1 lt1004 micropower voltage reference guaranteed 4mv initial accuracy lt1004-1.2 guaranteed 20mv accuracy lt1004-2.5 guaranteed 10 m a operating current guaranteed temperature performance operates up to 20ma very low dynamic impedance the lt 1004 micropower voltage reference is a 2-terminal bandgap reference diode designed to providehigh accuracy and excellent temperature characteristics at very low operating currents. optimization of the key parameters in the design, processing and testing of the device results in accuracy specifications previously attain- able only with selected units. below is a distribution plot of reference voltage for a typical lot of lt1004-1.2. virtually all of the units fall well within the prescribed limits of 4mv. the lt1004 is a pin-for-pin replacement for thelm185/lm385 series of references with improved accu- racy specifications. more important, the lt1004 is an attractive device for use in systems where accuracy was previously obtained at the expense of power consump-tion and trimming. for a low drift micropower reference with guaranteedtemperature coefficient, see the lt1034 data sheet. typical distribution of reference voltage (lt1004-1.2) micropower cold junction compensation for thermocouples portable meter references portable test instruments battery-operated systems current loop instrumentation features applicatio s u typical applicatio u descriptio u r1 100k 186 3vlithium 1.8k 1004 ta01 * 5k at 25 c ? lt1004-1.2 1684 thermocouple type r1 j 233k k 299k t 300k s 2.1m * quiescent current @ 15 a ? yellow springs inst. co.part #44007 compensates within 1 c from 0 c to 60 c + + 1.23251.233 1.2335 1.234 1.2345 1.235 1.2355 1.236 1.2365 1.237 1.2375 number of parts 200180 160 140 120 100 8060 40 20 1004 ta02 1200 partst a = 25 c , ltc and lt are registered trademarks of linear technology corporation. downloaded from: http:///
2 lt1004 (note 1) reverse breakdown current ................................. 30ma forward current .................................................. 10ma storage temperature range ................ 65 c to 150 c lead temperature (soldering, 10 sec)................. 300 c absolute axi u rati gs w ww u operating temperature range lt1004m (obsolete) .................... 55 c to 125 c lt1004i ............................................. 40 c to 85 c lt1004c ................................................. 0 c to 70 c package/order i for atio uu w consult ltc marketing for parts specified with wider operating temperature ranges. order part number t jmax = 100 c, q ja = 160 c/ w t jmax = 100 c, q ja = 150 c/ w bottom view 12 h package 2-lead to-46 metal can 12 3 4 87 6 5 top view s8 package 8-lead plastic so ncnc nc gnd v out ncv out nc (do not use) bottom view z package 3-lead plastic to-92 t jmax = 150 c, q ja = 440 c/w, q jc = 80 c/w 04120425 0412i 0425i lt1004cs8-1.2lt1004cs8-2.5 lt1004is8-1.2 lt1004is8-2.5 s8 part marking lt1004mh-1.2lt1004mh-2.5 lt1004cz-1.2lt1004cz-2.5 lt1004iz-1.2 lt1004iz-2.5 order part number order part number the denotes the specifications which apply over the full operating temperature range, otherwise specifications are at t a = 25 c. (note 2) lt1004-1.2 lt1004-2.5 symbol parameter conditions min typ max min typ max units v z reverse breakdown voltage i r = 100 m a 1.231 1.235 1.239 2.480 2.500 2.520 v lt1004m: 55 c t a 125 c 1.220 1.230 1.245 2.460 2.500 2.535 v lt1004c: 0 c t a 70 c 1.225 