Electronic Design

High-Performance Clock Buffers Yield Noise-Immune Clock Signals

Next-generation unbuffered memory modules have a new weapon in their arsenal: Zero-Buffer DDR (ZB-DDR) technology. Using discreet zero-delay clock buffers, patent-pending ZB-DDR combines the robustness of server class memory with the low latency of unbuffered modules for better data integrity, lower noise, and lower susceptibility to interference over a wider frequency spectrum. Yet the technology remains fully compatible with all current motherboards.

ZB-DDR can generate loss-less memory clock signals at the module level—with a clock buffer delay of 50 ps or less—that aren't subject to the impact of noise found in a distributed clock tree. To achieve that, ZB-DDR uses the Inphi INCU 877 clock buffers with a custom-developed pc-board matched to the clock buffer's impedance.

Developed by the OCZ Technology Group and Inphi Corp., the modules will be available in the first quarter of 2005. Module pricing will be determined based on memory-chip pricing in the first quarter.

OCZ Technology Group

Inphi Corp.

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