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ultracompact, precision 10.0 v/5.0 v/2.5 v/3. 0 v voltage references adr01/adr02/adr03/adr06 rev. l 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 ?2002C2008 analog devices, inc. all rights reserved. features ultracompact sc70 and tsot packages low temperature coefficient 8-lead soic: 3 ppm/c 5-lead sc70: 9 ppm/c 5-lead tsot: 9 ppm/c initial accuracy 0.1% no external capacitor required low noise 10 v p-p (0.1 hz to 10.0 hz) wide operating range adr01: 12.0 v to 36.0 v adr02: 7.0 v to 36.0 v adr03: 4.5 v to 36.0 v adr06: 5.0 v to 36.0 v high output current 10 ma wide temperature range: C40c to +125c adr01/adr02/adr03 pin compatible to industry- standard ref01/ref02/ref03 applications precision data acquisition systems high resolution converters industrial process control systems precision instruments pcmcia cards pin configurations 5 4 1 3 2 v out trim v in temp gnd top view (not to scale) a d r 0 1 / a d r 0 2 / a d r 0 3 / a d r 0 6 02747-001 figure 1. 5-lead, sc70/tsot surface-mount packages top view (not to scale) 8 6 1 tp 3 2 a d r 0 1 / a d r 0 2 / a d r 0 3 / a d r 0 6 v out 7 5 4 trim tp nic v in temp gnd nic = no internal connect tp = test pin (do not connect) 02747-002 figure 2. 8-lead, soic surface-mount package general description the adr01, adr02, adr03, and adr06 are precision 10.0 v, 5.0 v, 2.5 v, and 3.0 v band gap voltage references featuring high accuracy, high stability, and low power consumption. the parts are housed in tiny, 5-lead sc70 and tsot packages, as well as in 8-lead soic versions. the soic versions of the adr01, adr02, and adr03 are drop-in replacements 1 to the industry- standard ref01, ref02, and ref03. the small footprint and wide operating range make the adr0x references ideally suited for general-purpose and space-constrained applications. with an external buffer and a simple resistor network, the temp terminal can be used for temperature sensing and approximation. a trim terminal is provided on the devices for fine adjustment of the output voltage. the adr01, adr02, adr03, and adr06 are compact, low drift voltage references that provide an extremely stable output voltage from a wide supply voltag e range. they are available in 5-lead sc70 and tsot packages, and 8-lead soic packages with a, b, and c grade selections. all parts are specified over the extended industrial (C40c to +125c) temperature range. table 1. selection guide part number output voltage adr01 10.0 v adr02 5.0 v adr03 2.5 v adr06 3.0 v 1 adro1, adr02, and adr03 are component-level compatible with ref 01, ref02, and ref03, respective ly. no guarantees for system-le vel compatibility are implied. soic versions of adr01/adr02/adr03 are pin-to-pin compatible with 8-lead soic versions of ref01/ref02/ref03, respectively, with the additional temperature monitoring function.
adr01/adr02/adr03/adr06 rev. l | page 2 of 24 table of contents features .............................................................................................. 1 ? applications ....................................................................................... 1 ? pin configurations ........................................................................... 1 ? general description ......................................................................... 1 ? revision history ............................................................................... 2 ? specifications ..................................................................................... 3 ? adr01 electrical characteristics ............................................... 3 ? adr02 electrical characteristics ............................................... 4 ? adr03 electrical characteristics ............................................... 5 ? adr06 electrical characteristics ............................................... 6 ? absolute maximum ratings ............................................................ 7 ? thermal resistance ...................................................................... 7 ? esd caution...................................................................................7 ? terminology .......................................................................................8 ? typical performance characteristics ..............................................9 ? applications ..................................................................................... 14 ? applying the adr01/adr02/adr03/adr06 ...................... 14 ? negative reference ..................................................................... 15 ? low cost current source .......................................................... 15 ? precision current source with adjustable output ................ 15 ? programmable 4 ma to 20 ma current transmitter ............ 16 ? precision boosted output regulator ....................................... 16 ? outline dimensions ....................................................................... 17 ? ordering guides ......................................................................... 18 ? revision history 12/08rev. k to rev. l changes to maximum input voltage ............................... universal removed die version......................................................... universal changes to table 2 ............................................................................ 3 changes to table 3 ............................................................................ 4 changes to table 4 ............................................................................ 5 changes to table 5 ............................................................................ 6 deleted table 6 and figure 3 ........................................................... 7 changes to terminology section.................................................... 8 added input and output capacitors section ............................. 15 2/08rev. j to rev. k changes to terminology section.................................................... 9 changes to ordering guide .......................................................... 19 3/07rev. i to rev. j renamed parameters and definitions section ............................. 9 changes to temperature monitoring section ............................ 15 changes to ordering guide .......................................................... 19 7/05rev. h to rev. i changes to table 5 ............................................................................ 7 updated outline dimensions ....................................................... 19 changes to ordering guide .......................................................... 19 12/04rev. g to rev. h changes to adr06 ordering guide ............................................ 20 9/04rev. f to rev. g changes to table 2 ............................................................................ 4 changes to table 3 ............................................................................ 5 changes to table 4 ............................................................................ 6 changes to table 5 ............................................................................ 7 changes to ordering guide .......................................................... 19 7/04rev. e to rev. f changes to adr02 electrical characteristics, table 2 ................ 