sr-a29b0 series size, mm 9 x 14 i/o 8 pad supply voltage 3.3v / 2.5v ? 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 features ? wide frequency range C 250.0mhz to 1.7ghz ? user specifed tolerance available ? will withstand smd refow temperatures of 183c for 4 minutes maximum ? high shock resistance, to 1000g ? high reliability - nel halt/hass qualifed for crystal oscillator start-up conditions ? cover connected to ground ? 3.3v and 2.5v versions available differential positive ecl (dpecl) sr-a29b0 series rev g frequency range: 250.0 mhz-1.7 ghz drawing specifcations 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. creating a part number sr - a 29b x - freq package code sr 8 pad 9x14 mm smd input voltage code specifcation a 3.3 v b 2.5 v tolerance/performance 0 100 ppm 0-70c 1 50 ppm 0-70c 7 25 ppm 0-70c 9 customer specifc a 20 ppm 0-70c b 50 ppm -40 to +85c c 100 ppm -40 to +85c for the most up to date specifcations on each nel product, log on to our websitewww.nelfc.com 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). electrical connections pin connection 1 v cc 2 ground 3 nc or ground 4 q output 5 /q output 6 ground 7 ground 8 enable 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
operating conditions and output characteristics electrical characteristics parameter symbol conditions min typical max frequency 250.0mhz 1.7ghz duty cycle @ 50% points 45/55% 55/45% logic 0 (1) v ol v cc -1.810v v cc -1.620v logic 1 (1) v oh v cc -1.025v v cc -0.880v rise & fall time t r, t f 20-80%v o with 50 ohm load to v cc -2v 350 psec 600 psec rms random jitter (5) 1 psec enable voltage (2) with v ee =0v 0v 1.0v disable voltage with v ee =0v 3.0v v cc frequency stability (3) df/f overall conditions including: -100ppm +100ppm voltage, calibration, temp., 10 yr aging, shock, vibration phase noise (4) @100hz -80 dbc/hz @1khz -115 dbc/hz @10khz -130 dbc/hz @100khz -130 dbc/hz @1mhz -135 dbc/hz @10mhz -135 dbc/hz general characteristics parameter symbol conditions min typical max supply voltage v cc 3.135 v 3.3 v 3.465 v supply current i cc 50 ohm termination 0.0 ma 120 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 0 o c 70 o c storage temperature t s -55 o c 125 o c input: logic high (ecl) - disables v ee or open - enables lead temperature t l soldering, 10 sec. 300 o c 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, 35gs 55 hz to 2000 hz soldering condition 300 o c for 10 seconds footnotes: 1) v ol , v oh , 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 specifcation references a 1.0ghz part. 5) rms jitter bandwidth of 12khz to 20mhz. differential positive ecl (dpecl) sr-a29b0 series rev g frequency range: 250.0 mhz-1.7 ghz
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