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1 300na nanopower voltage references isl21080 the isl21080 analog voltage references feature low supply voltage operation at ultra-low 310na typ, 1.5a max operating current. additionally, the isl21080 family features guaranteed initial accuracy as low as 0.2% and 50ppm/c temperature coefficient. these references are ideal for general purpose portable applications to extend battery life at lower cost. the isl21080 is provided in the industry standard 3 ld sot-23 pinout. the isl21080 output voltages can be used as precision voltage sources for voltage monitors, control loops, standby voltages for low power states for dsp, fpga, datapath controllers, microcontrollers and other core voltages: 0.9v, 1.024v, 1.25v, 1.5v, 2.048v, 2.5v, 3.0v, 3.3v, 4.096v and 5.0v. special note: post-assembly x-ray in spection may lead to permanent changes in device output voltage and should be minimized or avoided. for further information, please see ?applications information? on page 14 and an1533 , ?x-ray effects on intersil fga references?. applications ? energy harvesting applications ? wireless sensor ne twork applications ? low power voltage sources for controllers, fpga, asics or logic devices ? battery management/monitoring ? low power standby voltages ?portable instrumentation ? consumer/medical electronics ? wearable electronics ? lower cost industrial and instrumentation ? power regulation circuits ? control loops and compensation networks ? led/diode supply features ? reference output voltage . . . . . . . . 0.900v, 1.024v, 1.250v, 1.500v, 2.048v, 2.500v, 3.000v, 3.300v, 4.096v, 5.000v ? initial accuracy: - isl21080-09 and -10 . . . . . . . . . . . . . . . . . . . . . . . . . 0.7% - isl21080-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.6% - isl21080-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5% - isl21080-20 and -25 . . . . . . . . . . . . . . . . . . . . . . . . . 0.3% - isl21080-30, -33, -41, and -50 . . . . . . . . . . . . . . . . . 0.2% ? input voltage range: - isl21080-09. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.0v to 5.5v - isl21080-10, -12, -15, -20 and -25. . . . . . . . . 2.7v to 5.5v - isl21080-30. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.2v to 5.5v - isl21080-33. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5v to 5.5v - isl21080-41. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5v to 8.0v - isl21080-50. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5v to 8.0v ? output voltage noise . . . . . . . . . . . . .30v p-p (0.1hz to 10hz) ? supply current . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5a (max) ? tempco . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50ppm/c ? output current capability. . . . . . . . . . . . . . . . . . . . . . . . . 7ma ? operating temperature range. . . . . . . . . . . . . -40c to +85c ? package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 ld sot-23 ? pb-free (rohs compliant) related literature ? see an1494 , ?reflow and pc board assembly effects on intersil fga references? ? see an1533 , ?x-ray effects on intersil fga references? ? see an1761 , ?isl21080xxev1z user?s guide? figure 1. i in vs v in , 3 units 0 100 200 300 400 500 v in (v) i n (na) unit 1 unit 3 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5 unit 2 june 23, 2014 fn6934.5 caution: these devices are sensitive to electrostatic discharge; follow proper ic handling procedures. 1-888-intersil or 1-888-468-3774 | copyright intersil americas llc 2009, 2010, 2014. all rights reserved intersil (and design) is a trademark owned by intersil corporation or one of its subsidiaries. all other trademarks mentioned are the property of their respective owners.
isl21080 2 fn6934.5 june 23, 2014 submit document feedback pin configuration isl21080 (3 ld sot-23) top view 1 2 3 v out gnd v in pin descriptions pin number pin name description 1v in input voltage connection. 2v out voltage reference output 3 gnd ground connection ordering information part number (notes 1, 2, 3) part marking (note 4) v out option (v) grade (%) temp. range (c) package tape & reel (pb-free) pkg. dwg. # isl21080dih309z-tk bcla 0.9 0.7 -40 to +85 3 ld sot-23 p3.064 isl21080dih310z-tk bcma 1.024 0.7 -40 to +85 3 ld sot-23 p3.064 isl21080dih312z-tk bcna 1.25 0.6 -40 to +85 3 ld sot-23 p3.064 isl21080cih315z-tk bcda 1.5 0.5 -40 to +85 3 ld sot-23 p3.064 isl21080cih320z-tk bcpa 2.048 0.3 -40 to +85 3 ld sot-23 p3.064 isl21080cih325z-tk bcra 2.5 0.3 -40 to +85 3 ld sot-23 p3.064 isl21080cih330z-tk bcsa 3.0 0.2 -40 to +85 3 ld sot-23 p3.064 isl21080cih333z-tk bcta 3.3 0.2 -40 to +85 3 ld sot-23 p3.064 ISL21080CIH341z-tk bcva 4.096 0.2 -40 to +85 3 ld sot-23 p3.064 isl21080cih350z-tk bcwa 5.0 0.2 -40 to +85 3 ld sot-23 p3.064 notes: 1. please refer to tb347 for details on reel specifications. 2. these intersil pb-free plastic packaged products employ spec ial pb-free material sets, molding compounds/die attach materials , and 100% matte tin plate plus anneal (e3 termination finish , which is rohs compliant and compatible wi th both snpb and pb-free soldering opera tions). intersil pb-free products are msl classified at pb-fr ee peak reflow temperatures that meet or exceed the pb-free requirements of ipc/jed ec j std-020. 3. for moisture sensitivity level (msl), please see device information page for isl21080 . for more information on msl please see techbrief tb363 . 4. the part marking is located on the bottom of the part.
