Description
The VX-721 is a voltage controlled crystal oscillator, VCXO, based upon Vectron’s HPLL high performance phase locked loop frequency multiplier ASIC that combines key digital synthesis techniques with VI’s proven core analog technology blocks. A standard low frequency crystal provides the reference to the fractional-n synthesizer so that virtually any frequency between 10MHz and 1200 MHz can be factory programmed allowing quick turn manufacturing.

FEATUREs
• Industry Standard Package, 5.0 x 7.0 x 1.8 mm
• HPLL High Performance PLL ASIC
• Jitter < 500 fs-rms (12 kHz to 20 MHz)
• Output Frequencies from 10 MHz to 1200 MHz
• Spurious Suppression, 70 dBc Typical
• 2.5V or 3.3V Supply Voltage
• LVCMOS, LVPECL or LVDS Output Configurations
• Output Enable
• Compliant to EC RoHS Directive

APPLICATIONs
PLL circuits for clock smoothing and frequency translation
               Description                         Standard
• 1-2-4 Gigabit Fibre Channel    INCITS 352-2002
• 10 Gigabit Fibre Channel        INCITS 364-2003
• 10GbE LAN / WAN                 IEEE 802.3ae
• Synchronous Ethernet            ITU-T G.8262
• OC-192                                   ITU-T G.709
• SONET / SDH                        GR-253-CORE Issue4