sit 9005 1 to 141 mhz emi reduction oscillator rev 1.0 september 25, 2017 www.sitime.com feature s ? spread spectrum for emi reduction ? wide spread % option ? center spread: from 0.125% to 2 %, 0.125% step size ? down spread: - 0.25% to - 4 % with - 0.25% step size ? spread profile option: triangular, hershey - kiss ? programmable rise/fall time for emi red uction: 8 options, 0.25 to 40 ns ? any frequency between 1 mhz and 141 mhz accurate to 6 decimal places ? 100% pin - to - pin drop - in replacement to quartz - based xo ?s ? excellent total frequency stability as low as 20 ppm ? operating temperature from - 40c to 85 c. ? low power consumption of 4.0 ma typical at 1.8v ? pin1 modes: standby , o utput enable, or spread disable ? fast startup time of 5 ms ? lvcmos output ? industry - standard packages ? qfn: 2. 0 x 1.6, 2.5 x 2.0, 3.2 x 2.5 mm 2 ? contact sitime for sot23 - 5 ( 2.9 x 2.8 mm 2 ) ? rohs and reach compliant, pb - free, halogen - free and antimony - free applications ? surveillance camera ? ip camera ? industrial motors ? flat panel s ? multi function printers ? pci express electrical specifications table 1 . electrical characteristics all min and max limits are specified over temperature and rated operating voltage with 15 pf output load unless otherwise stated. typical values are at 25c and 3.3v supply voltage. parameters symbol min. typ. max. unit condition frequency range output frequency range f 1 ? 141 mhz frequency stability and aging frequency stability f_stab - 20 ? +20 ppm inclusive of initial tolerance at 25c, 1st year aging at 25c, and variations over operating temperature, rated power supply voltage. spread = off. - 25 ? +25 ppm - 50 ? +50 ppm operating temperature range operating temperature range t_use - 20 ? +70 c extended commercial - 40 ? +85 c industrial supply voltage and current consumption supply voltage vdd 1.62 1.8 1.98 v 2.25 2.5 2.75 v 2.52 2.8 3.08 v 2.7 3.0 3.3 v 2.97 3.3 3.63 v 2.25 ? 3.63 v current consumption idd ? 5.6 6.5 ma no load condition, f = 4 0 mhz, vdd = 2.5v to 3.3v ? 5.0 5.5 ma no load condition, f = 40 mhz, vdd = 1.8v oe disable current i_od ? 5.0 6.5 ma f = 40 mhz, vdd = 2.5v to 3.3v, oe = gnd, output in high - z state ? 4.6 5.2 ma f = 40 mhz, vdd = 1.8v, oe = gnd, output in high - z state standby current i_std ? 2.1 4.3 a st = gnd, vdd = 2.5v to 3.3v, output is weakly pulled down ? 0.4 1.5 p a st = gnd, vdd = 1.8v, output is weakly pulled down
SIT9005 1 to 141 mhz emi reduction oscillator rev 1.0 page 2 of 9 www.sitime.com table 1 . electrical characteristics (continued) parameters symbol min. typ. max. unit condition lvcmos output characteristics duty cycle dc 45 ? 55 % rise/fall time tr, tf ? 1 2 ns vdd = 2.5v, 2.8v, 3.0v or 3.3v, 20% - 80% , default derive strength ? 1.3 2.5 ns vdd =1.8v, 20% - 80% , default derive strength ? ? 2 ns vdd = 2.25v - 3.63v, 20% - 80% , default derive strength output high voltage voh 90% ? ? vdd ioh = - 4 ma (vdd = 3.0v or 3.3v) ioh = - 3 ma (vdd = 2.8v and vdd = 2.5v) ioh = - 2 ma (vdd = 1.8v) output low voltage vol ? ? 10% vdd iol = 4 ma (vdd = 3.0v or 3.3v) iol = 3 ma (vdd = 2.8v and vdd = 2.5v) iol = 2 ma (vdd = 1.8v) input characteristics input high voltage vih 70% ? ? vdd pin 1, oe or st input low voltage vil ? ? 30% vdd pin 1, oe or st input pull - up impedance z_in 50 87 150 k ? pin 1, oe logic high or logic low, or st logic high 2 ? ? m ? pin 1, st logic low startup and resume timing startup time t_start ? ? 5 ms measured from the time vdd reaches its rated minimum value enable/disable time t_oe ? ? 18 0 ns f = 40 mhz. for other frequencies, t_oe = 100 ns + 3 * cycles resume time t_resume ? ? 5 ms measured from the time st pin crosses 50% threshold spread enable time t_sde ? ? 