osc-15802 synchro/resolver/inductosyn ? reference oscillator description the osc-15802 is a power oscillator with two outputs that are 90 out of phase. these outputs provide both the reference and quadrature signals, simultaneously, making the osc- 15802 ideally suited for synchro, resolver, linear variable differential transformer (lvdt), rotary variable differential transformer (rvdt) and inductosyn applications. the oscillator?s outputs are pin-pro- grammable for both frequency and amplitude. the output frequency can be programmed from 400 hz to 10 khz by simply connecting two exter- nal capacitors. the reference output voltage, 7 vrms, can be scaled down by connecting a single resistor. applications packaged in an 18-pin hermetic ddip, the osc-15802 operates over a tem- perature range of -55c to +125c. this, combined with its small size and programmable output voltage and fre- quency capabilities, makes it an excellent choice for synchro, resolver, lvdt, rvdt and inductosyn applica- tions. features ? adi alternate source ? quadrature reference output voltages for inductosyn applications ? programmable output frequency to 10 khz ? small 18-pin ddip ? scalable reference output ? -55c to +125c operating temperature range quad oscillator - + +15 vdc gnd -15 vdc g = +2.8 pa out 5350 pa in rext cext cext ref out c1 c2 ref out +90? figure 1. osc-15802 block diagram ? 1981, 1999 data device corporation ? inductosyn is a registered trademark of farrand controls corporation.
2 data device corporation www.ddc-web.com osc-15802 h-11/06-0 programmable frequency output the output frequency of the osc-15802 is programmable to 10 khz. the frequency is programmed using two external equal value capacitors (see figure 2). the value of the capacitors (c ext ) is calculated as follows: 10 7 c ext = f where: c ext is capacitance in picofarads (use npo ceramic), f is frequency in hertz. to scale down the pa out voltage, an external resistor (r ext ) is connected between pins 3 and 7. the value of r ext is calculated as follows: 37.5 r ext = v out where: r ext is in kohms, v out is the desired voltage in vrms. for connection to converters connect as follows: ref lo (rl) connect to pin 16 ref hi (rh) connect to pin 13 or 12. table 1. osc-15802 specifications specifications apply over temperature range and power supply range. parameter units value frequency hz programmable from 400 to 10k outputs pa out voltage current ref voltage current ref +90 voltage current protection v rms ma rms v rms ma rms v rms ma rms 7 1% for 2.5 v pa input 190ma rms max 2.5 10% continuous current 3ma rms max 2.5 10% continuous current 3ma rms max. momentary short circuit and tran- sient proof (1 sec. max.) power supplies voltage current max voltage without damage vdc ma vdc 15 5% 20 max plus current load 18 temperature range operating -10x -30x storage c c c -55 to +125 0 to +70 -65 to +150 physical characteristics size weight (max) in (mm) oz (gm) 1.0 x 0.8 x 0.2 (25.45 x 20.32 x 4.83) 18 pin ddip 0.4 (11.3) osc-15801 + 15 vrl - 15 v pa out (ref) (rh 1 ) 1,3 pa in rext cext cext ref out 2 c1 c2 ref out - 9 0? (rh 2 ) 1,3 13 15 16 18 11 10 3 7 6 c2 12 notes: 1. output low side is pin 16 "gnd" 2. pin 7. ref out is the unbuffered output of the oscillator 3. rh 1 = typical connection to rd converter ref hi. rh 2 = low power - 9 0 degree phase shifted signal for use with inductosyns. osc-15802 +15 v (rl) 3 -15 v pa in rext cext cext ref out 2 c1 c2 ref out + 9 0? 13 15 16 18 11 12 3 7 6 c2 pa out (ref) (rh 1 ) 1,3 (rh 2 ) notes: 1. output low side is pin 16 "gnd" 2. pin 7, ref out is the unbuffered output of the oscillator 3. rh 1 = typical connection to rd converter ref hi. rh 2 = low power + 9 0 degree phase shifted signal for use with inductosyns. figure 2. programming resistor and capacitor connections - 5.35
3 data device corporation www.ddc-web.com osc-15801 k-11/06-0 inductosyn ? typical connection a linear or rotary inductosyn ? consists of a slider and a scale. as the slider moves over the scale there is a low voltage electrical output proportional to the distance moved. inductosyns usually are excited by a 5 khz to 20 khz frequency. the osc-15802 is an oscillator that was designed with a high frequency output and a +90 phase shift, which is needed for inductosyn?-to-digital con- version (see figure below). the figure below will convert each pitch to 360 of digital data. a means to track counts will be needed for multiple pitches. using an rd-19230 and a quad b zero index pulse for counting pitches is one possible solution. note that inductosyns typically have a + or - 90 degree phase shift from input to output. this requires an oscillator with a 90 degree phase shifted second ouptut to be connected to the rd convert- er reference so that the rd input and reference will now be in phase. ddc has two oscillators to cover the +90 or -90 phase shift need- ed. see the osc-15801 for -90 phase shift and the osc-15802 for +90 phase shift. note: see ddc?s synchro/resolver conversion handbook ?using an r/d with an inductosyn? for further information. resolver to digital converter digital output dual matched inductosyn preamps inductosyn scale quadrature power oscillator shift 9 0 ? phase quadrature output inductosyn slider rh rl chassis ground circuit ground 2 vrms osc-15802 pa out ref out + 9 0 inductosyn ? -to-digital converter system
