rev. b 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 companies. 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 ? 2003 analog devices, inc. all rights reserved. adm1810?dm1813/adm1815?dm1818 microprocessor reset circuits functional block diagrams v cc tolerance bias tc reference 150ms delay v cc gnd adm1810/adm1815 rst v cc tolerance bias tc reference 150ms delay v cc gnd adm1812/adm1817 v cc tolerance bias tc reference 150ms delay v cc gnd adm1813/adm1818 rst reset monitor 5.5k v cc tolerance bias tc reference 150ms delay v cc gnd adm1811/adm1816 rst 5.5k rst features reliable low cost voltage monitor with reset output suitable for monitoring 2.5 v, 3 v, 3.3 v, and 5 v power supply voltages res et threshold levels: 4.62 v, 4.35 v, 3.06 v, 2.88 v, 2.55 v, 2.31 v, and 2.18 v (typ) active high and low push-pull output choices (adm1810, adm1812, adm1815, and adm1817) open-drain output choices (adm1811, adm1813, adm1816, and adm1818) can be used with a manual push-button to generate ar eset (adm1813, adm1818) initialize microprocessor systems with added safety available in a 3-lead sot-23 package applications microprocessor systems computers controllers intelligent instruments automotive systems general description the adm181x range of voltage monitoring circuits can be used in any application where an electronic system needs to be reset when a voltage increases above or below a predetermined value. because of the reset delay time incorporated into the adm181x series, these devices can provide a safe startup for electronic systems. before a system initializes, the power supply must stabi- lize. u sing the adm181x series ensures that there are typically 150 ms for the power supply to stabilize before the system is reset and safe system initialization begins. the adm181x series of microprocessor reset circuits are avail- able in low cost, space-saving sot-23 packages.
rev. b e2e adm1810eadm1813/adm1815eadm1818especifications (v cc = full operating range, t a = e40 c to +105 c, unless otherwise noted.) parameter min typ max unit conditions/note supply voltage 1 5.5 v t a = 0 ? ? C ? ? rst s rst s C C ? ? rst
rev. b adm1810?dm1813/adm1815?dm1818 ? pin configuration top view (not to scale) rst /rst v cc gnd adm181x 1 2 3 pin function descriptions pin mnemonic function 1 rst /rst reset output. rst /rst remains active while v cc is below the reset threshold and remains active for 150 ms (typ) after v cc rises above the reset threshold. 2v cc supply voltage being monitored. 3 gnd 0 v. ground reference for all signals. absolute maximum ratings * (t a = 25 c, unless otherwise noted.) v cc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C 0.3 v to +6.0 v input current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 ma operating temperature range . . . . . . . . . . C 40 c to +105 c ja thermal impedance, sot-23 . . . . . . . . . . . . . . . 270 c/w lead temperature (soldering, 10 sec) . . . . . . . . . . . . . 300 c vapor phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . . . 215 c infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220 c storage temperature range . . . . . . . . . . . . C 65 c to +150 c * stresses above those listed under absolute maximum ratings may cause perma- nent damage to the device. this is a stress rating only; functional operation of the device at these or any other conditions above those listed in the operational sections of this specification is not implied. exposure to absolute maximum ratings for extended periods of time may affect device reliability. 