4 s measured from the time sd pin crosses 50% threshold spread disable time t_sdde ? ? 50 s measured from the time sd pin crosses 50% threshold jitter cycle - to - cycle jitter t_ccj ? 10 .5 15 ps f = 4 0 mhz, vdd = 2.5 to 3.3v, spread = on ( or off) ? 8.5 12 ps f = 40 mhz, vdd = 3.3v, spread = on ( or off) ? 1 2.5 22 ps f = 40 mhz, vdd = 1.8v, spread = on( or off) table 2 . spread spectrum % [1,2 ] ordering code center spread (%) down spread (%) a 0.125 - 0.25 b 0 .250 - 0.50 c 0.390 - 0.78 d 0.51 5 - 1.04 e 0.640 - 1.29 f 0.765 - 1.55 g 0. 905 - 1.84 h 1.03 0 - 2.10 i 1.15 5 - 2.36 j 1.28 0 - 2.62 k 1.42 0 - 2.91 l 1.54 5 - 3.18 m 1.67 0 - 3.45 n 1.795 - 3.71 o 1.93 5 - 4.01 p 2.06 0 - 4.28 notes: 1. in both center spread and down spread modes, modulation rate is employed with a frequency of ~31.25 khz. 2. contact sitime for wider spread options table 3 . spread profile spread profile triangular hershey - kiss
SIT9005 1 to 141 mhz emi reduction oscillator rev 1.0 page 3 of 9 www.sitime.com table 4 . pin description pin symbol functionality 1 o e / st / n c/ sd output enable h [3 ] : specified frequency output l: output is high impedance. only outpu t driver is disabled. standby h [ 3 ] : specified frequency output l: output is low (week pull down). device goes to sleep mode. supply current reduced to i_std. no connect pin1 has no function (any voltage between 0 and vdd or open) spread disable h: spread = on l: spread = off 2 gnd power electrical ground 3 out output oscillator output 4 vdd power power supply voltage [4 ] top view figure 1 . pin assignments notes: 3. in oe or st mode, a pull - up resistor of 10 k or less is recommended if pin 1 is not externally driven. if pin 1 needs to be left floating, use the nc option. 4. a capacitor of value 0.1 f or higher between vdd and gnd is required. table 5 . absolute maximum limits attempted operation outside the absolute maximum ratings may cause permanent damage to the part. actual performance of the ic is only guaranteed within the operational specifications, not at ab solute maximum ratings. parameter min. max. unit storage temperature - 65 150 c vdd - 0.5 4 v electrostatic discharge ? 2000 v soldering temperature (follow standard pb free soldering guidelines) ? 260 c junction temperature [5 ] ? 150 c note: 5. exceeding this temperature for extended period of time may damage the device. table 6 . maximum operating junction temperature [6] max operating temperature (ambient) maximum operating junction temperature 70 c 80 c 85 c 95 c note: 6. datasheet specifications are not guaranteed if junction temperature exceeds the maximum operating junction temperature. table 7 . 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 @ 260 c 1 2 3 4 vdd out gnd oe / / n c/ sd
SIT9005 1 to 141 mhz emi reduction oscillator rev 1.0 page 4 of 9 www.sitime.com timing diagrams 90 % vdd vdd pin 4 voltage clk output t_start t_start: time to start from power-off no glitch during start up [7] hz figure 2 . startup timing 50% vdd vdd st voltage clk output t_resume t_resume: time to resume from st hz figure 3 . standby resume timing (st mode only) 50 % vdd vdd oe voltage clk output t_oe t_oe: time to re-enable the clock output hz figure 4 . oe enable timing (oe mode only) 50 % vdd vdd oe voltage clk output t_oe: time to put the output in high z mode hz t_oe figure 5 . oe disable timing (oe mode only) frequency deviation (%) time (s) t_sde sd voltage vdd 50% vdd modulation period = 32s (31.25khz) figure 6 . sd enable timing (sd mode only) frequency deviation (%) time (s) t_sdde sd voltage vdd 50% vdd figure 7 . sd diable timing (sd mode only) note: 7. SIT9005 has ?no runt? pulses and ?no glitch? output during startup or resume .
