semi's standard products advanced logic division. "Building upon our EClinPSTM leadership in low jitter differential signaling, we have created HCSL FBDIMM clock distribution products with the industry's lowest jitter, lowest skew and the widest fanout available. We will continue to expand both our ECLinPS clock distribution and PureEdge clock generation portfolios aimed at providing timing solutions for the entire clock tree."

The new NB4N121K and NB4N111K are 3.3V clock distribution devices with differential HCSL outputs targeted for typical FBDIMM frequencies of 100-, 133-, 166-, 200-, 266-, 333- and 400MHz. Employing advanced 0.25?m CMOS technology, they produce additive phase jitter of 0.3ps and output-to-output skew 1ps jitter with skews well above 100ps. As such, the new ECLinPS devices free up more of the system designer's precious timing budget.

NB4N121K is packaged in a RoHS-compliant, 52-pin, exposed pad QFN priced at $4 in quantities of 1,000. The NB4N111K is packaged in a RoHs-compliant 32-pin, exposed pad QFN priced at $3.75 in quantities of 1,000.

ON Semiconductor will be participating at the 7th Embedded Systems Conference-Taiwan (ESC-Taiwan) and the 15th EDA & Test-Taiwan Conference & Exhibition (EDA&T-Taiwan on August 23-24 at the Taipei International Convention Center.




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