? semiconductor components industries, llc, 2011 april, 2011 ? rev. 0 1 publication order number: ref3012/d ref3012, ref3020, ref3025, ref3030, ref3033, ref3040 high precision, low drift, cmos voltage reference the ref30xx family of voltage references provides accurate voltage regulation with a maximum temperature drift of 50 ppm/ c. the ref30xx can source or sink up to 10 ma of load current. it is supplied in a space ? saving sot ? 23 package, and for most applications can forgo the use of an output bypass capacitor. features ? reference voltages: 1.25 v, 2.048 v, 2.5 v, 3.0 v, 3.3 v, 4.096 v ? high accuracy: 0.2% ? low quiescent current: 30 a max ? high output current: 10 ma sourced or sunk ? maximum 50 ppm/ c temperature drift over the specified range of ? 40 c to +85 c ? sot ? 23 3 ? lead package ? this device is pb ? free, halogen free/bfr free, and rohs compliant typical applications ? battery powered systems ? a/d and d/a converters ? precision regulator systems ? power supplies ? portable medical equipment gnd ref30xx c 0.1 f v in v in v out v out figure 1. application circuit http://onsemi.com pin connections gnd v in 1 (top view) see detailed ordering and shipping information in the package dimensions section on page 2 of this data sheet. ordering information sot23 ? 3 tb suffix case 527ag s3 = specific device code y = production year = (last digit) m = production month = (1 ? 9, o, n, d) marking diagram s3ym 1 2 3 v out 2 3 pin functions pin name v in function supply voltage input v out output voltage gnd ground 1 2 3 pin no.
ref3012, ref3020, ref3025, ref3030, ref3033, ref3040 http://onsemi.com 2 table 1. ordering information device output voltage marking package shipping ? ref3012tb ? gt3 1.25 v s3ym sot ? 23 3000 / tape & reel ref3020tb ? gt3 2.048 v ref3025tb ? gt3 2.5 v ref3030tb ? gt3 3.0 v ref3033tb ? gt3 3.3 v ref3040tb ? gt3 (note 1) 4.096 v 1. contact factory for availability of these and other custom voltages. ?for information on tape and reel specifications, including part orientation and tape sizes, please refer to our tape and reel packaging specifications brochure, brd8011/d. table 2. absolute maximum ratings (note 2) rating value unit v in 6.5 v storage temperature range ? 55 to +125 c junction temperature range +150 c stresses exceeding maximum ratings may damage the device. maximum ratings are stress ratings only. functional operation above t he recommended operating conditions is not implied. extended exposure to stresses above the recommended operating conditions may af fect device reliability. 2. maximum terminal current is bounded by the maximum current handling of the switches, maximum power dissipation of the package . table 3. recommended operating conditions rating value unit temperature range ? 40 to +85 c
ref3012, ref3020, ref3025, ref3030, ref3033, ref3040 http://onsemi.com 3 table 4. electrical characteristics (v in = 3.0 v, i out = 0 ma, c out = 0.001 f, ? 40 c to +85 c unless specified otherwise.) parameter test conditions symbol min typ max unit output voltage ref3012 ref3020 ref3025 ref3030 (v in = 5.0 v) ref3033 (v in = 5.0 v) ref3040 (v in = 5.0 v) v out 1.2475 2.044 2.495 2.994 3.294 4.088 1.250 2.048 2.500 3.000 3.300 4.096 1.2525 2.052 2.505 3.006 3.306 4.104 v output voltage accuracy ? 0.2 +0.2 % output voltage noise (note 3) f = 0.1 hz to 10 hz 50 vp ? p line regulation 2.7 v v in 5.5 v 30 100 v/v output voltage temp drift ? 40 c t a +85 c dv out /dt 20 50 ppm/ c long ? term stability (note 3) 0 ? 1000 h 50 ppm load regulation v in = 3 v 0 ma < i load < 10 ma ? 10 ma < i load < 0 ma dv out / di load 100 150 250 350 v/ma thermal hysteresis (note 3) t a = 125 c dt 100 ppm dropout voltage vout = 2.5 v v in ? v out 1 2.5 mv short ? circuit current (note 3) t a = 25 c out pin shorted to gnd out pin shorted to in i sc 50 20 60 40 ma turn on settling time to 0.1% at v in = 5 v with c l = 0 2 ms power supply voltage i l = 0 v s 2.7 5.5 v supply current i l = 0 i q 30 a temperature range specified range operating range storage range ? 40 ? 40 ? 55 +85 +85 +125 c 3. guaranteed by design.
