11 q-tech corporation - 10150 w. jefferson boulevard, culver city 90232 - tel: 310-836-7900 - fax: 310-836-2157 - www.q-t e c h . c o m class b+ products crystal clock oscillators 3.3 to 5.0vdc - 450khz to 85mhz class b+ products (revision -, april 2009) q-tech corporation introduction the commercial satellite industry has requested that smaller, lighter, less expensive oscillator products with shorter lead times be made available for minisatellites, microsatellites, nanosatellites and picosatellites. in addition some newer satellite programs are being created for short term space lives and do not need oscillators with the assurance of a 15-20 year life span. q-tech corporation, the industry leader in both class b and space rated hybrid crystal oscillators is pleased to advise that we have created a special category of product designated as class b+ for these applications. we have created these class b+ products for the discriminate users applications and needs using our small form mil qpl class b oscillators. you, the customer, can now pick and choose the style of clock oscillator you wish, whether you want a 100krad (si) high dose tolerant nsc 54act3301 (fact) or a standard class b qualified die, a swept quartz space qualified crystal or a class b cultured quartz crystal and/or a combination thereof in an oscillator product that otherwise utilizes class b qualified passive devices. q-tech offers several different screening options to allow you to choose the screening plan that best suits your needs. q-tech corporation does not guarantee the specific radiation hardness of its class b+ products but will provide the necessary active device component traceability to allow you to make your own decision and do your own testing and evaluation based upon your specific needs and requirements. initially we will begin this product offering in three of our leading miniature clock oscillator product lines: qt78 (m55310/27, /28 & /30) , qt88 (m55310/33 & /34) and qt92 (m55310/37 & /38). product will be available in 5.0 and 3.3 vdc from 450khz to 85mhz. please consult the factory if you would like to know if this option is available in other standard q-tech class b product lines or if you have any other specific oscillator needs that we can help you with. features made in the usa eccn: ear99 dfars 252-225-7014 compliant: electronic component exemption usml registration m17677 broad frequency range from 450khz to 85mhz rugged 4 point mount design for high shock and vibration acmos, hcmos, ttl or lvhcmos logic tri-state output option (d) hermetically sealed ceramic smd package fundamental and 3rd overtone designs low phase noise custom designs available q-tech does not use pure lead or pure tin in its products rohs compliant see website for link to rad test data.
2 q-tech corporation - 10150 w. jefferson boulevard, culver city 90232 - tel: 310-836-7900 - fax: 310-836-2157 - www.q-t e c h . c o m class b+ products (revision -, april 2009) electrical characteristics class b+ products crystal clock oscillators 3.3 to 5.0vdc - 450khz to 85mhz q-tech corporation parameters qtx78ac qtx88ac qtx92ac qtx78hc qtx88hc qtx92hc qtx78t qtx88t qtx92t qtx78l qtx88l qtx92l output frequency range (fo) qtx78 450khz 85.000mhz 450khz 70.000mhz qtx88 & qtx92 500khz 85.000mhz 500khz 70.000mhz supply voltage (vdd) 5.0vdc 10% 3.3vdc 10% maximum applied voltage (vdd max.) -0.5 to +7.0vdc frequency stability (f/t) see option codes operating temperature (topr) see option codes storage temperature (tsto) -62c to + 125c operating supply current (idd) (no load) 20 ma max. - 450khz < 16mhz 25 ma max. - 16mhz < 32mhz 35 ma max. - 32mhz < 60mhz 45 ma max. - 60mhz 85mhz 3 ma max. - 450khz < 500khz 6 ma max. - 500khz < 16mhz 10 ma max. - 16mhz < 32mhz 20 ma max. - 32mhz < 60mhz 30 ma max. - 60mhz < 70mhz symmetry (50% of ouput waveform or 1.4vdc for ttl) 45/55% max. - 450khz < 15mhz 40/60% max. - 15 85mhz (tighter symmetry available) 45/55% max. - 450khz < 15mhz 40/60% max. - 15 70mhz (tighter symmetry available) rise and fall times (with typical load) 6ns max. - fo < 30mhz 3ns max. - fo 30 - 85mhz (between 10% to 90%) 7ns max. - fo < 30mhz 3ns max. - fo 30 - 85mhz (between 10% to 90%) 5ns max. - fo < 30mhz 3ns max. - fo 30 - 85mhz (between 0.8v to 2.0v) 6ns max. - 450khz < 40mhz 3ns max. - 40 70mhz (between 10% to 90%) output load 15pf // 10kohms 50pf max. or 10ttl for (fo < 60mhz) 30pf max. or 6ttl for (fo 60mhz) 15pf // 10kohms (2lsttl) 10ttl (fo < 60mhz) 6ttl (fo 60mhz) 15pf // 10kohms (30pf max. for f 50mhz) start-up time (tstup) 5ms max. output voltage (voh/vol) 0.9 x vdd min.; 0.1 x vdd max. 2.4v min.; 0.4v max. 0.9 x vdd min.; 0.1 x vdd max. output current (ioh/iol) 24ma max. 8ma max. -1.6 ma/ttl +40 a/ttl 4ma max. enable/disable tristate function pin 1 vih 2.2v oscillation; vil 0.8v high impedance jitter rms 1 (at 25c) 8ps typ. - < 40mhz 5ps typ. - 40mhz 15ps typ. - < 40mhz 8ps typ. - 40mhz aging (at 70c) 5ppm max. first year / 2ppm max. per year thereafter
