View LM285LPR-1-2_3889844.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

lm285-1.2, lm385-1.2, lm385b-1.2 micropower voltage references slvs075e ? april 1989 ? revised february 2002 1 post office box 655303 ? dallas, texas 75265 operating current range ? lm285 . . . 10 a to 20 ma ? lm385 . . . 15 a to 20 ma ? lm385b ...15 a to 20 ma 1% and 2% initial voltage tolerance reference impedance ? lm385...1 ? max at 25 c ? all devices . . . 1.5 ? max over full temperature range very low power consumption applications ? portable meter references ? portable test instruments ? battery-operated systems ? current-loop instrumentation ? panel meters designed to be interchangeable with national lm285-1.2 and lm385-1.2 description these micropower, two-terminal, band-gap voltage references operate over a 10- a to 20-ma current range and feature exceptionally low dynamic impedance and good temperature stability. on-chip trimming provides tight voltage tolerance. the band-gap reference for these devices has low noise and long-term stability. the design makes these devices exceptionally tolerant of capacitive loading and, thus, easier to use in most reference applications. the wide dynamic operating temperature range accommodates varying current supplies, with excellent regulation. the extremely low power drain of this series makes them useful for micropower circuitry. these voltage references can be used to make portable meters, regulators, or general-purpose analog circuitry, with battery life approaching shelf life. the wide operating current range allows them to replace older references with tighter-tolerance parts. the lm285-1.2 is characterized for operation from ?40 c to 85 c. the lm385-1.2 and lm385b-1.2 are characterized for operation from 0 c to 70 c. available options v z packaged devices t a v z tolerance small outline (d, ps) plastic (lp) 0 c to 70 c 2% lm385d-1.2 lm385ps-1.2 lm385lp-1.2 1% lm385bd-1.2 lm385blp-1.2 ?40 c to 85 c 1% lm285d-1.2 lm285lp-1.2 the d and lp packages are available taped and reeled. add the suffix r to the device type (e.g., lm385dr-1-2). the ps package is only available taped and reeled. for ordering purposes, the decimal point in the part number must be replaced with a hyphen (i.e., show the -1.2 suffix as ?-1-2?). copyright ? 2002, texas instruments incorporated production data information is current as of publication date. products conform to specifications per the terms of texas instruments standard warranty. production processing does not necessarily include testing of all parameters. please be aware that an important notice concerning availability, standard warranty, and use in critical applications of texas instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 1 2 3 4 8 7 6 5 nc nc nc anode cathode nc nc nc lm285-1.2, lm385b-1.2 ...d p ackage lm385-1.2 ...d or ps p ackage (top view) nc ? no internal connection lp package (top view) anode cathode nc nc ? no internal connection
lm285-1.2, lm385-1.2, lm385b-1.2 micropower voltage references slvs075e ? april 1989 ? revised february 2002 2 post office box 655303 ? dallas, texas 75265 symbol anode cathode schematic cathode q13 q12 q7 q4 600 k ? 7.5 k ? anode 200 k ? 50 k ? 300 k ? q14 20 pf 20 pf q11 q10 q9 q5 q3 q1 q2 q8 q6 60 k ? 500 ? 100 k ? note a: component values shown are nominal. absolute maximum ratings over operating free-air temperature range (unless otherwise noted) ? reverse current, i r 30 ma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . forward current, i f 10 ma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . package thermal impedance, ja (see notes 1 and 2): d package 97 c/w . . . . . . . . . . . . . . . . . . . . . . . . . . . . lp package 156 c/w . . . . . . . . . . . . . . . . . . . . . . . . . . ps package 95 c/w . . . . . . . . . . . . . . . . . . . . . . . . . . . lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . storage temperature range, t stg ? 65 c to 150 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ? stresses beyond those listed under ? absolute maximum ratings ? may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under ? recommended operating conditions ? is not implied. exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. notes: 1. maximum power dissipation is a function of t j(max) , ja , and t a . the maximum allowable power dissipation at any allowable ambient temperature is p d = (t j(max) ? t a )/ ja . operation at the absolute maximum t j of 150 c can affect reliability. 2. the package thermal impedance is calculated in accordance with jesd 51-7.
