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 oscillators 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 w 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 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. 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 input 190 min 2.5 10% 3 min 2.5 10% 3 min momentary short circuit and transient 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 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 (1) osc-15802 +15 v -15 v pa out (ref) pa in rext cext cext ref out c1 c2 ref out +90? 13 15 16 18 11 12 3 7 6 c2 figure 2. programming resistor and capacitor connections - 5.35
3 0.190 max (4.83) 0.240 (6.10) 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.
4 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. f1/dom rep mem 1455-07/99-0 printed in the u.s.a. ? 1015, table 1 burn-in a 2001 constant acceleration c 1010 temperature cycle a and c 1014 seal ? 2009, 2010, 2017, and 2032 inspection condition(s) method(s) test mil-std-883 standard ddc processing 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 2 = b* 3 = mil-prf-38534 compliant with pind testing 4 = mil-prf-38534 compliant with solder dip 5 = mil-prf-38534 compliant with pind testing and solder dip 6 = b* with pind testing 7 = b* with solder dip 8 = b* with pind testing and solder dip 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 *standard ddc processing with burn-in and full temperature test - see table below ilc data device corporation registered to iso 9001 file no. a5976 105 wilbur place, bohemia, new york 11716-2482 for technical support - 1-800-ddc-5757 ext. 7389 or 7413 headquarters - tel: (631) 567-5600 ext. 7389 or 7413, fax: (631) 567-7358 southeast - tel: (703) 450-7900, fax: (703) 450-6610 west coast - tel: (714) 895-9777, fax: (714) 895-4988 europe - tel: +44-(0)1635-811140, fax: +44-(0)1635-32264 asia/pacific - tel: +81-(0)3-3814-7688, fax: +81-(0)3-3814-7689 world wide web - http://www.ddc-web.com
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