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cy2xf34 high performance lvpecl oscillator with frequency margining ? pin control cypress semiconductor corporation ? 198 champion court ? san jose , ca 95134-1709 ? 408-943-2600 document number: 001-53149 rev. *e revised june 13, 2011 high performance lvpecl oscillator with frequency margining - pin control features low jitter crystal oscillator (xo) less than 1 ps typical rms phase jitter differential lvpecl output output frequency from 50 mhz to 690 mhz two frequency margining control pins (fs0, fs1) factory configured or field programmable integrated phase-locked loop (pll) supply voltage: 3.3 v or 2.5 v pb-free package: 5.0 3.2 mm lcc commercial and industrial temperature ranges functional description the cy2xf34 is a high performance and high frequency crystal oscillator (xo). it uses a cypress proprietary low noise pll to synthesize the frequency from an integrated crystal. the output frequency can be changed through two select pins, allowing easy frequency margin testing in applications. the cy2xf34 is available as a factory configured device or as a field programmable device. pinouts figure 1. pin diagra m - 6-pin ceramic lcc logic block diagram output divider 1 fs1 crystal oscillator low-noise pll 4 clk 5 clk# 2 fs0 frequency select decode 1 3 fs1 vss vdd clk 6 4 2 5clk# fs0 pin definitions pin name i/o type description 1, 2 fs1, fs0 cmos input frequency select 4, 5 clk, clk# lvpecl output differential output clock 6 vdd power supply voltage: 2.5 v or 3.3 v 3 vss power ground
cy2xf34 document number: 001-53149 rev. *e page 2 of 12 contents logic block diagram ........................................................ 1 pinouts .............................................................................. 1 pin definitions .................................................................. 1 functional description ..................................................... 3 programming description ............................................... 3 field programmable cy2xf34f ................................. 3 factory configured cy2xf34 ..................................... 3 programming variables ................................................... 3 output frequencies .. .............. .............. .............. ......... 3 industrial versus commercial device performance .... 3 phase noise versus jitter pe rformance ..................... 3 absolute maximum conditions ....................................... 4 operating conditions ....................................................... 4 dc electrical characteristics .......................................... 4 ac electrical characteristics .......................................... 5 typical output characteristics ....................................... 5 switching waveforms ...................................................... 7 termination circuits ......................................................... 7 ordering information ........................................................ 8 possible configuration ................................................ 8 ordering code definitions ..... ...................................... 8 package drawings and dimensio ns ............................... 9 acronyms ........................................................................ 10 document conventions ................................................. 10 units of measure ....................................................... 10 document history page ................................................. 11 sales, solutions, and legal information ...................... 12 worldwide sales and design s upport ......... .............. 12 products .................................................................... 12 psoc solutions ......................................................... 12
cy2xf34 document number: 001-53149 rev. *e page 3 of 12 functional description the fs0 and fs1 pins select between four different output frequencies, as shown in ta b l e 1 . frequency margining is a common application for this feature. one frequency is used for the standard operating mode of the device, while the other frequencies are available for margin testing, either during product development or in system manufacturing test. when changing the output frequ ency, the frequency transition is not guaranteed to be smooth. there can be frequency excursions beyond the start frequency and the new frequency. glitches and runt pulses are poss ible, and time must be allowed for the pll to relock. programming description the cy2xf34 is a programmable device. before being used in an application, it must be