Analog Integrations Corporation 4F, 9 Industry E. 9th Rd, Science-Based Industrial Park, Hsinchu, Taiwan DS-385B

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1 Adjustabl Micropowr Voltag Rfrnc FEATURES Adjustabl from.v to.v. Oprating urrnt from µa to ma. Low Tmpratur officint. % and % Initial Tolranc. Low Dynamic Impdanc. APPLIATIONS Portabl, BattryPowrd Equipmnt. Instrumntation. Procss ontrol. Enrgy Managmnt. Product Tsting. Automotiv. Prcision Audio omponnts. TYPIAL APPLIATION IRUIT V IN R S LM8 I R.V DESRIPTION Th LM8 is micropowr trminal adjustabl bandgap voltag rfrnc. Oprating from.v to.v and ovr µa to ma currnt rang. Thy fatur xcptionally low dynamic impdanc and good tmpratur stability. Onchip trimming is usd to achiv tight voltag tolranc. Sinc th LM8 bandgap rfrnc uss only transistors and rsistors, low nois and good longtrm stability rsult. arful dsign of th LM8 has mad th dvic tolrant of capacitiv loading, making it asy to us in almost any rfrnc application. Th wid dynamic oprating rang allows its us with widly varying supplis with xcllnt rgulation. Th xtrmly low powr drain of th LM8 maks it usful for micropowr circuitry. This voltag rfrnc can b usd to mak portabl mtrs, rgulators or gnral purpos analog circuitry with battry lif approaching shlf lif. Furthr, th wid oprating currnt allows it to rplac oldr rfrncs with a tightr tolranc part. Prcision.V Voltag Rfrnc Analog Intgrations orporation F, 9 Industry E. 9th Rd, ScincBasd Industrial Park, Hsinchu, Taiwan DS8B TEL: FAX:

2 ORDERING INFORMATION LM8XXXX PIN ONFIGURATION PAKING TYPE BG: BAG TR: TAPE & REEL TB: TUBE (for SO8) PAKAGE TYPE X: SOT89 Z: TO9 S: SMALL OUTLINE TOLERAE Dfault: % B: % SOT89 TOP VIEW : : : TO9 TOP VIEW : : : Exampl: LM8XTR % vrsion, in SOT89 Packag & Taping & Rl Packing Typ (S is not availabl in BAG packing typ.) SO8 TOP VIEW ABSOLUTE MAXIMUM RATINGS Rvrs urrnt ma Forward urrnt ma Oprating Tmpratur Rang to 7 Storag Tmpratur to Lad Tmpratur TO9 Packag Soldring ( sconds) SO Packag Vapor phas (6 sconds) TEST IRUIT Rfr to TYPIAL APPLIATION IRUIT.

3 ELETRIAL HARATERISTIS (T A =, unlss othrwis spcifid.) PARAMETER TEST ONDITIONS SYMBOL MIN. TYP. MAX. UNIT Rvrs Voltag I R =µa LM8B LM8 V R V Rvrs Voltag hang with urrnt Minimum Oprating urrnt Dynamic Output Impdanc Rfrnc Voltag hang with Output Voltag I RMIN I R ma ma I R ma V OUT =.V V OUT =.V I R =µa, f=hz I A =.I R, V OUT =.V, V OUT =.V V R. I RMIN 7 Z R. I R =µa mv mv µa Ω Fdback urrnt I 8 na Output Widband Nois Avrag Tmpratur officint (Not) Long Trm Stability Not : I R =µa, Hz<f<KHz V OUT =.V, V OUT =.V N 7 µv RMS I R =µa αv R ppm/ I R =µa, T=Hrs, T A = ±. V R / t ppm Th avrag tmpratur cofficint is dfind as th maximum dviation of rvrs voltag at all masurd tmpraturs from T MIN to T MAX, dividd by T MAX T MIN. Th masurd tmpraturs ar,, and 7. TYPIAL PERFORMAE HARATERISTIS. Forward Voltag (V) TA= TA= TA= Rvrs urrnt (µa) TA= TA= TA=.. Forward urrnt (ma) Fig. Forward charactristics Rvrs Voltag (V) Fig. Rvrs haractristics

4 TYPIAL PERFORMAE HARATERISTIS (ontinud).7 Rfrnc voltag (V).. I R=µA Output Voltag hang (mv) TA= TA= TA= 8. Tmpratur ( ) Fig. Tmpratur Drift of Rprsntativ Units.. Rvrs urrnt (ma) Fig. Rvrs haractristics 8 IR=µA Minimum urrnt (µa) 6 Fdback urrnt (na) 8 6 VOUT=VREF VOUT=.V 6 Output Voltag (V) Fig. Minimum Oprating urrnt 6 8 Tmpratur ( ) Fig. 6 Fdback urrnt K V OUT=.V IR=µA Voltag (V) Output Input K V OUT K 6K Nois K V OUT= VREF Input Tim (µs) Fig. 7 Rspons Tim K K K Frquncy (Hz) Fig. 8 Output Nois Voltag ( nv / Hz )

5 BLOK DIAGRAM. SYMBOL 7µA PIN DESRIPTIONS PIN sinks currnt with a rang from µa to ma for normal applications. And a stabl positiv voltag, rlativ to Pin, occurs on Pin. PIN Pin sourcs currnt for normal application. Th currnt valu is th sam as Pin. PIN Not connctd. APPLIATION EXAMPLES VIN VIN R µa<i<ma R µa<i<ma N9 LM8 R K R K R K V OUT.V LM8 N R K R.M V OUT V Fig. 9 ma Shunt Rgulator Fig. V Low urrnt Shunt Rgulator R K V IN R N9 N96 µa<i OUT<mA I OUT=.V/R Fig. urrnt Sourc V D R R K R M <V LED ON Fig. Voltag Lvl Dtctor

6 APPLIATION EXAMPLES (ontinud) D R K V R R M >V LED ON Fig. Voltag Lvl Dtctor PHYSIAL DIMENSIONS SOT89 (unit: mm) D D A SYMBOL MIN MAX A..6 B H E D..6 D.6.8 L B E.9.6. (TYP.). (TYP.) H.9. L.89. SOT89 Marking Part No. LM8X LM8BX Marking AI AIB 6

7 TO9 (unit: mm) A L E SYMBOL MIN MAX A...8 (TYP.) D D.. E.7..7 (TYP.) L.7 8 LEAD PLASTI SO (unit: mm) D SYMBOL MIN MAX A..7 E H A.. B...9. D.8. A A E.8..7(TYP) H.8 6. L..7 B L 7