lm285-1.2, lm385-1.2, lm385b-1.2 micropower voltage references slvs075e ? april 1989 ? revised february 2002 3 post office box 655303 ? dallas, texas 75265 recommended operating conditions min max unit i z reference current 0.01 20 ma t a o p erating free air tem p erature range lm285-1.2 ? 40 85 c t a operating free - air temperature range lm385-1.2, lm385b-1.2 0 70 c electrical characteristics at specified free-air temperature parameter test t ? lm285-1.2 lm385-1.2 lm385b-1.2 unit parameter conditions t a ? min typ max min typ max min typ max unit v z reference voltage i z = i(min) to 20 ma ? 25 c 1.223 1.235 1.247 1.21 1.235 1.26 1.223 1.235 1.247 v vz average temperature coefficient of reference voltage i z = i(min) to 20 ma ? 25 c 20 20 20 ppm/ c change in i z = i ( min ) 25 c 1 1 1 ? v z change in reference z () to 1 ma ? full range 1.5 1.5 1.5 mv ? v z voltage with t i z = 1 ma 25 c 12 20 20 mv current z to 20 ma full range 30 30 30 ? v z / ? t long-term change in reference voltage i z = 100 a 25 c 20 20 20 ppm/khr i z (min) minimum reference current full range 8 10 8 15 8 15 a z reference i z = 100 c 0.2 0.6 0.4 1 0.4 1 ? , f = 25 hz full range 1.5 1.5 1.5 ? a, f = 10 hz to 10 khz 25 c 60 60 60 v ? full range is ? 40 c to 85 c for the lm285-1.2 and 0 c to 70 c for the lm385-1.2 and lm385b-1.2. ? i(min) = 10 a for the lm285-1.2 and 15 a for the lm385-1.2 and lm385b-1.2 the average temperature coefficient of reference voltage is defined as the total change in reference voltage divided by the spe cified temperature range.
lm285-1.2, lm385-1.2, lm385b-1.2 micropower voltage references slvs075e ? april 1989 ? revised february 2002 4 post office box 655303 ? dallas, texas 75265 typical characteristics ? figure 1 0 0.2 0.4 0.6 0.8 1 1.2 1.4 ?????? ?????? t a = ? 55 c to 125 c ? reverse current ? v r ? reverse voltage ? v 0.1 1 10 100 reverse current vs reverse voltage i r a figure 2 10 1 0.1 0.01 ? 4 0 4 8 12 16 i r ? reverse current ? ma ? reference voltage change ? mv reference voltage change vs reverse current 100 ? v z ??????? ??????? t a = ? 55 c to 125 c forward voltage vs forward current figure 3 0.01 0.1 1 10 100 0.8 1.2 0.4 0 i f ? forward current ? ma ? forward voltage ? v v f ???? ???? t a = 25 c figure 4 105 125 85 65 45 25 5 ? 15 ? 35 ? 55 1.225 1.23 1.235 1.24 1.245 t a ? free-air temperature ? c ? reference voltage ? v reference voltage vs free-air temperature v z 1.220 ? data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various dev ices.
lm285-1.2, lm385-1.2, lm385b-1.2 micropower voltage references slvs075e ? april 1989 ? revised february 2002 5 post office box 655303 ? dallas, texas 75265 typical characteristics ? figure 5 reference impedance vs reference current i z ? reference current ? ma t a = ? 55 c to 125 c f = 25 hz 100 10 1 0.1 100 10 1 0.1 0.01 z z ? reference impedance ? ? figure 6 noise voltage vs frequency vn ? noise voltage ? nv/ f ? frequency ? hz 700 600 500 400 300 200 100 0 10 100 1 k 10 k 100 k hz i z = 100 a t a = 25 c v n output noise voltage ? f ? cutoff frequency ? khz 100 10 1 0.1 70 60 50 40 30 20 10 0 i z = 100 a t a = 25 c output noise voltage vs cutoff frequency ????? ????? rc low pass v c r ???? ???? 100 a figure 7 figure 8 input v i t ? time ? s input and output voltages ? v 0 100 500 600 0 5 0 0.5 1 1.5 v o 36 k ? transient response ??? ??? output ? data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various dev ices.