33 q-tech corporation - 10150 w. jefferson boulevard, culver city 90232 - tel: 310-836-7900 - fax: 310-836-2157 - www.q-t e c h . c o m class b+ products crystal clock oscillators 3.3 to 5.0vdc - 450khz to 85mhz class b+ products (revision -, april 2009) q-tech corporation packaging options other options available for an additional charge ordering information frequency stability vs. temperature codes may not be available in all frequencies. for non-standard requirements, contact q-tech corporation at sales@q-tech.com specifications subject to change without prior notice. standard packaging in anti-static plastic tube (60pcs/tube) tape and reel is available for an additional charge. solder dip sn/pb 60/40% p. i. n. d. test qt178xx - d - xx - x - 85.000mhz output frequency blank m b s 1 = 100ppm at 0c to +70c 4 = 50ppm at 0c to +70c 5 = 25ppm at -20c to +70c 6 = 50ppm at -55c to +105c 9 = 50ppm at -55c to +125c 10 = 100ppm at -55c to +125c 11 = 50ppm at -40c to +85c 12 = 100ppm at -40c to +85c 14 = 20ppm at -20c to +70c 15 = 25ppm at -40c to +85c tristate option d (left blank if no tristate) 0.170 max. 0.018.003 (0.460.08) (4.318 max.) 0.550.0.005 (13.9700.13) 0.3500.005 (8.890.13) 0.100.005 0.200.005 (2.540.13) (5.0800.13) (7.6200.13) (9.5250.13) p/n freq. d/c s/n q-tech 4 3 1 2 .130 max. 0.300.005 0.3750.005 3.302 max. package specifications and outline dimensions are in inches (mm) 44 q-tech corporation - 10150 w. jefferson boulevard, culver city 90232 - tel: 310-836-7900 - fax: 310-836-2157 - www.q-t e c h . c o m class b+ products crystal clock oscillators 3.3 to 5.0vdc - 450khz to 85mhz class b+ products (revision -, april 2009) q-tech corporation screening test description standard method condition quantity comments blank m b s non destructive bond pull 883 2023 100% 2.4 grams internal visual 883 2017 class h 100% stabilization bake 883 1008 c 100% 48 hours at 150'c temperature cycling 883 1010 b (for m) c (for b & s) 100% 10 cycles constant acceleration 883 2001 a 100% y1 direction only particle impact noise detection (pind) 883 2020 b 100% 5 passes minimum (see note 1) pre burn-in electrical refer to table i and detail specification 100% burn-in #1 883 1015 125c for 160 hours 100% (see note 2) interim electrical refer totable i, ii and detail specification 100% burn-in #2 883 1015 125 c for 160 hours 100% (see note 2) final electrical refer to detail specification ................... (for blank) refer to table i and detail specification ....... (for m) refer to table i and detail specification ....... (for b) refer to table i, ii and detail specification ... (for s) 100% seal: fine leak 883 1014 a1 100% seal: gross leak 883 1014 c 100% radiographic inspection 883 2012 class s 100% frequency aging 30days mil-prf-55310 - 70 c 100% 1.5ppm max. (see note 3) frequency/temperature stability mil-prf-55310 measure the output frequency at ten equispaced points minimum of the specified operating temperature range external visual 883 2009 100% parameters pre bi at 25oc pre bi low t pre bi high t interim bi at 25oc post bi at 25oc post bi low t post bi high t m b s m b s m b s m b s m b s m b s m b s output frequency frequency/temperature stability frequency/voltage stability input current output voltage waveform duty cycle (symmetry) rise and fall times start up time test parameter symbol delta limits burn-in (second 160 hours burn-in period) supp current cc 10 of nta readng frequency aging after 30 days at +70c utput requenc o refer to deta spec. screening test table table i electrical test - measurement requirements (applicable to screening level m, b, & s only) table ii delta limits (applicable to screening level s only) 1. pind testing shall be performed using five (5) independent passes and all failures found at the end of each pass are rejected. the survivors of the last pass are acceptable. 2. burn-in shall be under the specified load and nominal voltage conditions. 3. normally, frequency aging tests are for 30 days. however, the frequency aging test may be ceased if after 15 days the measured aging rate is less than half of the specified aging rate.