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 adm1810 C adm1813/adm1815 C adm1818 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. trip package brand model * point option info. adm1810-5art-reel 4.62 v rt-3 (sot-23) mzv ADM1810-5ART-RL7 4.62 v rt-3 (sot-23) mzv adm1810-10art-reel 4.35 v rt-3 (sot-23) mzt adm1810-10art-rl7 4.35 v rt-3 (sot-23) mzt adm1811-5art-reel 4.62 v rt-3 (sot-23) m1v adm1811-5art-rl7 4.62 v rt-3 (sot-23) m1v adm1811-10art-reel 4.35 v rt-3 (sot-23) m1t adm1811-10art-rl7 4.35 v rt-3 (sot-23) m1t adm1812-5art-reel 4.62 v rt-3 (sot-23) mtv adm1812-5art-rl7 4.62 v rt-3 (sot-23) mtv adm1812-10art-reel 4.35 v rt-3 (sot-23) mtt adm1812-10art-rl7 4.35 v rt-3 (sot-23) mtt adm1813-5art-reel 4.62 v rt-3 (sot-23) m3v adm1813-5art-rl7 4.62 v rt-3 (sot-23) m3v adm1813-10art-reel 4.35 v rt-3 (sot-23) m3t adm1813-10art-rl7 4.35 v rt-3 (sot-23) m3t adm1815-5art-reel 3.06 v rt-3 (sot-23) m5k adm1815-5art-rl7 3.06 v rt-3 (sot-23) m5k adm1815-10art-reel 2.88 v rt-3 (sot-23) m5e adm1815-10art-rl7 2.88 v rt-3 (sot-23) m5e adm1815-20art-reel 2.55 v rt-3 (sot-23) m5a adm1815-20art-rl7 2.55 v rt-3 (sot-23) m5a adm1815-r23art-reel 2.31 v rt-3 (sot-23) m5c adm1815-r23art-rl7 2.31 v rt-3 (sot-23) m5c adm1815-r22art-reel 2.18 v rt-3 (sot-23) m5b * only available in reels. trip package brand model * point option info. adm1815-r22art-rl7 2.18 v rt-3 (sot-23) m5b adm1816-5art-reel 3.06 v rt-3 (sot-23) m6k adm1816-5art-rl7 3.06 v rt-3 (sot-23) m6k adm1816-10art-reel 2.88 v rt-3 (sot-23) m6e adm1816-10art-rl7 2.88 v rt-3 (sot-23) m6e adm1816-20art-reel 2.55 v rt-3 (sot-23) m6a adm1816-20art-rl7 2.55 v rt-3 (sot-23) m6a adm1816-r23art-reel 2.31 v rt-3 (sot-23) m6c adm1816-r23art-rl7 2.31 v rt-3 (sot-23) m6c adm1816-r22art-reel 2.18 v rt-3 (sot-23) m6b adm1816-r22art-rl7 2.18 v rt-3 (sot-23) m6b adm1817-5art-reel 3.06 v rt-3 (sot-23) m7k adm1817-5art-rl7 3.06 v rt-3 (sot-23) m7k adm1817-10art-reel 2.88 v rt-3 (sot-23) m7e adm1817-10art-rl7 2.88 v rt-3 (sot-23) m7e adm1817-20art-reel 2.55 v rt-3 (sot-23) m7a adm1817-20art-rl7 2.55 v rt-3 (sot-23) m7a adm1817-r23art-reel 2.31 v rt-3 (sot-23) m7c adm1817-r23art-rl7 2.31 v rt-3 (sot-23) m7c adm1817-r22art-reel 2.18 v rt-3 (sot-23) m7b adm1817-r22art-rl7 2.18 v rt-3 (sot-23) m7b adm1818-10art-reel 2.88 v rt-3 (sot-23) m8e adm1818-10art-rl7 2.88 v rt-3 (sot-23) m8e adm1818-20art-reel 2.55 v rt-3 (sot-23) m8a adm1818-20art-rl7 2.55 v rt-3 (sot-23) m8a ordering guide
rev. b ? adm1810?dm1813/adm1815?dm1818?ypical performance characteristics temperature ? c i cc ? a 8 10 6 4 2 0 ?40 ?20 0 20 30 50 70 85 100 120 i cc @v cc = 3v i cc @v cc = 5.5v tpc 1. supply current vs. temperature temperature ? c power-down reset delay ? s 900 800 700 600 400 500 200 100 300 0 ?40 ?20 0 20 30 50 70 85 100 120 vod = 20mv vod = 125mv vod = 200mv tpc 2. power-down reset delay vs. temperature temperature ? c power-up reset timeout ? ms 380 370 360 350 330 340 310 300 320 290 ?20 ?40 0 20 30 50 70 85 100 120 tpc 3. power-up reset timeout vs. temperature temperature ? c normalized reset threshold 1.011 1.009 1.007 1.005 1.003 1.001 0.999 0.997 0.995 ?20 ?40 0 20 30 50 70 85 100 120 deviation (rise) deviation (fall) tpc 4. normalized reset threshold vs. temperature v th ? v cc ? mv max transient ? s 60 50 40 30 10 20 0 30 10 40 60 80 100 200 400 600 800 1000 tpc 5. maximum transient duration without causing a reset pulse vs. reset comparator overdrive
