CRYSTAL CLOCK OSCILLATORS Data Sheet 0105C Rev. F Differential Positive ECL (DPECL) Fast Edge 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 253°C 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 • 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 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 0105C CRYSTAL CLOCK OSCILLATORS Rev. F 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 Typical ----------------------------------------- Max 250.0MHz 55/45% 1.70V 2.56V 600 psec +200 psec 3 psec ----0.8V +100ppm Typical 3.3V ----- Max 3.45V 80 mA --------------------- ±50.0 mA 70°C 125°C 276 mW 300°C 2 ms 10 ms General Characteristics Parameter Supply Voltage Supply Current Symbol VCC ICC 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 -----0°C TS -----55°C --------PD TL Soldering, 10 sec. ----50 Ohm to VCC-2V or Thevenin Equivalent, Bias Required --------tS 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 300°C 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 Input Voltage Code Specification A 3.3V 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