creating a part number sk - a 291x - freq p ackage code hk leaded 8 pin (14 pin) sk 8 pin (14 pin) smd gull wing input voltage code s pecification a 3.3 v 5 v t olerance/performance 0 ?00 ppm 0--0? 1 ?0 ppm 0--0? 7 ?5 ppm 0--0? 9 customer specific a 20 ppm 0-70 c b 50 ppm -40 to +85 c c ?00 ppm --0 to +85? description the sk-a2910 series of quartz crystal oscillators provide dpecl fast edge compatible signals. this device i s 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 avail- able ? wide frequency range00.0 mhz to 320.0 mhz ? user specified tolerance available ? case at electrical ground ? will withstand vapor phase temperatures of 253 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 sk-a2910 series size, mm 20 x 13 i/o 8 pin (14 pin) smd gull wing supply voltage 3.3v / 5v f or the most up to date speci - fications on each nel prod- uct, log on to our website www.nelfc.com differential positive ecl (dpecl) sk-a2910 series rev h frequency range: 100.0 mhz to 320.0 mhz drawing specifications e lectrical connection pin connection 1v cc 2 v ee case 6v ee case 7 output 8 /o utput 9 v ee case 13 v ee case 14 enable/disable d imensions sho wn in inches and millimeters. 357 b eloit 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 conditions min typical max frequency 100.0 mhz 320.0 mhz duty cycle @50% points 45/55% 55/45% logic 0 (2) v o l c c -1.810 v v c c -1.620 v logic 1 (2) v oh cc -1.025 v v cc -0.88 v rise & fall time t r , t f 20-80% v o , with 50 ohm load to v c c -2v 350 psec 600 psec jitter, rms (3) 3 psec enable voltage (4) with v ee = 0v 0 v 1.0 v disable voltage with v e e = 0v 3.0 v v c c frequency stability (1) df/f overall conditions including: -100 ppm +100 ppm voltage, calibration, temp., 10 yr aging, shock, vibration general characteristics parameter symbol conditions min typical max s upply voltage v cc 3.135 v 3.3 v 3.465 v supply current i cc 50 ohm termination to 2.00 v below v cc 0.0 ma 120 ma o utput c urr ent i o lo w lev el o utput current 0.0 ma ?0.0 ma operating temperature t a o c70 o c storage temperature t s -55 o c 125 o c input: logic high (ecl) - disables v ee or o pen - e nables lead temperature t l soldering, 10 sec. 300 o c load 50 ohm to v c c -2v or thev enin e quiv alent, bias required start-up time t s 2 ms 10 ms e nvir onmental and m echanical characteristics m echanical 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, 35gs 55 hz to 2000 hz s oldering condition 300 o c for 10 seconds h ermetic seal leak rate less than 1 x 10 - 8 atm.cc/sec of helium f ootnotes: 1) s tandar d fr equency stability ( ?0, ?5, ?0 ppm & others available). 2) v ol , v oh , 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. t est c ircuit 1 7 8 2,6,9,13 test circuit uses a split supply of +2v and -1.3v for ease of testing.
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