VCC1 CMOS Crystal Oscillator VCC1 Description Vectrons VCC1 Crystal Oscillator (XO) is a quartz stabilized square wave generator with a CMOS output. The VCC1 uses a fundamental or 3rd overtone crystal resulting in very low jitter performance, and a monolithic IC which improves reliability and reduces cost. Features Applications Ultra Low Jitter, Fundamental or 3rd OT Crystal Design SONET/SDH/DWDM CMOS Output Crystal Oscillator Ethernet, GE, SynchE Output Frequencies from 1.024 MHz to 190.000 MHz Storage Area Networking 5.0, 3.3, 2.5 or 1.8 V Operation Fiber Channel Output Disable Feature Digital Video Excellent 20ppm temperature stability Broadband Access -10/70C , -40/85C or -55/125C operating temperature Base Stations, Picocells Small Industry Standard Package, 7 x 5 mm Driving A/Ds, D/As, FPGAs Test and Measurement Product is compliant to RoHS directive COTS and fully compatible with lead free assembly Block Diagram V Output DD Crystal Oscillator GND E/D Page1Performance Speci cations Table 1. Electrical Performance, 5V Option Parameter Symbol Minimum Typical Maximum Units Supply 1 Voltage V 4.5 5.0 5.5 V DD Max Voltage -0.7 7 V 2 Current I mA DD 20.000MHz 10 20.001 to 50.000MHz 30 50.001 to 85.000MHz 50 85.001 to 125.000MHz 60 Current, Output Disabled 30 uA Frequency 3 Nominal Frequency f 1.544 125.000 MHz N 4 Stability , (Ordering Option) 20, 25, 32, 50, 100 ppm Outputs 2 Output Logic Levels Output Logic High V 0.9*V V OH DD Output Logic Low V 0.1*V V OL DD Output Logic High Drive I 16 mA OH Output Logic Low Drive I 16 mA OL Load I 15 pF OUT 2 Output Rise /Fall Time t /t ns R F <20.000MHz 8 20.000 to 50.000MHz 5 50.001 to 125.000MHz 2 Output Leakage, Output Disabled I 10 uA Z 2,5 Duty Cycle 45 50 55 % 6 Period Jitter J ps RMS 2.5 Peak-Peak 18 RMS Jitter, 12k-20MHz J 0.5 1 ps Enable/Disable 7 Output Enable/Disable Output Enable V 4.0 V IH Output Disable V 0.8 V IL Disable time t 100 ns D Enable Internal Pull-Up Resistor 100 Kohm Start-Up Time t 10 ms SU Operating Temp, (Ordering Option) T -10/70, -40/85, -55/125 C OP 1 The power supply should have by-pass capacitors as close to the supply and to ground as possible, for example 0.1 and 0.01uF. 2 Parameters are tested with the test circuit shown in Figure 1. 3 See Standard Frequencies and Ordering Information tables for more speci c information. 4 Includes initial accuracy, operating temperature, supply voltage, shock and vibration (not under operation) and 10 years aging. 5 Duty Cycle is measured as On Time/Period, see Fig 2. 6 Broadband Period Jitter measured using a LeCroy Wavemaster 8600A, 90K samples, see Application Note for Typical Phase Noise and Jitter Performance. 7 The Output is Enabled if the Enable/Disable is left open. Page2