1.235 1.245 2.470 2.500 2.530 v lt1004i: 40 c t a 85 c 1.220 1.230 1.245 2.460 2.500 2.530 v d v z average temperature coefficient i min i r 20ma (note 3) 20 20 ppm/ c d temp i min minimum operating current 81 0 1 22 0 m a d v z reverse breakdown voltage i min i r 1ma 1.0 1.0 mv d i r change with current 1.5 1.5 mv 1ma i r 20ma 10 10 mv 20 20 mv r z reverse dynamic impedance i r = 100 m a 0.2 0.6 0.2 0.6 w 1.5 1.5 w e n wide band noise (rms) i r = 100 m a, 10hz f 10khz 60 120 m v d v z long term stability i r = 100 m a, t a = 25 c 0.1 c 20 20 ppm/khr d time note 1: absolute maximum ratings are those values beyond which the life of a device may be impaired.note 2: all specifications are for t a = 25 c unless otherwise noted. note 3: selected devices with guaranteed maximum temperature coefficient are available upon request.for mil-std components, please refer to ltc 883c data sheet for test listing and parameters. electrical characteristics lt1004ch-1.2lt1004ch-2.5 obsolete package consider the so-8 or z packages for alternate source downloaded from: http:///
3 lt1004 forward current (ma) forward voltage (v) 1.20.8 0.4 0 0.01 1 10 100 1004 g11 0.1 t a = 25 c forward characteristics reverse voltage change reverse current (ma) output voltage change (mv) 1612 84 0 ? 0.01 1 10 100 1004 g02 0.1 ?5 c to 125 c reverse dynamic impedance reverse current (ma) dynamic impedance ( ) 100 10 1 0.1 0.01 1 10 100 1004 g05 0.1 ?5 c to 125 c f = 25hz frequency (hz) 10 dynamic impedance ( w ) 10k 1k 100 10 1 0.1 100k 1004 g06 100 1k 10k 1m t a = 25 c i r = 100 m a reverse dynamic impedance temperature drift reverse characteristics reverse voltage (v) 0 reverse current ( a) 100 10 1 0.1 0.4 0.8 1.0 1004 g01 0.2 0.6 1.2 1.4 ?5 c to 125 c filtered output noise noise voltage frequency (hz) 700600 500 400 300 200 100 0 10 1k 10k 100k 1004 g07 100 noise (nv/ hz) i r = 100 m a t a = 25 c frequency (hz) 100 7060 50 40 30 20 10 0 1k 10k 100k 1004 g08 i r = 100 m a noise (nv/ hz) r c 100 m a rc low pass reponse time (1.2v) temperature ( c) ?5 reverse voltage (v) 45 1.2451.240 1.235 1.230 1.225 1004 g04 35 125 ?5 525 65 85 105 time ( s) 0 voltage (v) 500 100 600 1004 g09 1.51.0 0.5 0 5v 0 36k v in v out output input typical perfor a ce characteristics uw downloaded from: http:///
4 lt1004 reverse dynamic impedance reverse dynamic impedance temperature drift filtered output noise noise voltage reponse time (2.5v) forward current (ma) forward voltage (v) 1.20.8 0.4 0 0.01 1 10 100 1004 g11 0.1 t a = 25 c forward characteristics temperature ( c) ?5 reference voltage (v) 45 2.5152.510 2.505 2.500 2.495 2.490 2.485 2.480 1004 g12 35 125 ?5 525 65 85 105 reverse current (ma) dynamic impedance ( w ) 1000 100 10 1 0.1 0.01 1 10 100 1004 g13 0.1 f = 25hz ?5 c to 125 c frequency (hz) 10 dynamic impedance ( w ) 10k 1k 100 10 1 0.1 100k 1004 g14 100 1k 10k 1m t a = 25 c i r = 100 m a frequency (hz) 14001200 1000 800600 400 200 0 10 1k 10k 100k 1004 g15 100 noise (nv/ hz) i r = 100 m a cutoff frequency (hz) 100 120100 8060 40 20 0 1k 10k 100k 1004 g16 i r = 100 m a integrated noise ( m v) r c 100 m a rc low pass reverse voltage (v) 0 reverse current ( m a) 100 10 1 0.1 0.5 1.0 1.5 2.0 1004 g10 2.5 3.0 ?5 c to 125 c reverse characteristics time ( s) voltage (v) 500 100 1004 g17 32 1 0 5v 0 24k v in v out output input typical perfor a ce characteristics uw downloaded from: http:///
