Make sure the next Card you purchase has... DSC-11520 16-BIT PIN PROGRAMMABLE D/S OR D/R CONVERTER (R) FEATURES * Complete D/S or D/R Converter * Accuracy: to 1 Minute * 0.1 % Scale Factor Variation with Angle * DC-Coupled Reference Accepts Any Waveform * Generates SIN/COS DC or Rotating PPI Sweep * High-Rel CMOS D/R Chip * 8-Bit/2-Byte Double-Buffered Transparent Latches DESCRIPTION The DSC-11520 is a versatile multiplying Digital-to-Synchro/Resolver converter. The digital input represents an angle and the output is pin programmable for either resolver type SIN/COS or for three-line synchro output. The reference input will accept any waveform, even a sawtooth for CRT drive. Because the reference is DC-coupled to the output, the DSC-11520 can be used in many configurations: With a synchro or resolver reference input, the DSC-11520 is a Digital-to-Synchro or Digital-to-Resolver converter. With a DC reference input, the unit can be used as a hybrid Digital-to-SIN/COS DC converter. With the reference input proportional to the radius vector, the DSC-11520 converts polar to rectangular coordinates. With a sawtooth reference input and a rotating digital input, the module can generate a cartwheel rotating sweep for PPI displays. Packaged in a 36-pin double DIP, the DSC-11520 is a complete D/S and D/R converter in one hybrid module. The DSC-11520 features low weight, low power consumption, very high reliability, and a wide operating temperature range. The circuit design results in high accuracy and reduces the output scale factor so that the output can drive displays directly. The output line-to-line voltage can be scaled by external resistors. The reference input provides high AC and DC common mode rejection. APPLICATIONS Because of its high reliability, small size and low power consumption, the hybrid DSC-11520 is ideal for the most stringent and severe industrial and military ground or avionics applications. All units are available with MIL-PRF38534 processing as a standard option. Among the many possible applications are computer based systems in which digital information is processed, such as simulators, flight trainers, flight instrumentation, fire control systems, radar and navigation systems, and PPI displays including moving target indicators. Data Device Corporation 105 Wilbur Place Bohemia, New York 11716 631-567-5600 Fax: 631-567-7358 www.ddc-web.com FOR MORE INFORMATION CONTACT: Technical Support: 1-800-DDC-5757 ext. 7771 All trademarks are the property of their respective owners. (c) 1985, 1999 Data Device Corporation Data Device Corporation www.ddc-web.com TEST POINT - R REF INPUTS 100 k RH 26 V D/R CONVERTER 100 k +S S1 RL 5 k ADJUSTABLE 1.3-26 V RH' 5 k REFERENCE CONDITIONER RL' HIGH ACCURACY LOW SCALE FACTOR VARIATION +C BITS 1-16 2 TRANSPARENT LATCH TRANSPARENT LATCH LA LM BITS 1-8 BITS 9-16 ELECTRONC SCOTT-T OR RESOLVER SCALING OUTPUT AMPLIFIERS S2 S2' S3 S3' LL DIGITAL INPUT DSC-11520 K-05/04-0 FIGURE 1. DSC-11520 BLOCK DIAGRAM SYNCHRO OR RESOLVER OUTPUT (PIN JUMPER PROGRAMMABLE) INTRODUCTION TABLE 1. DSC-11520 SPECIFICATIONS Apply over temperature range, power supply ranges, reference voltage and frequency range and 10% harmonic distortion in the reference. PARAMETER VALUE RESOLUTION 16 bits ACCURACY AND DYNAMICS Output Accuracy Differential Linearity Output Settling Time 8 minutes to 1 min. (See Ordering Info.) 1 LSB