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precision series sub-band gap voltage reference adr130 rev. 0 information furnished by analog devices is believed to be accurate and reliable. however, no responsibility is assumed by analog devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. specifications subject to change without notice. no license is granted by implication or otherwise under any patent or patent rights of analog devices. trademarks and registered trademarks are the property of their respective owners. one technology way, p.o. box 9106, norwood, ma 02062-9106, u.s.a. tel: 781.329.4700 www.analog.com fax: 781.461.3113 ?2006 analog devices, inc. all rights reserved. features initial accuracy a grade: + 0.70% (maximum) b grade: + 0.35% (maximum) maximum temperature coefficient a grade: 50 ppm/c b grade: 25 ppm/c c load = 50 nf to 10 f output current: +4 ma/?2 ma low operating current: 80 a (typical) output noise: 6 v p-p @ 1.0 v output input range: 2.0 v to 18 v temperature range: ?40c to +125c tiny, pb-free tsot package applications battery-powered instrumentation portable medical equipment communication infrastructure equipment pin configuration nc = no connect adr130 top view (not to scale) nc 1 nc 6 gnd 2 set 5 v in 3 v out 4 06322-001 figure 1. 6-lead tsot (uj-6) general description the adr130 is the industrys first family of tiny, micropower, low voltage, high precision voltage references. featuring 0.35% initial accuracy and 25 ppm/c of temperature drift in the tiny tsot-23 package, the adr130 voltage reference only requires 80 a for typical operation. the adr130 design includes a patented temperature drift curvature correction technique that minimizes the nonlinearities in the output voltage vs. tempera- ture characteristics. available in the industrial temperature range of ?40c to +125c, the adr130 is housed in a tiny tsot package. for 0.5 v output, tie set (pin 5) to v out (pin 4). for 1.0 v output, tie set (pin 5) to gnd (pin 2).
adr130 rev. 0 | page 2 of 16 table of contents features .............................................................................................. 1 applications ....................................................................................... 1 pin configuration ............................................................................. 1 general description ......................................................................... 1 revision history ............................................................................... 2 specifications ..................................................................................... 3 electrical characteristics ............................................................. 3 absolute maximum ratings ............................................................ 5 thermal resistance ...................................................................... 5 esd caution .................................................................................. 5 typical performance characteristics ............................................. 6 ter mi nolo g y .................................................................................... 11 theory of operation ...................................................................... 12 power dissipation considerations ........................................... 12 input capacitor ........................................................................... 12 output capacitor ........................................................................ 12 application notes ........................................................................... 13 basic voltage reference connection ....................................... 13 stacking reference ics for arbitrary outputs ....................... 13 negative precision reference without precision resistors .. 14 precision current source .......................................................... 14 outline dimensions ....................................................................... 15 ordering guide .......................................................................... 15 revision history 10/06revision 0: initial version
