general release document consult factory for current revision revisions revision description approved date - initial release luis vargas 6/5/2008 a updated part numbers luis vargas 1/9/09 specification contr ol drawing prepared by: date q - tech corporation 10150 w. jefferson blvd. culver city, ca 90232 - 3510 luis vargas 6/5/08 low profile 24 pin flat - pack hybrid crystal oscillator, tcxo, class s, standard design for hcmos up to 90mhz unless otherwise specified, dimensions are in inches. tolerances: 3 place decimal = .005 2 place decimal = .02 1 place decimal = .1 fractions = 1/16 angles = 2 degree s checked by: quality date drawing no.: qt81 1 and qt812 square - wave revision a release d by: document control approved by: engineering date scale none size a cage code 51774 sheet 1 of 8 -2.0 -1.5 -1.0 -0.5 0.0 0.5 1.0 1.5 2.0 -50 -45 -40 -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 temp, deg c freq error, ppm example 1 of temperature stability example 2 of temperature stability 50mhz tcxo ,vcc=12v,+25 c 9/17/08 -180 -170 -160 -150 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 1 10 100 1000 10000 100000 frequenc y offset, hz l(f), db c 0 0.05 0.1 0.15 0.2 0.25 0.3 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 frequency drift, ppm elapsed time, days aging data
qt81 1 and qt812 square - wave rev. q - tech corpor a tion 10150 w. jefferson blvd. culver city, ca 90232 size a cage no. 51774 sheet 2 of 8 a 1.0 scope this specification establishes the detail requirements for low profile hybrid, hermetically sealed, hcmos output temperature com pensated crystal oscillators (tcxo) for use in space flight missions . 2.0 applicable documents the following documents of the latest issue form a part of this drawing to the extent specified herein . 2.1 specifications and standards specifications milit ary mil - s - 19500 semiconductor devices, general specification for mil - prf - 55310 crystal oscillators, general specification for mil - prf - 38535 integrated circuits, (microcircuits) manufacturing, general specification for mil - prf - 38534 hybrid microcircuits , general specification for standards military mil - std - 202 test methods for electronic and electrical component parts mil - std - 883 test methods and procedures for microelectronics mil - std - 1686 electrostatic discharge control program for protection of e lectrical and electronics parts, assemblies and equipment. 2.2 conflicting r equirements in the event of conflict between requirements of this specification and other requirements of the applicable detail drawing, the precedence in which requirements sha ll govern, in descending order, is as fo l lows: a) applicable customer purchase order. b) applicable detail drawing. c) this specification. d) other specifications or standards referenced in 2.1 herein . 2.3 customer purchase order special requirements additional spec ial requirements shall be specified in the applicable customer purchase order when additional requirements or modifications specified herein are needed for co m pliance to special program or product line requir e ments . 3.0 performance requirem ents 3.1 gener al definition the tcxo is a high reliability signal generator that provides a s quare - wave output . the tcxo has been designed to operate in a spaceflight environment with an expected lifetime in excess of 15 years. lifetime is defined as the sum of operati onal and storage environments.
qt81 1 and qt812 square - wave rev. q - tech corpor a tion 10150 w. jefferson blvd. culver city, ca 90232 size a cage no. 51774 sheet 3 of 8 a 3.1.1 electrical characteristics parameter symbol conditions value unit frequency nom. fo - 2 . to 90 mhz supply voltage, nom. vs vs 5% see part number generation table v input current, max. is vs, nom. / ta=+25 c 50 ma freq. stability vs. temperature (including 5% load change and 5% input voltage change) contact factory for other options available see part number generation table ppm electrical frequency adjustment min. (when specified) via an external se lect - at - test resistor connected from pin 1 to ground 2) via external tuning voltage 5.0 ppm aging max 0.2 ppm short term stability contact factory for other options available 30 to 70 3rd 70.1 to 90 3 rd x mhz ou tput voh / vol load=15pf, vcc=nom. 0.9 vcc / 0.1 vcc v duty cycle dc load=15pf/ @50%vcc, ta=+25 c see part number generation table % rise - / fall time tr / tf 20%~80% vout, 80%~20% vout .5 7 (see note a) nsec load 15 pf phase noise @ freq. offset ( contact factory for other options available dbc/hz dbc/hz dbc/hz dbc/hz dbc/hz a: s upply current, rise & fall time are frequency dependent 3.2 abso lute maximum rating supply voltage 0 to +6.0 vdc dc input current 50 ma maximum storage temperature range - 62 c to +125 c lead temperature (soldering, 10 seconds) 300 c 3.2. 1 physical characteristics 3.2. 1 .1 dimensions - the tcxo outline dimensions a nd terminal connections shall be as shown in figure 1 herein. 3.2. 1 .2 weight - the tcxo shall weigh less than or equal to 15 grams. 3.2. 1 .3 materials - the tcxo package body and lead finish shall be gold in accordance with mil - prf - 38534.
