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) sj-a2870 series description the sj-a2870 series of quartz crystal oscillato rs provide mecl 10k and 10kh series compatible signals in a ceramic smd package. systems designers may now specify space-saving, cost-effective packaged pecl oscillators to meet their timing requirements. features ? wide frequency range?18.0mhz to 250.0mhz ? user specified tolerance available ? space-saving alternative to discrete component oscillators ? high shock resistance, to 3000g ? 3.3 volt operation ? metal lid electrically connected to ground to reduce emi ? mecl 10k and 10kh series compatible output on pin 3, complement on pin 1 ? cots/dual use ? low jitter - wavecrest jitter characterization available ? high reliability - nel halt/hass qualified for crystal oscillator start-up conditions ? 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 leads - solder dipped leads available upon request ? rohs compliant, lead free construction (unless solder dipped leads are supplied ) electrical connection pin connection 1 output complement 2 v ee /ground 3 output 4 v cc crystal clock oscillators data sheet 9938a rev. s
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 sj-a2870 series continued differential positive ecl (dpecl) operating conditions and output characteristics electrical characteristics parameter symbol conditions min typical max frequency ----- ----- 18.0mhz ----- 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 ----- 1.0 ns 1.5 ns tpd (4) ----- ----- -0.5 ns ----- +0.5 ns jitter, rms (3) ----- ----- ----- ----- 3 psec 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 3.3v5% 3.135v 3.3v 3.465v 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 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-st d-202, method 213, condition e thermal shock per mil-std- 883, method 1011, condition a vibration 0.060" double amplitude 10 hz to 55 hz, 35g?s 55hz to 2000 hz hermetic seal leak rate less than 1 x 10 -8 atm.cc/sec of helium esd sensitivity human body model per on semiconductor 10kh series ecl: 500v min . 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. rms jitter bandwidth of 12khz to 20mhz. 4) tpd is phase shift between the falling edge of pin 3 at v cc -1.29v and rising edge of pin 1 at v cc -1.29v. rev. s crystal clock oscillators sj - a 287x - freq package code tolerance/performance sj 4 j lead 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 9938a
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 sj-a2870 series continued max reflow profile crystal clock oscillators data sheet 9938a rev. s
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