1 lt1034-1.2/lt1034-2.5 1034fe features descriptio u applicatio s u micropower dual reference guaranteed 20 ppm/ c drift guaranteed 40 ppm/ c drift (so-8 package) 20 m a to 20ma operation (1.2v) dynamic impedance: 1 w 7v, 100 m a reference the lt 1034 is a micropower, precision 1.2v/2.5 refer- ence combined with a 7v auxiliary reference. the 1.2v/2.5vreference is a trimmed, thin-film, band-gap, voltage refer- ence with 1% initial tolerance and guaranteed 20ppm/ c temperature drift. operating on only 20 m a, the lt1034 offers guaranteed drift, low temperature cycling hyster-esis and good long-term stability. the low dynamic im- pedance makes the lt1034 easy to use from unregulated supplies. the 7v reference is a subsurface zener device for less demanding applications. the lt1034 reference can be used as a high performance upgrade of the lm385 or lt1004, where guaranteed temperature drift is desired. , ltc and lt are registered trademarks of linear technology corporation. portable meters precision regulators calibrators temperature drift lt1034cs8-1.2 temperature ( c) ?0 reverse voltage change (mv) 2.52.0 1.5 1.0 0.5 0 0.5 1.0 1.5 2.0 2.5 0 50 75 lt1034 ?tpc02 ?5 25 100 125 15v 7v output 1.2v or 2.5voutput 50k 7v 500k 1.225vor 2.500v lt1034 ?ta01 typical applicatio u downloaded from: http:///
2 lt1034-1.2/lt1034-2.5 1034fe operating current ................................................. 20ma forward current (note 2) ..................................... 20ma storage temperature range ................. 65 c to 150 c lead temperature (soldering, 10 sec).................. 300 c absolute m axi m u m ratings w ww u operating temperature commercial ............................................. 0 to 70 c industrial .......................................... 40 c to 85 c military (obsolete) ................. ?5 c to 125 c order part number lt1034cs8-1.2lt1034cs8-2.5 lt1034is8-1.2 lt1034is8-2.5 bottom view h package 3-lead to-46 metal can 7v 1.2v t jmax = 150 c, q ja = 440 c/ w, q jc = 80 c/ w 12 3 4 87 6 5 top view 2.5vnc 2.5v 7v ncnc nc gnd s8 package 8-lead plastic so lt1034bch-1.2lt1034bch-2.5 lt1034bmh-1.2 lt1034bmh-2.5 lt1034ch-1.2 lt1034ch-2.5 lt1034mh-1.2 lt1034mh-2.5 package/order i n for m atio n w u u order part number t jmax = 175 c, q ja = 150 c/ w t jmax = 100 c, q ja = 160 c/ w bottom view z package 3-lead to-92 plastic 7v 1.2v order part number lt1034bcz-1.2lt1034bcz-2.5 lt1034biz-1.2 lt1034biz-2.5 lt1034cz-1.2 lt1034cz-2.5 lt1034iz-1.2 lt1034iz-2.5 part marking 34013402 1034i12 34i02 (note 1) consult ltc marketing for parts specified with wider operating temperature ranges. obsolete package consider the z package for alternate source downloaded from: http:///
3 lt1034-1.2/lt1034-2.5 1034fe parameter conditions min typ max units reverse breakdown voltage i r = 100 m a 6.80 7.0 7.3 v 6.75 7.0 7.4 v reverse breakdown change 100 m a i r 1ma 90 140 mv with current 100 m a i r 1ma 100 190 mv 1ma i r 20ma 160 250 mv 1ma i r 20ma 200 350 mv temperature coefficient i r = 100 m a 40 ppm/ c long-term stability i r = 100 m a 20 ppm/ ? khrs note 1: absolute maximum ratings are those values beyond which the life of a device may be impaired.note 2: forward biasing either diode will affect the operation of the other diode. note 3: this parameter guaranteed by ?everse breakdown change with current?test.note 4: for the lt1034-1.2: 20 m a i r 2ma. for the lt1034-2.5: 30 m a i r 2ma. lt1034-1.2 lt1034-2.5 parameter conditions min typ max min typ max units reverse breakdown voltage i r = 100 m a 1.210 1.225 1.240 2.46 2.5 2.54 v 1.205 1.225 1.245 2.43 2.5 2.57 v reverse breakdown change (note 4) 0.5 2.0 1.0 3.0 mv with current 1.0 4.0 1.5 6.0 mv 2ma i r 20ma 4.0 8.0 6.0 16.0 mv 6.0 15.0 10.0 20.0 mv minimum operating current 10 20 15 30 m a temperature coefficient i r = 100 m a lt1034b 10 20 10 20 ppm/ c lt1034 20 40 20 40 ppm/ c reverse dynamic impedance (note 3) i r = 100 m a 0.25 1.0 0.5 1.5 w 0.50 2.0 1.0 2.5 w low frequency noise i r = 100 m a, 0.1hz f 10hz 46 m v p-p long-term stability i r = 100 m a 20 20 ppm/ ? khrs electrical characteristics the denotes the specifications which apply over the full operating temperature range, otherwise specifications are at t a = 25 c. the denotes the specifications which apply over the full operating temperature range, otherwise specifications are at t a = 25 c. 7v reference. downloaded from: http:///