ref3012, ref3020, ref3025, ref3030, ref3033, ref3040 http://onsemi.com 4 typical characteristics unit 3 figure 2. output voltage vs. temperature figure 3. output voltage vs. supply voltage (no load) temperature ( c) 85 60 35 10 ? 15 ? 40 1.2492 1.2494 1.2496 1.2498 1.2502 1.2504 1.2506 1.2508 figure 4. line regulation over temperature figure 5. load regulation over temperature output voltage (v) unit 1 unit 2 1.2500 input voltage (v) 5.5 4.5 4.0 3.5 3.0 2.5 1.2498 1.2499 1.2500 1.2501 1.2502 output voltage (v) unit 3 unit 1 unit 2 5.0 input voltage (v) 5.5 5.0 4.5 4.0 3.5 3.0 2.5 ? 25 0 25 50 output voltage change ( v) +85 c +25 c ? 40 c output current (ma) 10 5 0 ? 5 ? 10 ? 1.5 ? 1.0 ? 0.5 0 0.5 1.0 1.5 2.0 output voltage change (mv) +85 c +25 c ? 40 c sinking sourcing figure 6. power ? supply rejection ratio vs. frequency frequency (hz) 100 k 10 k 1 k 100 10 1 ? 90 ? 80 ? 70 ? 50 ? 40 ? 30 ? 10 0 psrr (db) ? 60 ? 20 no load 1 nf load 10 nf load 100 nf load 1 m figure 7. output impedance vs. frequency frequency (hz) 100 k 10 k 1 k 100 10 1 0 20 40 60 80 100 120 160 output impedance ( ) 140 no load 1 nf load 10 nf load 100 nf load
ref3012, ref3020, ref3025, ref3030, ref3033, ref3040 http://onsemi.com 5 typical characteristics figure 8. step response, c l = 0, 3 v startup figure 9. 0.1 hz to 10 hz noise figure 10. line transient response figure 11. line transient response with cap. load figure 12. load transient (i l = 50 a) figure 13. load transient (i l = 10 ma)
ref3012, ref3020, ref3025, ref3030, ref3033, ref3040 http://onsemi.com 6 application information application information a supply bypass capacitor of 0.1 f is recommended. in most applications, the ref30xx does not require an output bypass capacitor. for the effects of a capacitive load on device performance, see figures 8 and 9 in the typical characteristics section. power supply the ref30xx family of references works at supply voltages between 2.7 v and 5.5 v. the maximum dropout voltage in this range is 2.5 mv. while the power supply voltage rises to the specified level during power ? up, the ref30xx will temporarily draw a higher than typical current. it is recommended to use a power supply with a fast rising edge. line regulation line regulation is defined as the change in output voltage due to the change in the input voltage. for ref30xx, this change is less than 100 v/v across the specified supply voltage range. thermal hysteresis thermal hysteresis is defined as the change in the output voltage after the device is cycled through the operating temperature range. this change is reported as a fraction of the nominal output voltage, in ppm. the initial output v pre is measured at 25 c. after the device is cooled to ? 40 c, heated to +80 c, then cooled back to 25 c, the final output voltage v post is measured. the thermal hysteresis is equal to t h hyst v pre v post v nom 10 6 (ppm) (eq. 1) where v nom is the nominal output voltage. temperature drift temperature drift is defined as the change in the output voltage caused by a change in operating temperature. (see figure 2 in the typical characteristics section.) the ref30xx family is designed to exhibit a temperature drift of less than 50 ppm/ c across its entire operating temperature range of ? 40 c to +85 c. noise performance the noise generated by the ref30xx family is typically less than 50 vp ? p between frequencies of 0.1 hz to 10 hz, as shown in the t ypical characteristic curves. output noise can be additionally reduced using a low ? pass filter , although care should be taken, as capacitive loads affect the psrr and the output impedance. (see the typical characteristics section.) load regulation load regulation is defined as the change in output voltage due to a specified change in load current. the ref30xx family can sink or source up to 10 ma of current, with an output change of less than 250 v/ma when sourcing, or 350 v/ma when sinking current.
ref3012, ref3020, ref3025, ref3030, ref3033, ref3040 http://onsemi.com 7 figure 14. adjustable voltage reference sda scl w v cc b a +5 v vout gnd cat5171 vin ref3040 +5 v +5 v sda scl p 0.1 f figure 15. data acquisition system using ref30xx voltage reference, with noise filter gnd 0.1 f +5 v vout vin ref30xx 10 0.01 f +5 v vin serial bus vref +5 v v cc adc p
ref3012, ref3020, ref3025, ref3030, ref3033, ref3040 http://onsemi.com 8 package dimensions sot ? 23, 3 lead case 527ag ? 01 issue o e1 e a1 e e1 b d 3 12 c a top view side view end view l1 l notes: (1) all dimensions are in millimeters. angles in degrees. (2) complies with jedec to-236. symbol min nom max a a1 b c d e e1 e e1 l1 0 8 l 0.013 0.37 0.085 2.80 2.10 1.20 1.90 bsc 0.40 ref 1.12 0.10 0.50 0.18 3.04 2.64 1.40 0.54 ref 0.95 bsc 0.89 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. ?typical? 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 ?typicals? 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 of ficers, 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. ref3012/d publication ordering information n. american technical support : 800 ? 282 ? 9855 toll free usa/canada europe, middle east and africa technical support: phone: 421 33 790 2910 japan customer focus center phone: 81 ? 3 ? 5773 ? 3850 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 : www.onsemi.com order literature : http://www.onsemi.com/orderlit for additional information, please contact your local sales representative
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