adr130 rev. 0 | page 3 of 16 specifications electrical characteristics t a = 25c, v in = 2.0 v to 18 v, unless otherwise noted. set (pin 5) tied to v out (pin 4). table 1. parameter symbol conditions min typ max unit output voltage v o a grade 0.49650 0.5 0.50350 v b grade 0.49825 0.5 0.50175 v initial accuracy error v oerr a grade ?3.50 +3.50 mv b grade ?1.75 +1.75 mv temperature coefficient tcv o ?40c < t a < +125c a grade 15 50 ppm/c b grade 5 25 ppm/c load regulation ?40c < t a < +125c; 3 v v in 18 v; 0 ma < i out < 4 ma ?0.13 +0.13 mv/ma ?40c < t a < +125c; 3 v v in 18 v; ?2 ma < i out < 0 ma ?1.0 +1.0 mv/ma line regulation 2.0 v to 18 v, i out = 0 ma ?40 +10 +40 ppm/v quiescent current i q ?40c < t a < +125c, no load 75 150 a short-circuit current to ground v in = 2.0 v 15 ma v in = 18.0 v 50 ma voltage noise 0.1 hz to 10 hz 3 v p-p turn-on settling time to 0.1%, c l = 0.1 f 80 s long-term stability 1000 hours @ 25c 100 ppm/1000 hours output voltage hysteresis 150 ppm
adr130 rev. 0 | page 4 of 16 t a = 25c, v in = 2.0 v to 18 v, unless otherwise noted. set (pin 5) tied to gnd (pin 2). table 2. parameter symbol conditions min typ max unit output voltage v o a grade 0.9930 1.0 1.0070 v b grade 0.9965 1.0 1.0035 v initial accuracy error v oerr a grade ?7.0 +7.0 mv b grade ?3.5 +3.5 mv temperature coefficient tcv o ?40c < t a < +125c a grade 15 50 ppm/c b grade 5 25 ppm/c load regulation ?40c < t a < +125c; 3 v v in 18 v; 0 ma < i out < 4 ma ?0.25 +0.25 mv/ma ?40c < t a < +125c; 3 v v in 18 v; ?2 ma < i out < 0 ma ?2.0 +2.0 mv/ma line regulation 2.0 v to 18 v, i out = 0 ma ?40 +10 +40 ppm/v quiescent current i q ?40c < t a < +125c, no load 85 150 a short-circuit current to ground v in = 2.0 v 15 ma v in = 18.0 v 50 ma voltage noise 0.1 hz to 10 hz 6 v p-p turn-on settling time to 0.1%, c l = 0.1 f 80 s long-term stability 1000 hours @ 25c 100 ppm/1000 hours output voltage hysteresis 150 ppm
adr130 rev. 0 | page 5 of 16 absolute maximum ratings table 3. parameter ratings v in to gnd 20 v internal power dissipation 40 mw storage temperature range ?65c to +150c specified temperature range ?40c to +120c lead temperature, soldering vapor phase (60 sec) 215c infrared (15 sec) 220c stresses above those listed under absolute maximum ratings may cause permanent damage to the device. this is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. thermal resistance ja is specified for the worst-case conditions, that is, a device soldered in a circuit board for surface-mount packages. table 4. thermal resistance package type ja jc unit tsot (uj-6) 186 67 c/w esd caution
adr130 rev. 0 | page 6 of 16 typical performance characteristics 0.4985 0.4980 0.4990 0.4995 0.5000 0.5005 0.5010 0.5015 0.5020 ?40?25?105 203550658095110125 06322-002 v out (v) temperature (c) figure 2. v out vs. temperature, v out = 0.5 v 0 1 2 3 4 5 6 7 8 9 10 06322-003 number of parts temperature coefficient (ppm/c) ?50 ?45 ?40 ?35 ?30 ?25 ?20 ?15 ?10 ?5 0 5 10 15 20 25 30 35 40 45 50 figure 3. temperature coefficient, v out = 0.5 v 2.0 1.8 1.6 1.4 1.2 1.0 ?2?1012345 06322-004 v in_min (v) load current (ma) ?40c +125c +25c figure 4. minimum input voltage vs. load current, v out = 0.5 v ?40 ?25 ?10 5 20 35 50 65 80 95 110 125 06322-005 v out (v) temperature (c) 0.996 0.997 0.998 0.999 1.000 1.001 1.002 1.003 1.004 figure 5. v out vs. temperature, v out = 1 v 0 1 2 3 4 5 6 7 8 9 10 06322-006 number of parts temperature coefficient (ppm/c) ?50 ?45 ?40 ?35 ?30 ?25 ?20 ?15 ?10 ?5 0 5 10 15 20 25 30 35 40 45 50 figure 6. temperature coefficient, v out = 1 v 2.0 1.8 1.6 1.4 1.2 1.0 ?2?1012345 06322-007 v in_min (v) load current (ma) +25c ?40c +125c figure 7. minimum input voltage vs. load current, v out = 1 v
