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VS-509 Dual Frequency Voltage Controlled Saw Oscillator (VCSO)
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The VS-509 is a Voltage Controlled SAW Oscillator that operates at the fundamental frequency from one of the two internal SAW filters. The SAW filters are high-Q Quartz devices that enable the circuit to achieve low phase jitter performance over a wide operating temperature range. A divider circuit is deployed for output frequencies less than 600 MHz. The selectable dual oscillator is housed in a hermetically sealed leadless surface mount package and offered on tape and reel. It has a tri-state Frequency Select function that provides one of three conditions: Frequency 1, Output Disable, or Frequency 2.


  • Industry Standard Package, 9.1 x 13.8 x 3.1 mm
  • 5th Generation ASIC Technology for Ultra Low Jitter
    125 fs-rms (fN = 622.08 MHz, 12 kHz to 20 MHz)
    120 fs-rms (fN = 622.08 MHz, 50 kHz to 80 MHz)
  • Output Frequencies from 150 MHz to 1.00 GHz
  • Spurious Suppression, 90 dBc Typical
  • 3.3V Supply Voltage
  • LVPECL or LVDS Output Configurations
  • Tri-State Frequency Select (F1, OD, F2)
  • Compliant to EC RoHS Directive


  • OTN (Optical Transport Network)
  • 10GFC (Gigabit Fibre Channel)
  • 10GbE (Gigabit Ethernet)
  • 40GbE & 100GbE
  • Synchronous Ethernet
  • ITU-T G.709/Y.1331
  • INCITS 364-2003
  • IEEE 802.3ae
  • IEEE 802.3ba
  • ITU-T G.8261
  • GR-253-CORE
  • IEEE 802.16