SIT9005 1 to 141 mhz emi reduction oscillator rev 1.0 page 5 of 9 www.sitime.com programmable drive strength the SIT9005 includes a programmable drive strength feature to provide a simple, flexible tool to optimize the clock rise/fall time for specific applications. benefits from the programmable drive strength feature are: ? improves system radiated electromagnetic interference (emi) by slowing down the clock rise/fall time ? improves the downstream clock receiver?s (rx) jitter by decreasing (speeding up) the clock rise/fall time. ? ability to drive large capacitive loads while maintaining full swing with sharp edge rates. for more detailed information about rise/fall time control and drive strength selection, see the sitime application notes section: http://www.sitime.com/support/application - notes. emi reduction by slowing rise/fall time figure 8 shows the harmonic power reduction as the rise/fall times are increased (slowed down). the rise/fall times are expressed as a ratio of the clock period. for the ratio of 0.05, the signal is v ery close to a square wave. for the ratio of 0.45, the rise/fall times are very close to near - triangular waveform. these results, for example, show that the 11th clock harmonic can be reduced by 35 db if the rise/fall edge is increased from 5% of the perio d to 45% of the period. figure 8 . harmonic emi reduction as a function of slower rise/fall time jitter reduction with faster rise/fall time power supply noise can be a source of jitter for the downstrea m chipset. one way to reduce this jitter is to increase rise/fall time (edge rate) of the input clock. some chipsets would require faster rise/fall time in order to reduce their sensitivity to this type of jitter. the SIT9005 provides up to 3 additional high drive strength settings for very fast rise/fall time. refer to the vdd = 1.8v rise /fall times for specific c load to determine the proper drive s trength. high output load capability the rise/fall time of the input clock varies as a function of the actual capacitive load the clock drives. at any given drive strength, the rise/fall time becomes slower as the output load increases. as an example, for a 3.3v SIT9005 device with default drive strength setting, the typical rise/fall time is 1.1 ns for 15 pf output load. the typical rise/fall time slows down to 2.9 ns when the output load increases to 45 pf. one can choose to speed up the rise/fall time to 1.9 ns by then increasing the drive strength setting on the SIT9005 . the SIT9005 can support up to 60 pf or higher in maximum capacitive loads with up to 3 additional drive strength settings. refer to the vdd = 1.8v rise /fall times for specific c load to determine the proper drive strength for the desired combination of output load vs. rise/fall time SIT9005 drive strength selection tables table 1 through ta ble 12 define the rise/fall time for a given capacitive load and supply voltage. select the table that matches the SIT9005 nominal supply voltage (1.8v, 2.5v, 2.8v, 3.3v). select the capacitive load column that matches the application requirement (15 pf to 60 pf) under the capacitive load column, select the desired rise/fall times. the left - most column represents the part number code for the corresponding drive strength. add the drive strength code to the part number for ordering