lm285-1.2, lm385-1.2, lm385b-1.2 micropower voltage references slvs075e ? april 1989 ? revised february 2002 6 post office box 655303 ? dallas, texas 75265 application information + 412 ? ? 1% ? adjust for 11.15 mv at 25 c across 953 ? ? adjust for 12.17 mv at 25 c across 412 ? 2.00 k ? 1% i o 58 a + 5.1 k ? r lm334 v ? v+ 100 k ? 1% 10 k ? 953 ? ? 1% meter type k lm385-1.2 mercury cell 1.345 v ? ? 500 ? cw cw figure 9. thermocouple cold-junction compensator 2.3 v v+ 30 v r v ? v+ 2.74 k ? 1.2 v lm385-1.2 lm334 figure 10. operation over a wide supply range lm385-1.2 1.2 v 499 k ? 9 v figure 11. reference from a 9-v battery
important notice texas instruments incorporated and its subsidiaries (ti) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. all products are sold subject to ti ? s terms and conditions of sale supplied at the time of order acknowledgment. ti warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with ti ? s standard warranty. testing and other quality control techniques are used to the extent ti deems necessary to support this warranty. except where mandated by government requirements, testing of all parameters of each product is not necessarily performed. ti assumes no liability for applications assistance or customer product design. customers are responsible for their products and applications using ti components. to minimize the risks associated with customer products and applications, customers should provide adequate design and operating safeguards. ti does not warrant or represent that any license, either express or implied, is granted under any ti patent right, copyright, mask work right, or other ti intellectual property right relating to any combination, machine, or process in which ti products or services are used. information published by ti regarding third ? party products or services does not constitute a license from ti to use such products or services or a warranty or endorsement thereof. use of such information may require a license from a third party under the patents or other intellectual property of the third party, or a license from ti under the patents or other intellectual property of ti. reproduction of information in ti data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. reproduction of this information with alteration is an unfair and deceptive business practice. ti is not responsible or liable for such altered documentation. resale of ti products or services with statements different from or beyond the parameters stated by ti for that product or service voids all express and any implied warranties for the associated ti product or service and is an unfair and deceptive business practice. ti is not responsible or liable for any such statements. mailing address: texas instruments post office box 655303 dallas, texas 75265 copyright ? 2002, texas instruments incorporated
product folder: lm385-1.2, micropower voltage reference home | company info | employment | ti global | contact us | site map ? advanced search product folder | product info: features | description | datasheets | pricing/availability/pkg | samples | application notes | related documents product support: applications lm385-1.2, micropower voltage reference device status: active parameter name lm385-1.2 vo (v) 1.235 vout/vref initial tol (%) 2 min iz for regulation (ua) 10 iout/iz (max) (ma) 20 temp coeff (typ) (ppm/ degree c) 20 output topology shunt features back to top l operating current range m lm285 . . . 10 ua to 20 ma m lm385 . . . 15 ua to 20 ma m lm385b ...15 ua to 20 ma l 1% and 2% initial voltage tolerance l reference impedance m lm385...1 max at 25c m all devices . . . 1.5 max over full temperature range l very low power consumption l applications m portable meter references m portable test instruments m battery-operated systems m current-loop instrumentation m panel meters l designed to be interchangeable with national lm285-1.2 and lm385-1.2 description back to top these micropower, two-terminal, band-gap voltage references operate over a 10-ua to 20-ma current range and feature exceptionally low dynamic impedance and good temperature stability. on- chip trimming provides tight voltage tolerance. the band-gap reference for these devices has low noise and long-term stability. the design makes these devices exceptionally tolerant of capacitive loading and, thus, easier to use in