adr130 rev. 0 | page 7 of 16 06322-008 supply current (a) input voltage (v) 0 20 40 60 80 100 120 140 160 23456789101112131415161718 +125c +25c ?40c figure 8. supply current vs. input voltage, v out = 0.5 v 6 0 1 2 3 4 5 06322-009 supply current (ma) ?2?1012345 load current (ma) t a = ?40c, +25c, +125c figure 9. supply current vs. load current, v out = 0.5 v 0 2 4 6 8 10 ?40 ?25 ?10 5 20 35 50 65 80 95 110 125 06322-010 line regulation (ppm/v) temperature (c) v in = 2v to 18v figure 10. line regulati on vs. temperature, v out = 0.5 v 06322-011 supply current (a) input voltage (v) 0 20 40 60 80 100 120 140 160 23456789101112131415161718 +125c +25c ?40c figure 11. supply current vs. input voltage, v out = 1 v 6 0 1 2 3 4 5 06322-012 supply current (ma) ?2 012345 load current (ma) ?1 t a = ?40c, +25c, +125c figure 12. supply current vs. load current, v out = 1 v 0 2 4 6 8 10 ?40 ?25 ?10 5 20 35 50 65 80 95 110 125 06322-013 line regulation (ppm/v) temperature (c) v in = 2v to 18v figure 13. line regulati on vs. temperature, v out = 1 v
adr130 rev. 0 | page 8 of 16 0 0.01 0.02 0.03 0.04 0.05 ?40 ?25 ?10 5 20 35 50 65 80 95 110 125 06322-014 load regulation?source (mv/ma) temperature (c) figure 14. load regulation (source) vs. temperature, v out = 0.5 v ?40 ?25 ?10 5 20 35 50 65 80 95 110 125 06322-015 load regulation?sink (mv/ma) temperature (c) 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 figure 15. load regulation (sink) vs. temperature, v out = 0.5 v 06322-016 c in = c out = 0.1f 2v/di v time (1s/div) ch1 peak-to-peak 3.16v figure 16. 0.1 hz to 10 hz noise, v out = 0.5 v 0 0.02 0.04 0.06 0.08 0.01 0.03 0.05 0.07 ?40 ?25 ?10 5 20 35 50 65 80 95 110 125 06322-017 load regulation?source (mv/ma) temperature (c) figure 17. load regulation (source) vs. temperature, v out = 1 v ?40 ?25 ?10 5 20 35 50 65 80 95 110 125 06322-018 load regulation?sink (mv/ma) temperature (c) 0 0.2 0.4 0.6 0.8 2.0 1.0 1.2 1.4 1.6 1.8 figure 18. load regulation (sink) vs. temperature, v out = 1 v 06322-019 c in = c out = 0.1f 2v/di v time (1s/div) ch1 peak-to-peak 5.72v figure 19. 0.1 hz to 10 hz noise, v out = 1 v
adr130 rev. 0 | page 9 of 16 06322-020 c in = c out = 0.1f 50v/di v time (1s/div) ch1 peak-to-peak 172v figure 20. 10 hz to 10 khz noise, v out = 0.5 v 06322-021 v in = 1v/div time (40s/div) v out 200mv/div c in = c out = 0.1f figure 21. turn-on response, v out = 0.5 v 06322-022 v in = 1v/div c in = c out = 0.1f time (10ms/div) v out = 200mv/div figure 22. turn-off response, v out = 0.5 v 06322-023 c in = c out = 0.1f time (1s/div) 50v/di v peak-to-peak 291v figure 23. 10 hz to 10 khz noise, v out = 1 v 06322-024 v in = 1v/div v out = 500mv/div time (40s/div) c in = c out = 0.1f figure 24. turn-on response, v out = 1 v 06322-025 v in = 1v/div v out = 500mv/div time (400s/div) c in = c out = 0.1f figure 25. turn-off response, v out = 1 v
