VC-826 HCSL, LVPECL, LVDS Crystal Oscillator VC-826 Description Vectrons VC-826 Crystal Oscillator is a quartz stabilized, di erential output oscillator, operating o a 2.5 or 3.3 volt power supply in a hermetically sealed 3.2x2.5 mm ceramic package. Features Applications Ultra Low Jitter Performance, 3rd OT or Fundamental Crystal Design Ethernet, GbE, Synchronous Ethernet 20MHz -170MHz Output Frequencies Fiber Channel Low Power Enterprise Servers Excellent Power Supply Rejection Ratio Telecom Enable/Disable Clock source for A/Ds, D/As 3.3 or 2.5V operation Driving FPGAs -10/70C or -40/85C Operation Test and Measurement Hermetically Sealed 3.2x2.5 mm Ceramic Package PON Medical Product is compliant to RoHS directive COTS and fully compatible with lead free assembly Block Diagram Complementary Output Output V DD Voltage Regulator Crystal Oscillator E/D or NC E/D or NC GND Page1Performance Speci cations Table 1. Electrical Performance, LVPECL Option Parameter Symbol Min Typical Maximum Units 1 Voltage V 3.135 3.3 3.465 V DD 2.375 2.5 2.625 V 2 Current , 3.3V I 45 mA DD 2.5V 42 mA Frequency Nominal Frequency f 20 170 MHz N 3 Stability (Ordering Option) 25, 50 or 100 ppm Outputs 2 Output Logic Levels Output Logic High V V -1.025 V -0.880 V OH DD DD Output Logic Low V V -1.810 V -1.620 V OL DD DD 2 Output Rise and Fall Time t /t 500 ps R F Load 50 ohms into V -1.3V DD 4 Duty Cycle 45 55 % 5 Phase Noise, 3.3V, 100MHz 10Hz -70 dBc/Hz 100Hz -100 1kHz -126 10kHz -140 100kHz -146 1MHz -149 20MHz -157 40MHz -157 5 Jitter , 100MHz 12kHz -20MHz J 170 200 fs Enable/Disable 6 Outputs Enabled V 0.7*V V IH DD Outputs Disabled V 0.3*V V IL DD Disable Time t 200 ns D Enable/Disable Leakage Current 200 uA Start-Up Time t 10 ms SU Operating Temp. (Ordering Option) T -10/70 or -40/85 C OP Package Size 3.2 x 2.5 x 1.05 mm 1. The VC-826 power supply pin should be ltered, eg, a 10uf, 0.1uf and 0.01uf capacitor. 2. Figure 1 de nes the test circuit and Figure 2 de nes these parameters. 3. Includes calibration tolerance, operating temperature, supply voltage variations, aging and IR re ow. 4. Duty Cycle is de ned as the On/Time Period. 5. Measured using an Agilent E5052 Signal Source Analyzer at 25 C. 6. Outputs will be Enabled if Enable/Disable is left open. t t R F V *0.8 AMP Cross Point V AMP V *0.2 AMP On Time Period Figure 2. Figure 1. Page2