55 q-tech corporation - 10150 w. jefferson boulevard, culver city 90232 - tel: 310-836-7900 - fax: 310-836-2157 - www.q-t e c h . c o m class b+ products crystal clock oscillators 3.3 to 5.0vdc - 450khz to 85mhz class b+ products (revision -, april 2009) q-tech corporation reflow profile environmental specifications the five transition periods for the typical reflow process are: preheat flux activation thermal equalization reflow cool down 0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 400 420 time (s) 25 50 75 100 125 150 175 200 225 250 temp(*c) 0 60s min. 120s max. 60s min. 120s max. 225o min. 240o max. 60s min. 150s max. 240o ramp down (6o/s max) ramp up (3o/s max) typical reflow profile for sn-pb assembly q-tech standard screening/qci (mil-prf55310) is available for all of our qtx78 products. q-tech can also customize screening and test procedures to meet your specific requirements. the qtx78 product is designed and processed to exceed the following test conditions: environmental test test conditions temperature cycling mil-std-883, method 1010, cond. b or cond. c constant acceleration mil-std-883, method 2001, cond. a, y1 seal fine leak mil-std-883, method 1014, cond. a burn-in 160 hours, 125c with load aging 30 days, 70c, 1.5ppm max vibration sinusoidal mil-std-202, method 204, cond. d shock, non operating mil-std-202, method 213, cond. i (see note 1) thermal shock, non operating mil-std-202, method 107, cond. b ambient pressure, non operating mil-std-202, 105, cond. c, 5 minutes dwell time minimum resistance to solder heat mil-std-202, method 210, cond. b moisture resistance mil-std-202, method 106 terminal strength mil-std-202, method 211, cond. c resistance to solvents mil-std-202, method 215 solderability mil-std-202, method 208 esd classification mil-std-883, method 3015, class 1hbm 0 to 1,999v moisture sensitivity level j-std-020, msl=1 note 1: additional shock results successfully passed on 16mhz, 40mhz, and 80mhz shock 850g peak, half-sine, 1 ms duration (mil-std-202, method 213, cond. d modified) shock 1,500g peak, half-sine, 0.5ms duration (mil-std-883, method 2002, cond. b) shock 36,000g peak, half-sine, 0.12 ms duration (qtx88 & qtx92) please contact q-tech for higher shock requirements embossed tape and reel information dimensions are in mm. tape is compliant to eia-481-a. reel size vs. quantity: feeding (pull) direction ?13.00.5 2.5 5o max ?1.5 2.0 1.750.1 0.3.005 ?1.5 2.00.1 5.50.1 4.00.1 ?1781 or ?3301 26 24.00.3 160.1 120o b a c qt a b c qtx78 10.01 0.1 14.53 0.1 4.80 0.1 qtx88 & qtx92 7.747 0.1 9.271 0.1 4.699 0.1 reel size (diameter in mm) qty per reel (pcs) qtx78 qtx88, qtx92 178 250 150 330 1000 800
66 q-tech corporation - 10150 w. jefferson boulevard, culver city 90232 - tel: 310-836-7900 - fax: 310-836-2157 - www.q-t e c h . c o m class b+ products crystal clock oscillators 3.3 to 5.0vdc - 450khz to 85mhz class b+ products (revision -, april 2009) q-tech corporation vdd gnd 0.1xvdd 0.9xvdd voh vol tr tf th t 0.5xvdd symmetry = x 100% th t output waveform (typical) frequency vs. temperature curve test circuit - - output ground 4 3 2 0.1f 15pf 1 tristate function power supply 10k ma vdc + + + (*) or 0.01f qt78 (*) cl includes probe and jig capacitance typical test circuit for cmos logic -5 -4 -3 -2 -1 0 1 2 3 4 5 -50 -40 -30 -20 -10 0 10 20 30 40 50 -55 -45 -35 -25 -15 -5 5 15 25 35 45 55 65 75 85 95 105 115 125 frequency stability (ppm) temperature (c) frequency-temperature curve qtx88ld9m-48.21mhz 45o 45o hybrid case substrate die d/a epoxy d/a epoxy heat die r1 d/a epoxy substrate d/a epoxy hybrid case r2 r3 r4 r5 thermal characteristics ja jc ca die t t t c a j ca jc (figure 1) (figure 2) the tristate