lvpecl uhf clock (xo) sd-a29kxxx series (3.3 volt) sd-b29kxxx series (2.5 volt) description the sd-x29kxxx series of quartz crystal oscillators provides ultra high frequency with lvpecl complementary outputs. the outputs can be tri-stated for test automation or combining multiple clocks. the device is based on low noise analog harmonic multiplication for higher frequencies, and packaged in a miniature, low profile leadless ceramic smd package with 6 gold plated pads. applications and features ? wide frequency range ? 38.0mhz to 640.000mhz ? fiber channel; 10 gbe; infiniband; network processors; soho routing ? high reliability - nel halt/hass qualified for crystal oscillator start-up conditions ? low phase noise, low jitter ? high shock resistance, to 1000g ? ultra high frequency ? tight frequency stability - 20 ppm overall available ? grounded lid and internal by-pass capacitor reduce emi ? rohs compliant, lead free construction 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 data sheet 0628b rev. b sd - x 29k x x x - freq package code overall frequency stability, ppm sd 6 pad 5x7mm smd e 20 f 25 input voltage g 50 a 3.3v5% h 100 b 2.5v5% 9 customer specific enable option temperature range, c h enable high a 0 to 50 l enable low b 0 to 70 c -20 to 70 d -40 to 85 9 customer specific creating a part number
sd-x29kxxx series continued lvpecl uhf clock (xo) absolute maximum ratings parameter symbol value unit operating temperature range to -40 to +85 oc storage temperature range tst -50 to +90 oc supply voltage vcc -0.5 to 4.5 v enable/disable voltage ven/dis 0 to vcc v electrical parameters parameter symb conditions, note min typ max unit nominal frequency fo 38 640 mhz supply voltage vcc code a code b 3.135 2.375 3.3 2.5 3.465 2.625 v supply current icc 80 100 ma output logic type lvpec l load output to vcc-2v, or thevenin equivalent 50 ohm output levels voh vol overall vcc- 1.025 vcc- 1.620 v duty cycle (symmetry) at 50% of output voltage swing 45/55 50/50 55/45 % rise/fall time tr/tf 20 to 80, 80 to 20 % 0.5 0.7 ns jitter integrated j integrated from phase noise, 12 khz to 20 mhz, rms 0.3 ps wavecrest characterized random period, <320 m >320 m 2.5 2.5 ps accumul., pk-to-pk <320 m >320 m 30 43 ps deterministic <320 m >320 m 6 18 ps sub-harmonics <320 m >320 m -50 -35 dbc phase noise ( ? f) 212.5 mhz @ 10 hz @100 hz @1 khz @10khz @100khz @>1mhz -65 -95 -125 -140 -145 -148 dbc/hz frequency stability ? f/f overall, including initial calibration, temperature, aging 10 years, shock and vibration see ?creating a part number? not all combinations available, consult factory ppm enable high option pin 2 enabled pin 2 disabled cmos logic 1 or n/c cmos logic 0 0.7 vcc 0 vcc 0.3 vcc v enable low option pin 2 disabled pin 2 enabled cmos logic 1 or n/c cmos logic 0 0.7 vcc 0 vcc 0.3 vcc v 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 rev. b crystal clock oscillators data sheet 0628b
crystal clock oscillators rev. b sd-x29kxxx series continued lvpecl uhf clock (xo) electrical connection pin connection 1 enable/disable 2 n.c. 3 v ee /ground 4 output 5 /output 6 v cc environmental and mechanical characteristics operating temp. range see part # table mechanical shock per mil-std-202, method 213, cond. e thermal shock per mil-std-883, method 1011, cond. a vibration per mil-std-883, method 2007, cond. a hermetic seal leak rate less than 1x10 -8 atm.cc/s of helium soldering conditions see max reflow profile below maximum reflow profile 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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