isl21080 3 fn6934.5 june 23, 2014 submit document feedback absolute maximum rating s thermal information max voltage v in to gnd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5v to +6.5v v in to gnd (isl21080-41 and 50 only) . . . . . . . . . . . . . . . -0.5v to +10v v out to gnd (10s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5v to vout +1v v out to gnd (10s) isl21080-41 and 50 only . . . . . . . . . . . . . . . . . . . . . . -0.5v to +5.1v esd ratings human body model (tested to jesd22-a114) . . . . . . . . . . . . . . . . . . 5kv machine model (tested to jesd22-a115) . . . . . . . . . . . . . . . . . . . . . 500v charged device model (tested to jesd22-c101) . . . . . . . . . . . . . . . . 2kv latch up (tested per jesd-78b; class 2, level a) . . . . . . . . . . . . . . 100ma environmental operating conditions x-ray exposure (note 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10mrem thermal resistance (typical) ? ja (c/w) ? jc (c/w) 3 lead sot-23 (notes 6, 7) . . . . . . . . . . . . . . 275 110 maximum junction temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . .+107c continuous power dissipation (t a = +85c) . . . . . . . . . . . . . . . . . . . 99mw storage temperature range. . . . . . . . . . . . . . . . . . . . . . . .-65c to +150c pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see tb493 recommended operating conditions temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40c to +85c supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.7v to 5.5v caution: do not operate at or near the maximum ratings listed for extended periods of time. exposure to such conditions may adv ersely impact product reliability and result in failures not covered by warranty. notes: 5. measured with no filtering, distance of 10? from source, in tensity set to 55kv and 70ma current, 30s duration. other exposure levels should be analyzed for output voltage drift effects. see ?applications information? on page 14. 6. ? ja is measured with the component mounted on a high effective thermal conductivity test board in free air. see tech brief tb379 for details. 7. for ? jc , the ?case temp? location is taken at the package top center. 8. post-reflow drift for the isl21080 devices will range from 100v to 1.0mv based on experimental results with devices on fr4 d ouble sided boards. the design engineer must take this into account wh en considering the reference voltage after assembly. 9. post-assembly x-ray inspection may also lead to permanent change s in device output voltage and should be minimized or avoided . initial accuracy can change 10mv or more under extreme radiation. most inspection equipment will not affect the fga reference voltage, but if x- ray inspection is required, it is advisable to monitor the reference outp ut voltage to verify excessive shift has not occurred. electrical specifications (isl21080-09, v out = 0.9v) v in = 3.0v, t a = -40c to +85c, i out = 0, unless otherwise specified. boldface limits apply over the operating temperature range, -40c to +85c. parameter description conditions min (note 13) typ max (note 13) unit v out output voltage 0.9 v v oa v out accuracy @ t a = +25c (notes 8, 9) -0.7 +0.7 % tc v out output voltage temperature coefficient (note 10) 50 ppm/c v in input voltage range 2.0 5.5 v i in supply current 0.35 1.5 a ? v out / ? v in line regulation 2v < v in < 5.5v 30 350 v/v ? v out / ? i out load regulation sourcing: 0ma ? i out ? 10ma 6 100 v/ma sinking: -10ma ? i out ?? 0ma 23 350 v/ma i sc short circuit current t a = +25c, v out tied to gnd 30 ma t r turn-on settling time v out = 0.1% with no load 1 ms ripple rejection f = 120hz -40 db e n output voltage noise 0.1hz ? f ?? 10hz 40 v p-p v n broadband voltage noise 10hz ? f ?? 1khz 10 v rms noise density f = 1khz 1.1 v/ ? hz ? v out / ? t a thermal hysteresis (note 11) ? t a = +125c 100 ppm ? v out / ? t long term stability (note 12) t a = +25c 60 ppm
isl21080 4 fn6934.5 june 23, 2014 submit document feedback electrical specifications (isl21080-10, v out = 1.024v) v in = 3.0v, t a = -40c to +85c, i out = 0, unless otherwise specified. boldface limits apply over the operat ing temperature range, -40c to +85c. parameter description conditions min (note 13) typ max (note 13) unit v out output voltage 1.024 v v oa v out accuracy @ t a = +25c (notes 8, 9) -0.7 +0.7 % tc v out output voltage temperature coefficient (note 10) 50 ppm/c v in input voltage range 2.7 5.5 v i in supply current 0.31 1.5 a ? v out / ? v in line regulation 2.7v < v in < 5.5v 80 350 v/v ? v out / ? i out load regulation sourcing: 0ma ? i out ? 7ma 25 100 v/ma sinking: -7ma ? i out ?? 0ma 50 350 v/ma i sc short circuit current t a = +25c, v out tied to gnd 50 ma t r turn-on settling time v out = 0.1% with no load 4 ms ripple rejection f = 120hz -40 db e n output voltage noise 0.1hz ? f ?? 10hz 30 v p-p v n broadband voltage noise 10hz ? f ?? 1khz 52 v rms noise density f = 1khz 2.2 v/ ? hz ? v out / ? t a thermal hysteresis (note 11) ? t a = +165c 100 ppm ? v out / ? t long term stability (note 12) t a = +25c 50 ppm electrical specifications (isl21080-12, v out = 1.25v) v in = 3.0v, t a = -40c to +85c, i out = 0, unless otherwise specified. boldface limits apply over the operating temperature range, -40c to +85c. parameter description conditions min (note 13) typ max (note 13) unit v out output voltage 1.25 v v oa v out accuracy @ t a = +25c (notes 8, 9) -0.6 +0.6 % tc v out output voltage temperature coefficient (note 10) 50 ppm/c v in input voltage range 2.7 5.5 v i in supply current 0.31 1.5 a ? v out / ? v in line regulation 2.7v < v in < 5.5v 80 350 v/v ? v out / ? i out load regulation sourcing: 0ma ? i out ? 7ma 25 100 v/ma sinking: -7ma ? i out ?? 0ma 50 350 v/ma i sc short circuit current t a = +25c, v out tied to gnd 50 ma t r turn-on settling time v out = 0.1% with no load 4 ms ripple rejection f = 120hz -40 db e n output voltage noise 0.1hz ? f ?? 10hz 30 v p-p v n broadband voltage noise 10hz ? f ?? 1khz 52 v rms noise density f = 1khz 1.1 v/ ? hz ? v out / ? t a thermal hysteresis (note 11) ? t a = +165c 100 ppm ? v out / ? t long term stability (note 12) t a = +25c 50 ppm
