SIT1569 power, ultra - small 1 hz C 460 khz 50 ppm oscillator features ? power operating current: 3.3 a (100 khz) ? factory - program mable frequency from 1 hz to 460 khz [ 1 ] ? 50 ppm max all - inclusive freq uency stability ? worlds smallest oscillator footprint: 1.2 mm 2 ? 1.5 mm x 0.8 mm csp ? 0.6 mm max height ? no external bypass cap acitors required ? wide operating supply voltage range: 1.8v to 3. 3v ? lvcmos compatible output ? pb - free, rohs and reach compliant applications ? smart stylus ? wearable biometric sensing ? wireless chargers ? portable medical note: 1. for higher frequency ap plication s, consider the sit1576 or the sit8021 . electrical specifications table 1 . dc electrical characteristics [ 2 ] conditions: min/max limits are over temperature, v dd = 1.8v 10%, unless otherwise stated. typicals are at 25c and v dd = 1.8v. parameters symbol min. typ. max. unit condition frequency output frequency range f out 1.0 462.5 k hz frequency stability initial tolerance f_tol - 10 10 ppm t a = 25 c. includes 2x reflow. frequency stability f_stab - 50 50 ppm all inclusive of over temperature, referenced to nominal frequency at 25 c, inclusive of v dd , aging, and load jitter rms period jitter t_jitter 4 8.5 ns rms 10,000 cycles, per jedec standard 65b, tested at 100 khz power supply power supply voltage v dd 1.62 3.63 v no load supply current i dd 1 .7 3 a f out = 1 hz 3.3 4 .6 f out = 100 khz 8 10 f out = 460 khz start - up time t_start 150 300 ms f out > 200 hz, to first output pulse . 250 + 2.0 cycles 300 + 2.5 cycles 10 hz < f out 200 hz, to first output pulse. 500 + 2.5 cycles 1 hz f out 10 hz, to first output pulse. operating temperature range commercial temperature - 20 70 c industrial temperature - 40 85 c lvcmos output rise - fall time t r /t f 10 40 7 0 ns 20 - 80%, 15 pf load, v dd = 1.8v 10% output clock duty cycle dc 45 55 % v oh - output voltage high voh 90% i oh = - 50 a, 15 pf load v ol - output voltage low vol 10% i ol = 50 a, 15 pf load note: 2. for applications requiring lower jitter or improved frequency stability, consider the sit1579 , or contact sitime for ot her product options . rev. 1.1 january 19, 2018 www.sitime.com
SIT1569 power, u ltra - small 1 hz C 460 khz 50 ppm oscillator rev. 1.1 page 2 of 7 www.sitime.com figure 1 . pin assignments table 2 . pin configuration table 3 . absolute maximum ratings 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 absolute maximum ratings. parameters test conditions value unit continuous power supply voltage range (v dd ) - 0.5 to 4.0 v continuous maximum operating temperature range 105 c short duration maximum operating temperature range 30 minutes 125 c human body model (hbm) esd protection jesd22 - a114 2000 v charge - device model (cdm) esd protection jesd22 - c101 750 v machine model (mm) esd protection jesd22 - a115 200 v latch - up tolerance jesd78 compliant mechanical shock resistance mil 883, method 2002 20,000 g mechanical vibration resistance mil 883, method 2007 70 g 1508 csp junction temperature 150 c storage temperature - 65 to 150 c system block diagram pin symbol i/o functionality 1 nc internal test pin no connect. leave floating. pin 1 is for internal testing and is designed to be left floating. 2 clk out output oscillator clock output, lvcmos compatible 3 v dd power supply connect to power supply between 1.8v and 3.3v 10% . under normal operating conditions, vdd does not require external bypass/decoupling capacitor(s). the SIT1569 includes on - chip vdd filtering. 4 gnd power supply ground connect to gnd csp package (top view) nvm driver nc clk out vdd gnd figure 2 . SIT1569 block diagram g n d v d d c l k o u t n c 1 4 2 3