qt81 1 and qt812 square - wave rev. q - tech corpor a tion 10150 w. jefferson blvd. culver city, ca 90232 size a cage no. 51774 sheet 4 of 8 a 3.2.2 environment al conditions sine vibration m il - std - 202, method 204, tc d random vibration m il - std - 202, method 214 tc i - k (15 minutes per axis) shock m il - std - 202, method 213, tc f acceleration mil - std - 883, method 2001, tc a altitude 50,000 feet minimum to dee p space radiation radiation testing is not performed, but these tcxos have been acceptable for use in environments up to 100k rads by analysis of the components used bipolar semiconductors are employed in combination with a cmos microcircuit in this part and shall be from a wafer proven to be radiation tolerant to 100 krad (si) total ionizing dose. this device is specified to be single event latchup free for let up to 93 mev - cm 2 /mg.. a copy of the parts list and materials can be provided for review. elect rostatic discharge sensitivity the tcxo supplied to this drawing shall be considered to be electrostatic di s charge sensitive and require further protection and shall use one of the packaging requirements in accordance with mil - prf - 38534, category a, sectio n 5.3.2.4 transportability . the tcxo shall be capable of being transported by air, ship or road when packaged in a suitable container . 3.3 design and construction the design and construction of the crystal oscillator shall be as specified herein. as a mi nimum, the oscillators shall meet the design and construction requirements of mil - prf - 55310, e x cept element evaluation shall be as specif ied in 3.3.1 . operation design, construction & component screen (see 3.3.2) m il - prf - 55310 class s workmanship m883 , method 2017 for class s screening mil - prf - 55310 class s non - destruct wire bond pull 100%, m883, method 2023 (2.4 grams) internal visual mil - std - 883, methods 2017 & 2032 condition k (class s) . during the time interval between final internal visual i nspection and prepar a tion for sealing, hybrid crystal oscillators shall be stored in a dry, controlled environment as defined in mil - std - 883, method 2017 or in a vacuum bake oven. stabilization bake 48 hrs minimum @ +150 c m883, method 1008 tc b thermal shock m883, method 1011, tc a temperature cycling m883, method 1010, tc b constant acceleration m883, method 2001, tc a (5000 gs, y1 axis only) seal test (fine & gross) 100% method 1014, (tc a1 for fine leak and tc c for gross leak) pind m883, met hod 2020, tc b electrical test frequency, output levels, input current@ +25 c burn - in (powered with load) +125 c for 240 hours electrical test frequency, output levels, input current @ +25 c & temp extremes listed on the electrical specification radi ographic m883, method 2012 class s group a 100% group b (30 day aging @ +70 c) 100% external visual 883 method 2009
qt81 1 and qt812 square - wave rev. q - tech corpor a tion 10150 w. jefferson blvd. culver city, ca 90232 size a cage no. 51774 sheet 5 of 8 a 3.3.1 all piece parts shall be derived from lots that meet the element evaluation requir e ments of mil - prf - 38534, class k, with the fo llowing exceptions: active elements a) visual inspection of silicon on sapphire microcircuits. semicircular crack(s) or multiple adjacent cracks, not in the active area, starting and terminating at the edge of the die are acceptable. attached (c hip in place) sapphire is nonconductive material and shall not be considered as foreign material and will be considered as nonconductive mat e rial for all inspection criteria. b) subgroup 4, scanning electron microscope (sem) inspection. the manufacturer m ay allow the die distributor, at his option, to select two (2) dice from a waffle pack (containing a maximum quantity of 100 die), visually i n spect for the worst case metallization of the 2 dice, and take sem photographs of the worst case. c) subgroup 5 r adiation tests. subgroup 5 radiation tests are not required unless otherwise spec i fied in the detail purchase order. 3.3 .2 processes - processes used for manufacturing the tcxo are selected on the basis of their ability to meet the quality requirements for space high reliability manufacturing. travelers or process cards are used in the manufacturing and testing of all of the tcxo series, and might be available for customer review. copies of these travelers can be provided with the tcxos at time of shipment , if so specified on the purchase order. 3.3.3 interchangeability - each tcxo shall be interchangeable without using a special selection process. 3.3. 4 product marking - each unit shall be permanently marked with the manufacturer's name or symbol, part numb er, lot date code number, and serial number. the unit shall be marked with the outline of an equilateral tr i angle near pin 1 to show that it contains devices which are sensitive to electrostatic discharge. 3.4 parts program devices delivered to this spec ification represent the standardized parts, materials and processes (pmp) program developed, implemented and certified for advanced applications and extended environments . 3.4.1 quartz crystal resonator - the crystal resonator used shall be constructed us ing premium synthetic swept quartz and procured to q - t ech scd . for the engineering models, non - swept quartz may be used. 3.5 traceability requirements material, element and process traceability requirements shall be as specified by mil - prf - 38534 for c lass k hybrids. 3.6 data 3.6.1. design documentation. when required by the purchase order, design, topography, process and flow charts for all assembly/inspection and test operation for devices to be supplied under this specification on the initial procurement shal l be established and shall be available in - plant for review by the procuring activity upon request. this design document a tion shall be sufficient to depict the physical and electrical construction of the devices supplied under the specification and shall be traceable to the specific parts, drawings or part type numbers to which it applies, and to the production lot(s) and inspection lot codes under which devices are manufactured and tested so that revisions can be identified.