isl21080 5 fn6934.5 june 23, 2014 submit document feedback d electrical specifications (isl21080-15, v out = 1.5v) v in = 3.0v, t a = -40c to +85c, i out = 0, unless otherwise specified. boldface limits apply over the operating temperature range, -40c to +85c. parameter description conditions min (note 13) typ max (note 13) unit v out output voltage 1.5 v v oa v out accuracy @ t a = +25c (notes 8, 9) -0.5 +0.5 % tc v out output voltage temperature coefficient (note 10) 50 ppm/c v in input voltage range 2.7 5.5 v i in supply current 0.31 1.5 a ? v out / ? v in line regulation 2.7v < v in < 5.5v 80 350 v/v ? v out / ? i out load regulation sourcing: 0ma ? i out ? 7ma 10 100 v/ma sinking: -7ma ? i out ?? 0ma 50 350 v/ma i sc short circuit current t a = +25c, v out tied to gnd 50 ma t r turn-on settling time v out = 0.1% with no load 4 ms ripple rejection f = 120hz -40 db e n output voltage noise 0.1hz ? f ?? 10hz 30 v p-p v n broadband voltage noise 10hz ? f ?? 1khz 52 v rms noise density f = 1khz 1.1 v/ ? hz ? v out / ? t a thermal hysteresis (note 11) ? t a = +165c 100 ppm ? v out / ? t long term stability (note 12) t a = +25c 50 ppm electrical specifications (isl21080-20, v out = 2.048v) v in = 3.0v, t a = -40c to +85c, i out = 0, unless otherwise specified. boldface limits apply over the operating temperature range, -40c to +85c. parameter description conditions min (note 13) typ max (note 13) unit v out output voltage 2.048 v v oa v out accuracy @ t a = +25c (notes 8, 9) -0.3 +0.3 % tc v out output voltage temperature coefficient (note 10) 50 ppm/c v in input voltage range 2.7 5.5 v i in supply current 0.31 1.5 a ? v out / ? v in line regulation 2.7v < v in < 5.5v 80 350 v/v ? v out / ? i out load regulation sourcing: 0ma ? i out ? 7ma 25 100 v/ma sinking: -7ma ? i out ?? 0ma 50 350 v/ma i sc short circuit current t a = +25c, v out tied to gnd 50 ma t r turn-on settling time v out = 0.1% with no load 4 ms ripple rejection f = 120hz -40 db e n output voltage noise 0.1hz ? f ?? 10hz 30 v p-p v n broadband voltage noise 10hz ? f ?? 1khz 52 v rms noise density f = 1khz 1.1 v/ ? hz ? v out / ? t a thermal hysteresis (note 11) ? t a = +165c 100 ppm ? v out / ? t long term stability (note 12) t a = +25c 50 ppm
isl21080 6 fn6934.5 june 23, 2014 submit document feedback electrical specifications (isl21080-25, v out = 2.5v) v in = 3.0v, t a = -40c to +85c, i out = 0, unless otherwise specified. boldface limits apply over the operating temperature range, -40c to +85c. parameter description conditions min (note 13) typ max (note 13) unit v out output voltage 2.5 v v oa v out accuracy @ t a = +25c (notes 8, 9) -0.3 +0.3 % tc v out output voltage temperature coefficient (note 10) 50 ppm/c v in input voltage range 2.7 5.5 v i in supply current 0.31 1.5 a ? v out / ? v in line regulation 2.7v < v in < 5.5v 80 350 v/v ? v out / ? i out load regulation sourcing: 0ma ? i out ? 7ma 25 100 v/ma sinking: -7ma ? i out ?? 0ma 50 350 v/ma i sc short circuit current t a = +25c, v out tied to gnd 50 ma t r turn-on settling time v out = 0.1% with no load 4 ms ripple rejection f = 120hz -40 db e n output voltage noise 0.1hz ? f ?? 10hz 30 v p-p v n broadband voltage noise 10hz ? f ?? 1khz 52 v rms noise density f = 1khz 1.1 v/ ? hz ? v out / ? t a thermal hysteresis (note 11) ? t a = +165c 100 ppm ? v out / ? t long term stability (note 12) t a = +25c 50 ppm electrical specifications (isl21080-30, v out = 3.0v) v in = 5.0v, t a = -40c to +85c, i out = 0, unless otherwise specified. boldface limits apply over the operating temperature range, -40c to +85c. parameter description conditions min (note 13) typ max (note 13) unit v out output voltage 3.0 v v oa v out accuracy @ t a = +25c (notes 8, 9) -0.2 +0.2 % tc v out output voltage temperature coefficient (note 10) 50 ppm/c v in input voltage range 3.2 5.5 v i in supply current 0.31 1.5 a ? v out / ? v in line regulation 3.2v < v in < 5.5v 80 350 v/v ? v out / ? i out load regulation sourcing: 0ma ? i out ? 7ma 25 100 v/ma sinking: -7ma ? i out ?? 0ma 50 350 v/ma i sc short circuit current t a = +25c, v out tied to gnd 50 ma t r turn-on settling time v out = 0.1% with no load 4 ms ripple rejection f = 120hz -40 db e n output voltage noise 0.1hz ? f ?? 10hz 30 v p-p v n broadband voltage noise 10hz ? f ?? 1khz 52 v rms noise density f = 1khz 1.1 v/ ? hz ? v out / ? t a thermal hysteresis (note 11) ? t a = +165c 100 ppm ? v out / ? t long term stability (note 12) t a = +25c 50 ppm