5 lt1004 typical applicatio n s u micropower 5v reference v in 3 8v 1 f out in 5v 1004 ta03 lt1004-2.5 300 1%100 w 1% lt338a adj + high stability 5v regulator v in 1 f v out v out v in v 1004 ta08 lt1004-1.2 120 r1 lt338a adj + 10 f 2k + r1 v ?1v 0.015 variable output supply constant gain amplifier over temperature 200k 250k v ?v v + 3 5v input output 1004 ta07 60k 2n3904 250k lt1004-1.2 lead acid low-battery detector + lm4250 2 3 4 7 8 6 10m 12v lo = battery low 1004 ta14 lt1004-1.2 133k1% r1 ? 1% ? r1 sets trip point, 60.4k per cell for 1.8v/cell 1m batteryoutput ground referenced current source + lt1007c 2 3 6 7 4 r 2k* 15v ?v i out lt1004-1.2 1004 ta04 *may be increased for small output currents i out = 1.235 r r ? 2vi out + 10 a 1m 1% 3.01m1% + lm4250 2 3 4 8 6 7 22m v in 9v to 15v v out 5v 1004 ta13 lt1004-1.2 5.6k r lm334 150pf downloaded from: http:///
6 lt1004 typical applicatio n s u q1 q5 20pf 20pf 7.5k 500 500k 60k 300k 50k 200k 600k q3 q11 q10 q9 q14 + q8 q6 q4 q12 q13 1004-1.2 sd lt1004-1.2 q1 q5 20pf 20pf 7.5k 500 500k 60k 300k 500k 50k 200k 600k q3 q11 q10 q9 q14 + q8 q6 q4 q12 q13 1004-2.5 sd 500k sche atic diagra w sw lt1004-2.5 9v 1004 ta11 lt1004-1.2 510k 1.235v micropower reference from 9v battery vpp generator for eproms no trim required 0.05 f 12k 10k 2n3904 + lm301a 2 3 4 8 1 6 7 16.9k* out 21v 600 s rc per intel spec 1004 ta15 lt1004-1.2 1.05k* *1% metal film resistors 56k 22k ttl input 100pf 24v 24v ?v ?v 1.2v reference from 1.5v battery 1.5v* 1004 ta12 lt1004-1.2 3k 1.235v *output regulates down to 1.285v for i out = 0 2.5v reference low noise reference 5v 1004 ta10 lt1004-2.5 50k 2.500v v in 3 5v 1004 ta09 lt1004-1.2 22 50 f 100 a output + downloaded from: http:///
7 lt1004 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 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. h package 2-lead and 3-lead to-46 metal can (reference ltc dwg # 05-08-1340) s8 package 8-lead plastic small outline (narrow .150 inch) (reference ltc dwg # 05-08-1610) z package 3-lead plastic to-92 (similar to to-226) (reference ltc dwg # 05-08-1410) 0.100 (2.540) typ 45 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 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) 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 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 * ** obsolete package u package descriptio downloaded from: http:///
8 lt1004 1004fb lt/tp 0601 rev b 1.5k ? printed in usa ? linear technology corporation 1985 related parts part number description comments lt1634 micropower precision shunt reference 10 m a operating current, 10ppm/ c maximum drift, 0.05% initial accuracy lt1460s3-2.5 micropower series reference in sot-23 100 m a operating current, 20ppm/ c maximum drift, 0.2% initial accuracy lt1790 precision micropower ldo reference in sot-23 10ppm/ c max drift, 0.05% initial accuracy linear technology corporation 1630 mccarthy blvd., milpitas, ca 95035-7417 (408) 432-1900 fax: (408) 434-0507 www.linear.com 0 c to 100 c linear output thermometer + 1/2 lt1002 + 1/2 lt1002 4 3 13 r t network ysi 44201 10k 0.1% 10k 0.1% 2.7k5% lt1004-1.2 15v 10 11 6 1004 ta05 v out 0v to10v0 c to 100 c 2765 0.1% 168.3 0.1% network detail ysi 44201 brnred grn 3.2k 6250 10k 0.1% low temperature coefficient 2-terminal current source 1004 ta06 lt1004-1.2 r 5k lm334 r6.8k i out ? 1.3v r typical applicatio s u downloaded from: http:///
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