SIT1569 power, u ltra - small 1 hz C 460 khz 50 ppm oscillator rev. 1.1 page 3 of 7 www.sitime.com detailed description the SIT1569 is the first ulp, factory - programmable oscillator in an ultra - small 1.5mm x 0.8mm (1508) chip - scale package (csp), and part of a new family of ulp, ultra - small oscillators from sitime . this device can be programmed for any frequency between 1 hz and 462.5 khz. the silicon mems technology makes it possible to produce the world's smallest, programmable reference clock in a chip - scale package. sitime's mems oscillator consists of a mems resonator and a programmable analog circuit. SIT1569 mems resonator is built with sitimes unique mems first? process. a key manufacturing step is episeal? during which the mems resonator is annealed with temperatures over 1000c. episeal creates an extremely strong, clean, vacuum chamber that encapsulates the m ems resonator and ensures the best performance and reliability. during episeal, a poly silicon cap is grown on top of the resonator cavity, which eliminates the need for additional cap wafers or other exotic packaging. as a result, sitimes mems resonator die can be used like any other semiconductor die. one unique result of sitimes mems first and episeal manufacturing processes is the capability to integrate sitimes mems die with a soc, asic, micropro cessor or analog die within a package to eliminate ext ernal timing components and provide a highly integrated, smaller, more cost - effective solution to the customer. frequency stability the SIT1569 oscillator is factory trimmed to 32.768 khz at room temperature. the result is a very accurate oscillator at ro om temperature and over temperature . unlike quartz crystals that have a classic tuning fork parabola temperature curve with a 25c turnover point with a 0.04 to 0.06 ppm/c 2 temperature coefficient (tcf) , the SIT1569 temperature coefficient is calibrated a t room temperature and corrected over temperature with an active temperature correction ci rcuit. the result is < 50 ppm fre quency variation over the - 40c to +85c temperature range. when measuring the SIT1569 output frequency with a frequency counter, it is important to make sure the counter's gate time is >100 ms. shorter gate times may lead to inaccurate measurements.
SIT1569 power, u ltra - small 1 hz C 460 khz 50 ppm oscillator rev. 1.1 page 4 of 7 www.sitime.com typical operating curves (t a = 25c, v dd = 1.8v, supply current plots are no load, unless otherwise stated) figure 3 . lvcmos output swing (v dd = 1.8v) figure 4 . pow er supply noise rejection (psnr) figure 5 . supply current vs temperature (f out = 1hz) figure 6 . supply current vs temperature (f out = 100 hz) figure 7 . supply current vs temperature (f out = 100 k hz) figure 8 . supply current vs temperature (f out = 440 k hz) 1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4 -40 -20 0 20 40 60 80 100 current (a) temperature ( c) v dd = 1.8v v dd = 3.3v 1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4 2.5 -40 -20 0 20 40 60 80 100 current (a) temperature ( c) v dd = 1.8v v dd = 3.3v 2 2.25 2.5 2.75 3 3.25 3.5 3.75 4 4.25 4.5 4.75 5 -40 -20 0 20 40 60 80 100 current (a) temperature ( c) v dd = 3.3v v dd = 1.8v 6 6.75 7.5 8.25 9 9.75 10.5 11.25 12 12.75 13.5 -40 -20 0 20 40 60 80 100 current (a) temperature ( c) v dd = 3.3v v dd = 1.8v n o v d d b y p a s s 1 0 n f v d d b y p a s s