isl21080 7 fn6934.5 june 23, 2014 submit document feedback electrical specifications (isl21080-33, v out = 3.3v) v in = 5.0v, t a = -40c to +85c, i out = 0, unless otherwise specified. boldface limits apply over the operating temperature range, -40c to +85c. parameter description conditions min (note 13) typ max (note 13) unit v out output voltage 3.3 v v oa v out accuracy @ t a = +25c (notes 8, 9) -0.2 +0.2 % tc v out output voltage temperature coefficient (note 10) 50 ppm/c v in input voltage range 3.5 5.5 v i in supply current 0.31 1.5 a ? v out / ? v in line regulation 3.5 v < v in < 5.5v 80 350 v/v ? v out / ? i out load regulation sourcing: 0ma ? i out ? 10ma 25 100 v/ma sinking: -10ma ? i out ?? 0ma 50 350 v/ma i sc short circuit current t a = +25c, v out tied to gnd 50 ma t r turn-on settling time v out = 0.1% with no load 4 ms ripple rejection f = 120hz -40 db e n output voltage noise 0.1hz ? f ?? 10hz 30 v p-p v n broadband voltage noise 10hz ? f ?? 1khz 52 v rms noise density f = 1khz 1.1 v/ ? hz ? v out / ? t a thermal hysteresis (note 11) ? t a = +165c 100 ppm ? v out / ? t long term stability (note 12) t a = +25c 50 ppm electrical specifications (isl21080-41 v out = 4.096v) v in = 5.0v, t a = -40c to +85c, i out = 0, unless otherwise specified. boldface limits apply over the operating temperature range, -40c to +85c. parameter description conditions min (note 13) typ max (note 13) unit v out output voltage 4.096 v v oa v out accuracy @ t a = +25c (notes 8, 9) -0.2 +0.2 % tc v out output voltage temperature coefficient (note 10) 50 ppm/c v in input voltage range 4.5 8.0 v i in supply current 0.5 1.5 a ? v out / ? v in line regulation 4.5 v < v in < 8.0v 80 350 v/v ? v out / ? i out load regulation sourcing: 0ma ? i out ? 10ma 10 100 v/ma sinking: -10ma ? i out ?? 0ma 20 350 v/ma i sc short circuit current t a = +25c, v out tied to gnd 80 ma t r turn-on settling time v out = 0.1% with no load 4 ms ripple rejection f = 120hz -40 db e n output voltage noise 0.1hz ? f ?? 10hz 30 v p-p v n broadband voltage noise 10hz ? f ?? 1khz 52 v rms noise density f = 1khz 1.1 v/ ? hz ? v out / ? t a thermal hysteresis (note 11) ? t a = +165c 100 ppm ? v out / ? t long term stability (note 12) t a = +25c 50 ppm
isl21080 8 fn6934.5 june 23, 2014 submit document feedback electrical specifications (isl21080-50 v out = 5.0v) v in = 6.5v, t a = -40c to +85c, i out = 0, unless otherwise specified. boldface limits apply over the operating temperature range, -40c to +85c. parameter description conditions min (note 13) typ max (note 13) unit v out output voltage 5.0 v v oa v out accuracy @ t a = +25c (notes 8, 9) -0.2 +0.2 % tc v out output voltage temperature coefficient (note 10) 50 ppm/c v in input voltage range 5.5 8.0 v i in supply current 0.5 1.5 a ? v out / ? v in line regulation 5.5 v < v in < 8.0v 80 350 v/v ? v out / ? i out load regulation sourcing: 0ma ? i out ? 10ma 10 100 v/ma sinking: -10ma ? i out ?? 0ma 20 350 v/ma i sc short circuit current t a = +25c, v out tied to gnd 80 ma t r turn-on settling time v out = 0.1% with no load 4 ms ripple rejection f = 120hz -40 db e n output voltage noise 0.1hz ? f ?? 10hz 30 v p-p v n broadband voltage noise 10hz ? f ?? 1khz 52 v rms noise density f = 1khz 1.1 v/ ? hz ? v out / ? t a thermal hysteresis (note 11) ? t a = +165c 100 ppm ? v out / ? t long term stability (note 12) t a = +25c 50 ppm notes: 10. over the specified temperature range. temperature coefficien t is measured by the box method whereby the change in v out is divided by the temperature range; in this case, -40c to +85c = +125c. 11. thermal hysteresis is the change of v out measured @ t a = +25c after temperature cycling over a specified range, ? t a . v out is read initially at t a = +25c for the device under test. the device is temperature cycled and a second v out measurement is taken at +25c. the difference between the initial v out reading and the second v out reading is then expressed in ppm. for ? t a = +125c, the device under test is cycled from +25c to +85c to -40c to +25c. 12. long term drift is logarithmic in nature and diminishes over time. drift after the first 1000 hours will be approximately 10 ppm/ ? 1khrs. 13. parameters with min and/or max limits are 100% tested at +25c , unless otherwise specified. te mperature limits established b y characterization and are not production tested. typical performance characteristics curves v out = 0.9v, v in = 3.0v, i out = 0ma, t a = +25c unless otherwise specified. figure 2. i in vs v in , 3 units figure 3. i in vs v in over-temperature 0 0.1 0.2 0.3 0.4 0.5 0.6 2.0 2.4 2.8 3.2 3.6 4.0 4.4 4.8 5.2 i in (a) v in (v) typ low high v in (v) i in (a) 0 0.1 0.2 0.3 0.4 0.5 0.6 2.0 2.4 2.8 3.2 3.6 4.0 4.4 4.8 5.2 +85c -40c +25c
isl21080 9 fn6934.5 june 23, 2014 submit document feedback figure 4. line regulation, 3 units figure 5. line regula tion over-temperature figure 6. v out vs temperature normalized to +25c figure 7. line transient resp onse, with capacitive load figure 8. line transient response figure 9. load regulation over-temperature typical performance characteristics curves v out = 0.9v, v in = 3.0v, i out = 0ma, t a = +25c unless otherwise specified. (continued) 0.89980 0.89985 0.89990 0.89995 0.90000 0.90005 0.90010 0.90015 0.90020 2.02.42.83.23.64.04.44.85.2 0.9v at v in = 3.0v v in (v) typ v out (v) normalized to high low v in (v) v in = 3.0v v out (v) normalized to -150 -100 -50 0 50 100 150 200 2.0 2.4 2.8 3.2 3.6 4.0 4.4 4.8 5.2 +25c +85c -40c 0.8990 0.8995 0.9000 0.9005 0.9010 -40 -30 -20 -10 0 10 30 40 50 60 70 80 v out (v) normalized to +25c temperature (c) typ high low 20 -200 -150 -100 -50 0 50 100 150 200 0 0.5 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 time (s) ? v in = +0.3v ? v in = -0.3v ? v out (mv) 1.0 -200 -150 -100 0 50 100 150 200 ? v in = +0.3v ? v in = -0.3v ? v out (mv) -50 time (s) 0 0.5 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 1.0 -500 0 500 -10-9-8-7-6-5-4-3-2 -1 1 3 5 7 910 load (ma) sinking sourcing +25c +85c -40c v out (v) 8 6 4 2 0
