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rev. d information furnished by analog devices is believed to be accurate and reliable. however, no responsibility is assumed by analog devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. no license is granted by implication or otherwise under any patent or patent rights of analog devices. trademarks and registered trademarks are the property of their respective owners. one technology way, p.o. box 9106, norwood, ma 02062-9106, u.s.a. tel: 781/329-4700 www.analog.com fax: 781/326-8703 ? 2004 analog devices, inc. all rights reserved. ref43 +2.5 v low power precision voltage reference features pin configuration general description the ref43 is a low power precision reference providing a stable 2.5 v output independent of variations in supply voltage, load conditions or ambient temperature. it is suitable as a refer ence level for 8-, 10- and 12-bit data acquisition systems, or wherever a stable, known voltage is required. simplified schematic ordering guide number of initial temperature package package part per temperature model accuracy coefficient description option reel/tray range ref43fz 0.06% 10ppm/ c 8-pin hermetic dip q-8 48 ?0 c to +85 c ref43gz 0.10% 25ppm/ c 8-pin hermetic dip q-8 48 ?0 c to +85 c ref43gp 0.10% 25ppm/ c 8-pin plastic dip n-8 50 ?0 c to +85 c ref43gs 0.10% 25ppm/ c 8-pin soic r-8 98 ?0 c to +85 c ref43gs-reel 0.10% 25ppm/ c 8-pin soic r-8 2,500 ?0 c to +85 c REF43GS-REEL7 0.10% 25ppm/ c 8-pin soic r-8 1,000 ?0 c to +85 c ref43gsz * 0.10% 25ppm/ c 8-pin soic r-8 98 ?0 c to +85 c ref43gsz-reel7 * 0.10% 25ppm/ c 8-pin soic r-8 1,000 ?0 c to +85 c ref43nbc 0.20% die 221 * z = pb-free part. tight output tolerances and low thermal drift are assured by zener-zap trimming of both output voltage and its temperature coefficient. a unique curvature correction circuit reduces the thermal curvature which is characteristic of many previous bandgap references. temp v in v out trim ground
rev. d e2e ref43 caution esd (electrostatic discharge) sensitive device. electrostatic charges as high as 4000 v readily accumulate on the human body and test equipment and can discharge without detection. although the ref43 features proprietary esd protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. therefore, proper esd precautions are recommended to avoid performance degradation or loss of functionality.
rev. d e3e
rev. d e4e ref43 dice characteristics die size 0.085 0.062 inch, 5270 sq. mils (2.16 1.57 mm, 3.39 sq. mm) 2. 3. 4a. 4b. 5. 6a. 6b. * pa ds 4a and 4b must both be bonded to ground. vout force and sense are typically bonded together at the load. vin temperature out ground * ground * trim vout fo2. vin vout sense
rev. d ref43 e5e t ypical performance characteristicse
rev. d e6e ref43
rev. d ref43 e7e
rev. d e8e ref43 * op amp is op43 if higher speed and faster setting is required. op97 if lower speed and higher linearity is required.
rev. d ref43 e9e
rev. d e10e ref43
rev. d ref43 e11e
rev. d c00374e0e8/04(d) e12e ref43 revision history location page 8/04?data sheet changed from rev. c to rev. d. edits to features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 changes to pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 changes to ordering guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 changes to absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 changes to package type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 changes to electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 delected package type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 8-lead plastic dual in-line package [pdip] (n-8) p-suffix dimensions shown in inches and (millimeters) seating plane 0.180 (4.57) max 0.150 (3.81) 0.130 (3.30) 0.110 (2.79) 0.060 (1.52) 0.050 (1.27) 0.045 (1.14) 8 1 4 5 0.295 (7.49) 0.285 (7.24) 0.275 (6.98) 0.100 (2.54) bsc 0.375 (9.53) 0.365 (9.27) 0.355 (9.02) 0.150 (3.81) 0.135 (3.43) 0.120 (3.05) 0.015 (0.38) 0.010 (0.25) 0.008 (0.20) 0.325 (8.26) 0.310 (7.87) 0.300 (7.62) 0.022 (0.56) 0.018 (0.46) 0.014 (0.36) controlling dimensions are in inches; millimeter dimensions (in parentheses) are rounded-off inch equivalents for reference only and are not appropriate for use in design compliant to jedec standards mo-095aa 0.015 (0.38) min outline dimensions 8-lead standard small outline package [soic] (r-8) s-suffix dimensions shown in millimeters and (inches) 0.25 (0.0098) 0.17 (0.0067) 1.27 (0.0500) 0.40 (0.0157) 0.50 (0.0196) 0.25 (0.0099) 45 8 0 1.75 (0.0688) 1.35 (0.0532) seating plane 0.25 (0.0098) 0.10 (0.0040) 85 4 1 5.00 (0.1968) 4.80 (0.1890) 4.00 (0.1574) 3.80 (0.1497) 1.27 (0.0500) bsc 6.20 (0.2440) 5.80 (0.2284) 0.51 (0.0201) 0.31 (0.0122) coplanarity 0.10 controlling dimensions are in millimeters; inch dimensions (in parentheses) are rounded-off millimeter equivalents for reference only and are not appropriate for use in design compliant to jedec standards ms-012aa 8-lead ceramic dual in-line package [cerdip] (q-8) z-suffix dimensions shown in inches and (millimeters) 1 4 85 0.310 (7.87) 0.220 (5.59) pin 1 0.005 (0.13) min 0.055 (1.40) max 0.100 (2.54) bsc 15 0 0.320 (8.13) 0.290 (7.37) 0.015 (0.38) 0.008 (0.20) seating plane 0.200 (5.08) max 0.405 (10.29) max 0.150 (3.81) min 0.200 (5.08) 0.125 (3.18) 0.023 (0.58) 0.014 (0.36) 0.070 (1.78) 0.030 (0.76) 0.060 (1.52) 0.015 (0.38) controlling dimensions are in inches; millimeter dimensions (in parentheses) are rounded-off inch equivalents for reference only and are not appropriate for use in design

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