qt81 1 and qt812 square - wave rev. q - tech corpor a tion 10150 w. jefferson blvd. culver city, ca 90232 size a cage no. 51774 sheet 6 of 8 a 3.6.2. technical data package. when required by the purchase order, the following d e sign documentation and information is deliverable 30 days prior to the start of production. the technical data package shall consist of the following: a) assembly drawing(s). b) all electrical schematics and drawi ngs not considered proprietary. c) the assembly and screening travelers to be used on - line to manufacture the devices supplied to this specification. d) parts and materials list. 3.7 test report a test report is supplied with each shipment of oscillators and includ es the following inform a tion, as a minimum: a) a certificate of conformance to all specifications and purchase order requirements. as a minimum, the ce r tificate of conformance shall include the following information: purchase order number applicable part num ber manufacturer s lot number lot date code b) parts and materials traceability information. c) certificate of crystal sweeping. d) manufacturing lot traveler. e) screening attributes and variables data as applicable. f) quality conformance inspection attributes and var iables data as applicable. g) radiographic inspection negatives. 3.8 e ngineering models engineering models are fit, form, and function representative of flight models and of commercial construction using commercial parts of same generic type as flight models. co mpleted oscillators are not screened. note s : this oscillator is offered to meet the specifications above and is not guaranteed to meet any other requirements .
qt81 1 and qt812 square - wave rev. q - tech corpor a tion 10150 w. jefferson blvd. culver city, ca 90232 size a cage no. 51774 sheet 7 of 8 a fluke 8050a com ma v volt- meter .01 uf .01 uf .01 uf vc vcc device under test out gnd tek2465b oscillo- scope vert signal out 15 pf (including probes) common hp6205c power supply amp- meter freq counter hp53181a ? part number generation engineering models are designated by adding "e" in front of the part number. series output type and supply voltage symmetry temperature range ( c) stability (overall) frequency (mhz) external tuning 1. hcmos .5.0v a: 40% 60% n: 0 +50 1 ppm x : no tuning 2. hcmos .3.3v t: (see note 2) p : 0 +70 1 ppm 2.000 90.000 (see note 1 ) r: external resistor q: 0 +70 2 ppm v: external voltage r: 0 +70 5 ppm u: - 20 +70 1 ppm v: - 20 +70 2 ppm w: - 20 +70 5 ppm x: - 40 +85 4 ppm y: - 40 +8 5 5 ppm z: - 40 +85 10 ppm qt81: 24 pin flat pack (see note 1 below) 1. variations from standard specification are available, please contact factory. 2. 45/55 symmetry contact factory for options available. example: the qt812au - 50. 000 000- r would be a hf t cxo, 24 pin smd flat pack, hcmos 3.3 volts, 40/60 symmetry, stability 1 ppm over - 20 +70 c, @ 5 0 mhz with external tuning via external resistor ? recommended electrical test diagram
qt81 1 and qt812 square - wave rev. q - tech corpor a tion 10150 w. jefferson blvd. culver city, ca 90232 size a cage no. 51774 sheet 8 of 8 a 22x .100 typ. 12 24 13 1 q-tech part number frequency d/c usa s/n .210 max. esd symbol for pin no. 1 24x .010 ?.002 .975 max. 1.275 max. non-accumulative 24x .015 ?003 2x 1.100 24x .072 ?.007 2x .500 min. 2x .085 ref. figure 1 interface control drawing 24 pin flat pak pin no. designation 1 external frequency adjustment (when specified) 2 - 11 nc 12 ground/case 13 rf output 14 - 23 nc 24 supply voltage notes: dimensions are in inches. lead numbers are for reference only and are not marked on the unit. a triangle symbol is ma rked on the corner of the package to indicate pin 1 all pins with nc function may not be connected as external tie or connections (pins may be connected internally) .
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