isl21080 10 fn6934.5 june 23, 2014 submit document feedback figure 10. load transient response figure 11. load transient response figure 12. dropout figure 13. turn-on time typical performance characteristics curves v out = 1.5v, v in = 3.0v, i out = 0ma, t a = +25c unless otherwise specified. figure 14. i in vs v in , 3 units figure 15. i in vs v in over-temperature typical performance characteristics curves v out = 0.9v, v in = 3.0v, i out = 0ma, t a = +25c unless otherwise specified. (continued) -1000 -800 -600 -400 -200 0 200 400 600 800 1000 time (ms) 012345678910 ? v out (mv) i load = +7ma i load = -7ma -500 -400 -300 -200 -100 0 100 200 300 400 500 time (ms) 012345678910 ? v out (mv) i load = +50a i load = -50a 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 v out (v) v in (v) no load 7ma 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0 0.3 0.6 0.9 1.2 1.5 time (ms) v out (v) typ high vdd low 0 100 200 300 400 500 v in (v) i n (na) unit 1 unit 3 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 unit 2 0 100 200 300 400 500 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 -40c +85c i n (na) v in (v) +25c
isl21080 11 fn6934.5 june 23, 2014 submit document feedback figure 16. line regulation, 3 units figure 17. line regulation over-temperature figure 18. v out vs temperature normalized to +25c figure 19. line transient resp onse, with capacitive load figure 20. line transient response figure 21. load regulation over-temperature typical performance characteristics curves v out = 1.5v, v in = 3.0v, i out = 0ma, t a = +25c unless otherwise specified. (continued) 1.49980 1.49985 1.49990 1.49995 1.50005 1.50010 1.50015 1.50020 (normailized to 1.5v at v in = 3v) 1.50000 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 v out (v) unit 2 unit 3 unit 1 v in (v) -150 -125 -100 -75 -50 -25 0 25 50 75 100 125 150 2.73.13.53.94.34.75.15.5 (normalized to v in = 3v) +85c +25c -40c out (v) v v in (v) 1.4995 1.4996 1.4997 1.4998 1.4999 1.5000 1.5001 1.5002 1.5003 1.5004 1.5005 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 v in (v) v out (v) unit 1 unit 3 unit 2 c l = 500pf ? v in = -0.3v ? v in = 0.3v 1ms/div 50mv/div ? v in = 0.3v ? v in = -0.3v c l = 0pf 1ms/div 50mv/div -500 -300 -100 100 300 500 700 900 -7 -6 -5 -4 -3 -2 -1 sinking output current sourcing ? v out (v) 01234567 +85c -40c +25c 0
isl21080 12 fn6934.5 june 23, 2014 submit document feedback figure 22. load transient response figure 23. load transient response figure 24. dropout figure 25. turn-on time figure 26. z out vs frequency figure 27. psrr vs frequency typical performance characteristics curves v out = 1.5v, v in = 3.0v, i out = 0ma, t a = +25c unless otherwise specified. (continued) i l = 7ma 2ms/div 500mv/div i l = -7ma i l = 50 ? a i l = -50 ? a 100mv/div 1ms/div 1.38 1.40 1.42 1.44 1.46 1.48 1.50 1.52 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 v in (v) v out (v) 7ma load no load 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 time (ms) voltage (v) vin unit 1 unit 3 unit 2 0 20 40 60 80 100 120 140 160 10 100 1k 10k 100k 1m frequency (hz) z out ( ) 1nf 10nf 100nf no load -70 -60 -50 -40 -30 -20 -10 0 10 100 1k 10k 100k frequency (hz) psrr (db) 1m no load 1nf 10nf 100nf
isl21080 13 fn6934.5 june 23, 2014 submit document feedback typical performance characteristics curves t a = +25c unless otherwise specified. figure 28. dropout, isl21080-10 figure 29. dropout, isl21080-12 figure 30. dropout, isl21080-25 figure 31. dropout, isl21080-30 figure 32. dropout, isl21080-33 figure 33. dropout, isl21080-41 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 v out (v) v in (v) no load 7ma 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.3 1.5 1.7 1.9 2.1 2.3 2.5 2.7 2.9 v out (v) v in (v) no load 7ma 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0 2.5 2.7 2.9 3.1 3.3 3.5 v out (v) v in (v) no load 7ma 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.0 3.2 3.4 3.6 3.8 4.0 v out (v) v in (v) no load 7ma 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.3 3.5 3.7 3.9 4.1 4.3 4.5 v out (v) v in (v) no load 7ma 3.7 3.8 3.9 4.0 4.1 4.2 4.3 4.1 4.3 4.5 4.7 4.9 5.1 v out (v) v in (v) no load 7ma
isl21080 14 fn6934.5 june 23, 2014 submit document feedback applications information fga technology the isl21080 series of voltage references use the floating gate technology to create references with very low drift and supply current. essentially, the charge stored on a floating gate cell is set precisely in manufacturing. the refe rence voltage output itself is a buffered version of the floating gate voltage. the resulting reference device has excellent characteristics which are unique in the industry: very low temperature drift, high initial accuracy, and almost zero supply current. also, the reference voltage itself is not limited by voltage bandgaps or zener settings, so a wide range of reference voltages can be programmed (standard voltage settings are provided, but customer-specific voltages are available). the process used for these reference devices is a floating gate cmos process, and the amplifier circuitry uses cmos transistors for amplifier and output transistor circuitry. whil e providing excellent accuracy, there are limitations in output noise level and load regulation due to the mos device characteristics. these limi tations are addressed with circuit techniques discussed in other sections. board assembly considerations fga references provide high accuracy and low temperature drift but some pc board assembly pr ecautions are necessary. normal output voltage shifts of 100v to 1mv can be expected with pb-free reflow profiles or wave solder on multi-layer fr4 pc boards. precautions should be ta ken to avoid excessive heat or extended exposure to high reflow or wave solder temperatures, this may reduce device initial accuracy. post-assembly x-ray inspection may al so lead to permanent changes in device output voltage and should be minimized or avoided. if x-ray inspection is required, it is advisable to monitor the reference output voltage to verify excessive shift ha s not occurred. if large amounts of shift are observed, it is best to add an x-ray shield consisting of thin zinc (300m) sheeting to allow clear imaging, yet block x-ray energy that affects the fga reference. special