programmed with the output frequencies and other variables described in a later section. two different device types are available, each with its own programming flow. they are described in the following sections. field programmable cy2xf34f field programmable devices are shipped unprogrammed and must be programmed before being installed on a printed circuit board (pcb). customers use cyberclocks? online software to specify the device configur ation and generate a jedec (extension .jed) programming file. programming of samples and prototype quantities is available using a cypress programmer. third party vendors manufacture programmers for small to large volume applications. cypress?s value added distribution partners also provide programming services. field programmable devices are designated with an ?f? in the part number. they are intended for quick prototyping and inventory reduction. the cy2xf34 is one time programmable (otp). the software is located at cyberclocks(tm) online software factory configured cy2xf34 for customers wanting ready-to-use devices, the cy2xf34 is available with no field programmi ng required. all requests are submitted to the local cypress field application engineer (fae) or sales representative. after the request is processed, you receive a new part number, samples, and datasheet with the programmed values. this part number is used for additional sample requests and production orders. programming variables output frequencies the cy2xf34 is programmed with up to four independent output frequencies, which are then se lected using the fs0 and fs1 pins. the device can synthesize frequencies to a resolution of 1 part per million (ppm), but the actual accuracy of the output frequency is limited by the accuracy of the integrated reference crystal. the cy2xf34 has an output frequency range of 50 mhz to 690 mhz, but the range is not continuous. the cy2xf34 cannot generate frequencies in the ranges of 521 mhz to 529 mhz, and 596 mhz to 617 mhz. industrial versus commerc ial device performance industrial and commercial devices have different internal crystals. this has a potentially si gnificant impact on performance levels for applications requiring the lowest possible phase noise. cyberclocks online software displays expected performance for both options. phase noise versus jitter performance in most cases, the device configuration for optimal phase noise performance is different from t he device configuration for optimal cycle to cycle or period jitt er. cyberclocks online software includes algorithms to optimize performance for either parameter. table 1. frequency select fs1 fs0 output frequency 0 0 frequency 0 0 1 frequency 1 1 0 frequency 2 1 1 frequency 3 table 2. device programming variables variable output frequency 0 (power on default) output frequency 1 output frequency 2 output frequency 3 optimization (phase noise or jitter) temperature range (commercial or industrial)
cy2xf34 document number: 001-53149 rev. *e page 4 of 12 absolute maximum conditions parameter description condition min max unit v dd supply voltage ?0.5 4.4 v v in [1] input voltage, dc relative to v ss ?0.5 v dd + 0.5 v t s temperature, storage non operating ?55 135 c t j temperature, junction ?40 135 c esd hbm esd protection (human body model) jedec std 22-a114-b 2000 ? v ? ja [2] thermal resistance, junction to ambient 0 m/s airflow 64 c/w operating conditions parameter description min typ max unit v dd 3.3 v supply voltage range 3.135 3.3 3.465 v 2.5 v supply voltage range 2.375 2.5 2.625 v t pu power up time for v dd to reach minimum specified voltage (power ramp is monotonic) 0.05 ? 500 ms t a ambient temperature (commercial) 0 ? 70 c ambient temperature (industrial) ?40 ? 85 c notes 1. the voltage on any input or io pin cannot exceed the power pin during power up. 2. simulated. the board is derived from the jedec multilayer sta ndard. it measures 76 114 1.6 mm and has 4-layers of copper (2/1/1/2 oz.). the internal layers are 100% copper planes, while the top and bottom layers hav e 50% metalization. no vias are included in the model. 3. i dd includes ~24 ma of current that is dissipat ed externally in the output termination resistors. dc electrical characteristics parameter description condition min typ max unit i dd [3] operating supply current v dd = 3.465 v, clk = 150 mhz, output terminated ??150ma v dd = 2.625 v, clk = 150 mhz, output terminated ??145ma v oh lvpecl high output voltage v dd = 3.3 v or 2.5 v, r term = 50 ? to v dd ? 2.0 v v dd ? 1.15 ? v dd ? 0.75 v v ol lvpecl low output voltage v dd = 3.3 v or 2.5 v, r term = 50 ? to v dd ? 2.0 v v dd ? 2.0 ? v dd ? 1.625 v v od1 lvpecl output vo ltage swing (v oh ? v ol ) v dd = 3.3 v or 2.5 v, r term = 50 ? to v dd ? 2.0 v 600 ? 1000 mv v od2 lvpecl output vo ltage swing (v oh ? v ol ) v dd = 2.5 v, r term = 50 ? to v dd ? 1.5 v 500 ? 1000 mv v ocm lvpecl output common mode voltage ((v oh + v ol )/2) v dd = 2.5 v, r term = 50 ? to v dd ? 1.5 v 1.2 ? ? v v ih input high voltage 0.7 v dd ?? v v il input low voltage ? ? 0.3 v dd v i ih0 input high current, fs0 pin input = v dd ??115 ? a i ih1 input high current, fs1 pin input = v dd ??10 ? a i il0 input low current, fs0 pin input = v ss ?50 ? ? ? a i il1 input low current, fs1 pin input = v ss ?20 ? ? ? a