4 changes to ordering guide .......................................................... 19 2/04rev. d to rev. e added c grade .................................................................... universal changes to outline dimensions .................................................. 19 updated ordering guide .............................................................. 20 8/03rev. c to rev d added adr06 ..................................................................... universal change to figure 27 ....................................................................... 13 6/03rev. b to rev c changes to features section ............................................................ 1 changes to general description section ....................................... 1 changes to figure 2 ........................................................................... 1 changes to specifications section ................................................... 2 addition of dice electrical characteristics and layout ............... 6 changes to absolute maximum ratings section .......................... 7 updated soic (r-8) outline dimensions .................................. 19 changes to ordering guide .......................................................... 20 2/03rev. a to rev. b added adr03 ..................................................................... universal added tsot-5 (uj) package ............................................ universal updated outline dimensions ....................................................... 18 12/02rev. 0 to rev. a changes to features section ............................................................ 1 changes to general description ..................................................... 1 table i deleted .................................................................................... 1 changes to adr01 specifications ................................................... 2 changes to adr02 specifications ................................................... 3 changes to absolute maximum ratings section .......................... 4 changes to ordering guide ............................................................. 4 updated outline dimensions ....................................................... 12
adr01/adr02/adr03/adr06 rev. l | page 3 of 24 specifications adr01 electrical characteristics v in = 12.0 v to 36.0 v, t a = 25c, unless otherwise noted. table 2. parameter symbol conditions min typ max unit output voltage v o a and c grades 9.990 10.000 10.010 v initial accuracy v oerr a and c grades 10 mv 0.1 % output voltage v o b grade 9.995 10.000 10.005 v initial accuracy v oerr b grade 5 mv 0.05 % temperature coefficient tcv o a grade, 8-lead soic, ? 40c < t a < +125c 3 10 ppm/c a grade, 5-lead tsot, C40c < t a < +125c 25 ppm/c a grade, 5-lead sc70, C40c < t a < +125c 25 ppm/c b grade, 8-lead soic, C40c < t a < +125c 1 3 ppm/c b grade, 5-lead tsot, C40c < t a < +125c 9 ppm/c b grade, 5-lead sc70, C40c < t a < +125c 9 ppm/c c grade, 8-lead soic, C40c < t a < +125c 10 40 ppm/c dropout voltage v do 2 v line regulation ?v o /?v in v in = 12.0 v to 36.0 v, C40c < t a < +125c 7 30 ppm/v load regulation ?v o /?i load i load = 0 ma to 10 ma, C40c < t a < +125c, v in = 15.0 v 40 70 ppm/ma quiescent current i in no load, C40c < t a < +125c 0.65 1 ma voltage noise e n p-p 0.1 hz to 10.0 hz 20 v p-p voltage noise density e n 1 khz 510 nv/hz turn-on settling time t r 4 s long-term stability 1 ?v o 1000 hours 50 ppm output voltage hysteresis ?v o_hys 70 ppm ripple rejection ratio rrr f in = 10 khz ?75 db short circuit to gnd i sc 30 ma temperature sensor voltage output at temp pin v temp 550 mv temperature sensitivity tcv temp 1.96 mv/c 1 the long-term stability specification is noncumulative. the drift in subsequent 1000 hour periods is sign ificantly lower than in the first 1000 hour period.
adr01/adr02/adr03/adr06 rev. l | page 4 of 24 adr02 electrical characteristics v in = 7.0 v to 36.0 v, t a = 25c, unless otherwise noted. table 3. parameter symbol conditions min typ max unit output voltage v o a and c grades 4.995 5.000 5.005 v initial accuracy v oerr a and c grades 5 mv 0.1 % output voltage v o b grade 4.997 5.000 5.003 v initial accuracy v oerr b grade 3 mv 0.06 % temperature coefficient t cvo a grade, 8-lead soic, C40c < t a < +125c 3 10 ppm/c a grade, 5-lead tsot, C40c < t a < +125c 25 ppm/c a grade, 5-lead sc70, C40c < t a < +125c 25 ppm/c a grade, 5-lead sc70, C55c < t a < +125c 30 ppm/c b grade, 8-lead soic, C40c < t a < +125c 1 3 ppm/c b grade, 5-lead tsot, C40c < t a < +125c 9 ppm/c b grade, 5-lead sc70, C40c < t a < +125c 9 ppm/c c grade, 8-lead soic, C40c < t a < +125c 10 40 ppm/c dropout voltage v do 2 v line regulation ?v o /?v in v in = 7.0 v to 36.0 v, C40c < t a < +125c 7 30 ppm/v v in = 7.0 v to 36.0 v, C55c < t a < +125c 7 40 ppm/v load regulation ?v o /?i load i load = 0 ma to 10 ma, C40c < t a < +125c, v in = 10.0 v 40 70 ppm/ma i load = 0 ma to 10 ma, C55c < t a < +125c, v in = 10.0 v 45 80 ppm/ma quiescent current i in no load, C40c < t a < +125c 0.65 1 ma voltage noise e n p-p 0.1 hz to 10.0 hz 10 v p-p voltage noise density e n 1 khz 230 nv/hz turn-on settling time t r 4 s long-term stability 1 ?v o 1000 hours 50 ppm output voltage hysteresis ?v o_hys 70 ppm C55c < t a < +125c 80 ppm ripple rejection ratio rrr f in = 10 khz C75 db short circuit to gnd i sc 30 ma temperature sensor voltage output at temp pin v temp 550 mv temperature sensitivity tcv temp 1.96 mv/c 1 the long-term stability specification is noncumulative. the drift in subsequent 1000 hour periods is sign ificantly lower than in the first 1000 hour period.
adr01/adr02/adr03/adr06 rev. l | page 5 of 24 adr03 electrical characteristics v in = 4.5 v to 36.0 v, t a = 25c, unless otherwise noted. table 4. parameter symbol conditions min typ max unit output voltage v o a and c grades 2.495 2.500 2.505 v initial accuracy v oerr a and c grades 5 mv 0.2 % output voltage v o b grades 2.4975 2.5000 2.5025 v initial accuracy v oerr b grades 2.5 mv 0.1 % temperature coefficient tcv o a grade, 8-lead soic, C40c < t a < +125c 3 10 ppm/c a grade, 5-lead tsot, C40c < t a < +125c 25 ppm/c a grade, 5-lead sc70, C40c < t a < +125c 25 ppm/c a grade, 5-lead sc70, C55c < t a < +125c 30 ppm/c b grade, 8-lead soic, C40c < t a < +125c 1 3 ppm/c b grade, 5-lead tsot, C40c < t a < +125c 9 ppm/c b grade, 5-lead sc70, C40c < t a < +125c 9 ppm/c c grade, 8-lead soic, C40c < t a < +125c 10 40 ppm/c dropout voltage v do 2 v line regulation ?v o /?v in v in = 4.5 v to 36.0 v, C40c < t a < +125c 7 30 ppm/v v in = 4.5 v to 36.0 v, C55c < t a < +125c 7 40 ppm/v load regulation ? v o /?i load i load = 0 ma to 10 ma, C40c < t a < +125c, v in = 7.0 v 25 70 ppm/ma i load = 0 ma to 10 ma, C55c < t a < +125c, v in = 7.0 v 45 80 ppm/ma quiescent current i in no load, C40c < t a < +125c 0.65 1 ma voltage noise e n p-p 0.1 hz to 10.0 hz 6 v p-p voltage noise density e n 1 khz 230 nv/hz turn-on settling time t r 4 s long-term stability 1 ?v o 1000 hours 50 ppm output voltage hysteresis ?v o_hys 70 ppm C55c < t a < +125c 80 ppm ripple rejection ratio rrr f in = 10 khz C75 db short circuit to gnd i sc 30 ma temperature sensor voltage output at temp pin v temp 550 mv temperature sensitivity tcv temp 1.96 mv/c 1 the long-term stability specification is noncumulative. the drift in subsequent 1000 hour periods is sign ificantly lower than in the first 1000 hour period.