function on pin 1 has a built-in pull-up resistor typical 50k, so it can be left floating or tied to vdd without deteriorating the electrical performance. the heat transfer model in a hybrid package is described in figure 1. heat spreading occurs when heat flows into a material layer of increased cross-sectional area. it is adequate to assume that spreading occurs at a 45 angle. the total thermal resistance is calculated by summing the thermal resistances of each material in the thermal path between the device and hybrid case. rt = r1 + r2 + r3 + r4 + r5 the total thermal resistance rt (see figure 2) between the heat source (die) to the hybrid case is the theta junction to case (theta jc) inc/w. theta junction to case (theta jc) for this product is 30c/w. theta case to ambient (theta ca) for this part is 100c/w. theta junction to ambient (theta ja) is 130c/w. maximum power dissipation pd for this package at 25c is: pd(max) = (tj (max) ta)/theta ja with tj = 175c (maximum junction temperature of die) pd(max) = (175 25)/130 = 1.15w
77 q-tech corporation - 10150 w. jefferson boulevard, culver city 90232 - tel: 310-836-7900 - fax: 310-836-2157 - www.q-t e c h . c o m class b+ products crystal clock oscillators 3.3 to 5.0vdc - 450khz to 85mhz class b+ products (revision -, april 2009) q-tech corporation phase noise is measured in the frequency domain, and is expressed as a ratio of signal power to noise power measured in a 1hz bandwidth at an offset frequency from the carrier, e.g. 10hz, 100hz, 1khz, 10khz, 100khz, etc. phase noise measurement is made with an agilent e5052a signal source analyzer (ssa) with built-in outstanding low-noise dc power supply source. the dc source is floated from the ground and isolated from external noise to ensure accuracy and repeatability. in order to determine the total noise power over a certain frequency range (bandwidth), the time domain must be analyzed in the frequency domain, and then reconstructed in the time domain into an rms value with the unwanted frequencies excluded. this may be done by converting l(f) back to s(f) over the bandwidth of interest, integrating and performing some calculations. the value of rms jitter over the bandwidth of interest, e.g. 10khz to 20mhz, 10hz to 20mhz, represents 1 standard deviation of phase jitter contributed by the noise in that defined bandwidth. figure below shows a typical phase noise/phase jitter of a qtx78ac6, 5.0vdc, 80mhz clock at offset frequencies 10hz to 5mhz, and phase jitter integrated over the bandwidth of 12khz to 1mhz. phase noise and phase jitter integration period jitter as data rates increase, effects of jitter become critical with its budgets tighter. jitter is the deviation of a timing event of a signal from its ideal position. jitter is complex and is composed of both random and deterministic jitter components. random jitter (rj) is theoretically unbounded and gaussian in distribution. deterministic jitter (dj) is bounded and does not follow any predictable distribution. dj is also referred to as systematic jitter. a technique to measure period jitter (rms) one standard deviation (1) and peak-to-peak jitter in time domain is to use a high sampling rate (>8g samples/s) digitizing oscilloscope. figure shows an example of peak-to-peak jitter and rms jitter (1) of a qtx78ac-24mhz, at 5.0vdc. rms jitter (1): 5.37ps peak-to-peak jitter: 43ps symbol definition l(f) integrated single side band phase noise (dbc) s (f)=(180/)x 2 l(f)df spectral density of phase modulation, also known as rms phase error (in degrees) rms jitter = s (f)/(fosc.360) jitter(in seconds) due to phase noise. note s (f) in degrees.
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