cy2xf34 document number: 001-53149 rev. *e page 5 of 12 typical output characteristics figure 2. 2.5v supply and termination to v dd ?1.5 v, minimum v dd and maximum t a c in0 [4] input capacitance, fs0 pin ? 15 ? pf c in1 [4] input capacitance, fs1 pin ? 4 ? pf dc electrical characteristics (continued) parameter description condition min typ max unit ac electrical characteristics the ac electrical characteristics for part cy2xf34 are as follows [4] parameter description condition min typ max unit f out output frequency [5] 50 ? 690 mhz fsc frequency stability, commercial devices [6] t a = 0 c to 70 c ? ? 35 ppm fsi frequency stability, industrial devices [6] t a = ?40 c to 85 c ? ? 55 ppm ag aging, 10 years ? ? 15 ppm t dc output duty cycle f ? 450 mhz, measured at zero crossing 45 50 55 % f > 450 mhz, measured at zero crossing 40 50 60 % t r , t f output rise and fall time 20% and 80 % of full output swing 0.2 0.4 1.0 ns t lock startup time time for clk to reach valid frequency measured from the time v dd = v dd (min) ??10ms t lfs re-lock time time for clk to reach valid frequency from fs0 or fs1 pin change ??10ms t jitter( ? ) rms phase jitter (random) f out = 106.25 mhz (12 khz?20 mhz) ? 1 ? ps notes 4. not 100% tested, guaranteed by design and characterization. 5. this parameter is specified in cyberclocks online software. 6. frequency stability is the maximum variation in frequency from f 0 . it includes initial accuracy, plus variation from temperature and supply voltage. 1.20 1.25 1.30 1.35 1.40 0 100 200 300 400 500 600 700 frequency (mhz) v ocm (v) 0.4 0.5 0.6 0.7 0.8 0.9 0 100 200 300 400 500 600 700 frequency (mhz) swing (v)
cy2xf34 document number: 001-53149 rev. *e page 6 of 12 figure 3. 2.5 v supply and termination to v dd ?2 v, minimum v dd and maximum t a figure 4. 3.3 v supply and termination to v dd ?2 v, minimum v dd and maximum t a 0.70 0.75 0.80 0.85 0.90 0 100 200 300 400 500 600 700 frequency (mhz) v ocm (v) 0.4 0.5 0.6 0.7 0.8 0.9 0 100 200 300 400 500 600 700 frequency (mhz) swing (v) 0.4 0.5 0.6 0.7 0.8 0.9 0 100 200 300 400 500 600 700 frequency (mhz) swing (v) 1.40 1.45 1.50 1.55 1.60 0 100 200 300 400 500 600 700 frequency (mhz) v ocm (v)
cy2xf34 document number: 001-53149 rev. *e page 7 of 12 switching waveforms figure 5. output dc parameters figure 6. duty cycle timing figure 7. output rise and fall time termination circuits figure 8. l vpecl termination clk v a v b clk# v od v ocm = (v a + v b )/2 clk t pw t period t dc = t pw t period clk# 20% 80% t r clk 20% 80% clk# t f clk# ??? ??? ??? buf clk ??? vdd - 2v (vdd = 3.3v) clk# ??? ??? ??? buf clk ??? vdd - 2v or vdd - 1.5v (vdd = 2.5v)
cy2xf34 document number: 001-53149 rev. *e page 8 of 12 possible configuration some product offerings are factory programmed customer specific devices with customized part numbers.the possible configuration s table shows the available device types, but not complete part numbers. contact your local cypress fae of sales representative f or more information. ordering code definitions ordering information part number configuration package description product flow pb-free cy2xf34flxct field programmable 6-pin ceramic lcc smd - tape and reel commercial, 0 c to 70 c CY2XF34FLXIT field programmable 6-pin ceramic lcc smd - tape and reel industrial, ?40 c to 85 c part number [7] configuration package description product flow pb-free cy2xf34lxcxxxt factory configured 6-pin ceramic lcc smd - tape and reel commercial, 0 c to 70 c cy2xf34lxixxxt factory configured 6-pi n ceramic lcc smd - tape and re el industrial, ?40 c to 85 c t = tape and reel customer specific code temperature range: x = c or i c = commercial; i = industrial pb-free package type: 6-pin ceramic lcc smd configuration: f = field programmable; blank = factory configured part identifier family company id: cy = cypress 2x cy f34 t l xxx x x f note 7. ?xxx? is a factory assigned code that identifies the programming option.for more details, contact your local cypress fae or s ales representative.
