CRYSTAL CLOCK OSCILLATORS Data Sheet 0306A Rev. P Differential Positive ECL (DPECL) SD-B2980 Series Description The SD-B2980 Series of quartz crystal oscillators provide DPECL compatible signals. Systems designers may now specify space-saving, cost-effective packaged PECL oscillators to meet their timing requirements. Features • Wide frequency range–60.0MHz to 312.5MHz • User specified tolerance available • Space-saving alternative to discrete component oscillators • High shock resistance, to 1000g • 2.5 volt operation • Overtone technology • High Reliability - NEL HALT/HASS qualified for crystal oscillator start-up conditions • Wavecrest jitter characterization available • High Q Crystal actively tuned oscillator circuit • No internal PLL avoids cascading PLL problems • Power supply decoupling internal • Metal lid electrically connected to ground to reduce EMI • Gold plated pads • RoHS Compliant, Lead Free Construction Electrical Connection Pin Connection 1 2 3 4 5 6 Enable/Disable N.C. VEE /Ground Output /Output VCC 357 Beloit Street, P.O. Box 457, Burlington, WI 53105-0457 U.S.A. Phone 262/763-3591 FAX 262/763-2881 Email: [email protected] www.nelfc.com Data Sheet 0306A CRYSTAL CLOCK OSCILLATORS Rev. P SD-B2980 Series Continued Differential Positive ECL (DPECL) Operating Conditions and Output Characteristics Electrical Characteristics Parameter Frequency Duty Cycle Logic 0 (2) Logic 1(2) Rise & Fall Time TPD(6) Jitter, RMS(3) Enable Voltage(4) Disable Voltage Frequency Stability (1) Symbol Conditions Min --------60.0MHz 45/55% ----@ VCC-1.29V VOL --------VOH ----VCC-1.025V tr,tf 20-80%VO with 50 ohm load to VCC-2V -------------200 psec ----------------with VEE = 0V 1.6V ----with VEE = 0V ----dF/F Overall conditions including: -100ppm voltage, calibration, temp., 10 yr aging, shock, vibration Typical ----------------------------------------- Max 312.5MHz 55/45% VCC-1.62V ----700 psec +200 psec 1 psec ----0.4V +100ppm Typical 2.5V ----- Max 2.625V 80 mA --------------------- ±50.0 mA 70°C 125°C 210 mW 253°C 2 ms 10 ms General Characteristics Parameter Supply Voltage(5) Supply Current Symbol VCC ICC Output current Operating temperature Storage temperature Power Dissipation Solder temperature Load Start-up time Conditions Min ----2.375V 50 ohm termination 0.0 mA To 2.00V below VCC IO Low level Output Current 0.0 mA TA -----0°C -----55°C TS PD --------4 minutes ----TL 50 Ohm to VCC-2V or Thevenin Equivalent, Bias Required tS --------- Environmental and Mechanical Characteristics Mechanical Shock Thermal Shock Vibration Hermetic Seal Per MIL-STD-202, Method 213, Condition E Per MIL-STD-883, Method 1011, Condition A 0.060" double amplitude 10 Hz to 55 Hz, 35g’s 55Hz to 2000 Hz Leak rate less than 1 x 10 -8 atm.cc/sec of helium Footnotes: 1) Standard frequency stability (±20,±25,±50ppm & others available) 2) VOL, VOH, referenced to ground (VEE) with VCC = 2.5V 3) Jitter performance is frequency dependent. Please contact factory for full Wavecrest characterization. RMS jitter bandwidth of 12kHz to 20MHz. 4) Open to enable pin also enables the output. 5) Internal high frequency power source decoupling. 6) Tpd is phase shift between the falling edge of pin 4 at 2.0V and the rising edge of pin 5 at 2.01V. Creating a Part Number SD - B298X - FREQ Package Code SD 6 pad 5x7mm SMD Input Voltage Code Specification A 3.3V B 2.5V 5V Tolerance/Performance 0 ±100ppm 0-70°C 1 ±50ppm 0-70°C 7 ±25ppm 0-70°C 9 Customer Specific A ±20ppm 0-70°C B ±50ppm -40 to +85°C C ±100ppm -40 to +85°C 357 Beloit Street, P.O. Box 457, Burlington, WI 53105-0457 U.S.A. Phone 262/763-3591 FAX 262/763-2881 Email: [email protected] www.nelfc.com