adr01/adr02/adr03/adr06 rev. l | page 6 of 24 adr06 electrical characteristics v in = 5.0 v to 36.0 v, t a = 25c, unless otherwise noted. table 5. parameter symbol conditions min typ max unit output voltage v o a and c grades 2.994 3.000 3.006 v initial accuracy v oerr a and c grades 6 mv 0.2 % output voltage v o b grade 2.997 3.000 3.003 v initial accuracy v oerr b grade 3 mv 0.1 % temperature coefficient tcv o a grade, 8-lead soic, C40c < t a < +125c 3 10 ppm/c a grade, 5-lead tsot, C40c < t a < +125c 25 ppm/c a grade, 5-lead sc70, C40c < t a < +125c 25 ppm/c b grade, 8-lead soic, C40c < t a < +125c 1 3 ppm/c b grade, 5-lead tsot, C40c < t a < +125c 9 ppm/c b grade, 5-lead sc70, C40c < t a < +125c 9 ppm/c c grade, 8-lead soic, C40c < t a < +125c 10 40 ppm/c dropout voltage v do 2 v line regulation ?v o /?v in v in = 5.0 v to 36.0 v, C40c < t a < +125c 7 30 ppm/v load regulation ?v o /?i load i load = 0 ma to 10 ma, C40c < t a < +125c, v in = 7.0 v 40 70 ppm/ma quiescent current i in no load, C40c < t a < +125c 0.65 1 ma voltage noise e n p-p 0.1 hz to 10.0 hz 10 v p-p voltage noise density e n 1 khz 510 nv/hz turn-on settling time t r 4 s long-term stability 1 ?v o 1000 hours 50 ppm output voltage hysteresis ?v o_hys 70 ppm ripple rejection ratio rrr f in = 10 khz C75 db short circuit to gnd i sc 30 ma temperature sensor voltage output at temp pin v temp 550 mv temperature sensitivity tcv temp 1.96 mv/c 1 the long-term stability specification is noncumulative. the drift in subsequent 1000 hour periods is sign ificantly lower than in the first 1000 hour period.
adr01/adr02/adr03/adr06 rev. l | page 7 of 24 absolute maximum ratings ratings are at 25c, unless otherwise noted. table 6. parameter rating supply voltage 36.0 v output short-circuit duration to gnd indefinite storage temperature range C65c to +150c operating temperature range C40c to +125c junction temperature range C65c to +150c lead temperature range (soldering, 60 sec) 300c 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 7. thermal resistance package type ja jc unit 5-lead sc70 (ks-5) 376 189 c/w 5-lead tsot (uj-5) 230 146 c/w 8-lead soic (r-8) 130 43 c/w esd caution
adr01/adr02/adr03/adr06 rev. l | page 8 of 24 terminology dropout voltage (v do ) dropout voltage, sometimes referred to as supply voltage head- room or supply output voltage differential, is defined as the minimum voltage differential between the input and output necessary for the device to operate, such as v do = ( v in C v out )min| i l = constant because the dropout voltage depends upon the current passing through the device, it is always specified for a given load current. temperature coefficient (tcv o ) the temperature coefficient relates the change in output voltage to the change in ambient temperature of the device, as normalized by the output voltage at 25c. this parameter is expressed in ppm/c and can be determined by the following equation: () [] cppm/10 )25( )()( 6 12 1 2 o o ? ? = ttcv tvtv tcv out out out o where: v out (25c) is the output voltage at 25c. v out (t 1 ) is the output voltage at temperature 1. v out (t 2 ) is the output voltage at temperature 2. output voltage hysteresis (v out_hys ) output voltage hysteresis represents the change in output voltage after the device is exposed to a specified temperature cycle. this may be expressed as either a shift in voltage or a difference in parts per million from the nominal output as follows: v out_hys = v out (25c) C v out_tc [v] ]ppm[10 )25( )25( 6 _ _ ? = cv vcv v out tc out out hysout o o where: v out (25c) is the output voltage at 25c. v out_tc is the output voltage after temperature cycling. thermal hysteresis occurs as a result of forces exhibited upon the internal die by its packaging. the effect is more pronounced in parts with smaller packages. long-term stability (v out_ltd ) long-term stability refers to the shift in output voltage at 25c after 1000 hours of operation in a 25c environment. this may also be expressed as either a shift in voltage or a difference in parts per million from the nominal output as follows: v out_ltd = |v out (t 1 ) C v out (t 0 )| [v] ]ppm[10 )( )()( 6 0 0 1 _ ? = tv tvtv v out out out ltdout where, v out (t 0 ) is the v out at 25c at time 0. v out (t 1 ) is the v out at 25c after 1000 hours of operation at 25c. line regulation line regulation refers to the change in output voltage in response to a given change in input voltage, and is expressed in either percent per volt, parts per million per volt, or microvolt per volt change in input voltage. this parameter accounts for the effects of self-heating. load regulation load regulation refers to the change in output voltage in response to a given change in load current, and is expressed in either microvolts per milliampere, parts per million per milliampere, or ohms of dc output resistance. this parameter accounts for the effects of self-heating.