adr130 rev. 0 | page 10 of 16 v in = 1v/div v out = 20mv/div 06322-026 time (100s/div) c in = c out = 0.1f figure 26. line transient response, v out = 0.5 v v load = 0.5v/div c in = c out = 0.1f r load = 125 ? time (40s/div) v out = 20mv/div 06322-027 i load = 0ma i load = 4ma figure 27. load transient response (source), v out = 0.5 v v load = 200mv/div c in = c out = 0.1f r load = 125 ? v out = 100mv/div 06322-028 i load = 2ma i load = 0ma time (40s/div) figure 28. load transient response (sink), v out = 0.5 v v in = 1v/div c in = c out = 0.1f v out = 20mv/div 06322-029 time (100s/div) figure 29. line transient response, v out = 1 v v load = 1v/div c in = c out = 0.1f r load = 250 ? v out = 20mv/div 06322-030 i load = 0ma i load = 4ma time (40s/div) figure 30. load transient response (source), v out = 1 v v load = 500mv/div c in = c out = 0.1f r load = 250 ? v out = 100mv/div 06322-031 i load = 2ma i load = 0ma time (40s/div) figure 31. load transient response (sink), v out = 1 v
adr130 rev. 0 | page 11 of 16 terminology temperature coefficient temperature coefficient is the change of output voltage with respect to the operating temperature change normalized by the output voltage at 25c. this parameter is expressed in ppm/c and is determined by [] ( ) ( ) () () 6 10 c25 cppm/ ? ? = 12 o 1 o 2 o o tt v tvtv tcv where: v o (25c) = v o at 25c. v o (t 1 ) = v o at temperature 1. v o ( t 2 ) = v o at temperature 2. line regulation line regulation is the change in the output due to a specified change in input voltage. this parameter accounts for the effects of self-heating. line regulation is expressed in either %/v, ppm/v, or v/v in . load regulation load regulation is the change in output voltage due to a specified change in load current. this parameter accounts for the effects of self-heating. load regulation is expressed in either mv/ma, ppm/ma, or dc output resistance (). long-term stability long-term stability is the typical shift of output voltage at 25c on a sample of parts subjected to a test of 1000 hours at 25c. ( ) ( ) 1 o 0 oo tvtvv ? = [] ( ) () () 6 10 ppm ? = 0 o 1 o 0 o o tv tvtv v where: v o (t 0 ) = v o at 25c at time 0. v o (t 1 ) = v o at 25c after 1000 hours operating at 25c. thermal hysteresis thermal hysteresis is the change of output voltage after the device is cycled through temperatures from +25c to ?40c to +125c, then back to +25c. this is a typical value from a sample of parts put through such a cycle. where: v o (25c) = v o at 25c. v otc = v o at 25c after temperature cycle from +25c to ?40c to +125c, then back to +25c.
adr130 rev. 0 | page 12 of 16 theory of operation the adr130 sub-band gap reference is the high performance solution for low supply voltage and low power applications. the uniqueness of this product lies in its architecture. power dissipation considerations the adr130 is capable of delivering load currents to 4 ma with an input range from 3.0 v to 18 v. when this device is used in applications with large input voltages, care must be taken to avoid exceeding the specified maximum power dissipation or junction temperature, because this results in premature device failure. use the following formula to calculate the maximum junction temperature or dissipation: ja a j d tt p ? = where: t j is the junction temperature. t a is the ambient temperature. p d is the device power dissipation. ja is the device package thermal resistance. input capacitor input capacitors are not required on the adr130. there is no limit for the value of the capacitor used on the input, but a 1 f to 10 f capacitor on the input improves transient response in applications where there is a sudden supply change. an addi- tional 0.1 f capacitor in parallel also helps reduce noise from the supply. output capacitor the adr130 requires a small 0.1 f output capacitor for stability. additional 0.1 f to 10 f capacitance in parallel can improve load transient response. this acts as a source of stored energy for a sudden increase in load current. the only parame- ter affected by the additional capacitance is turn-on time.