max Less than 20 sec for any digital step change. DIGITAL INPUT Logic Type Logic Voltage Level VL Load Current REFERENCE INPUT Type Frequency Range Voltage Natural binary angle parallel positive logic CMOS and TTL compatible. Inputs are CMOS transient protected. Each input has a 20 A max pull down to GND. V = +4.5 V to +15 V supply Logic 0 = 0 to +0.25 VL Logic 1 = 0.4 VL to VL 20 A max to GND (bit 1-16) 20 A to VL (LL, LM, LA) See Timing Diagram (FIGURE 2) The reference conditioner has a differential input with high AC and DC common-mode rejection, so that a reference isolation transformer will seldom be required. There are two sets of reference inputs. The RH, RL input provides the maximum synchro or resolver output voltage for a standard 26 V rms reference input. The RH', RL' input is used to scale the output for other reference voltage levels. Series resistors can be added to the reference input as described below either to accommodate lower reference levels for full output, or to reduce the output level. Two differential solid-state inputs, one for standard 26 V input and one programmable. DC to 1000 Hz Standard Input Programmable input 26 V 10% 1.3 V min for full output; higher voltages are scaled by adding two series resistors Input Impedance Single Ended Differential 100 k 0.5% 200 k 0.5% ANALOG OUTPUT Type Output current Max Output Voltage (Tracks Reference Input Voltage) Pin programmable for synchro or resolver mode. 2 mA rms max. 11.8 V rms L-L 0.25%nominal in synchro mode 6.81 V rms L-L 0.25%nominal resolver mode Transformation Ratio Tol. Scale Factor Variation DC Offset Each Line to GND 0.5% max 0.1% max 15 mV standard, varies with input angle 5 mV available- Consult Factory POWER SUPPLIES Voltage Voltage Limits Max Voltage Without Damage Current or impedance As shown in the block diagram, the signal conversion in the DSC11520 is performed by a high accuracy Digital-to-Resolver converter whose SIN and COS outputs have a low scale factor variation as a function of the digital input angle. This resolver output is either amplified by scaling amplifiers for resolver output, or is both amplified and converted to a synchro output by an electronic Scott-T. In both cases, the output line currents are limited to 2 mA rms max, which is sufficient for driving S/D converters, solid-state control transformers, and displays. Output power amplifiers will be required, however, for driving electro-mechanical devices such as synchros and resolvers. The reference conditioner output -R is intended for test purposes. A signal between 6 V and 7.5 V at -R indicates that a reference input signal is present. 5 k 0.5% 10 k 0.5% OUTPUT SCALING AND REF. LEVEL ADJUSTMENT +15 V 5% +18 V The DSC-11520 operates like a multiplying D/A converter in that the voltage of each output line is directly proportional to the reference voltage. The maximum line-to-line levels are determined by the output amplifiers and are nominally 11.8 V for synchro output and 6.81 V for resolver output.The RH, RL reference input is designed to provide this nominal output for the standard 26 V reference level. The scaling adjustment is made by two internal 100 k resistors in series with the reference conditioner input (see DSC-11520 Block Diagram). The maximum output levels without distortion are 10% greater than the nominal 11.8 V and 6.81 V levels. -15 V 5% -18 V 20 mA max 20 