266MHz Crystal Oscillator Delivers Tight Duty-Cycle Performance for DDR Applications
Note to Editor:
- The DS4266 is a crystal oscillator designed for DDR applications requiring a 266MHz clock with extremely tight duty-cycle performance.
- This device increases system-timing margins and enables an extremely low bit-error rate (BER) during high-speed data transfer.
- The DS4266 provides the tight duty cycle (48%/52%) demanded by high-performance, DDR memory applications.
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SUNNYVALE, CA—March 5, 2009—Maxim Integrated Products (NASDAQ: MXIM) introduces the DS4266, a 266MHz clock oscillator specifically designed for DDR memory applications. This device guarantees an extremely tight duty-cycle output of 48%/52%, and delivers RMS jitter of less than 1psRMS (12kHz to 20MHz) and cycle-to-cycle jitter of ±7.5ps (typ). It thus increases system-timing margins and enables an extremely low bit-error rate (BER) during data transfer at very high speeds. The DS4266's superb duty-cycle and jitter performance make it ideal for the most demanding DDR memory applications.
The DS4266 boasts a 55% smaller footprint than traditional SAW-based and third-overtone crystal oscillator designs, which generally are not specified for duty cycles better than 48%/52%. The DS4266 is a low-noise, LC PLL-based oscillator that is fabricated using Maxim's proprietary SiGe process. The design of this crystal oscillator incorporates fundamental AT-cut crystal technology, and does not employ an overtone crystal to achieve the high-frequency output. This unique approach eliminates the spurious modes of operation typically found in third-overtone designs, and improves overall stability over SAW-based oscillators (> ±100ppm). The DS4266 provides extremely low aging (< ±7ppm over 10 years) and exceptional total frequency stability (< ±50ppm) with respect to aging, voltage, temperature, loading, and initial tolerance.
The DS4266 supports LVPECL and LVDS output types. This device is fully specified over the -40°C to +85°C extended temperature range, and is available in a space-saving, 5.0mm x 3.2mm x 1.49mm, 10-pin LCCC surface-mount ceramic package. Prices start at $4.50 (10,000-up, FOB USA). Samples are available to speed designs.
Maxim Integrated Products is a publicly traded company that designs, manufactures, and sells high-performance semiconductor products. The Company reported revenue in excess of $2 billion for fiscal 2008. Maxim was founded over 25 years ago with the mission to deliver innovative analog and mixed-signal engineering solutions that add value to its customers' products. To date, it has developed over 5900 products serving the industrial, communications, consumer, and computing markets. For more information, go to www.maxim-ic.com.
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