applications considerations in addition to post-assembly ex amination, there are also other x-ray sources that may affect the fga reference long term accuracy. airport screening machines contain x-rays and will have a cumulative effect on the voltage reference output accuracy. carry-on luggage screening uses low level x-rays and is figure 34. dropout, isl21080-50 high current application figure 35. different v in at room temperature figure 36. different v in at high temperature (+85c) typical performance characteristics curves t a = +25c unless otherwise specified. (continued) 4.7 4.8 4.9 5.0 5.1 5.2 5.3 5.0 5.2 5.4 5.6 5.8 6.0 v out (v) v in (v) no load 7ma 1.492 1.494 1.496 1.498 1.500 1.502 0 5 10 15 20 25 30 i load (ma) v ref (v) 35 v in = 5v v in = 3.3v v in = 3.5v 1.492 1.494 1.496 1.498 1.500 1.502 0 5 10 15 20 25 30 i load (ma) v ref (v) v in = 5v v in = 3.5v v in = 3.3v 35
isl21080 15 fn6934.5 june 23, 2014 submit document feedback not a major source of output voltage shift, however, if a product is expected to pass through that type of screening over 100 times, it may need to consider shielding with copper or aluminum. checked luggage x-rays are higher intensity and can cause output voltage shift in much fewer passes, thus devices expected to go through those machines should definitely consider shielding. note that just two layers of 1/2 ounce copper planes will reduce the received dose by over 90%. the leadframe for the device which is on the bottom also provides similar shielding. if a device is expected to pass through luggage x-ray machines numerous times, it is advised to mount a 2-layer (minimum) pc board on the top, and along with a ground plane underneath will effectively shield it from 50 to 100 passes through the machine. since these machines vary in x-ray dose delivered, it is difficult to produce an accurate maximum pass recommendation. nanopower operation reference devices achieve their highest accuracy when powered up continuously, and after initia l stabilization has taken place. this drift can be eliminated by leaving the power on continuously. the isl21080 is the first high precision voltage reference with ultra low power consumption that makes it possible to leave power on continuously in battery operated circuits. the isl21080 consumes extremely low supply current due to the proprietary fga technology. supply current at room temperature is typically 350na, which is 1 to 2 orders of magnitude lower than competitive devices. application circuits using battery power will bene fit greatly from having an accurate, stable reference, which essentially presents no load to the battery. in particular, battery powered data converter circuits that would normally require the entire circuit to be disabled when not in use can remain powered up between conversions as shown in figure 37. data acquisition circuits providing 12 bits to 24 bits of accuracy can operate with the reference device continuously biased with no power penalty, pr oviding the highest accuracy and lowest possible long term drift. other reference devices consuming higher supply currents will need to be disabled in between conversions to conserve battery capacity. absolute accuracy will suffer as the device is biased and requires time to settle to its final value, or, may not actually settle to a final value as power on time may be short. table 1 shows an example of battery life in years for isl21080 in various power on condition with 1.5a maximum current consumption. isl21080 used as a low cost precision current source using an n-jet and a nanopower voltage reference, isl21080, a precision, low cost, high impedance current source can be created. the precision of the current source is largely dependent on the tempco and accuracy of th e reference. the current setting resistor contributes less than 20% of the error. board mounting considerations for applications requiring the hi ghest accuracy, board mounting location should be reviewed. placing the device in areas subject to slight twisting can cause degrad ation of the accuracy of the reference voltage due to die stresses. it is normally best to place the device near the edge of a board, or the shortest side, as the axis of bending is most limited at that location. obviously, mounting the device on flexprint or extremely thin pc material will likewise cause loss of reference accuracy. table 1. example of battery life in years for isl21080 in various power on conditions with 1.5a max current battery rating (mah) continuous 50% duty cycle 10% duty cycle 40 3 6 30* 225 16.3* 32.6* 163* note: *typical li-ion battery has a shelf life of up to 10 years. v in = +3.0v 0.001f to 0.01f serial bus v in v out gnd isl21080 ref in enable sck sdat a/d converter 12 to 24-bit 0.01f 10f figure 37. reference input for adc converter figure 38. isl21080 used as a low cost precision current source +8v to 28v 0.01f v in v out 10k r set 0.1% 10ppm/c i sy ~ 0.31a il at 0.1% accuracy ~150.3a isl21080-1.5 z out > 100m ? i set v out i set = r set i l = i set + ir set v out = 1.5v gnd