4 lt1034-1.2/lt1034-2.5 1034fe typical perfor m a n ce characteristics u w 0.1hz to 10hz noise 1.2v reverse voltage change 7v reverse voltage change 1.2v reverse current (ma) 0 reverse voltage change (mv) 2 4 6 8 0.01 1 10 100 lt1034 ?tpc01 ? 0.1 t a = 55 c to 125 c 1.2v reverse current (ma) 0.1 0.1 reverse voltage change(v) 0.2 0.3 0.4 1 10 100 lt1034 ?tpc02 0.1 0 t a = 25 c 7v 1s/div 0 ?1 2 v/div ? ? 0 4 11 24 68 lt1034 ?tpc03 10 12 135 791 1 8 ?0 ? ? 2 10 6 reverse dynamic impedance 7v reverse dynamic impedance 2.5v reverse dynamic impedance 1.2v frequency (khz) reverse dynamic impedance ( w ) 6050 40 30 20 10 0 0.01 1 10 100 lt1034 ?tpc05 0.1 i z = 100 m a reverse current (ma) 1 reverse dynamic impedance ( ) 10 0.01 1 10 100 lt1034 ?tpc04 0.1 0.1 100 1.2v t a = 25 c f = 25hz frequency (hz) 1 reverse dynamic impedance ( ) 10 10 1k 10k 100k lt1034 ?tpc06 0.1 100 100 t a = 25 c i z = 100 a 1.2v downloaded from: http:///
5 lt1034-1.2/lt1034-2.5 1034fe typical perfor m a n ce characteristics u w reverse voltage (v) 0 reverse current ( a) 8 12 1.6 lt1034 ?tpc07 40 0.4 0.8 1.2 16 t a = 55 c to 125 c v ref = 1.2v reverse voltage (v) 0 reverse current ( a) 100 8060 40 20 0 8 lt1034 ?tpc09 2 13579 4 6 10 t a = 55 c to 125 c v ref = 7v reverse voltage (v) reverse current (ma) 100 10 1 0.1 0.01 2.490 2.500 2.505 2.510 lt1034 ?tpc02 2.495 reverse characteristics 7v reverse characteristics 2.5v reverse characteristics 1.2v response time response time forward characteristics forward current (ma) 0.01 0 forward voltage (v) 0.8 1.2 0.1 1 10 100 lt1034 ?tpc10 0.4 t a = 25 c time ( s) voltage (v) 86 4 2 0 15 0 60 lt1180a ?tpc11 0 20 40 80 output input v in v out 82k 7v time ( s) voltage (v) 1.51.0 0.5 05 0 300 lt1180a ?tpc12 0 100 200 400 output input v in v out 36k 1.2v downloaded from: http:///
6 lt1034-1.2/lt1034-2.5 1034fe u package descriptio h package 8-lead to-5 metal can (.200 inch pcd) (reference ltc dwg # 05-08-1320) s8 package 8-lead plastic small outline (narrow .150 inch) (reference ltc dwg # 05-08-1610) 0.016 ?0.050 (0.406 ?1.270) 0.010 ?0.020 (0.254 ?0.508) 45 0 ?8 typ 0.008 ?0.010 (0.203 ?0.254) so8 1298 0.053 ?0.069 (1.346 ?1.752) 0.014 ?0.019 (0.355 ?0.483) typ 0.004 ?0.010 (0.101 ?0.254) 0.050 (1.270) bsc 1 2 3 4 0.150 ?0.157** (3.810 ?3.988) 8 7 6 5 0.189 ?0.197* (4.801 ?5.004) 0.228 ?0.244 (5.791 ?6.197) dimension does not include mold flash. mold flash shall not exceed 0.006" (0.152mm) per side dimension does not include interlead flash. interlead flash shall not exceed 0.010" (0.254mm) per side * ** 45 0.016 ?0.021** (0.406 ?0.533) dia 0.025 (0.635) max 0.085 ?0.105 (2.159 ?2.667) 0.500 (12.700) min 0.178 ?0.195 (4.521 ?4.953) 0.209 ?0.219 (5.309 ?5.537) 0.100 (2.540) typ h02/03(to-46) 1098 0.050 (1.270) typ 0.050 (1.270) typ 0.028 ?0.048 (0.711 ?1.219) 0.036 ?0.046 (0.914 ?1.168) for 3-lead package only reference plane * lead diameter is uncontrolled between the reference plane and 0.045" below the reference plane for solder dip lead finish, lead diameter is 0.016 ?0.024 (0.406 ?0.610) * ** pin 1 obsolete package downloaded from: http:///
7 lt1034-1.2/lt1034-2.5 1034fe information furnished by linear technology corporation is believed to be accurate and reliable. however, no responsibility is assumed for its use. linear technology corporation makes no represen-tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. u package descriptio z package 3-lead plastic to-92 (similar to to-226) (reference ltc dwg # 05-08-1410) 0.050 (1.27) bsc 0.060 0.005 (1.524 0.127) dia 0.90 (2.286) nom 0.180 0.005 (4.572 0.127) 0.180 0.005 (4.572 0.127) 0.500 (12.70) min 0.050 (1.270) max uncontrolledlead dimension 0.016 0.003 (0.406 0.076) 5 nom 0.015 0.002 (0.381 0.051) 0.060 0.010 (1.524 0.254) 10 nom 0.140 0.010 (3.556 0.127) z3 (to-92) 0401 0.098 +016/ 0.04 (2.5 +0.4/ 0.1) 2 plcs to-92 tape and reel refer to tape and reel section of ltc data book for additional information downloaded from: http:///
8 lt1034-1.2/lt1034-2.5 1034fe lt/cpi 0102 1.5k rev e ? printed in usa linear technology corporation 1630 mccarthy blvd., milpitas, ca 95035-7417 (408) 432-1900 fax: (408) 434-0507 www.linear.com ? linear technology corporation 1995 related parts part number description comments lt1004 low cost precision band-gap micropower, so-8, industrial temperature options lt1019 precision series or shunt band-gap low dropout, multiple output options lt1236 precision series or shunt buried zener low noise, low power, multiple output options downloaded from: http:///
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