most reference applications. the wide dynamic operating temperature range accommodates varying current supplies, with excellent regulation. the extremely low power drain of this series makes them useful for micropower circuitry. these voltage references can be used to make portable meters, regulators, or general-purpose analog circuitry, with battery life approaching shelf life. the wide operating current range allows them to replace older references with tighter-tolerance parts. the lm285-1.2 is characterized for operation from ?40c to 85c. the lm385-1.2 and lm385b-1.2 are characterized for operation from 0c to 70c. technical documents back to top file:///h|/imaging/bitting/cpl/20020930_1/09272002_10/txii/09272002_html/lm385-1.2.html (1 of 3) [oct-03-2002 10:33:51 am]
product folder: lm385-1.2, micropower voltage reference to view the following documents, acrobat reader 4.0 is required. to download a document to your hard drive, right-click on the link and choose 'save'. datasheet back to top full datasheet in acrobat pdf: lm385-1.2.pdf (106 kb,rev.e) ( updated: 02/12/2002 ) application notes back to top l powerflex (tm) -- surface-mount alternative for through-hole power packages (szza015 - updated: 04/08/1999 ) related documents back to top l enhanced plastic portfolio brochure (sgzb004, 385 kb - updated: 08/19/2002 ) l military analog selection guide (sglb002, 318 kb - updated: 11/09/2000 ) l military semiconductors selection guide 2002 (rev. b) (sgyc003b, 1648 kb - updated: 04/22/2002 ) l standard linear products cross reference (slyt017, 586 kb - updated: 05/03/2000 ) samples back to top orderable device package industry (ti) pins temp (oc) status product content samples lm385d-1-2 sop (d) 8 0 to 70 active view product content request samples lm385lp-1-2 to/sot (lp) 3 0 to 70 active view product content request samples lm385pwr-1-2 tssop (pw) 8 0 to 70 active view product content request samples pricing/availability/pkg back to top device information orderable device status package type |pins temp (oc) product content budgetary pricing qty | $us std pack qty lm385d-1-2 active sop (d) | 8 0 to 70 view contents 1ku | 0.42 75 lm385dr-1-2 active sop (d) | 8 0 to 70 view contents 1ku | 0.42 2500 ti inventory status as of 3:00 pm gmt, 26 sep 2002 in stock in progress qty|date lead time n/a* >10k | 02 oct 8 wks 5550 | 03 oct >10k | 06 nov >10k | 14 nov n/a* 1294 | 23 sep 8 wks 1206 | 27 sep >10k | 02 oct 2500 | 03 oct 2500 | 14 oct reported distributor inventory as of 3:00 pm gmt, 26 sep 2002 distributor company|region in stock purchase avnet | america 28 file:///h|/imaging/bitting/cpl/20020930_1/09272002_10/txii/09272002_html/lm385-1.2.html (2 of 3) [oct-03-2002 10:33:51 am]
product folder: lm385-1.2, micropower voltage reference lm385lp-1-2 active to/sot (lp) | 3 0 to 70 view contents 1ku | 0.42 1000 lm385lpr-1-2 active to/sot (lp) | 3 0 to 70 view contents 1ku | 0.42 2000 lm385ps-1.2 obsolete sop (ps) | 8 0 to 70 view contents 1ku | lm385pwr-1- 2 active tssop (pw) | 8 0 to 70 view contents 1ku | 0.42 2000 n/a* 377 | 23 sep 10 wks >10k | 07 oct >10k | 13 nov >10k | 21 nov >10k | 02 dec n/a* >10k | 07 oct 10 wks >10k | 13 nov >10k | 21 nov >10k | 02 dec n/a* not available 2000 230 | 25 sep 16 wks >10k | 07 oct >10k | 14 oct >10k | 11 nov digikey | america 525 table data updated on: 9/26/2002 products | applications | support | ti&me ? copyright 1995-2002 texas instruments incorporated. all rights reserved. trademarks | privacy policy | terms of use file:///h|/imaging/bitting/cpl/20020930_1/09272002_10/txii/09272002_html/lm385-1.2.html (3 of 3) [oct-03-2002 10:33:51 am]
product folder: lm385b-1.2, micropower voltage reference home | company info | employment | ti global | contact us | site map ? advanced search product folder | product info: features | description | datasheets | pricing/availability/pkg | samples | application notes | related documents product support: applications lm385b-1.2, micropower voltage reference device status: active parameter name lm385b-1.2 vo (v) 1.235 vout/vref initial tol (%) 1 min iz for regulation (ua) 10 iout/iz (max) (ma) 20 temp coeff (typ) (ppm/ degree c) 20 output topology shunt features back to top l operating current range m lm285 . . . 10 ua to 20 ma m lm385 . . . 15 ua to 20 ma m lm385b ...15 ua to 20 ma l 1% and 2% initial voltage tolerance l reference impedance m lm385...1 max at 25c m all devices . . . 