SIT1569 power, u ltra - small 1 hz C 460 khz 50 ppm oscillator rev. 1.1 page 5 of 7 www.sitime.com dimensions and patterns package size C dimensions (unit: mm) recommended land pattern (unit: mm) recommended 4 - mil (0.1mm) stencil thickness manufacturing guidelines 1) no ultrasonic or megasonic cleaning: do not subject the SIT1569 to an ultrasonic or megasonic cleaning environment. permanent damage or long term reliability issues may occur. 2) applying board - level underfill and overmold is acceptable and will not impact the reliability of the device. 3) reflow profile, per jesd22 - a113d. 4) the SIT1569 csp includes a protective, opaque polymer top - coat. if the SIT1569 will see intense light, especially in the 1.0 - 1.2m ir spectrum, we recommend a protective glob - top epoxy or other cover to keep the light from negatively impacting the frequency stability. 5) for additional manufacturing guidelines and marking/tape - reel instructions , refer to: sitime manufacturing notes . # 1 # 2 # 4 # 3 ( s o l d e r m a s k o p e n i n g s s h o w n w i t h d a s h e d l i n e a r o u n d n s m d p a d )
SIT1569 power, u ltra - small 1 hz C 460 khz 50 ppm oscillator rev. 1.1 page 6 of 7 www.sitime.com ordering information p a r t f a m i l y s i t 1 5 6 9 r e v i s i o n l e t t e r a i s t h e r e v i s i o n t e m p e r a t u r e r a n g e c : c o m m e r c i a l , - 2 0 t o 7 0 o c i : i n d u s t r i a l , - 4 0 t o 8 5 o c p a c k a g e s i z e j : 1 . 5 x 0 . 8 m m c s p s i t 1 5 6 9 a c - j 3 - 3 3 e - 0 0 0 0 . 0 0 0 0 0 0 q f r e q u e n c y s t a b i l i t y 3 : 5 0 p p m p a c k a g i n g s a m p l e s i n c u t t a p e s : 8 m m t a p e & r e e l , 1 0 k u r e e l q : 8 m m t a p e & r e e l , 5 k u r e e l e : 8 m m t a p e & r e e l , 1 k u r e e l s u p p l y v o l t a g e ( v d d ) : 1 8 e : 1 . 8 v 1 0 % 2 5 e : 2 . 5 v 1 0 % 3 0 e : 3 . 0 v 1 0 % 3 3 e : 3 . 3 v 1 0 % f o r a p p l i c a t i o n s t h a t r e q u i r e o p e r a t i o n o v e r w i d e r a n g e , e n t e r t h e o p t i o n t h a t c o r r e s p o n d s t o t h e h i g h e s t s u p p l y v o l t a g e . o u t p u t f r e q u e n c y c o n t i n u o u s f r e q u e n c y o p t i o n s f r o m 1 h z t o 4 6 2 . 5 k h z e n t e r y o u r d e s i r e d f r e q u e n c y a s s h o w n b e l o w : 0 4 6 2 . 5 0 0 0 0 0 = 4 6 2 . 5 k h z 0 1 0 0 . 0 0 0 0 0 0 = 1 0 0 . 0 k h z 0 0 1 0 . 0 0 0 0 0 0 = 1 0 . 0 k h z 0 0 0 1 . 0 0 0 0 0 0 = 1 . 0 k h z 0 0 0 0 . 1 0 0 0 0 0 = 1 0 0 . 0 h z 0 0 0 0 . 0 1 0 0 0 0 = 1 0 . 0 h z 0 0 0 0 . 0 0 1 0 0 0 = 1 . 0 h z 0 0 0 0 . 0 0 1 1 0 0 = 1 . 1 0 h z 0 0 0 0 . 0 0 5 1 2 3 = 5 . 1 2 3 h z
SIT1569 power, u ltra - small 1 hz C 460 khz 50 ppm oscillator rev. 1.1 page 7 of 7 www.sitime.com table 4 . revision history version release date change summary 0.25 0 1/13/ 20 16 initial preliminary 0.5 0 4/28/2016 updated max operating frequency updated part number ordering 0.7 0 7/ 0 8/2016 updated min/max frequency stability, added rms period jitter 0.9 0 4/28 /2017 update part numbering code update min/max frequency stability updated csp package outline drawing (pod) updated supply current max limits updated logo and company address, other page layout changes 1.0 05/10/2017 final release 1.1 01/19/2018 added additional typical operating curves updated t ypical no load supply current ( table 1 ) sitime corporation , 5451 patrick henry drive , santa clara , ca 95054 , usa | phone: + 1 - 408 - 328 - 4400 | fax: +1 - 408 - 328 - 4439 ? sitime corporation 2016 - 2018 . 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 s itime product, (ii) misuse or abuse including static discharge, neglect or accident, (iii) unauthorized modification or repairs which have been soldered or alte red during assembly and are not capable of being tested by sitime under its normal test conditi ons, 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 all 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 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 appli cations 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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