advanced monolithic systems, inc. www.advanced - monolithic.com phone (925) 443 - 0722 fax (925) 443 - 0723 advanced ams3100a - 2.5 monolithic micropower voltage reference systems features applications 12 mv ( 0.5%) max. initial tolerance (a grade) battery powe red systems operating current 20 m m a to 20ma instrumentation low voltage reference 2.50v a/d, d/a converters max. 0.5 w w dynamic impedance (a grade) temperature measurement low temperature coefficient current sources sot - 23 package av ailable notebook/personal computer 5% output voltage precission trimming monitors/ vcr/ tv low cost pagers general description the ams3100a - 2.5 are two - terminal micropower band - gap voltage reference that feature a very low dynamic impedanc e and good temperature coefficient, operating over a 20 a to 20ma current range. ams3100a - 2.5 is trimmed at wafer test level to optimize the temperature coefficient and tight output voltage tolerance. the advanced process technology used, makes the ams3100 a - 2.5 exceptionally tolerant of capacitive loading, making it easy to use in almost any reference application. the wide dynamic operating range allows its use with widely varying supplies with excellent regulation. the extremely low power drain, makes thes e reference diodes 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. further more, the wide operating current allows it to replace older references with a tight tolerance part. a third terminal allows the reference voltage to be adjusted to 5% to calibrate out system errors. the ams3100a - 2.5 is operating over a - 40 c to 85 c temperature range and is available in the space saving sot - 23 package. ordering information : tol. package type operating sot - 23 temperature range 12mv ams3100a - 2.5am - 40 c to 85 c 25mv ams3100a - 2.5bm - 40 c to 85 c 25mv ams3100a - 2.5cm - 40 c to 85 c pin connections 3l sot - 23 (m) a + 3 - 2 1 top view a = adjust pin.
advanced monolithic systems, inc. www.advanced - monolithic.com phone (925) 443 - 0722 fax (925) 443 - 0723 ams3100 - 2.5 absolute maximum ratings reverse current 30ma lead temperature forward current 10ma vapor phase (60 sec) 215 c operating temperature range - 40 c to 85 c infrared (15 sec.) 220 c storage temperature - 55 c to +150 c thermal resistance ( q ja ) 410 c/w electrical characteristics electrical characteristics at i r = 100 m a, and t a = +25c unless otherwi se specified. parameter conditions ams3100a - 2.5 min typ max ams3100b - 2.5 min typ max ams3100c - 2.5 min typ max units reverse breakdown voltage (note 3) i r - 100 a 2.488 2.500 2.512 2.475 2.500 2.525 2.450 2.500 2.550 v reverse dynamic impedance (note 3) i r - 100 a, f =20hz 0.2 0.60 1 1 w reverse breakdown voltage change with current (note 3) 10 m a i r 1ma 1ma i r 20ma 1.0 10 1.0 10 2.0 20 mv min. operating current (note 3) 12 20 25 13 20 30 13 20 30 m a m a wide band noise (note 4) i r - 100 a, 10hz f 10khz 120 120 120 m v temperature coeff. (note 5) 25 50 100 150 ppm/c long term stability (note 4) t a =25c.1c t = 1000 hr 20 20 20 ppm note 1: absolute maximum ratings indicate limits beyond which damage to the device may occur. operating ratings indicate conditions for which the device is intended to be functional, but do not guarantee specific performance limits. for g uaranteed specifications and test conditions, see the electrical characteristics . the guaranteed specifications apply only for the test conditions listed. note 2: parameters identified with boldface type apply at temperature extremes. all other numbers app ly at t a = t j = 25c. note 3: guaranteed and 100% production tested note 4: . guaranteed but not 100% production tested. these limits are not used to calculate average outgoing quality levels. note 5: the average temperature coefficient is defined as the ma ximum deviation of reference voltage at all measured temperatures between the operating t max and t min , divided by t max - t min . the measured temperatures are - 40 c, 25 c and 85 c. typical applications 2.5v reference wide supply range, adjustabl e reference *does not affect temperature coefficient 10k* trim output ams1009 v in = 5v to 35v 3.6k 10k output ams1009 +3.6v to +40v 62 w lm334 r v + v -
advanced monolithic systems, inc. www.advanced - monolithic.com phone (925) 443 - 0722 fax (925) 443 - 0723 ams3100 - 2.5 typical performance characteristics -4 4 8 16 0.1 1 10 100 reverse characteristics 0 output voltage change (mv) t a =25 c 0.1 1000 0.1 1 10 100 reverse dynamic impedance 1 100 dynamic impedance ( w ) 0.01 0 0.4 1.6 0.1 1 10 100 0.8 0.01 reverse current (ma) reverse current (ma) 0 0.5 1.0 1.5 2.0 2.5 0.1 100 10 3.0 reverse voltage (v) reverse current ( m a) 1 reverse characteristics forward characteristics forward current (ma) forward voltage (v) 10 100 1k 10k 100k 0.1 1k 10 reverse dynamic impedance 1m frequency (hz) dynamic impedance ( w ) 1 10k 100 -55 5 25 45 65 85 105 2.530 2.490 125 reference voltage (v) temperature drift 0 10 0 1.0 3.0 0 200 400 600 time ( m s) response time voltage swing (v) 2.0 ~ ~ ~ ~ 0 400 800 1200 1400 100 1k 10k 100k noise voltage 200 1000 noise (nv/ ? hz) i r = 100 m a 10 frequency (hz) 600 100 1k 10k 100k cutoff frequency (hz) integrated noise ( m v ) 0 20 40 60 80 100 120 temperature ( c) 2.510 2.470 2.460 -35 -15 i r = 100 m a t a =-40 c t a =85 c t a =85 c t a =-40 c t a =25 c t a =-40 c t a =25 c t a =85 c t a =25 c i r = 100 m a t a =-40 c t a =25 c t a =85 c i r = 100 m a 100 m a output ams3100a-2.5 output 100k input output input single pole low pass sharp cutoff filter filtered output noise 0.01 10 12 1.2 2.520 2.500 2.480 2.450
advanced monolithic systems, inc. www.advanced - monolithic.com phone (925) 443 - 0722 fax (925) 443 - 0723 ams3100 - 2.5 package dimensions inches (millimeters) unless otherwise noted. 3 lead sot - 23 plastic pa ckage (m) 0.047-0.055 (1.194-1.397) 0.015-0.017 (0.381-0.432) 0.110-0.120 (2.794-3.048) 0.083-0.098 (2.108-2.489) 0.035-0.040 (0.889-1.016) 0.070-0.080 (1.778-2.032) 0.018-0.024 (0.457-0.610) 10 nom 0.0034-0.0050 (0.086-0.127) (sot-23 ) ams drw# 051991 0.035-0.041 (0.089-1.041) 0.0005-0.0040 (0.013-0.102) 0.018-0.024 (0.457-0.610) 10 nom
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