adr01/adr02/adr03/adr06 rev. l | page 9 of 24 typical performance characteristics temperature (c) v out (v) 10.010 10.005 10.000 9.995 9.990 9.985 ?40 ?25 ?10 5 20 35 50 65 80 95 110 125 02747-004 figure 3. adr01 typical outp ut voltage vs. temperature temperature (c) v out (v) 5.008 5.004 5.000 4.996 4.992 ?40 ?25 ?10 5 20 35 50 65 80 95 110 125 02747-005 figure 4. adr02 typical outp ut voltage vs. temperature temperature (c) ?40 v out (v) 2.502 2.501 ?25 ?10 5 20 35 50 65 80 95 110 125 2.500 2.499 2.498 02747-006 figure 5. adr03 typical outp ut voltage vs. temperature temperature (c) v out (v) 3.002 3.001 3.000 2.999 2.998 ?40 ?25 ?10 5 20 35 50 65 80 95 110 125 02747-007 figure 6. adr06 typical outp ut voltage vs. temperature 12 28 16 20 24 32 36 supply current (ma) 0.8 0.7 0.6 0.5 0.4 input voltage (v) +125c +25c ?40c 02747-008 figure 7. adr01 supply current vs. input voltage 12 28 16 20 24 32 36 8 supply current (ma) +125c 0.8 0.7 0.6 0.5 0.4 input voltage (v) +25c ?40c 02747-009 figure 8. adr02 supply current vs. input voltage
adr01/adr02/adr03/adr06 rev. l | page 10 of 24 input voltage (v) 5 supply current (ma) 10 15 20 25 30 35 36 0.40 0.45 0.50 0.55 0.60 0.65 0.70 0.75 0.80 0.85 +125c ?40c +25c 02747-010 figure 9. adr03 supply current vs. input voltage input voltage (v) 5 supply current (ma) 10 15 20 25 30 35 36 0.40 0.45 0.50 0.55 0.60 0.65 0.70 0.75 0.80 +125c ?40c +25c 02747-011 figure 10. adr06 supply cu rrent vs. input voltage 40 25 20 0 85 125 30 10 i l = 0ma to 10ma load regulation (ppm/ma) temperature (c) v in = 36v v in = 14v 50 0 ?40 ?40 ?30 ?20 ?10 02747-012 figure 11. adr01 load regulation vs. temperature 40 20 0 50 85 125 30 10 i l = 0ma to 5ma load regulation (ppm/ma) temperature (c) v in = 36v v in = 8v 25 0 ?40 ?20 ?10 02747-013 figure 12. adr02 load regulation vs. temperature load regulation (ppm/ma) 0 10 20 30 40 50 60 temperature (c) ?40 ?25 ?10 5 20 35 50 65 80 95 110 125 v in = 36v v in = 7v i l = 0ma to 10ma 02747-014 figure 13. adr03 load regulation vs. temperature load regul a tion (ppm/ma) ?30 ?20 ?10 0 10 20 40 30 temperature (c) ?40 ?25 ?10 52035 50 65 80 95 110 125 v in = 36v i l = 0ma to 10ma v in = 7v 02747-015 figure 14. adr06 load regulation vs. temperature
adr01/adr02/adr03/adr06 rev. l | page 11 of 24 0 ?4 2 ?2 ?6 ?8 temperature (c) line regul a tion (ppm/v) ?10 ?40 ?25 ?10 5 20 35 50 65 80 95 110 125 v in = 14v to 36v 02747-016 figure 15. adr01 line regulation vs. temperature 4 ?4 8 0 ?8 temperature (c) line regul a tion (ppm/v) v in = 8v to 36v ?40 ?25 ?10 5 20 35 50 65 80 95 110 125 02747-017 figure 16. adr02 line regulation vs. temperature line regul a tion (ppm/mv) ?4 ?2 0 2 4 temperature (c) ?40 ?25 ?10 52035 50 65 80 95 110 125 v in = 5v to 36v 02747-018 figure 17. adr03 line regulation vs. temperature line regul a tion (ppm/v) ?4 ?2 2 4 6 0 8 10 temperature (c) ?40 ?25 ?10 5 20 35 50 65 80 95 110 125 v in = 6v to 36v 0 2747-019 figure 18. adr06 line regulation vs. temperature 3 1 5 2 0 4 46 02 load current (ma) 81 differenti 0 a l voltage ( v) ?40c +125c +25c 02747-020 figure 19. adr01 minimum input-output voltage differential vs. load current 46 8 0 2 0 4 2 +25c load current (ma) 8 10 ?40c +125c differential voltage (v) 0 2747-021 figure 20. adr02 dropout voltage vs. load current
adr01/adr02/adr03/adr06 rev. l | page 12 of 24 3 1 5 2 0 4 46 02 load current (ma) 81 0 differenti a lvoltage (v) +125c +25c ?40c 6 0 2747-022 figure 21. adr03 dropout voltage vs. load current 2.0 1.0 4.0 3.5 3.0 1.5 0 0.5 2.5 0246 load current (ma) 8 10 differenti a lvol t age (v) +125c +25c ?40c 4.5 02747-023 figure 22. adr06 dropout voltage vs. load current 0 0.50 246 t a = 25c load current (ma) 8 10 quiescent current (ma) 0.55 0.60 0.65 0.70 0 2747-024 figure 23. adr01 quiescent current vs. load current 02747-025 time (1s/div) 1v/di v figure 24. adr02 typical noise voltage 0.1 hz to 10.0 hz 02747-026 time (1ms/div) 50v/di v figure 25. adr02 typical noise voltage 10 hz to 10 khz 02747-027 time (2ms/div) v out 5v/div no load capacitor no input capacitor 10v 8v figure 26. adr02 line transient response
adr01/adr02/adr03/adr06 rev. l | page 13 of 24 02747-028 time (1ms/div) load = 5ma v out 100mv/div v in 5v/div no load capacitor load off load on figure 27. adr02 load transient response 02747-029 time (1ms/div) load = 5ma v out 100mv/div v in 5v/div load off load on c load = 100nf figure 28. adr02 load transient response 02747-030 time (4s/div) c in = 0.01f no load capacitor v in 10v/div v out 5v/div figure 29. adr02 turn-off response 02747-031 time (4s/div) c in = 0.01f no load capacitor v in 10v/div v out 5v/div figure 30. adr02 turn-on response 02747-032 time (4s/div) c l = 0.01f no input capacitor v in 10v/div v out 5v/div figure 31. adr02 turn-off with no input capacitor 02747-033 time (4s/div) c l = 0.01f no input capacitor v in 10v/div v out 5v/div figure 32. adr02 turn-off with no input capacitor