cy2xf34 document number: 001-53149 rev. *e page 9 of 12 package drawings and dimensions figure 9. 6-pin 3.2 5.0 mm ceramic lcc lz06a 001-10044 *a
cy2xf34 document number: 001-53149 rev. *e page 10 of 12 acronyms document conventions units of measure acronym description cmos complementary metal oxide semiconductor esd electrostatic discharge fae field application engineer i/o input/output otp one time programmable pcb printed circuit board pll phase-locked loop smd surface mounted devices symbol unit of measure c degree celsius a microampere ma milliampere mm millimeter ms millisecond mv millivolt mhz megahertz ns nanosecond pf picofarad ps picosecond ppm parts per million vvolts wwatts % percent ? ohms
cy2xf34 document number: 001-53149 rev. *e page 11 of 12 document history page document title: cy2xf34 high performance lvpecl oscillator with frequency margining ? pin control document number: 001-53149 revision ecn orig. of change submission date description of change ** 2704379 kvm/pyrs 05/11/09 new datasheet *a 2734005 wwz 07/09/09 post to external web *b 2761926 kvm 09/10/09 revised maximum output rise and fall times added absolute maximum conditions table *c 2898472 kvm 03/24/2010 moved ?xxx? parts to possible configurations table. updated package diagram. *d 3199911 bash 03/18/2011 changed status from preliminary to final. added ordering code definitions . added acronyms and units of measure . updated in new template. *e 3281222 bash 06/13/2011 swapped fs0 and fs1 in logic block diagram, pinouts and pin definition on page 1.
document number: 001-53149 rev. *e revised june 13, 2011 page 12 of 12 all products and company names mentioned in this document may be the trademarks of their respective holders. cy2xf34 ? cypress semiconductor corporation, 2009-2011. the information contained herein is subject to change without notice. cypress s emiconductor corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a cypress product. nor does it convey or imply any license under patent or other rights. cypress products are not warranted nor intended to be used for medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement wi th cypress. furthermore, cypress does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. the inclusion of cypress products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies cypress against all charges. any source code (software and/or firmware) is owned by cypress semiconductor corporation (cypress) and is protected by and subj ect to worldwide patent protection (united states and foreign), united states copyright laws and internatio nal treaty provisions. cypress hereby grants to licensee a personal, non-exclusive, non-transferable license to copy, use, modify, create derivative works of, and compile the cypress source code and derivative works for the sole purpose of creating custom software and or firmware in su pport of licensee product to be used only in conjunction with a cypress integrated circuit as specified in the applicable agreement. any reproduction, modification, translation, compilation, or repre sentation of this source code except as specified above is prohibited without the express written permission of cypress. disclaimer: cypress makes no warranty of any kind, express or implied, with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. cypress reserves the right to make changes without further notice to t he materials described herein. cypress does not assume any liability arising out of the application or use of any product or circuit described herein. cypress does not authori ze its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. the inclusion of cypress? prod uct in a life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies cypress against all charges. use may be limited by and subject to the applicable cypress software license agreement. sales, solutions, and legal information worldwide sales and design support cypress maintains a worldwide network of offices, solution center s, manufacturer?s representatives, and distributors. to find t he office closest to you, visit us at cypress.com/sales. products automotive cypress.com/go/automotive clocks & buffers cypress.com/go/clocks interface cypress.com/go/interface lighting & power control cypress.com/go/powerpsoc cypress.com/go/plc memory cypress.com/go/memory optical & image sensing cypress.com/go/image psoc cypress.com/go/psoc touch sensing cypress.com/go/touch usb controllers cypress.com/go/usb wireless/rf cypre ss.com/go/wireless psoc solutions psoc.cypress.com/solutions psoc 1 | psoc 3 | psoc 5

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