isl21080 16 intersil products are manufactured, assembled and tested utilizing iso9001 quality systems as noted in the quality certifications found at www.intersil.com/en/suppor t/qualandreliability.html intersil products are sold by description only. intersil corporat ion reserves the right to make changes in circuit design, soft ware and/or specifications at any time without notice. accordingly, the reader is cautioned to verify that data sheets are current before placing orders. information furnished by intersil is believed to be accurate and reliable. however, no responsi bility is assumed by intersil or its subsid iaries for its use; nor for any infringem ents of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of i ntersil or its subsidiaries. for information regarding intersil corporation and its products, see www.intersil.com fn6934.5 june 23, 2014 for additional products, see www.intersil.com/en/products.html submit document feedback noise performance and reduction the output noise voltage in a 0.1hz to 10hz bandwidth is typically 30v p-p . this is shown in the plot in the ?typical performance characteristics curves? which begin on page 10. the noise measurement is made with a bandpass filter made of a 1-pole high-pass filter with a corner frequency at 0.1hz and a 2-pole low-pass filter with a corner frequency at 12.6hz to create a filter with a 9.9hz bandwidth. noise in the 10khz to 1mhz bandwidth is approximately 400v p-p with no capacitance on the output, as shown in figure 39. these noise measurements are made with a 2 decade bandpass filter made of a 1-pole high-pass filter with a corner frequency at 1/10 of the center frequency and 1-pole low-pass filt er with a corner frequency at 10 times the center frequency. fi gure 39 also shows the noise in the 10khz to 1mhz band can be reduced to about 50v p-p using a 0.001f capacitor on the output. noise in the 1khz to 100khz band can be further reduced using a 0.1f capacitor on the output, but noise in the 1hz to 100hz band increases due to instability of the very low power amplifier with a 0.1f capacitance load. for load capacitances above 0.001f, the noise reduction network shown in figure 40 is recommended. this network reduces noise significantly over the full bandwidth. as shown in figure 39, noise is reduced to less than 40v p-p from 1hz to 1mhz using this network with a 0.01f capacitor and a 2k ? resistor in series with a 10f capacitor. turn-on time the isl21080 devices have ultra-low supply current and thus, the time to bias-up internal circuitry to final values will be longer than with higher power references. normal turn-on time is typically 7ms. this is shown in figure 38. since devices can vary in supply current down to >300na, turn-on ti me can last up to about 12ms. care should be taken in system design to include this delay before measurements or conversions are started. temperature coefficient the limits stated for temperature coefficient (tempco) are governed by the method of measurement. the overwhelming standard for specifying the temperature drift of a reference, is to measure the reference voltage at two temperatures, take the total variation, (v high - v low ), and divide by the temperature extremes of measurement (t high ?t low ). the result is divided by the nominal reference voltage (at t = +25c) and multiplied by 10 6 to yield ppm/c. this is the ?box? method for specifying temperature coefficient. cl = 0 cl = 0.001f cl = 0.1f cl = 0.01f and 10f + 2k 400 350 300 250 200 150 100 50 0 1 10 100 1k 10k 100k noise voltage (v p-p ) figure 39. noise reduction v in = 3.0v v in v o gnd isl21080 0.01f 10f 2k 0.1f 10f figure 40. noise reduction network
isl21080 17 fn6934.5 june 23, 2014 submit document feedback typical application circuits figure 41. precision 2.5v 50ma reference figure 42. 2.5v full scale low-drift 10-bit adjustable voltage source figure 43. kelvin sensed load v in = 3.0v 2n2905 2.5v/50ma 0.001f v in v out gnd isl2108 0 r = 200 ? v in v out gnd 2.7v to 5.5v 0.1f 0.001f v out + ? v cc r h r l x9119 v ss sda scl 2-wire bus v out (buffered) 10f isl21080 0.1f v in v out gnd isl21080 v out sense load + ? 10f 2.7v to 5.5v
isl21080 18 fn6934.5 june 23, 2014 submit document feedback revision history the revision history provided is for inform ational purposes only and is believed to be accurate, but not warranted. please go t o web to make sure you have the latest rev. date revision change june 23, 2014 fn6934.5 converted to new template updated pod with following changes: in detail a, changed lead width dimension from 0.13+/-0.05 to 0.085-0.19 changed dimension of foot of lead from 0.31+/-0.10 to 0.38+/-0.10 in land pattern, added 0.4 rad typ dimension in side view, changed height of package from 0.91+/-0.03 to 0.95+/-0.07 may, 12, 2010 fn6934.4 changed theta ja in the ?thermal information? on page 3 from 170 to 275. added theta jc and applicable note . april 29, 2010 fn6934.3 incorrect thermal inform ation, needs to be re-evaluated and added at a later date when the final data is available. removed theta jc an d applicable note from ?thermal information? on page 3. april 14, 2010 corrected y axis label on figure 9 from ?v out (v)? to ?v out (v)? april 6, 2010 source/sink for 0.9v option changed from 7ma to 10ma line regulation condition for 0.9v changed from 2.7v to 2v line regulation typical for 0.9v option changed from 10 to 30v/v ? t a in thermal hysterisis conditions of 0.9v option changed from 165c to 125c moved ?board assembly considerations? and ?special applications considerations? to page 14. deleted ?handling and board mounting? section since ?board assembly considerations? on page 14 contains same discussion. added ?special note: post-assembly x-ray inspection may lead to permanent changes in device output voltage and should be minimized or avoided.? to ?isl21080? on page 1 figures 2 and 3 revised to show line regulation and iin down to 2v. figures 4 and 5 revised to show vin down to 2v. added ?initial accuracy can change 10mv or more under extreme radiation.? to note 9 on page 3. april 1, 2010 1. page 3: change vin min from 2.7 to 2.0 2. page 3: change iin typ from 0.31 to 0.35 3. page 3: change line reg typ from 80 to 10 4. page 3: change load reg condition from 7ma to 10ma and -7ma to -10ma 5. page 3: change load reg typ for source from 25 to 6 and sink from 50 to 23. 