adr01/adr02/adr03/adr06 rev. l | page 14 of 24 applications information overview the adr01/adr02/adr03/adr06 are high precision, low drift 10.0 v, 5.0 v, 2.5 v, and 3.0 v voltage references available in an ultracompact footprint. the 8-lead soic versions of the devices are drop-in replacements of the ref01/ref02/ref03 sockets with improved cost and performance. these devices are standard band gap references (see figure 34 ). the band gap cell contains two npn transistors (q18 and q19) that differ in emitter area by 2. the difference in their v be produces a proportional-to-absolute temperature current (ptat) in r14, and, when combined with the v be of q19, produces a band gap voltage, v bg , that is almost constant in temperature. with an internal op amp and the feedback network of r5 and r6, v o is set precisely at 10.0 v, 5.0 v, 2.5 v, and 3.0 v for the adr01, adr02, adr06, and adr03, respectively. precision laser trimming of the resistors and other proprietary circuit techniques are used to further enhance the initial accuracy, temperature curvature, and drift performance of the adr01/ adr02/adr03/adr06. the ptat voltage is made available at the temp pin of the adr01/adr02/adr03/adr06. it has a stable 1.96 mv/c temperature coefficient, such that users can estimate the temperature change of the device by knowing the voltage change at the temp pin. applying the adr01/adr02/adr03/adr06 input and output capacitors although the adr01/adr02/adr03/adr06 are designed to function stably without any external components, connecting a 0.1 f ceramic capacitor to the output is highly recommended to improve stability and filter out low level voltage noise. an additional 1 f to 10 f electrolytic, tantalum, or ceramic capacitor can be added in parallel to improve transient per- formance in response to sudden changes in load current; however, the designer should keep in mind that doing so increases the turn-on time of the device. a 1 f to 10 f electrolytic, tantalum or ceramic capacitor can also be connected to the input to improve transient response in applications where the supply voltage may fluctuate. an addi- tional 0.1 f ceramic capacitor sh ould be connected in parallel to reduce supply noise. mount both input and output capacitors as close to the device pins as possible. output adjustment the adr01/adr02/adr03/adr06 trim terminal can be used to adjust the output voltage over a nominal voltage. this feature allows a system designer to trim system errors by setting the reference to a voltage other than 10.0 v/5.0 v/2.5 v/3.0 v. for finer adjustment, add a series resistor of 470 k. with the con- figuration shown in figure 35 , the adr01 can be adjusted from 9.70 v to 10.05 v, the adr02 can be adjusted from 4.95 v to 5.02 v, the adr06 can be adjusted from 2.8 v to 3.3 v, and the adr03 can be adjusted from 2.3 v to 2.8 v. adjustment of the output does not significantly affect the temperature performance of the device, provided the temperature coefficients of the resis- tors are relatively low. u1 adr01/ adr02/ adr03/ adr06 v o c2 0.1f c1 0.1f v in v in v out temp trim gnd 02747-035 figure 33. basic configuration r1 r2 r3 r4 v in q23 q1 q2 q7 q8 q9 q3 q10 d1 d2 q4 v o d3 c1 r13 q12 q13 r5 i1 r12 q14 q15 2 1 v bg r20 trim q18 temp r27 q19 q16 q17 q20 r6 r42 r41 r24 r32 r11 r17 r14 gnd 02747-034 figure 34. simplified schematic diagram u1 adr01/ adr02/ adr03/ adr06 v in v out temp trim gnd v in v o pot 10k ? r2 1k? r1 470k? 02747-036 figure 35. optional trim adjustment temperature monitoring as described at the end of the overview section, the adr01/ adr02/adr03/adr06 provide a temp output (pin 1 in figure 1 and pin 3 in figure 2 ) that varies linearly with temperature. this output can be used to monitor the temperature change in the system. the voltage at v temp is approximately 550 mv at 25c, and the temperature coefficient is approximately 1.96 mv/c (see figure 36 ). a voltage change of 39.2 mv at the temp pin corresponds to a 20c change in temperature.
adr01/adr02/adr03/adr06 rev. l | page 15 of 24 125 25 50 75 100 0.40 0.80 0.75 0.70 0.65 0.60 0.55 0.50 0.45 ?25 0 ?50 v in = 15v sample size = 5 v temp (v) temperature (c) v temp / t 1.96mv/c 02747-037 figure 36. voltage at temp pin vs. temperature the temp function is provided as a convenience rather than a precise feature. because the voltage at the temp node is acquired from the band gap core, current pulling from this pin has a significant effect on v out . care must be taken to buffer the temp output with a suitable low bias current op amp, such as the ad8601, ad820 , or op1177 , all of which result in less than a 100 v change in v out (see figure 37 ). without buffering, even tens of microamps drawn from the temp pin can cause v out to fall out of specification. u2 15v u1 adr01/ adr02/ adr03/ adr06 v in v out temp trim gnd v o v? v+ op1177 v temp 1.9mv/c v in 02747-038 figure 37. temperature monitoring negative reference without using any matching resistors, a negative reference can be configured, as shown in figure 38 . for the adr01, the voltage difference between v out and gnd is 10.0 v. because v out is at virtual ground, u2 closes the loop by forcing the gnd pin to be the negative reference node. u2 should be a precision op amp with a low offset voltage characteristic. low cost current source unlike most references, the adr01/adr02/adr03/adr06 employ an npn darlington in which the