? semiconductor components industries, llc, 2004 january, 2004 ? rev. 3 1 publication order number: mc1403/d mc1403, b low voltage reference a precision band?gap voltage reference designed for critical instrumentation and d/a converter applications. this unit is designed to work with d/a converters, up to 12 bits in accuracy, or as a reference for power supply applications. ? output voltage: 2.5 v 25 mv ? input voltage range: 4.5 v to 40 v ? quiescent current: 1.2 ma typical ? output current: 10 ma ? temperature coefficient: 10 ppm/ c typical ? guaranteed temperature drift specification ? equivalent to ad580 ? standard 8?pin dip, and 8?pin soic package typical applications ? voltage reference for 8 to 12 bit d/a converters ? low t c zener replacement ? high stability current reference ? voltmeter system reference ? pb?free package is available maximum ratings (t a = 25 c, unless otherwise noted.) rating symbol value unit input voltage v i 40 v storage temperature t stg ?65 to 150 c junction temperature t j +175 c operating ambient temperature range mc1403b mc1403 t a ?40 to +85 0 to + 70 c c precision low voltage reference pdip?8 p1 suffix case 626 soic?8 d suffix case 751 nc nc nc nc 8 1 3 v out gnd 4 2 nc 7 v in 6 5 8 1 8 1 pin connections http://onsemi.com see detailed ordering and shipping information in the package dimensions section on page 6 of this data sheet. ordering information
mc1403, b http://onsemi.com 2 figure 1. a reference for monolithic d/a converters * caution: system stability may be affected if output capacitance * exceeds 1.0 f. using higher capacitance values is not * recommended and should be carefully considered. mc1403 1.0 k 3 2 1 + 5.0 v 1.2 k r3 i ref full scale adjust 500 monolithic d/a converter *0.1 f c1 r2 r1 reference amplifier providing the reference current for on semiconductor monolithic d/a converters the mc1403 makes an ideal reference for many mono- lithic d/a converters, requiring a stable current reference of nominally 2.0 ma. this can be easily obtained from the mc1403 with the addition of a series resistor, r1. a variable resistor, r2, is recommended to provide means for full? scale adjust on the d/a converter. the resistor r3 improves temperature performance by matching the impedance on both inputs of the d/a reference amplifier. the capacitor decouples any noise present on the reference line. it is essential if the d/a converter is located any appreciable distance from the reference. a single mc1403 reference can provide the required current input for up to five of the monolithic d/a converters. 2.5v electrical characteristics (v in = 15 v, t a = 25 c, unless otherwise noted.) characteristic symbol min typ max unit output voltage v out 2.475 2.5 2.525 v (i o = 0 ma) temperature coefficient of output voltage* v o / t ? 10 40 ppm/ c mc1403 output voltage change* v o mv (over specified temperature range) mc1403 b 0 to + 70 c mc1403b ?40 to + 85 c ? ? ? ? 7.0 12.5 line regulation (i o = 0 ma) reg line mv (15 v v i 40 v) (4.5 v v i 15 v) ? ? 1.2 0.6 4.5 3.0 load regulation reg load ? ? 10 mv (0 ma < i o < 10 ma) quiescent current i q ? 1.2 1.5 ma (i o = 0 ma) *guaranteed but not tested.
mc1403, b http://onsemi.com 3 figure 2. mc1403, b schematic 1.73k 1.5 k v out 32 1.483 k 10 k v in 2.0 k 2.0 k 30 pf c1 2.37 k 1.0 k 5.61 k 2.0 k 1.0 k 2.0 k this device contains 15 active transistors.