6. page 3: change isc typ from 50 to 30 7. page 3: change tr from 4 to 1 8. change ripple rejection typ for all options from -30 to -40 9. page 3: change en typ from 30 to 40v 10. page 3: change vn typ from 50 to 10v 11. page 3: change noise density typ from 1.1 to 2.2 12. page 3: change long term stability from 50 to 60 13. added figure 2 to 13 on page 8 to page 10 for 0.9v curves. 14. added figure 28 to 34 on page 13 to page 14 for other options dropout curve. 15. page 1: change input voltage range for 0.9v option from tbd to 2v to 5.5v 16. added latch up to ?absolute maximum ratings? on page 3 17. added junction temperature to ?thermal information? on page 3 18. added jedec standards used at the time of testing for ?esd ratings? on page 3 19. hbm in ?absolute maximum ratings? on page 3 changed from 5.5kv to 5kv 20. added theta jc and applicable note. march 25, 2010 throughout- converted to new format. changes made as follows: moved ?pin configuration? and ?pin descriptions? to page 2 added ?related literature? to page 1 added key selling feature gr aphic figure 1 to page 1 added "boldface limits apply..." note to common conditions of electrical specificatio ns tables on page 3 through page 8. bolded applicable specs. added note 13 to mi n max columns of all electrical specifications tables. added ??environmental operating conditions? to page 3 and added note 5 added ?the process used for these reference devices is a floating gate cmos process, and the amplifier circuitry uses cmos transistors for amplifier an d output transistor circuitry. while providing excellent accuracy, there are limitations in output noise level and load regulation due to the mos device characteristics. these limitations are addressed with circuit techniques discussed in other sections.? on page 14
isl21080 19 fn6934.5 june 23, 2014 submit document feedback about intersil intersil corporation is a leading provider of innovative power ma nagement and precision analog so lutions. the company's product s address some of the largest markets within the industrial and infrastr ucture, mobile computing and high-end consumer markets. for the most updated datasheet, application notes, related documentatio n and related parts, please see the respective product information page found at www.intersil.com . you may report errors or suggestions for improving this datasheet by visiting www.intersil.com/ask . reliability reports are also av ailable from our website at www.intersil.com/supporty oct 14,2009 fn6934.2 1. removed "coming soon" on page 1 and 2 for -10, -20, -41, and -50 options. 2. page 1. moved "isl21080-505.5v to 8.0v" from bullet to sub-bullet. 3. update package outline drawing p3.064 to most recent revision. updates to package were to add land pattern and move dimensions from table onto drawing (no change to package dimensions) sep 04, 2009 fn6934.1 converted to new intersil template. added revision history and produc ts information. updated ordering information to match intrepid, numb ered all notes and added moisture sensitivity note with links. moved pin descriptions to page 1 to follow pinout changed in features section from: reference output voltage1.25v, 1.5v, 2.500v, 3.300v to: reference output voltage 0.900v, 1.024v, 1.250v, 1.500v, 2.048v, 2.500v, 3.000v, 3.300v, 4.096v, 5.000v from: initial accuracy: 1.5v0.5% to: initial accuracy: isl21080-09 and -100.7% isl21080-12 0.6% isl21080-150.5% isl21080-20 and -250.3% isl21080-30, -33, -41, and -500.2% from: input voltage range isl21080-12 (coming soon)2.7v to 5.5v isl21080-152.7v to 5.5v isl21080-25 (coming soon)2.7v to 5.5v isl21080-33 (coming soon)3.5v to 5.5v to: input voltage range: isl21080-09, -10, -12, -15, -20, and -252.7v to 5.5v isl21080-09, -10, and 20 (coming soon) isl21080-303.2v to 5.5v isl21080-333.5v to 5.5v isl21080-41 (coming soon)4.5v to 8.0v added: isl21080-50 (coming soon)5.5v to 8.0v output voltage noise 30vp-p (0.1hz to 10hz) updated electrical spec tables by tables with voltage references 9, 10, 12, 20, 25, 30, 33 and 41. added to abs max ratings: vin to gnd (isl21080-41 and 50 only-0.5v to +10v vout to gnd (10s) (isl21080-41 and 50 only-0.5v to +5.1v changed tja in thermal information from "202.70 " to "170" to match asyd in intrepid added note: post-assembly x-ray inspection may also lead to perman ent changes in device output voltage and should be minimized or avoided. most inspection equipment will not affect the fga reference voltage, but if x-ray inspection is required, it is advisable to monitor the re ference output voltage to verify excessive shift has not occurred. added special applications consider ations section on page 12. july 28,2009 fn6934.0 initial release. revision history the revision history provided is for inform ational purposes only and is believed to be accurate, but not warranted. please go t o web to make sure you have the latest rev. date revision change
isl21080 20 fn6934.5 june 23, 2014 submit document feedback package outline drawing p3.064 3 lead small outline transistor plastic package (sot23-3) rev 3, 3/12 reference jedec to-236. footlength is measured at reference to gauge plane. dimension does not include interlead flash or protrusions. dimensioning and tolerancing conform to amsey14.5m-1994. 3. 5. 4. 2. dimensions are in millimeters. 1. notes: detail "a" side view typical recommended land pattern top view c 0.10 c 0.20 m c l c 1.300.10 c l 0.950 2.370.27 2.920.12 4 4 10 typ (2 plcs) 0.013(min) 0.100(max) seating plane 1.000.12 0.950.07 seating plane gauge plane 0.25 0.380.10 detail "a" 0.4350.065 0 - 8 deg. (2.15) (1.25) (0.60) (0.95 typ.) 5 0 . 0 8 5 - 0 . 1 9 dimensions in ( ) for reference only. interlead flash or protrusions shall not exceed 0.25mm per side. (0.4 rad typ.)

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