mA max No VL required; +5 V logic levels are derived internally. TEMPERATURE RANGES (CASE) Operating -1 Option -3 Option Storage -55C to +125C 0C to +70C -55C to 135C PHYSICAL CHARACTERISTICS Type Size Weight 36-pin double DIP 0.78 X 1.9 X 0.21inch (2.0 X 4.8 X 0.53 cm) 0.85 oz (24g) The RH', RL' reference input has only 5 k internal resistors in series with the reference conditioner input, so that nominal lineto-line output is obtained for a reference input of 1.3 V. For higher reference voltages, two resistors R' must be inserted in series with the inputs as shown in FIGURE 2. These resistors scale the REF INPUT R' R' VR 11 9 RH' DSC-11520 RL' FIGURE 2. REFERENCE LEVEL ADJUSTMENT Data Device Corporation www.ddc-web.com 3 DSC-11520 K-05/04-0 200 nS min. TRANSPARENT LATCHED DATA 1-16 BITS 50 nS min. Data Changing 100 nS min. Data Stable FIGURE 3A. LL, LM, LA TIMING DIAGRAM (16-BIT) LA 200 nS min. 200 nS min. LM Bits (1-8) 200 nS min. LL Bits (9-16) 50 nS min. DATA 50 nS min. 100 nS min. 100 nS min. LA, LM, LL Transparent = Hi Latched = Lo Data Changing Data Stable FIGURE 3B. LL, LM, LA TIMING DIAGRAM (8-BIT) Data Device Corporation www.ddc-web.com 4 DSC-11520 K-05/04-0 DSC-11520 outputs down to the nominal 11.8 V and 6.81 V levels stated above, or to lower voltages if desired. The magnitude of the resistors R' in ohms is calculated as follows: R' = 5000 (VR - 1.3) 1.3 S1 S2 L-L VOLTAGE LEVEL ( NOMINAL DESIRED L-L VOLTAGE LEVEL ) DSC-11520 S2' S3 OUTPUT PHASING AND OUTPUT SCALE FACTOR S3' The analog output signals have the following phasing: Synchro output S1 -- S3 = (RH-RL) Ao (1 + A()) sin S3 -- S2 = (RH-RL) Ao (1 + A()) sin ( + 120) S2 -- S1 = (RH-RL) Ao (1 + A()) sin ( + 240) Resolver output S1 -- S3 = (RH-RL) Ao (1 + A()) sin S2 -- S4 = (RH-RL) Ao (1 + A()) cos 32 36 S3 S1 +SIN S2 33 35 35 DSC-11520 S2 36 +COS S3 34 S2' SYNCHRO OUTPUT 33 RESOLVER OUTPUT FIGURE 4. OUTPUT PIN PROGRAMMING TABLE 2. PIN CONNECTIONS The output amplitudes simultaneously track reference voltage fluctuations because they are proportional to (RH-RL). The transformation ratio Ao is 11.8/26 for 11.8 V rms L-L output. The maximum variation in Ao from all causes is 0.2%. The term A () represents the variation of the amplitude with the digital input angle. A (), which is called the scale factor variation, is a smooth function of without discontinuities and is less than 0.1% for all values of . The total maximum variation in Ao (1 + A()) is therefore 0.3%. PIN 1 2 3 4 5 6 7 8 9 10 11 12 Because the amplitude factor (RH-RL) Ao (1 + A()) varies simultaneously on all output lines, it will not be a source of error when the DSC-11520 is to drive a ratiometric system such as a synchro or resolver. However, if the outputs are used independently, as in X-Y plotters, the amplitude variations must be taken into account. FUNCTION NC +15 V GND -15 V NC NC -R RL RL' RH RH' BIT 14 PIN 13 14 15 16 17 18 19 20 21 22 23 24 FUNCTION BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT 13 12 11 10 9 8 7 6 5 4 3 2 PIN FUNCTION 25 26 27 28 29 30 31 32 33 34 35 36 BIT 1 (MSB) BIT 15 BIT 16 (LSB) LM LL LA NC S1 S2' S3' S3 (+SIN) S2 (+COS) Notes: 1.-R (PIN 7) can be used for test purposes to detect whether a reference signal is present. See block diagram. 