High-frequency miniature crystal oscillators provide low-jitter

Maxim Integrated Products has introduced DS4-XO series of crystal oscillators that support frequency operation from 75 MHz to 622.08 MHz. These miniature crystal oscillators are available in a small 5 mm x 3.2 mm package. And provide jitter performance of less than 1 ps (rms) over the -40 °C to +85 °C extended temperature range. Manufactured using fundamental AT-cut crystal technology with no overtone, the DS4-XO series integrates a low-noise PLL-based oscillator designed in Maxim's proprietary SiGe process. Fifty-five percent smaller than competitive solutions, the DS4-XO series is aimed at space-constrained designs used in Fibre Channel, Ethernet, 10G Ethernet, SONET/SDH, InfiniBand(R), GPON, BPON, PCI Express(R), and SAS/SATA applications.

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The series' miniature package incorporates thermally managed design techniques specifically targeted for high-current (65 mA to 75 mA, typ), high-frequency (100 MHz and greater), differential-output (LVDS, LVPECL, HCSL) applications. According to Maxim, LVDS and LVPECL output options are available for all frequencies except the 100 MHz version. This frequency is generally used in PCI Express applications and is provided with (differential) HCSL output type, said Maxim.

In addition, it delivers a much higher degree of frequency stability (±40 ppm) over the extended temperature range. And provides extremely low (±7 ppm) aging over 10 years.

The standard frequencies for the DS4-XO series of crystal oscillators are: 77.76 MHz(DS4776), 106.25 MHz (DS4106), 125 MHz (DS4125), 155.52 MHz (DS4155), 156.25 MHz (DS4156), 160 MHz (DS4160), 212.50 MHz (DS4212), 311.04 MHz (DS4311), 312.50 MHz (DS4312), 425 MHz (DS4425), and 622.08 MHz (DS4622).

Housed in 10-Pin LCCC ceramic package, prices start at $7.39 in 1000 pieces and up.

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© 2012 Penton Media Inc.


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