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| www..com SK-A2910 Series Differential Positive ECL (DPECL) SK-A2910 Series Rev H Frequency Range: 100.0 MHz to 320.0 MHz Description The SK-A2910 Series of quartz crystal oscillators provide DPECL Fast Edge compatible signals. This device is to operate using positive voltage and uses multiple ground pins for improved signal integrity. This device is intended to operate on positive voltage for PECL applications. Features * High Reliability - NEL HALT/HASS qualified for crystal oscillator start-up conditions * Low jitter - Wavecrest jitter characterization available * Wide frequency range--100.0 MHz to 320.0 MHz * User specified tolerance available * Case at electrical ground * Will withstand vapor phase temperatures of 253C for 4 minutes maximum * All metal, resistance weld, hermetically sealed package * High shock resistance, to 1500g * Overtone technology * High Q crystal actively tuned oscillator circuit * Power supply decoupling internal * Dual ground plane for added stability * No internal PLL avoids cascading PLL problems * High frequencies due to proprietary design * RoHS Compliant, Lead Free Construction Size, mm 20 x 13 I/O 8 pin (14 pin) SMD Gull Wing Supply Voltage 3.3V / 5V Creating a Part Number SK - A291X - FREQ Package Code HK Leaded 8 pin (14 pin) SK 8 pin (14 pin) SMD Gull Wing Input Voltage Code Specification A 3.3 V 5V Tolerance/Performance 0 100 ppm 0-70C 1 50 ppm 0-70C 7 25 ppm 0-70C 9 Customer Specific A 20 ppm 0-70C B 50 ppm -40 to +85C C 100 ppm -40 to +85C Drawing Specifications Electrical Connection Pin 1 2 6 7 8 9 13 14 For the most up to date specifications on each NEL product, log on to our website-- www.nelfc.com Dimensions shown in inches and millimeters. Connection VCC VEE Case VEE Case Output /Output VEE Case VEE Case Enable/Disable 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 Differential Positive ECL (DPECL) SK-A2910 Series Rev H Frequency Range: 100.0 MHz to 320.0 MHz Operating Conditions and Output Characteristics Electrical Characteristics Parameter Symbol Frequency Duty Cycle Logic 0(2) Logic 1(2) Rise & Fall Time Jitter, RMS(3) Enable Voltage(4) Disable Voltage Frequency Stability(1) -- -- VOL VOH tr, tf -- -- -- dF/F Conditions Min Typical -- -- -- -- 350 psec -- -- -- -- Max 320.0 MHz 55/45% VCC -1.620 V VCC -0.88 V 600 psec 3 psec 1.0 V VCC +100 ppm -- 100.0 MHz @50% points 45/55% -- VCC -1.810 V -- VCC -1.025 V -- 20-80% VO, with 50 ohm load to VCC -2V -- -- with VEE = 0V 0V 3.0 V with VEE = 0V Overall conditions including: -100 ppm voltage, calibration, temp., 10 yr aging, shock, vibration General Characteristics Parameter Symbol Conditions Min Typical 3.3 V -- -- -- -- -- 2 ms Max 3.465 V 120 mA 50.0 mA 70C 125C 300C 10 ms Supply Voltage VCC -- 3.135 V 50 ohm termination to 2.00 V below VCC 0.0 mA Supply Current ICC Output Current IO Low level Output Current 0.0 mA -- 0C Operating Temperature TA Storage Temperature TS -- -55C Input: Logic High (ECL) - Disables VEE or Open - Enables Soldering, 10 sec. -- Lead Temperature TL Load 50 ohm to VCC-2V or Thevenin Equivalent, Bias Required -- -- Start-up Time 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 55 Hz 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, 50 ppm & others available). 2) VOL, VOH, referenced to ground. 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. Test Circuit 1 8 7 2,6,9,13 Test Circuit uses a split supply of +2V and -1.3V for ease of testing. |
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