quiescent current remains constant with respect to the load current, as shown in figure 23 . as a result, a current source can be configured as shown in figure 39 where i set = (v out ? v l )/r set . i l is simply the sum of i set and i q . although simple, i q varies typically from 0.55 ma to 0.65 ma, limiting this circuit to general-purpose applications. u2 +15v ?15v v? v+ op1177 ?v ref u1 +5 v to +15v 02747-039 adr01/ adr02/ adr03/ adr06 v in v out temp trim gnd figure 38. negative reference adr01/ adr02/ adr03/ adr06 v out gnd v in i in i set = (v out ? v l )/r set r set i q 0.6ma i l = i set + i q v l r l 02747-040 figure 39. low cost current source precision current source with adjustable output alternatively, a precision current source can be implemented with the circuit shown in figure 40 . by adding a mechanical or digital potentiometer, this circuit becomes an adjustable current source. if a digital potentiometer is used, the load current is simply the voltage across terminal b to terminal w of the digital potentiometer divided by r set . set ref l r dv i = (1) where d is the decimal equivalent of the digital potentiometer input code. u2 +12v ?12v w b a u1 adr01/ adr02/ adr03/ adr06 v in v out temp trim gnd v? v+ op1177 ?5v to v l ad5201 0v to (5v + v l ) +12 v r set 1k? r l i l v l 1k ? 100k ? 02747-041 figure 40. programmable 0 ma to 5 ma current source
adr01/adr02/adr03/adr06 rev. l | page 16 of 24 to optimize the resolution of this circuit, dual-supply op amps should be used because the ground potential of adr02 can swing from ?5.0 v at zero scale to v l at full scale of the potentiometer setting. programmable 4 ma to 20 ma current transmitter because of their precision, adequate current handling, and small footprint, the devices are suitable as the reference sources for many high performance converter circuits. one of these applications is the multichannel 16-bit, 4 ma to 20 ma current transmitter in the industrial control market (see figure 41 ). this circuit employs a howland current pump at the output to yield better efficiency, a lower component count, and a higher voltage compliance than the conventional design with op amps and mosfets. in this circuit, if the resistors are matched such that r1 = r1 , r2 = r2 , r3 = r3 , the load current is n ref l dv r3 r1r3)(r2 i 2 + = (2) where d is similarly the decimal equivalent of the dac input code and n is the number of bits of the dac. according to equation 2, r3 can be used to set the sensitivity. r3 can be made as small as necessary to achieve the current needed within u4 output current driving capability. alter- natively, other resistors can be kept high to conserve power. in this circuit, the ad8512 is capable of delivering 20 ma of current, and the voltage compliance approaches 15.0 v. u1 15 v v in v out gnd temp trim u1 = adr01/adr02/adr03/adr06, ref01 u2 = ad5543/ad5544/ad5554 u3, u4 = ad8512 u2 5v 10v +15v ?15v v dd v ref gnd rf io io ad5544 digital input code 20%?100% ful l scale u3 v x 0 v to ?10v r1 150k ? r2 15k ? u4 c1 10pf vp r3 50 ? ad8512 r3' 50? v l r1' 150k ? load 500? 4ma to 20ma vn v o r2' 15k ? 02747-042 figure 41. programmable 4 ma to 20 ma transmitter the howland current pump yields a potentially infinite output impedance, that is highly desirable, but resistance matching is critical in this application. the output impedance can be deter- mined using equation 3. as shown by this equation, if the resistors are perfectly matched, z o is infinite. alternatively, if they are not matched, z o is either positive or negative. if the latter is true, oscillation can occur. for this reason, connect capacitor c1 in the range of 1 pf to 10 pf between vp and the output terminal of u4 to filter any oscillation. ? ? ? ? ? ? ? == 1 r1r2 r2r1 r1 i v z t t o (3) in this circuit, an adr01 provides the stable 10.000 v reference for the ad5544 quad 16-bit dac. the resolution of the adjust- able current is 0.3 a/step; the total worst-case inl error is merely 4 lsbs. such error is equivalent to 1.2 a or a 0.006% system error, which is well below most systems requirements. the result is shown in figure 42 with measurement taken at 25c and 70c; total system error of 4 lsbs at both 25c and 70c. 5 ?1 0 65536 8192 16384 24576 32768 40960 49152 57344 4 3 2 1 0 code (decimal) inl (lsb) r l = 500 ? i l = 0ma to 20ma 25c 70c 02747-043 figure 42. result of programmable 4 ma to 20 ma current transmitter precision boosted output regulator a precision voltage output with boosted current capability can be realized with the circuit shown in figure 43 . in this circuit, u2 forces v o to be equal to v ref by regulating the turn-on of n1, thereby making the load current furnished by v in . in this configuration, a 50 ma load is achievable at v in of 15.0 v. moderate heat is generated on the mosfet, and higher current can be achieved with a replacement of a larger device. in addition, for a heavy capacitive load with a fast edging input signal, a buffer should be added at the output to enhance the transient response. u2 15v n1 200 ? u1 adr01/ adr02/ adr03/ adr06 v in v out temp trim gnd v? v+ op1177 2n7002 v in v o r l 1f c l 02747-044 c 1 1000pf r 2 100 ? r 1 100 ? figure 43. precision boosted output regulator
