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| CRYSTAL CLOCK OSCILLATORS Differential Positive ECL (DPECL) Fast Edge Data Sheet 0105C Rev. F SD-A2920 Series Description The SD-A2920 Series of quartz crystal oscillators provide DPECL Fast Edge compatible signals. Systems designers may now specify space-saving, cost-effective packaged PECL oscillators to meet their timing requirements. Features * Wide frequency range-75.0MHz to 250.0MHz (Preliminary from180+MHz to 250MHz) * User specified tolerance available * Will withstand vapor phase temperatures of 253C for 4 minutes maximum * Space-saving alternative to discrete component oscillators * High shock resistance, to 1000g * 3.3 volt operation * Metal lid electrically connected to ground to reduce EMI Electrical Connection Pin 1 2 3 4 5 6 Connection Enable/Disable N.C. VEE /Ground Output /Output VCC * Fast rise and fall times <600 ps * Low Jitter - Wavecrest jitter characterization available * High Reliability - NEL HALT/HASS qualified for crystal oscillator start-up conditions * Overtone technology * High Q Crystal actively tuned oscillator circuit * Power supply decoupling internal * No internal PLL avoids cascading PLL problems * High frequencies due to proprietary design * Gold plated pads 357 Beloit Street, P.O. Box 457, Burlington, WI 53105-0457 U.S.A. Phone 262/763-3591 FAX 262/763-2881 Email: nelsales@nelfc.com www.nelfc.com CRYSTAL CLOCK OSCILLATORS SD-A2920 Series Continued Differential Positive ECL (DPECL) Fast Edge Operating Conditions and Output Characteristics Electrical Characteristics Parameter Frequency Duty Cycle Logic 0 (2) Logic 1(2) Rise & Fall Time Tpd (4) Jitter, RMS(3) Enable Voltage(5) Disable Voltage Frequency Stability (1) Symbol Conditions Min --------75.0MHz 45/55% ----@ VCC-1.29V VOL ----1.35V VOH ----2.28V tr,tf 20-80%VO with 50 ohm load to VCC-2V -------------200 psec ----------------with VEE = 0V 2.0V --------with VEE = 0V dF/F Overall conditions including: -100ppm voltage, calibration, temp., 10 yr aging, shock, vibration Data Sheet 0105C Rev. F Typical ----------------------------------------- Max 250.0MHz 55/45% 1.70V 2.56V 600 psec +200 psec 3 psec ----0.8V +100ppm General Characteristics Parameter Supply Voltage Supply Current Output current Operating temperature Storage temperature Power Dissipation Lead temperature Load Start-up time Conditions Min ----3.15V 50 ohm termination 0.0 mA To 2.00V below VCC IO Low level Output Current 0.0 mA TA -----0C TS -----55C --------PD TL Soldering, 10 sec. ----50 Ohm to VCC-2V or Thevenin Equivalent, Bias Required --------tS Symbol VCC ICC Typical 3.3V ------------------------2 ms Max 3.45V 80 mA 50.0 mA 70C 125C 276 mW 300C 10 ms Environmental and Mechanical Characteristics Mechanical Shock Thermal Shock Vibration Soldering Condition Hermetic Seal Per MIL-STD-202, Method 213, Condition E Per MIL-STD-833, Method 1011, Condition A 0.060" double amplitude 10 Hz to 55 Hz, 35g's 55Hz to 2000 Hz 300C for 10 seconds 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 = 3.3V 3) Jitter performance is frequency dependent. Please contact factory for full Wavecrest characterization. 4) Tpd is phse shift between the falling edge of pin 4 at 2.0V and the rising edge of pin 5 at 2.01V. 5) Open to enable pin also enables the output. Creating a Part Number SD - A292X - FREQ Package Code SD 6 pad 5x7mm SMD Tolerance/Performance 0 100ppm 0-70C 1 50ppm 0-70C 7 25ppm 0-70C 9 Customer Specific A 20ppm 0-70C B 50ppm -40 to +85C C 100ppm -40 to +85C Input Voltage Code Specification A 3.3V 5V 357 Beloit Street, P.O. Box 457, Burlington, WI 53105-0457 U.S.A. Phone 262/763-3591 FAX 262/763-2881 Email: nelsales@nelfc.com www.nelfc.com |
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