4 data device corporation www.ddc-web.com osc-15802 h-11/06-0 0.190 max (4.83) 0.180 (4.57) 0.018 0.002 (0.46 0.05) 8 eq. sp. @ 0.100 = 0.800 tol noncum (@ 2.54 = 20.32) 1.002 max (25.45) 0.800 max (20.32) 0.600 (15.24) 0.010 0.002 typ (0.25 0.05) 0.040 typ (1.02) 0.100 typ (2.54) 0.035 typ (0.89) top view side view 1 9 10 18 pin 1 index figure 3. osc-15802 mechanical outline table 2. osc-15802 pin functions pin name function 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 nc nc pa i n nc nc c1 ref out nc nc nc c2 ref out +90 pa out nc -15 v gnd nc +15 v no connection no connection power amplifier input no connection no connection capacitor connection (pin-programmable freq) reference output no connection no connection no connection capacitor connection (pin-programmable freq) +90 reference output signal power amplifier output no connection -15 vdc power supply voltage ground no connection +15 vdc power supply voltage notes: 1. dimensions shown are in inches (mm). 2. lead cluster shall be centralized within 0.010 (2.54) of outline dimensions. 3. pin material meets solderability requirements of mil-std-202e, method 208c. 4. pin numbers are for reference only. note : nc pins have no connection in package.
5 data device corporation www.ddc-web.com osc-15802 h-11/06-0 ordering information osc-15802 -xx0x supplemental process requirements: s = pre-cap source inspection l = pull test q = pull test and pre-cap inspection blank = none of the above process requirements: 0 = standard ddc processing, no burn-in 1 = mil-prf-38534 compliant 3 2 = b 1 3 = mil-prf-38534 compliant with pind testing 3 4 = mil-prf-38534 compliant with solder dip 2,3 5 = mil-prf-38534 compliant with pind testing and solder dip 2,3 6 = b 1 with pind testing 7 = b 1 with solder dip 2 8 = b 1 with pind testing and solder dip 2 9 = standard ddc processing with solder dip, no burn-in temperature grade/data requirements: 1 = -55c to +125c 2 = -40c to +85c 3 = 0c to +70c 4 = -55c to +125c with variables test data 5 = -40c to +85c with variables test data 8 = 0c to +70c with variables test data notes: 1. standard ddc processing with burn-in and full temperature test. see table below. 2. these products contain tin-lead solder finish as applicable to solder dip requirements. 3. mil-prf-38534 product grading is designated with the following dash numbers: class h is a -11x, 13x, 14x, 15x, 41x, 43x, 44x, 45x class g is a -21x, 23x, 24x, 25x, 51x, 53x, 54x, 55x class d is a -31x, 33x, 34x, 35x, 81x, 83x, 84x, 85x notes: 1. for process requirement b* (refer to ordering information), devices may be non-compliant with mil-std-883, test method 1015, paragraph 3.2. contact factory for details. 2. when applicable. standard ddc processing for hybrid and monolithic hermetic products mil-std-883 test method(s) condition(s) inspection 2009, 2010, 2017, and 2032 seal 1014 a and c temperature cycle 1010 c constant acceleration 2001 3000g burn-in 1015, (note 1) 1030 (note 2) table 1
6 the information in this data sheet is believed to be accurate; however, no responsibility is assumed by data device corporation for its use, and no license or rights are granted by implication or otherwise in connection therewith. specifications are subject to change without notice. please visit our web site at www.ddc-web.com for the latest information. osc-15802 h-11/06-0 printed in the u.s.a. data device corporation registered to iso 9001:2000 file no. a5976 r e g i s t e r e d f i r m ? u 105 wilbur place, bohemia, new york, u.s.a. 11716-2426 for technical support - 1-800-ddc-5757 ext. 7771 headquarters, n.y., u.s.a. - tel: (631) 567-5600, fax: (631) 567-7358 southeast, u.s.a. - tel: (703) 450-7900, fax: (703) 450-6610 west coast, u.s.a. - tel: (714) 895-9777, fax: (714) 895-4988 united kingdom - tel: +44-(0)1635-811140, fax: +44-(0)1635-32264 france - tel: +33-(0)1-41-16-3424, fax: +33-(0)1-41-16-3425 germany - tel: +49-(0)8141-349-087, fax: +49-(0)8141-349-089 japan - tel: +81-(0)3-3814-7688, fax: +81-(0)3-3814-7689 world wide web - http://www.ddc-web.com
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