adr01/adr02/adr03/adr06 rev. l | page 17 of 24 outline dimensions compliant to jedec standards mo-203-aa 0.30 0.15 0 . 1 0 m a x 1.00 0.90 0.70 0.46 0.36 0.26 seating plane 0.22 0.08 1.10 0.80 4 5 123 pin 1 0.65 bsc 2.20 2.00 1.80 2.40 2.10 1.80 1.35 1.25 1.15 0.10 coplanarity 0.40 0.10 figure 44. 5-lead thin shrink small outline transistor package [sc70] (ks-5) dimensions shown in millimeters 100708-a * compliant to jedec standards mo-193-ab with the exception of package height and thickness. 1.60 bsc 2.80 bsc 1.90 bsc 0.95 bsc 0.20 0.08 0.60 0.45 0.30 8 4 0 0.50 0.30 0.10 max * 1.00 max * 0.90 max 0.70 min 2.90 bsc 54 12 3 seating plane figure 45. 5-lead thin small outline transistor package [tsot] (uj-5) dimensions shown in millimeters controlling dimensions are in millimeters; inch dimensions (in parentheses) are rounded-off millimeter equivalents for reference only and are not appropriate for use in design. compliant to jedec standards ms-012-a a 012407-a 0.25 (0.0098) 0.17 (0.0067) 1.27 (0.0500) 0.40 (0.0157) 0.50 (0.0196) 0.25 (0.0099) 45 8 0 1.75 (0.0688) 1.35 (0.0532) seating plane 0.25 (0.0098) 0.10 (0.0040) 4 1 85 5.00 (0.1968) 4.80 (0.1890) 4.00 (0.1574) 3.80 (0.1497) 1.27 (0.0500) bsc 6.20 (0.2441) 5.80 (0.2284) 0.51 (0.0201) 0.31 (0.0122) coplanarity 0.10 figure 46. 8-lead standard small outline package [soic_n] narrow body (r-8) dimensions shown in millimeters and (inches)
adr01/adr02/adr03/adr06 rev. l | page 18 of 24 ordering guides adr01 ordering guide output voltage v o (v) temperature coefficient (ppm/c) temperature range package description package option initial accuracy ordering quantity model (mv) (%) branding adr01ar 10 10 0.1 10 C40c to +125c 8-lead soic_n r-8 98 adr01ar-reel7 10 10 0.1 10 C40c to +125c 8-lead soic_n r-8 1,000 adr01arz 1 10 10 0.1 10 C40c to +125c 8-lead soic_n r-8 98 adr01arz-reel7 1 10 10 0.1 10 C40c to +125c 8-lead soic_n r-8 1,000 adr01br 10 5 0.05 3 C40c to +125c 8-lead soic_n r-8 98 adr01br-reel7 10 5 0.05 3 C40c to +125c 8-lead soic_n r-8 1,000 adr01brz 1 10 5 0.05 3 C40c to +125c 8-lead soic_n r-8 98 adr01brz-reel7 1 10 5 0.05 3 C40c to +125c 8-lead soic_n r-8 1,000 adr01auj-reel7 10 10 0.1 25 C40c to +125c 5-lead tsot uj-5 3,000 r8a adr01auj-r2 10 10 0.1 25 C40c to +125c 5-lead tsot uj-5 250 r8a adr01aujz-reel7 1 10 10 0.1 25 C40c to +125c 5-lead tsot uj-5 3,000 r1e adr01buj-reel7 10 5 0.05 9 C40c to +125c 5-lead tsot uj-5 3,000 r8b adr01buj-r2 10 5 0.05 9 C40c to +125c 5-lead tsot uj-5 250 r8b adr01bujz-reel7 1 10 5 0.05 9 C40c to +125c 5-lead tsot uj-5 3,000 r1f adr01aks-reel7 10 10 0.1 25 C40c to +125c 5-lead sc70 ks-5 3,000 r8a adr01aks-r2 10 10 0.1 25 C40c to +125c 5-lead sc70 ks-5 250 r8a adr01aksz-reel7 1 10 10 0.1 25 C40c to +125c 5-lead sc70 ks-5 3,000 r1e adr01bks-reel7 10 5 0.05 9 C40c to +125c 5-lead sc70 ks-5 3,000 r8b adr01bks-r2 10 5 0.05 9 C40c to +125c 5-lead sc70 ks-5 250 r8b adr01bksz-reel7 1 10 5 0.05 9 C40c to +125c 5-lead sc70 ks-5 3,000 r1f adr01crz 1 10 10 0.1 40 C40c to +125c 8-lead soic_n r-8 98 adr01crz-reel 1 10 10 0.1 40 C40c to +125c 8-lead soic_n r-8 2,500 1 z = rohs compliant part.
adr01/adr02/adr03/adr06 rev. l | page 19 of 24 adr02 ordering guide model output voltage v o (v) initial accuracy temperature coefficient (ppm/c) temperature range package description package option ordering quantity (mv) (%) branding adr02ar 5 5 0.1 10 C40c to +125c 8-lead soic_n r-8 98 adr02ar-reel 5 5 0.1 10 C40c to +125c 8-lead soic_n r-8 2,500 adr02ar-reel7 5 5 0.1 10 C40c to +125c 8-lead soic_n r-8 1,000 adr02arz 1 5 5 0.1 10 C40c to +125c 8-lead soic_n r-8 98 adr02arz-reel 1 5 5 0.1 10 C40c to +125c 8-lead soic_n r-8 2,500 adr02arz-reel7 1 5 5 0.1 10 C40c to +125c 8-lead soic_n r-8 1,000 adr02warz-reel 5 5 0.1 10 C40c to +125c 8-lead soic_n r-8 2,500 adr02warz-reel7 5 5 0.1 10 C40c to +125c 8-lead soic_n r-8 1,000 adr02br 5 3 0.06 3 C40c to +125c 8-lead soic_n r-8 98 adr02br-reel7 5 3 0.06 3 C40c to +125c 8-lead soic_n r-8 1,000 adr02brz 1 5 3 0.06 3 C40c to +125c 8-lead soic_n r-8 98 adr02brz-reel7 1 5 3 0.06 3 C40c to +125c 8-lead soic_n r-8 1,000 adr02auj-reel7 5 5 0.1 25 C40c to +125c 5-lead tsot uj-5 3,000 r9a adr02auj-r2 5 5 0.1 25 C40c to +125c 5-lead tsot uj-5 250 r9a adr02aujz-reel7 1 5 5 0.1 25 C40c to +125c 5-lead tsot uj-5 3,000 r1g adr02buj-reel7 5 3 0.06 9 C40c to +125c 5-lead tsot uj-5 3,000 r9b adr02buj-r2 5 3 0.06 9 C40c to +125c 5-lead tsot uj-5 250 r9b adr02bujz-r2 1 5 3 0.06 9 C40c to +125c 5-lead tsot uj-5 250 r9b adr02bujz-reel7 1 5 3 0.06 9 C40c to +125c 5-lead tsot uj-5 3,000 r1h adr02aks-reel7 5 5 0.1 25 C40c to +125c 5-lead sc70 ks-5 3,000 r9a adr02aks-r2 5 5 0.1 25 C40c to +125c 5-lead sc70 ks-5 250 r9a adr02aksz-reel7 1 5 5 0.1 25 C40c to +125c 5-lead sc70 ks-5 3,000 r1g adr02bks-reel7 5 3 0.06 9 C40c to +125c 5-lead sc70 ks-5 3,000 r9b adr02bks-r2 5 3 0.06 9 C40c to +125c 5-lead sc70 ks-5 250 r9b adr02bksz-reel7 1 5 3 0.06 9 C40c to +125c 5-lead sc70 ks-5 3,000 r1h adr02crz 1 5 5 0.1 40 C40c to +125c 8-lead soic_n r-8 98 adr02crz-reel 1 5 5 0.1 40 C40c to +125c 8-lead soic_n r-8 2,500 1 z = rohs compliant part.
