The improved phase noise and reduced jitter of the XpressO-Ultra Series enables the oscillators to be effectively used in a variety of modern high-speed data applications over an extended operating temperature range of-40°C to +85°C. Phase jitter (12 kHz to 20 MHz) is reduced to to 250 fsec typical compared to 750 fsec typical of the traditional XpressO.
These configurable oscillators offer a combination of competitive pricing and improved performance, with availability in days for production runs. As an extension to Fox’s XpressO oscillator technology, XpressO-Ultra incorporates the same noise-reducing ASICs—developed exclusively by Fox—that offer the ability to select output type and supply voltage.
The first configuration released in the XpressO-Ultra series is a 3.3V LVPECL version with stabilities of either ±50 ppm or ±100 ppm in a standard 5 x 3.2 mm package. These oscillators are suitable for data transmission applications with rigorous requirements such as 40 GbE and 100 GbE WAN/LANs, 16 Gb and 32 Gb fibre channel, 6 Gb/sec and 12 Gb/sec SAS/SATA storage and high speed OTNs. Different versions of this new oscillator family are planned for the future, including alternate output types as well as various package sizes and voltages.