mc1403, b http://onsemi.com 4 v , change in v out (mv) d out v , change in v out (mv) d out -10 -12 t a , temperature ( c) 4.0 2.0 0 -2.0 -4.0 -6.0 -8.0 t a , temperature ( c) -12 -10 -8.0 -6.0 -4.0 -2.0 0 -14 figure 3. typical change in v out versus v in (normalized to v in = 15 v @ t c = 25 c) figure 4. change in output voltage versus load current (normalized to v out @ v in = 15 v, i out = 0 ma) v in , input voltage (v) 2.0 1.0 0 -1.0 -2.0 -3.0 -4.0 -5.0 -6.0 01020304050 v , change in v out (mv) d out 25 c 0 c 75 c i out , output current (ma) d v out , change in output voltage (mv) 10 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 0 0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10 75 c 0 c 25 c figure 5. quiescent current versus temperature (v in = 15 v, i out = 0 ma) i 1 , quiescent current (ma) t a , temperature ( c) 0 1.25 1.20 1.15 1.10 1.05 1.00 0.95 0.90 80 60 40 20 0 -40 -20 figure 6. change in v out versus temperature (normalized to v out @ v in = 15 v) figure 7. change in v out versus temperature (normalized to t a = 25 c, v in = 15 v, i out = 0 ma) 85 70 50 30 10 -10 -30 80 60 40 20 0 -40 -20 85 70 50 30 10 -10 -30 v in = 5.0 v v in = 15 v i out = 2 ma 80 60 40 20 0 -40 -20 85 70 50 30 10 -10 -30 i o = 0 ma = 2.0 ma = 5.0 ma = 8.0 ma
mc1403, b http://onsemi.com 5 3?1/2?digit voltmeter ? common anode displays, flashing overrange an example of a 3?1/2?digit voltmeter using the mc14433 is shown in the circuit diagram of figure 8. the reference voltage for the system uses an mc1403 2.5 v reference ic. the full scale potentiometer can calibrate for a full scale of 199.9 mv or 1.999 v. when switching from 2.0 v to 200 mv operation, r i is also changed, as shown on the diagram. when using r c equal to 300 k , the clock frequency for the system is about 66 khz. the resulting conversion time is approximately 250 ms. when the input is overrange, the display flashes on and off. the flashing rate is one?half the conversion rate. this is done by dividing the eoc pulse rate by 2 with 1/2 mc14013b flip?flop and blanking the display using the blanking input of the mc14543b. the display uses an led display with common anode digit lines driven with an mc14543b decoder and an mc1413 led driver. the mc1413 contains 7 darlington transistor drivers and resistors to drive the segments of the display. the digit drive is provided by four mps?a12 darlington transistors operating in an emitter?follower configuration. the mc14543b, mc14013b and led displays are referenced to v ee via pin 13 of the mc14433. this places the full power supply voltage across the display. the current for the display may be adjusted by the value of the segment resistors shown as 150 in figure 8. figure 8. 3?1/2?digit voltmeter common anode led display * r i = 470 k for 2.0 v range r i = 27 k for 200 mv range ** mylar capacitor 0.1 f 3 2 1 +5.0 v 0.1 f r c 300 k v x r i * 20 k -5.0 v 0.1 f +5.0 v 0.1 f 0.1 f plus sign 50 f minus sign segment resistors 150 (7) mps-a12 +5.0 v mc14013b 51 k mc14433 0.1 f cq q r s d 14 ds1 6 710 -5.0 v -5.0 v c 8 6 16 1 19 5.0 v d s r q q +5.0 v mps-a12 (4) 7 mc1403 200 110 0.1 f ** ds2 ds3 ds4 1 2 8 13 12 11 9 4 3 5 10 1 2 3 4 5 9 5 3 2 4 16 15 14 13 11 12 7 15 14 13 6 11 10 14 16 17 18 15 8 7 6 5 4 13 12 9 22 23 21 24 1 12 20 2 10 11 3 ba c d e g f mc14543b mc1413 +5.0 v +5.0 v -5.0 v -5.0 v -5.0 v -5.0 v -5.0 v
mc1403, b http://onsemi.com 6 ordering information device package operating temperature range shipping 2 mc1403d soic?8 t a = 0 to +70 c 98 units/rail mc1403dr2 2500 tape/reel mc1403p1 pdip?8 1000 units/rail mc1403p1g pdip?8 (pb?free) 1000 units/tubes MC1403BD soic?8 t a = ? 40 to +85 c 98 units/rail MC1403BDr2 2500 tape/reel mc1403bp1 pdip?8?8 1000 units/rail 2for information on tape and reel specifications, including part orientation and tape sizes, please refer to our tape and reel packaging specifications brochure, brd8011/d.
mc1403, b http://onsemi.com 7 package dimensions pdip?8 p1 suffix case 626?05 issue l notes: 1. dimension l to center of lead when formed parallel. 2. package contour optional (round or square corners). 3. dimensioning and tolerancing per ansi y14.5m, 1982. 14 5 8 f note 2 ?a? ?b? ?t? seating plane h j g d k n c l m m a m 0.13 (0.005) b m t dim min max min max inches millimeters a 9.40 10.16 0.370 0.400 b 6.10 6.60 0.240 0.260 c 3.94 4.45 0.155 0.175 d 0.38 0.51 0.015 0.020 f 1.02 1.78 0.040 0.070 g 2.54 bsc 0.100 bsc h 0.76 1.27 0.030 0.050 j 0.20 0.30 0.008 0.012 k 2.92 3.43 0.115 0.135 l 7.62 bsc 0.300 bsc m --- 10 --- 10 n 0.76 1.01 0.030 0.040
mc1403, b http://onsemi.com 8 package dimensions soic?8 d suffix case 751?07 issue aa seating plane 1 4 5 8 n j x 45 k notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: millimeter. 3. dimension a and b do not include mold protrusion. 4. maximum mold protrusion 0.15 (0.006) per side. 5. dimension d does not include dambar protrusion. allowable dambar protrusion shall be 0.127 (0.005) total in excess of the d dimension at maximum material condition. 6. 751?01 thru 751?06 are obsolete. new standard is 751?07. a b s d h c 0.10 (0.004) dim a min max min max inches 4.80 5.00 0.189 0.197 millimeters b 3.80 4.00 0.150 0.157 c 1.35 1.75 0.053 0.069 d 0.33 0.51 0.013 0.020 g 1.27 bsc 0.050 bsc h 0.10 0.25 0.004 0.010 j 0.19 0.25 0.007 0.010 k 0.40 1.27 0.016 0.050 m 0 8 0 8 n 0.25 0.50 0.010 0.020 s 5.80 6.20 0.228 0.244 ?x? ?y? g m y m 0.25 (0.010) ?z? y m 0.25 (0.010) z s x s m soic?8 1.52 0.060 7.0 0.275 0.6 0.024 1.270 0.050 4.0 0.155 mm inches scale 6:1 *for additional information on our pb?free strategy and soldering details, please download the on semiconductor soldering and mounting techniques reference manual, solderrm/d. soldering footprint* on semiconductor and are registered trademarks of semiconductor components industries, llc (scillc). scillc reserves the right to mak e changes without further notice to any products herein. scillc makes no warranty, representation or guarantee regarding the suitability of its products for an y particular purpose, nor does scillc assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including wi thout limitation special, consequential or incidental damages. atypicalo parameters which may be provided in scillc data sheets and/or specifications can and do vary in different application s and actual performance may vary over time. all operating parameters, including atypicalso must be validated for each customer application by customer's technical experts. scillc does not convey any license under its patent rights nor the rights of others. scillc products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the scillc product could create a sit uation where personal injury or death may occur. should buyer purchase or use scillc products for any such unintended or unauthorized application, buyer shall indemnify and hold scillc and its officers, employees, subsidiaries, af filiates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, direct ly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that scillc was negligent regarding the design or manufacture of the part. scillc is an equal opportunity/affirmative action employer. this literature is subject to all applicable copyright laws and is not for resale in any manner. publication ordering information n. american technical support : 800?282?9855 toll free usa/canada japan : on semiconductor, japan customer focus center 2?9?1 kamimeguro, meguro?ku, tokyo, japan 153?0051 phone : 81?3?5773?3850 mc1403/d literature fulfillment : literature distribution center for on semiconductor p.o. box 5163, denver, colorado 80217 usa phone : 303?675?2175 or 800?344?3860 toll free usa/canada fax : 303?675?2176 or 800?344?3867 toll free usa/canada email : orderlit@onsemi.com on semiconductor website : http://onsemi.com order literature : http://www.onsemi.com/litorder for additional information, please contact your local sales representative.
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