rev. b adm1810?dm1813/adm1815?dm1818 ? v cc v cc trip point(max) v cc trip point v cc to reset delay rst v cc trip point(min) v ol figure 1. power-down timing diagram v cc rst v cc trip point (max) v cc trip point v cc trip point (min) reset active timeout figure 2. power-up timing diagram adm1813 and adm1818 the adm1813 and adm1818 are low cost voltage monitoring devices featuring an open-drain output and optional push- but ton reset function. adm1813/ adm1818 v cc gnd rst v cc micro- processor reset figure 3. adm1813/adm1818 typical application an optional push-button reset switch can be connected between rst and ground. pressing this switch will pull the reset output low. if the push-button reset button pulls the rst output low for a period greater than 1 m s, then, when the reset button releases the rst line to float high, the rst line will stay low for a further 150 ms typical. voltage input high push-button time reset timeout voltage input low figure 4. push-button reset timing diagram the adm1818 range has 2.88 v and 2.55 v (typ) trip point options that allow the user to monitor 3.3 v and 3 v supplies. for 5 v monitoring requirements, the adm1813 range has 4.62 v and 4.35 v (typ) trip point options. adm1810, adm1812, adm1815, and adm1817 the adm1812 is a 5 v supply monitor with an active high push- pull output and trip point options of 4.62 v and 4.35 v (typ). the adm1810 is similar to the adm1812, except that the adm1810 has an active low push-pull output stage. the adm1817 is suitable for monitoring 3.3 v, 3 v, and 2.5 v supplies, with an active high push-pull output and trip-point options of 3.06 v, 2.88 v, 2.55 v, 2.31 v, and 2.18 v (typ). the adm1815 is similar to the adm1817, except that the adm1815 has an active low push-pull output stage. the adm1810/adm1812/adm1815/adm1817 can be co n nected directly to most microprocessor reset inputs without the need for external components. adm1810/ adm1812/ adm1815/ adm1817 v cc gnd rst /rst v cc micro- processor reset figure 5. adm1810/adm1812/adm1815/adm1817 typical application adm1811 and adm1816 the adm1811 is a 5 v supply monitor with an active low open- drain output and trip point options of 4.62 v and 4.35 v (typ). the adm1816 also has an active low open-drain output but is suitable for monitoring lower voltage supplies of 3.3 v, 3 v, and 2.5 v. adm1811/ adm1816 v cc gnd rst v cc micro- processor reset figure 6. adm1811/adm1816 typical application
rev. b ? adm1810?dm1813/adm1815?dm1818 outline dimensions 3-lead small outline transistor package [sot-23] (rt-3) dimensions shown in millimeters 3.04 2.90 2.80 pin 1 1.40 1.30 1.20 2.64 2.10 1.90 bsc 1 2 3 seating plane 1.12 0.89 0.10 0.01 0.50 0.30 0.69 ref 0.20 0.08 0.60 0.50 0.40 0.95 bsc compliant to jedec standards to-236ab
rev. b adm1810eadm1813/adm1815eadm1818 e7e revision history location page 2/03 data sheet changed from rev. a to rev. b. edits to features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 deleted table i . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 edits to specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 edits to absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 edits to ordering guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 added typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 edits to adm1813 and adm1818 section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 edits to adm1810, adm1812, adm1815, and adm1817 section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 edits to adm1811 and adm1816 section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 updated outline dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3/02 data sheet changed from rev. o to rev. a. addition of table i . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 edits to ordering guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 addition of new text to adm1813 and adm1818 section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
c00064e0e2/03(b) printed in u.s.a. e8e
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