ON Semiconductor has expanded its PureEdge family of high accuracy crystal oscillator (XO) clock modules. The new high precision devices provide total frequency stability of ±50ppm and will meet clock generation requirements in next generation low-voltage differential signaling (LVDS) and low-voltage positive emitter coupled logic (LVPECL) designs.
The NBXzzzzzz series of single- and dual-frequency modules provide ultra low jitter and ultra low phase noise LVDS and LVPECL differential outputs respectively. Applications include frequency control and high accuracy clock trees in high speed LAN and WAN networking equipment, telecom basestations, storage systems and high-end computing platforms.
All of the new modules use a low frequency, high Q fundamental mode crystal and analog Phase Lock Loop (PLL) multiplier to provide the high accuracy single- or dual-output frequency. Typical RMS phase jitter is rated at just 0.5ps when output Single Side Band (SSB) is integrated between 12kHz and 20MHz. Output frequency options for single frequency modules are 161.13MHz; 175MHz; 187.5MHz; 340MHz; 425MHz; 622.08MHz. Dual frequency modules offer user selectable output frequency of 106.25MHz/212.5MHz; 125MHz/250MHz; 155.52MHz/311.04MHz; 156.25MHz/312.50MHz; 200MHz/400MHz. As a result, designers can choose modules that are optimized for a variety of specific protocols including Ethernet, Gigabit Ethernet, 1x/2x FibreChannel, SATA, SONET/SDH and PCIe.
The devices operate from a 2.5V and 3.3V input voltage and are supplied in a hermetically sealed 5x7x1.9mm ceramic CLCC-6 SMD package.
ON Semiconductor
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