purposes. calculating maximum frequency based on the rise and fall time data given in tables table 1 through table 12 , the maximum frequency th e oscillator can operate with guaranteed full swing of the output voltage over temperature as follows: = 1 5 x trf_20/80 max frequency w here trf_20/80 is the typical rise/fall time at 20% to 80% vdd example 1 calculate f max for the following condition: ? vdd = 3.3v ( ta ble 12) ? capacitive load: 30 pf ? desired tr/f time = 1.6ns (rise/fall time part number code = z) part number for the above example: drive strength code is inserted here. default setting is ? - ? SIT9005 ai z 14 - 33eb - 105.12345
SIT9005 1 to 141 mhz emi reduction oscillator rev 1.0 page 6 of 9 www.sitime.com rise/fall time (20% to 80%) vs c load tables table 8 . vdd = 1 .8v rise/fall times for specific c load table 9 . vdd = 2.5v rise/fall times for specific c load rise/fall time typ (ns) drive strength \ c load 5 pf 15 pf 30 pf 45 pf 60 pf l 6.16 11.61 22.00 31.27 39.91 a 3.19 6.35 11.00 16.01 21.52 r 2.11 4.31 7.65 10.77 14.47 b 1.65 3.23 5.79 8.18 11.08 t 0.93 1.91 3.32 4.66 6.48 e 0.78 1.66 2.94 4.09 5.74 u 0.70 1.48 2.64 3.68 5.09 f or " \ ": default 0.65 1.30 2.40 3.35 4.56 rise/fall time typ (ns) drive strength \ c load 5 pf 15 pf 30 pf 45 pf 60 pf l 4.13 8.25 12.82 21.45 27.79 a 2.11 4.27 7.64 11.20 14.49 r 1.45 2.81 5.16 7.65 9.88 b 1.09 2.20 3.88 5.86 7.57 t 0.62 1.28 2.27 3.51 4.45 e or " \ ": default 0.54 1.00 2.01 3.10 4.01 u 0.43 0.96 1.81 2.79 3.65 f 0.34 0.88 1.64 2.54 3.32 table 10 . vdd = 2.8v rise/fall times for specific c load rise/fall time typ (ns) drive strength \ c load 5 pf 15 pf 30 pf 45 pf 60 pf l 3.77 7.54 12.28 19.57 25.27 a 1.94 3.90 7.03 10.24 13.34 r 1.29 2.57 4.72 7.01 9.06 b 0.97 2.00 3.54 5.43 6.93 t 0.55 1.12 2.08 3.22 4.08 e or " \ ": default 0.44 1.00 1.83 2.82 3.67 u 0.34 0.88 1.64 2.52 3.30 f 0.29 0.81 1.48 2.29 2.99 table 11 . vdd = 3.0v rise/fall times for spe cific c load rise/fall time typ (ns) drive strength \ c load 5 pf 15 pf 30 pf 45 pf 60 pf l 3.60 7.21 11.97 18.74 24.30 a 1.84 3.71 6.72 9.86 12.68 r 1.22 2.46 4.54 6.76 8.62 b 0.89 1.92 3.39 5.20 6.64 t or " \ ": default 0.51 1.00 1.97 3.07 3.90 e 0.38 0.92 1.72 2.71 3.51 u 0.30 0.83 1.55 2.40 3.13 f 0.27 0.76 1.39 2.16 2.85 ta ble 12. v dd = 3. 3v rise /f all times for spe cific c load rise/fall time typ (ns) drive strength \ c load 5 pf 15 pf 30 pf 45 pf 60 pf l 3.39 6.88 11.63 17.56 23.59 a 1.74 3.50 6.38 8.98 12.19 r 1.16 2.33 4.29 6.04 8.34 b 0.81 1.82 3.22 4.52 6.33 t or " \ 0.46 1.00 1.86 2.60 3.84 e 0.33 0.87 1.64 2.30 3.35 u 0.28 0.79 1.46 2.05 2.93 f 0.25 0.72 1.31 1.83 2.61
SIT9005 1 to 141 mhz emi reduction oscillator rev 1.0 page 7 of 9 www.sitime.com dimensions and patterns package size ? dimensions (unit: mm ) [8 ] re commended land pattern (unit: mm) [9 ] 2.0 x 1.6 x 0.75 mm 2.5 x 2.0 x 0.75 mm 2 . 5 0.05 2.0 0.05 1.1 1.00 0.75 0.5 0.75 0.05 yxxxx #1 #2 #4 #3 #2 #1 #3 #4 1 . 1 1 . 0 1 . 5 1 . 9 3.2 x 2.5 x 0.75 mm 3.2 0.05 2.5 0.05 2.1 0.9 0.7 0.9 0.75 0.05 #1 #2 #4 #3 #2 #1 #3 #4 yxxxx 2 . 2 1 . 9 1 . 4 1 . 2 notes: 8. top marking: y denotes manufacturing origin and xxxx denotes manufacturing lot number. the value of ?y? will depend on the assembly location of the device. 9. a capacitor of value 0.1 f or higher between vdd and gnd is required.
SIT9005 1 to 141 mhz emi reduction oscillator rev 1.0 page 8 of 9 www.sitime.com ordering information the part no. guide is for reference only. to customize and build an exact part number, use the sit ime part number generator . frequency 1 . 000000 to 141.000000 mhz part family SIT9005 revision letter a is the revision temperature range supply voltage 18 for 1.8v 10% 25 for 2.5v 10% 28 for 2.8v 10% 33 for 3.3v 10% feature pin e for output enable s for standby n for no connect d for spread disablel frequency stability 1 for 20 ppm 2 for 25 ppm 3 for 50 ppm package size [10] SIT9005ai - 71-18ea25.000625d 30 for 3.0v 10% packing method d: 8 mm tape & reel, 3ku reel e: 8 mm tape & reel, 1ku reel blank for bulk xx for 2.5v -10% to 3.3v +10% output drive strength C default (datasheet limits) see tables 7 to 11 for rise/fall times 7 2.0 x 1.6 mm 1 2.5 x 2.0 mm 2 3.2 x 2.5 mm l a r b t e u f c commercial -20oc to 70oc i industrial -40oc to 85oc spread percentage center: down: 0.125, -0.25 0.250, -0.50 0.390, -0.78 0.515, -1.04 0.640, -1.29 0.765, -1.55 0.905, -1.84 1.030, -2.10 1.155, -2.36 1.280, -2.62 1.420, -2.91 1.545, -3.18 1.670, -3.45 1.795, -3.71 1.935, -4.01 2.060, -4.28 spread type and profile - center spread & triangular (default) h center spread & hershey kiss d down spread & triangular g down spread & hershey kiss for for for for for for for for for for for for for for for for a b c d e f g h i j k l m n o p note : 10. contact sitime for sot23 (2.9 x 2.8 mm 2 ) package
SIT9005 1 to 141 mhz emi reduction oscillator rev 1.0 page 9 of 9 www.sitime.com table 13 . revision history revision release date change summary 1.0 09 /2 5 /2017 final release sitime corporation , 5451 patrick henry drive , santa clara , ca 95054 , usa | phone: + 1 - 408 - 328 - 4400 | fax: +1 - 408 - 328 - 4439 ? sitime corporation 2016 - 2017. 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 circuitry other than circuitry embodied in a sitime produc t, (ii) misuse or abuse including static discharge, neglect or accident, (iii) unauthorized modification or repairs which have bee n soldered or alte red during assembly and are not capable of being tested by sitime under its normal test conditions, or (iv) improper installation, storage, handling, warehousing or transportation, or (v) being subjected to unusual physical, the rmal, or electrical stress. disclaimer: sitime makes no warranty of any kind, express or implied, with regard to this material, and specifically disclaims any and al l express or implied warranties, either in fact or by operation of law, statutory or otherwise, inc luding the implied warranties of merchantability and fitness for use or a particular purpose, and any implied warranty arising from course of dealing or usage of trade, as well as any common - law duties relating to accuracy or lack of negligence, with respect to this material, any sitime product and any product documentation. products sold by sitime are not suitable or intended to be used in a life support application or component, to operate nuclear facilities, or in other mission critical applications where human life may be involved or at stake. all sales are made conditioned upon compliance with the critical uses policy set forth below. critical use exclusion policy buyer agrees not to use sitime's products for any application or in any components used in life support devices or to operate nuclear facilities or for use in other mission - critical 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 products does not convey or imply any license under patent or other rights. sitime retains the copyright and trademark rights in all documents, catalogs and plans supplied pursuant to or ancillary to the sale of products or services by sitime. unless otherwise agreed to in writing by sitime, any reproduction, modification, translation, compilation, or representation of this material shall be strictly prohibited.
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