SR-A29B0 Series Differential Positive ECL (DPECL) SR-A29B0 Series Rev G Frequency Range: 250.0 MHz-1.7 GHz Description The SR-A29B0 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. Size, mm 9 x 14 I/O 8 pad Supply Voltage 3.3V / 2.5V Features • Wide frequency range – 250.0MHz to 1.7GHz • User specified tolerance available • Will withstand SMD reflow temperatures of 183°C for 4 minutes maximum • High shock resistance, to 1000g • Patent Pending, harmonic multiplication for extremely low jitter • High frequency output eliminates the need for PLL multiplication • Stabilities over temperatures as low as ±20ppm eliminates SAW oscillator temperature problems • High Reliability - NEL HALT/HASS qualified for crystal oscillator start-up conditions • Cover connected to ground • 3.3V and 2.5V versions available Creating a Part Number SR - A29BX - FREQ Package Code SR 8 pad 9x14 mm SMD Input Voltage Code Specification A 3.3 V B 2.5 V Tolerance/Performance 0 ±100 ppm 0-70°C 1 ±50 ppm 0-70°C 7 ±25 ppm 0-70°C 9 Customer Specific A ±20 ppm 0-70°C B ±50 ppm -40 to +85°C C ±100 ppm -40 to +85°C Drawing Specifications For the most up to date specifications on each NEL product, log on to our website—www.nelfc.com Electrical Connections Pin Connection 1 VCC 2 Ground 3 NC or Ground 4 Q Output 5 /Q Output 6 Ground 7 Ground 8 Enable Recommended Board Layout Dimensions shown in inches (mm). The metallic center pad was designed for mechanical support. Grounding of this pad is optional. It measures 0.088 x 0.190 NOM (2.24 x 4.83 NOM). 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 Differential Positive ECL (DPECL) SR-A29B0 Series Rev G Frequency Range: 250.0 MHz-1.7 GHz Operating Conditions and Output Characteristics Electrical Characteristics Parameter Symbol Conditions Min Frequency — — 250.0MHz Duty Cycle — @ 50% points 45/55% Logic 0 (1) VOL — VCC -1.810V Logic 1(1) VOH — VCC -1.025V tr, tf 20-80%VO with 50 ohm load to VCC -2V — Rise & Fall Time RMS Random Jitter(5) — — — Enable Voltage(2) — with VEE=0V 0V Disable Voltage — with VEE=0V 3.0V Frequency Stability(3) dF/F Overall conditions including: -100ppm voltage, calibration, temp., 10 yr aging, shock, vibration Phase Noise(4) — @100Hz — — @1kHz — — @10kHz — — @100kHz — — @1MHz — — @10MHz — General Characteristics Parameter Symbol Conditions Min Supply Voltage VCC — 3.135 V Supply Current ICC 50 ohm termination 0.0 mA to 2.00V below VCC Output Current IO Low level Output Current 0.0 mA Operating Temperature TA — 0ºC Storage Temperature T S — -55ºC Input: Logic High (ECL) - Disables VEE or Open - Enables Lead Temperature TL Soldering, 10 sec. — Load 50 ohm to VCC -2V or Thevenin Equivalent, Bias Required Start-up Time tS — — Environmental and Mechanical Characteristics Mechanical ShockPer MIL-STD-202, Method 213, Condition E Thermal ShockPer MIL-STD-833, Method 1011, Condition A Vibration 0.060" double amplitude 10 Hz to 55 Hz, 35g’s 55 Hz to 2000 Hz Soldering Condition 300ºC for 10 seconds Footnotes: 1) VOL, VOH, referenced to ground. 2) Open to enable pin also enables the output. 3) Standard frequency stability (others available). 4) Phase Noise characterization available. Phase Noise is frequency dependent, phase noise specification references a 1.0GHz part. 5) RMS jitter bandwidth of 12kHz to 20MHz. Typical Max — — — — 350 psec — — — — 1.7GHz 55/45% VCC -1.620V VCC -0.880V 600 psec 1 psec 1.0V VCC +100ppm — — — — — — -80 dBc/Hz -115 dBc/Hz -130 dBc/Hz -130 dBc/Hz -135 dBc/Hz -135 dBc/Hz Typical Max 3.3 V — 3.465 V 120 mA — — — ±50.0 mA 70ºC 125ºC — 300ºC 2 ms 10 ms