adr01/adr02/adr03/adr06 rev. l | page 20 of 24 adr03 ordering guide model output voltage v o (v) initial accuracy temperature coefficient (ppm/c) temperature range package description package option ordering quantity branding (mv) (%) adr03ar 2.5 5 0.2 10 C40c to +125c 8-lead soic_n r-8 98 adr03ar-reel7 2.5 5 0.2 10 C40c to +125c 8-lead soic_n r-8 1,000 adr03arz 1 2.5 5 0.2 10 C40c to +125c 8-lead soic_n r-8 98 adr03arz-reel7 1 2.5 5 0.2 10 C40c to +125c 8-lead soic_n r-8 1,000 adr03br 2.5 2.5 0.1 3 C40c to +125c 8-lead soic_n r-8 98 adr03br-reel7 2.5 2.5 0.1 3 C40c to +125c 8-lead soic_n r-8 1,000 adr03brz 1 2.5 2.5 0.1 3 C40c to +125c 8-lead soic_n r-8 98 adr03brz-reel7 1 2.5 2.5 0.1 3 C40c to +125c 8-lead soic_n r-8 1,000 adr03auj-reel7 2.5 5 0.2 25 C40c to +125c 5-lead tsot uj-5 3,000 rfa adr03auj-r2 2.5 5 0.2 25 C40c to +125c 5-lead tsot uj-5 250 rfa adr03aujz-reel7 1 2.5 5 0.2 25 C40c to +125c 5-lead tsot uj-5 3,000 r1j adr03buj-reel7 2.5 2.5 0.1 9 C40c to +125c 5-lead tsot uj-5 3,000 rfb adr03buj-r2 2.5 2.5 0.1 9 C40c to +125c 5-lead tsot uj-5 250 rfb adr03bujz-reel7 1 2.5 2.5 0.1 9 C40c to +125c 5-lead tsot uj-5 3,000 r1k adr03aks-reel7 2.5 5 0.2 25 C40c to +125c 5-lead sc70 ks-5 3,000 rfa adr03aks-r2 2.5 5 0.2 25 C40c to +125c 5-lead sc70 ks-5 250 rfa adr03aksz-reel7 1 2.5 5 0.2 25 C40c to +125c 5-lead sc70 ks-5 3,000 r1j adr03bks-reel7 2.5 2.5 0.1 9 C40c to +125c 5-lead sc70 ks-5 3,000 rfb adr03bks-r2 2.5 2.5 0.1 9 C40c to +125c 5-lead sc70 ks-5 250 rfb adr03bksz-reel7 1 2.5 2.5 0.1 9 C40c to +125c 5-lead sc70 ks-5 3,000 r1k adr03crz 1 2.5 5 0.1 40 C40c to +125c 8-lead soic_n r-8 98 adr03crz-reel 1 2.5 5 0.1 40 C40c to +125c 8-lead soic_n r-8 2,500 1 z = rohs compliant part.
adr01/adr02/adr03/adr06 rev. l | page 21 of 24 adr06 ordering guide model output voltage v o (v) temperature coefficient (ppm/c) temperature range package description package option ordering quantity initial accuracy (mv) (%) branding adr06ar 3 6 0.2 10 C40c to +125c 8-lead soic _ n r-8 98 adr06ar-reel7 3 6 0.2 10 C40c to +125c 8-lead soic _ n r-8 1,000 adr06arz 1 3 6 0.2 10 C40c to +125c 8-lead soic _ n r-8 98 adr06arz-reel7 1 3 6 0.2 10 C40c to +125c 8-lead soic _ n r-8 1,000 ADR06BR 3 3 0.1 3 C40c to +125c 8-lead soic _ n r-8 98 ADR06BR-reel7 3 3 0.1 3 C40c to +125c 8-lead soic _ n r-8 1,000 ADR06BRz 1 3 3 0.1 3 C40c to +125c 8-lead soic _ n r-8 98 adr03brz-reel7 1 3 3 0.1 3 C40c to +125c 8-lead soic _ n r-8 1,000 adr06auj-reel7 3 6 0.2 25 C40c to +125c 5-lead tsot uj-5 3,000 rwa adr06auj-r2 3 6 0.2 25 C40c to +125c 5-lead tsot uj-5 250 rwa adr06aujz-reel7 1 3 6 0.2 25 C40c to +125c 5-lead tsot uj-5 3,000 r1l adr06buj-reel7 3 3 0.1 9 C40c to +125c 5-lead tsot uj-5 3,000 rwb adr06buj-r2 3 3 0.1 9 C40c to +125c 5-lead tsot uj-5 250 rwb adr06bujz-reel7 1 3 3 0.1 9 C40c to +125c 5-lead tsot uj-5 3,000 r1m adr06aks-reel7 3 6 0.2 25 C40c to +125c 5-lead sc70 ks-5 3,000 rwa adr06aks-r2 3 6 0.2 25 C40c to +125c 5-lead sc70 ks-5 250 rwa adr06aksz-reel7 1 3 6 0.2 25 C40c to +125c 5-lead sc70 ks-5 3,000 r1l adr06bks-reel7 3 3 0.1 9 C40c to +125c 5-lead sc70 ks-5 3,000 rwb adr06bks-r2 3 3 0.1 9 C40c to +125c 5-lead sc70 ks-5 250 rwb adr06bksz-reel7 1 3 3 0.1 9 C40c to +125c 5-lead sc70 ks-5 3,000 r1m adr06crz 1 3 6 0.2 40 C40c to +125c 8-lead soic _ n r-8 98 adr06crz-reel 1 3 6 0.2 40 C40c to +125c 8-lead soic _ n r-8 2,500 1 z = rohs compliant part.
adr01/adr02/adr03/adr06 rev. l | page 22 of 24 notes
adr01/adr02/adr03/adr06 rev. l | page 23 of 24 notes
adr01/adr02/adr03/adr06 rev. l | page 24 of 24 notes ?2002C2008 analog devices, inc. all rights reserved. trademarks and registered trademarks are the prop erty of their respective owners. d02747-0-12/08(l)

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