2. Functions LL, LA and LM may be left unconnected when not used. DOT IDENTIFIES PIN 1 0.775 0.005 (19.7 0.13) 1.700 0.005 (43.2 0.13) 0.09 0.01 (2.3 0.25) BOTTOM VIEW 0.600 0.005 (15.2 0.13) 0.086 TYP RADIUS 0.10 0.01 (2.5 0.3) 1.895 0.005 (48.1 0.13) 0.21 MAX (5.3) SEATING PLANE NOTES: 1. Dimensions shown are in inches (millimeters). 2. Lead identification numbers are for reference only. 3. Lead cluster shall be centered within 0.10 of outline dimensions. Lead spacing dimensions apply only at seating plane. 4. Pin material meets solderability requirements of MIL-STD-202E, Method 208C. 5. Package is Kovar with electroless nickel plating. 6. Case is electrically floating. SIDE VIEW 0.055 (1.4) RAD TYP 0.015 MAX (0.39) 0.25 MIN (6.4) 0.100 TYP(2.54) TOL. NONCUMULATIVE 0.018 (0.46) DIAM TYP FIGURE 3B. LL, LM, LA TIMING DIAGRAM (8-BIT) Data Device Corporation www.ddc-web.com 5 DSC-11520 K-05/04-0 TABLE 3.ANGLES IN DEGREES CROSS REFERENCED TO A 16-BIT DIGITAL WORD 16 BIT DIGITAL WORD () (1 = MSB, 16 = LSB) DEGREES (HEX) 0 (0000) 15 (0AAB) 30 (1555) 45 (2000) 60 (2AAB) 75 (3666) 90 (4000) 120 135 180 240 270 285 300 (5555) (6000) (8000) (AAAB) (C000) (CAAB) (D555) 315 (E000) 330 (EAAB) 345 (F555) 359 (FFFF) Data Device Corporation www.ddc-web.com 1 2 3 4 5 6 7 8 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 0 1 1 1 1 0 0 1 1 1 0 1 1 1 1 1 0 0 1 0 1 0 0 0 0 0 0 0 1 0 0 0 1 1 0 0 1 0 1 0 1 1 0 1 1 0 1 0 0 11 0 1 0 0 0 0 0 1 01 0 1 1 1 0 0 1 01 0 0 0 0 1 0 1 0 01 1 0 1 0 1 0 0 1 0 1 0 0 0 0 0 1 0 1 0 1 1 1 0 0 1 01 0 0 0 0 0 1 0 1 0 01 1 0 1 0 1 0 0 1 0 1 0 0 0 0 0 1 1 0 0 1 1 1 0 0 1 0 1 0 0 0 0 1 0 0 0 1 0 1 0 1 1 1 1 0 0 1 1 10 0 0 1 0 1 0 0 0 1 0 1 1 1 0 1 0 0 1 0 1 6 9 10 11 12 13 14 15 16 0 0 0 0 0 1 1 0 0 0 0 1 1 1 0 0 0 1 0 0 0 0 0 0 1 0 0 0 1 1 0 1 0 10 0 1 1 0 1 1 0 1 0 0 1 0 1 0 0 0 0 0 1 1 0 0 1 1 1 0 0 1 0 1 0 0 0 0 1 0 1 0 0 1 1 0 1 1 1 0 1 1 0 1 0 0 1 0 1 1 1 0 1 1 1 DSC-11520 K-05/04-0 ORDERING INFORMATION DSC-11520-X X X Accuracy: 3 = 4 minutes 4 = 2 minutes 5 = 1 minutes Reliability Grade: 0 = Standard DDC procedures 1 = Fully Compliant with MIL-PRF-38534* 2 = Screened to MIL-PRF-38534 but without QCI testing* 3 = Fully Compliant with MIL-PRF-38534 + PIND Testing* 4 = Fully Compliant with MIL-PRF-38534 + Solder Dip* 5 = Fully Compliant with MIL-PRF-38534 + PIND Testing + Solder Dip* 6 = Screened to MIL-PRF-38534 + PIND Testing but without QCI Testing* 7 = Screened to MIL-PRF-38534 + Solder Dip but without QCI Testing* 8 = Screened to MIL-PRF-38534 + PIND Testing +Solder Dip but without QCI testing* Operating Temperature Range: 1 = -55C to +125C (case) 2 = -40C to +85C (case) 3 = 0C to +70C (case) 4 = -55C to +125C + Variables Data 5 = -40C to +85C + Variables Data 8 = 0C to +70C + Variables Data *Available in -55C to +125C temperature range only. 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 Notes: 1. For Process Requirement "B*" (refer to ordering information), devices may be non-compliant with MILSTD-883, Test Method 1015, Paragraph 3.2. Contact factory for details. 2. When applicable. Data Device Corporation www.ddc-web.com 7 DSC-11520 K-05/04-0 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. 105 Wilbur Place, Bohemia, New York, U.S.A. 11716-2482 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 Ireland - Tel: +353-21-341065, Fax: +353-21-341568 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 RM (R) I FI REG U ST ERED DATA DEVICE CORPORATION REGISTERED TO ISO 9001 FILE NO. A5976 K-05/04-0 8 PRINTED IN THE U.S.A.