adr130 rev. 0 | page 13 of 16 application notes basic voltage reference connection the circuits in figure 32 and figure 33 illustrate the basic configuration for the adr130 voltage reference. 1 2 3 6 5 4 nc gnd v in v out set nc input output adr130 0.1f 0.1f 06322-032 2 ct v ot 0 v 1 2 3 6 5 4 nc gnd v in v out set nc input output adr130 0.1f 0.1f 06322-033 figure 33. basic configuration, v out = 1 v stacking reference ics for arbitrary outputs some applications may require two reference voltage sources that are a combined sum of the standard outputs. figure 34 and figure 35 show how these stacked output references can be implemented. 1 2 3 6 5 4 nc gnd v in v out set nc 0.1f 06322-034 1 2 3 6 5 4 nc gnd v in v out set nc input v out1 v out2 u1 adr130 u2 adr130 0.1f 0.1f 0.1f t t ad10 v ot1 10 v v ot2 20 v 1 2 3 6 5 4 nc gnd v in v out set nc 0.1f 06322-035 1 2 3 6 5 4 nc gnd v in v out set nc input v out1 v out2 u1 adr130 u2 adr130 0.1f 0.1f 0.1f figure 35. stacking references with adr130, v out1 = 0.5 v. v out2 = 1.5 v two reference ics are used and fed from an unregulated input, v in . the outputs of the individual ics that are connected in series provide two output voltages, v out1 and v out2 . v out1 is the terminal voltage of u1, and v out2 is the sum of this voltage and the terminal voltage of u2. u1 and u2 are chosen for the two voltages that supply the required outputs (see table 5 ). for example, if u1 is set to have an output of 1 v or 0.5 v, the user can stack on top of u2 to get an output of 2 v or 1.5 v. table 5. required outputs u1/u2 comments v out1 v out2 adr130/adr130 see figure 34 1 v 2 v adr130/adr130 see figure 35 0.5 v 1.5 v
adr130 rev. 0 | page 14 of 16 negative precision reference without precision resistors a negative reference is easily generated by adding an op amp, a1, and is configured as shown in figure 36. v out is at virtual ground and, therefore, the negative reference can be taken directly from the output of the op amp. the op amp must be dual-supply, low offset, and rail-to-rail if the negative supply voltage is close to the reference output. 1 2 3 6 5 4 nc gnd v in v out set nc 06322-036 u2 adr130 + v dd ?v ref ?v dd 0.1f v+ v? a1 op291 1k ? figure 36. negative reference, ?v ref = ?0.5 v precision current source in low power applications, the need can arise for a precision current source that can operate on low supply voltages. the adr130 can be configured as a precision current source (see figure 37). the circuit configuration shown is a floating current source with a grounded load. the reference output voltage is bootstrapped across r set , which sets the output current into the load. with this configuration, circuit precision is maintained for load currents ranging from the reference supply current, typically 85 a, to approximately 4 ma. 1 2 3 6 5 4 nc gnd v in v out set nc adr130 06322-037 r set v in p1 r l figure 37. adr130 as a precision current source
adr130 rev. 0 | page 15 of 16 outline dimensions 13 45 2 6 2.90 bsc 1.60 bsc 2.80 bsc 1.90 bsc 0.95 bsc 0.20 0.08 8 4 0 0.50 0.30 0.10 max * 0.90 0.87 0.84 seating plane * 1.00 max 0.60 0.45 0.30 pin 1 indicato r * compliant to jedec standards mo-193-aa with the exception of package height and thickness. figure 38. 6-lead thin small outline transistor package [tsot] (uj-6) dimensions shown in millimeters ordering guide model temperature coefficient (ppm/c) temperature range package description package option branding ordering quantity adr130aujz-reel7 1 50 ?40c to +125c 6-lead tsot uj-6 r0w 3,000 ADR130AUJZ-R2 1 50 ?40c to +125c 6-lead tsot uj-6 r0w 250 adr130bujz-reel7 1 25 ?40c to +125c 6-lead tsot uj-6 r0x 3,000 adr130bujz-r2 1 25 ?40c to +125c 6-lead tsot uj-6 r0x 250 1 z = pb-free part.
adr130 rev. 0 | page 16 of 16 notes ?2006 analog devices, inc. all rights reserved. trademarks and registered trademarks are the property of their respective owners. d06322-0-10/06(0)

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