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) 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 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 ? 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 enable/disable 2 n.c. 3 v ee /ground 4 output 5 /output 6 v cc crystal clock oscillators data sheet 0105c rev. f
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 sd-a2920 series continued differential positive ecl (dpecl) fast edge operating conditions and output characteristics electrical characteristics parameter symbol conditions min typical max frequency ----- ----- 75.0mhz ----- 250.0mhz duty cycle ----- @ v cc -1.29v 45/55% ----- 55/45% logic 0 (2) v ol ----- 1.35v ----- 1.70v logic 1 (2) v oh ----- 2.28v ----- 2.56v rise & fall time tr,tf 20-80%v o with 50 ohm load to v cc -2v ----- ----- 600 psec t pd (4) ----- ----- -200 psec ----- +200 psec jitter, rms (3) ----- ----- ----- ----- 3 psec enable voltage (5) ----- with v ee = 0v 2.0v ----- ----- disable voltage ----- with v ee = 0v ----- ----- 0.8v frequency stability (1) df/f overall conditions including: -100ppm ----- +100ppm voltage, calibration, temp., 10 yr aging, shock, vibration general characteristics parameter symbol conditions min typical max supply voltage v cc ----- 3.15v 3.3v 3.45v supply current i cc 50 ohm termination 0.0 ma ----- 80 ma to 2.00v below v cc output current i o low level output current 0.0 ma ----- 50.0 ma operating temperature t a ------ 0c ----- 70c storage temperature t s ----- -55c ----- 125c power dissipation p d ----- ----- ----- 276 mw lead temperature t l soldering, 10 sec. ----- ----- 300c load 50 ohm to v cc -2v or thevenin equivalent, bias required start-up time t s ----- ----- 2 ms 10 ms environmental and mechanical characteristics mechanical shock per mil-std-202, method 213, condition e thermal shock per mil-std-833, method 1011, condition a vibration 0.060" double amplitude 10 hz to 55 hz, 35g?s 55hz to 2000 hz soldering condition 300c for 10 seconds hermetic seal leak rate less than 1 x 10 -8 atm.cc/sec of helium footnotes: 1) standard frequency stability (20,25,50ppm & others available) 2) v ol , v oh , referenced to ground (v ee ) with v cc = 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. rev. f crystal clock oscillators sd - a 292x - freq package code tolerance/performance sd 6 pad 5x7mm smd 0 100ppm 0-70c 1 50ppm 0-70c 7 25ppm 0-70c input voltage 9 customer specific code specification a 20ppm 0-70c a 3.3v b 50ppm -40 to +85c 5v c 100ppm -40 to +85c creating a part number data sheet 0105c
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