1.5 max over full temperature range l very low power consumption l applications m portable meter references m portable test instruments m battery-operated systems m current-loop instrumentation m panel meters l designed to be interchangeable with national lm285-1.2 and lm385-1.2 description back to top these micropower, two-terminal, band-gap voltage references operate over a 10-ua to 20-ma current range and feature exceptionally low dynamic impedance and good temperature stability. on- chip trimming provides tight voltage tolerance. the band-gap reference for these devices has low noise and long-term stability. the design makes these devices exceptionally tolerant of capacitive loading and, thus, easier to use in most reference applications. the wide dynamic operating temperature range accommodates varying current supplies, with excellent regulation. the extremely low power drain of this series makes them useful for micropower circuitry. these voltage references can be used to make portable meters, regulators, or general-purpose analog circuitry, with battery life approaching shelf life. the wide operating current range allows them to replace older references with tighter-tolerance parts. the lm285-1.2 is characterized for operation from ?40c to 85c. the lm385-1.2 and lm385b-1.2 are characterized for operation from 0c to 70c. technical documents back to top file:///h|/imaging/bitting/cpl/20020930_1/09272002_10/txii/09272002_html/lm385b-1.2.html (1 of 3) [oct-03-2002 10:33:56 am]
product folder: lm385b-1.2, micropower voltage reference to view the following documents, acrobat reader 4.0 is required. to download a document to your hard drive, right-click on the link and choose 'save'. datasheet back to top full datasheet in acrobat pdf: lm385b-1.2.pdf (106 kb,rev.e) ( updated: 02/12/2002 ) application notes back to top l powerflex (tm) -- surface-mount alternative for through-hole power packages (szza015 - updated: 04/08/1999 ) related documents back to top l enhanced plastic portfolio brochure (sgzb004, 385 kb - updated: 08/19/2002 ) l military analog selection guide (sglb002, 318 kb - updated: 11/09/2000 ) l military semiconductors selection guide 2002 (rev. b) (sgyc003b, 1648 kb - updated: 04/22/2002 ) samples back to top orderable device package industry (ti) pins temp (oc) status product content samples lm385bd-1-2 sop (d) 8 0 to 70 active view product content request samples lm385blp-1-2 to/sot (lp) 3 0 to 70 active view product content request samples lm385bpwr-1-2 tssop (pw) 8 0 to 70 active view product content request samples pricing/availability/pkg back to top device information orderable device status package type |pins temp (oc) product content budgetary pricing qty | $us std pack qty lm385bd-1-2 active sop (d) | 8 0 to 70 view contents 1ku | 0.56 75 lm385bdr-1- 2 active sop (d) | 8 0 to 70 view contents 1ku | 0.56 2500 ti inventory status as of 3:00 pm gmt, 26 sep 2002 in stock in progress qty|date lead time n/a* >10k | 01 oct 8 wks 1575 | 03 oct >10k | 05 nov 2925 | 06 nov >10k | 13 nov n/a* 927 | 23 sep 8 wks 6630 | 24 sep >10k | 01 oct >10k | 03 oct >10k | 05 nov reported distributor inventory as of 3:00 pm gmt, 26 sep 2002 distributor company|region in stock purchase avnet | america 20 file:///h|/imaging/bitting/cpl/20020930_1/09272002_10/txii/09272002_html/lm385b-1.2.html (2 of 3) [oct-03-2002 10:33:56 am]
product folder: lm385b-1.2, micropower voltage reference lm385blp-1-2 active to/sot (lp) | 3 0 to 70 view contents 1ku | 0.56 1000 lm385blpr-1- 2 active to/sot (lp) | 3 0 to 70 view contents 1ku | 0.56 2000 lm385bpwr-1- 2 active tssop (pw) | 8 0 to 70 view contents 1ku | 0.56 2000 n/a* >10k | 07 oct 10 wks >10k | 13 nov >10k | 21 nov >10k | 02 dec n/a* >10k | 07 oct 10 wks >10k | 13 nov >10k | 21 nov >10k | 02 dec n/a* 1971 | 25 sep 16 wks >10k | 07 oct >10k | 14 oct >10k | 11 nov avnet | america >1k table data updated on: 9/26/2002 products | applications | support | ti&me ? copyright 1995-2002 texas instruments incorporated. all rights reserved. trademarks | privacy policy | terms of use file:///h|/imaging/bitting/cpl/20020930_1/09272002_10/txii/09272002_html/lm385b-1.2.html (3 of 3) [oct-03-2002 10:33:56 am]

▲Up To Search▲

Price & Availability of LM285LPR-1-2

	To Download LM285LPR-1-2 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .