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the smart timing choice ? the smart timing choice ? sitime corporation 990 almanor avenue, sunnyvale, ca 94085 (408) 328-4400 www.sitime.com rev. 1.06 revised october 3, 2014 SIT9120 standard frequency dif ferential oscillator features applications ? 31 standard frequencies from 25 mhz to 212.5 mhz ? 10gb ethernet, sonet, sata, sas, fibre channel, pci-express ? lvpecl and lvds output signaling types ? 0.6 ps rms phase jitter (random) over 12 khz to 20 mhz bandwidt h ? telecom, networking, instrumentation, storage, servers ? frequency stability as low as 10 ppm ? industrial and extended commercial temperature ranges ? industry-standard packages: 3.2x2 .5, 5.0x3.2 and 7.0x5.0 mmxmm ? for any other frequencies between 1 to 625 mhz, refer to sit912 1 and sit9122 datasheet electrical characteristics parameter and conditions symbol min. typ. max. unit condition lvpecl and lvds, common el ectrical characteristics supply voltage vdd 2.97 3.3 3.63 v 2.25 2.5 2.75 v 2.25 C 3.63 v termination schemes in figures 1 and 2 - xx ordering code output frequency range f 25 C 212.5 mhz see last page for list of standard frequencies frequency stability f_stab -10 C +10 ppm inclusive of initial tolerance, operating temperature, rated po wer supply voltage, and load variations -20 C +20 ppm -25 C +25 ppm -50 C +50 ppm first year aging f_aging1 -2 C +2 ppm 25c 10-year aging f_aging10 -5 C +5 ppm 25c operating temperature range t_use -40 C +85 c industrial -20 C +70 c extended commercial input voltage high vih 70% C C vdd pin 1, oe or st input voltage low vil C C 30% vdd pin 1, oe or st input pull-up impedance z_in C 100 250 k pin 1, oe logic high or logic low, or st logic high 2CCm pin 1, st logic low start-up time t_start C 6 10 ms measured from the time vdd reaches its rated minim um value. resume time t_resume C 6 10 ms in standby mode, measured from the time st pin crosses 50% threshold. duty cycle dc 45 C 55 % contact sitime for tighter duty cycle lvpecl, dc and ac characteristics current consumption idd C 61 69 ma excluding load termination current, vdd = 3.3v or 2.5 v oe disable supply current i_oe C C 35 ma oe = low output disable leakage current i_leak C C 1 ? a oe = low standby current i_std C C 100 ? a st = low, for all vdds maximum output current i_driver C C 30 ma maximum average current drawn from out+ or out- output high voltage voh vdd-1.1 C vdd-0.7 v see figure 1(a) output low voltage vol vdd-1.9 C vdd-1.5 v see figure 1(a) output differential voltage swing v_swing 1.2 1.6 2.0 v see figure 1(b) rise/fall time tr, tf C 300 500 ps 20% to 80%, see figure 1(a) oe enable/disable time t_oe C C 115 ns f = 212.5 mhz - for other frequencies, t_oe = 100ns + 3 period rms period jitter t_jitt C 1.2 1.7 ps f = 100 mhz, vdd = 3.3v or 2.5v C 1.2 1.7 ps f = 156.25 mhz, vdd = 3.3v or 2.5v C 1.2 1.7 ps f = 212.5 mhz, vdd = 3.3v or 2.5v rms phase jitter (random) t_phj C 0.6 0.85 ps f = 156.25 mhz, integration bandwidth = 12 khz t o 20 mhz, all vdds lvds, dc and ac characteristics current consumption idd C 47 55 ma excluding load termination current, vdd = 3.3v or 2.5 v oe disable supply current i_oe C C 35 ma oe = low differential output voltage vod 250 350 450 mv see figure 2
the smart timing choice ? the smart timing choice ? SIT9120 standard frequency differential oscillator rev. 1.06 page 2 of 8 www.sitime.com electrical characteristics (continued) parameter and conditions symbol min. typ. max. unit condition lvds, dc and ac characteristics (continued) output disable leakage current i_leak C C 1 ? a oe = low standby current i_std C C 100 ? a st = low, for all vdds vod magnitude change ? vod C C 50 mv see figure 2 offset voltage vos 1.125 1.2 1.375 v see figure 2 vos magnitude change ? vos C C 50 mv see figure 2 rise/fall time tr, tf C 495 600 ps 20% to 80%, see figure 2 oe enable/disable time t_oe C C 115 ns f = 212.5 mhz - for other frequencies, t_oe = 100ns + 3 period rms period jitter t_jitt C 1.2 1.7 ps f = 100 mhz, vdd = 3.3v or 2.5v C 1.2 1.7 ps f = 156.25 mhz, vdd = 3.3v or 2.5v C 1.2 1.7 ps f = 212.5 mhz, vdd = 3.3v or 2.5v rms phase jitter (random) t_phj C 0.6 0.85 ps f = 156.25 mhz, integration bandwidth = 12 khz t o 20 mhz, all vdds pin description pin map functionality 1 oe input h or open: specified frequency output l: output is high impedance st input h or open: specified frequency output l: device goes to sleep mode. supply current reduces to i_std. 2nc na no connect; leave it floating or connect to gnd for better heat dissipation 3 gnd power vdd power supply ground 4 out+ output oscillator output 5 out- output complementary oscillator output 6 vdd power power supply voltage absolute maximum attempted operation outside the absolute maximum ratings of the part may cause permanent damage to the part. actual perfor- mance of the ic is only guaranteed within the operational speci fications, not at abso lute maximum ratings. parameter min. max. unit storage temperature -65 150 c vdd -0.5 4 v electrostatic discharge (hbm) C 2000 v soldering temperature (follow standard pb free soldering guidel ines) C260c thermal consideration package ? ja, 4 layer board (c/w) ? jc, bottom (c/w) 7050, 6-pin 142 27 5032, 6-pin 97 20 3225, 6-pin 109 20 environmental compliance parameter condition/test method mechanical shock mil-std-883f, method 2002 mechanical vibration mil-std-883f, method 2007 temperature cycle jesd22, method a104 solderability mil-std-883f, method 2003 moisture sensitivity level msl1 @ 260c 4 3 1 6 gnd vdd out+ 5 2 nc out- oe/st top view
the smart timing choice ? the smart timing choice ? SIT9120 standard frequency differential oscillator rev. 1.06 page 3 of 8 www.sitime.com waveform diagrams figure 1(a). lvpecl vo ltage levels per diffe rential pin (out+/o ut-) figure 1(b). lvpecl voltage le vels across di fferential pair figure 2. lvds voltage levels per differential pin (out+/out-) out+ out- gnd tr tf 20% 80% 20% vol 80% voh 0 v t v_ swing out+ out- gnd tr tf 20% 80% 20% vos 80% vod
the smart timing choice ? the smart timing choice ? SIT9120 standard frequency differential oscillator rev. 1.06 page 4 of 8 www.sitime.com termination diagrams lvpecl: z0 = 50 ? z0 = 50 ? d+ d- out+ out- 50 ? vtt = vdd C 2.0 v lvpecl driver receiver device 50 ? vdd figure 3. lvpecl ty pical termination d+ d- out+ out- lvpecl driver receiver device z0 = 50 ? z0 = 50 ? r1 50 ? 50 ? r1 vtt 100 nf 100 nf vdd vdd= 3.3v => r1 = 100 to 150 ? vdd= 2.5v => r1 = 75 ? ? z0 = 50 ? z0 = 50 ? d+ d- out+ out- lvpecl driver receiver device r1 r2 r3 r4 vdd vdd = 3.3v => r1 = r3 = 133 ? and r2 = r4 = 82 ? vdd = 2.5v => r1 = r3 = 250 ? and r2 = r4 = 62.5 ? vdd figure 5. lvpecl with th evenin typica l termination
the smart timing choice ? the smart timing choice ? SIT9120 standard frequency differential oscillator rev. 1.06 page 5 of 8 www.sitime.com lvds: figure 6. lvds single termination (load terminated) z0 = 50 ? z0 = 50 ? d+ d- out+ out- 100 ? lvds driver receiver device vdd
the smart timing choice ? the smart timing choice ? SIT9120 standard frequency differential oscillator rev. 1.06 page 6 of 8 www.sitime.com notes: 1. top marking: y denotes manufacturing origin and xxxx denotes manufacturing lot number. the value of y will depend on the a ssembly location of the device. 2. a capacitor of value 0.1 ? f between vdd and gnd is recommended. dimensions and patterns package size C dimensions (unit: mm) [1] recommended land pattern (unit: mm) [2] 3.2 x 2.5x 0.75 mm 5.0 x 3.2 x 0.75 mm 7.0 x 5.0x 0.90 mm 0.750.05 yxxxx 0.9 #2 #5 #2 #5 #1 #3 #4 #6 #1 #3 #4 #6 3.20.05 2.50.05 0.7 0.6 2.20 1.05 0.65 1.00 2.25 1.6 0.750.05 yxxxx 1.20 #2 #5 #2 #5 #1 #3 #4 #6 #1 #3 #4 #6 5.00.10 1.40 1.10 5.08 7.00.10 2.60 #1 #3 #6 #4 #1 #3 #6 #4 0.90 0.10 #2 #5 #2 #5 yxxxx 5.08 1.60 1.60 3.80
the smart timing choice ? the smart timing choice ? SIT9120 standard frequency differential oscillator rev. 1.06 page 7 of 8 www.sitime.com ordering information supported frequencies 25.000000 mhz 50.000000 mhz 74.175824 mhz 74.250000 mhz 75.000000 m hz 98.304000 mhz 100.000000 mhz 106.250000 mhz 125.000000 mhz 133.000000 mhz 133.300000 mhz 133.330000 mhz 133.333 000 mhz 133.333300 mhz 133.333330 mhz 133.333333 mhz 148.351648 mhz 148.500000 mhz 150.000000 mhz 155.520000 mhz 156.250 000 mhz 161.132800 mhz 166.000000 mhz 166.600000 mhz 166.660000 mhz 166.666000 mhz 166.666600 mhz 166.666660 mhz 166.666 666 mhz 200.000000 mhz 212.500000 mhz ordering codes for supported tape & reel packing method device size 8 mm t&r (3ku) 8 mm t&r (1ku) 8 mm t&r (250u) 12 mm t&r (3ku) 12 mm t&r (1ku) 12 mm t&r (250u) 16 mm t&r (3ku) 16 mm t&r (1ku) 16 mm t&r (250u) 7.0 x 5.0 mmCCCCCCtyx 5.0 x 3.2 mm C C C t y x C C C 3.2 x 2.5 mm d e g t y x C C C SIT9120ac -1c2-33e125.000000t frequency see supported frequency list below part family SIT9120 revision letter a is the revision of silicon temperature range i i ndustrial, -40 to 85 c packaging: t, y, x, d, e, or g refer to table below for packing method leave blank for bulk package size frequency stability c extended commercial, -20 to 70 c signalling type feature pin e for output enable s for standby 25 for 2.5v 10% 33 for 3.3v 10% xx for 2.25v to 3.63v b 3.2 x 2.5 mm x mm c 5.0 x 3.2 mm x mm d 7.0 x 5.0 mm x mm 1 = lvpecl 2 = lvds f for 10 ppm 1 for 20 ppm 2 for 25 ppm 3 for 50 ppm voltage supply
rev. 1.06 page 8 of 8 www.sitime.com ? sitime corporation 2014. the information contained herein is subject to change at any time without notice. sitime assumes no responsibility or liability for any loss, damage or defect of a product which is caused in whole or in part by (i) use of any c ircuitry other than circuitry embodied in a sitime product, (ii ) misuse or abuse including static discharge, neglect or accide nt, (iii) unauthorized modification or repairs which have been soldered o r altered during assembly and are not capable of being tested b y sitime under its normal test conditions, or (iv) improper installation, storage, handling, warehousing or transportation, or (v) being subjected to unusu al physical, thermal, or electr ical stress. disclaimer: sitime makes no warranty of any kind, express or implied, wit h regard to this material, and specifically disclaims any and a ll express or implied warranties, either in fact or by operation of law, statutory or otherwise, including the implied warranties of merchantability and fitness for use or a particu lar purpose, and any implied warranty arising from course of de aling or usage of trade, as well as any common-law duties relating to ac curacy or lack of negligence, with respect to this material, an y sitime product and any product documentation. products sold b y sitime are not suitable or inten ded to be used in a life suppor t application or component, to operate nuclear facilities, or i n other mission critical applicat ions where human life may be i nvolved or at stake. all sales are made conditioned upon compliance wit h the critical uses policy set forth below. critical use exclusion policy buyer agrees not to use sitime's products for any application o r in any components used in life support devices or to operate nuclear facilities or for use in other mission-criti cal applications or components where human life or property may be at stake. sitime owns all rights, title and interest to the intellectual property related to sitime's products, including any software, firmware, copyright, patent, or trademark. the sale of sitime p roducts does not convey or imply any license under patent or other righ ts. sitime retains the copyright and trademark rights in all do cuments, catalogs and plans supplied pursuant to or ancillary t o the sale of products or services by sitime. unless otherwise agreed to in writing by sitime, any re production, modification, trans lation, compilation, or representation of this material shall b e strictly prohibited. the smart timing choice ? the smart timing choice ? standard frequency dif ferential oscillator SIT9120 revision history version release date change summary 1.01 2/20/13 original 1.02 11/23/13 added input specifications, lvpecl/lvds waveforms, packaging t&r options 1.03 2/6/14 added 8mm t&r option 1.04 3/3/14 added 10 ppm 1.05 7/23/14 include thermal consideration table 1.06 10/3/14 modified thermal consideration values
the smart timing choice ? the smart timing choice ? sitime corporation 990 almanor avenue, s unnyvale, ca 94085 (408) 328-4400 www.sitime.com supplemental information the supplemental information section is not part of the datasheet and is for informational purposes only.
the smart timing choice ? the smart timing choice ? sitime corporation 990 almanor avenue, sunnyvale, ca 94085 (408) 328-4400 www.sitime.com silicon mems outperforms quartz rev. 1.1 revised october 5, 2013 silicon mems outperforms quartz
the smart timing choice ? the smart timing choice ? silicon mems outperforms quartz silicon mems outperforms quartz rev. 1.1 www.sitime.com best reliability silicon is inherently more reliable than quartz. unlike quartz suppliers, sitime has in-house mems and analog cmos expertise, which allows sitime to develop the most reliable products. figure 1 shows a comparison with quartz technology. why is sitime best in class: ? sitime?s mems resonators are vacuum sealed using an advanced episeal? process, which eliminates foreign par- ticles and improves long term aging and reliability ? world-class mems and cmos design expertise figure 1. reliability comparison [1] best aging unlike quartz, mems oscillators have excellent long term aging performance which is why every new sitime product specifies 10-year aging. a comparison is shown in figure 2. why is sitime best in class: ? sitime?s mems resonators are vacuum sealed using an advanced episeal process, which eliminates foreign parti- cles and improves long term aging and reliability ? inherently better immunity of electrostatically driven mems resonator figure 2. aging comparison [2] best electro magnetic susceptibility (ems) sitime?s oscillators in plastic packages are up to 54 times more immune to external electromagnetic fields than quartz oscillators as shown in figure 3. why is sitime best in class: ? internal differential architecture for best common mode noise rejection ? electrostatically driven mems resonator is more immune to ems figure 3. electro magnetic susceptibility (ems) [3] best power supply noise rejection sitime?s mems oscillators are more resilient against noise on the power supply. a comparison is shown in figure 4. why is sitime best in class: ? on-chip regulators and internal differential architecture for common mode noise rejection ? best analog cmos design expertise figure 4. power supply noise rejection [4] mean time between failure (million hours) 14 16 28 38 500 0 200 400 600 pericom txc epson idt (fox) sitime sitime 20x better 1.5 3.5 3.0 8.0 0 2 4 6 8 10 1-year 10-year sitime mems vs. quartz aging sitime mems oscillator quartz oscillator aging (ppm) sitime 2x better - 39 - 40 - 42 - 43 - 45 - 73 - 90 - 80 - 70 - 60 - 50 - 40 - 30 kyocera epson txc cw silabs sitime sitime vs quartz electro magnetic susceptibility (ems) a v e r a g e s p u r s ( d b ) sitime 54x better 0.0 1.0 2.0 3.0 4.0 5.0 10 100 1,000 10,000 a d d i t i v e i n t e g r a t e d p h a s e j i t t e r p e r m v p - p i n j e c t e d n o i s e ( p s / m v ) power supply noise frequency (khz) power supply noise rejection sitime ndk epson kyocera sitime ? sitime 3x better
the smart timing choice ? the smart timing choice ? silicon mems outperforms quartz silicon mems outperfo rms quartz rev. 1.1 www.sitime.com best vibration robustness high-vibration environments are all around us. all electronics, from handheld devices to enterprise servers and storage systems are subject to vibration. figure 5 shows a comparison of vibration robustness. why is sitime best in class: ? the moving mass of sitime?s mems resonators is up to 3000 times smaller than quartz ? center-anchored mems resonator is the most robust design figure 5. vibration robustness [5] best shock robustness sitime?s oscillators can withstand at least 50,000 g shock. they all maintain their electrical performance in operation during shock events. a comparison with quartz devices is shown in figure 6. why is sitime best in class: ? the moving mass of sitime?s mems resonators is up to 3000 times smaller than quartz ? center-anchored mems resonator is the most robust design figure 6. shock robustness [6] vibration sensitivity (ppb/g) 0.10 1.00 10.00 100.00 10 100 1000 vibration frequency (hz) vibration sensitivity vs. frequency sitime txc epson connor winfield kyocera silabs sitime up to 30x better 14.3 12.6 3.9 2.9 2.5 0.6 0 2 4 6 8 10 12 14 16 k y ocer a e p son txc cw silab s sitime differential xo shock robustness - 500 g sitime up to 25x better peak frequency deviation (ppm) notes: 1. data source: reliability documents of named companies. 2. data source: sitime and quartz oscillator devices datasheets. 3. test conditions for electro magnetic susceptibility (ems): ? according to iec en61000-4.3 (electromagnetic compatibility standard) ? field strength: 3v/m ? radiated signal modulation: am 1 khz at 80% depth ? carrier frequency scan: 80 mhz ? 1 ghz in 1% steps ? antenna polarization: vertical ? dut position: center aligned to antenna devices used in this test: sitime, SIT9120ac-1d2-33e156.250000 - mems based - 156.25 mhz epson, eg-2102ca 156.2500m-phpal3 - saw based - 156.25 mhz txc, bb-156.250mbe-t - 3rd overtone quartz based - 156.25 mhz kyocera, kc7050t156.250p30e00 - saw based - 156.25 mhz connor winfield (cw), p123-156.25m - 3rd overtone quartz based - 156.25 mhz silabs, si590ab-bdg - 3rd ov ertone quartz based - 156.25 mhz 4. 50 mv pk-pk sinusoidal voltage. devices used in this test: sitime, sit8208ai-33-33e-25.000000, mems based - 25 mhz ndk, nz2523sb-25.6m - quartz based - 25.6 mhz kyocera, kc2016b25m0c1ge00 - quartz based - 25 mhz epson, sg-310scf-25m0-mb3 - quartz based - 25 mhz 5. devices used in this test: same as ems test stated in note 3. 6. test conditions for shock test: ? mil-std-883f method 2002 ? condition a: half sine wave shock pulse, 500-g, 1ms ? continuous frequency measurement in 100 s gate time for 10 seconds devices used in this test: same as ems test stated in note 3 7. additional data, including setup and detailed results, is av ailable upon request to qualified customers. please contact productsupport@sitime.com .
the smart timing choice ? the smart timing choice ? document feedback form feedback form rev. 1.0 www.sitime.com sitime values your input in improving our documentation. click here for our online feedback form or fill out and email the form below to productsupport@sitime.com . 1. does the electrical characteristics table provide complete information? yes no if no, what parameters are missing? _________________________________________________________________________________________________ 2. is the organization of this document easy to follow? yes no if ?no,? please suggest improvements that we can make: _________________________________________________________________________________________________ 3. is there any application specific in formation that you would like to see in this document? (check all that apply) emi termination recommendations sho ck and vibration performance other if ?other,? please specify: _________________________________________________________________________________________________ 4. are there any errors in this document? yes no if ?yes?, please specify (what and where): _________________________________________________________________________________________________ 5. do you have additional recommendations for this document? _________________________________________________________________________________________________ name ________________________________________________________________________________ title ________________________________________________________________________________ company _________________________________________________________________________________________ address _________________________________________________________________________________________ city / state or province / postal code / country ___________________________________________________________ telephone __________________________________ application ________________________________________________________________________________________ would you like a reply? yes no thank you for your feedback. please click the ema il icon in your adobe reader tool bar and send to productsupport@sitime.com . or you may use our online feedback form .

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