Voltage Monitoring Products

Transcription

1 Voltge Monitoring Products Spring 2005 CONTENTS 3-Led Reset Genertor Circuits Led Reset Genertors with Mnul Reset Wtchdog Supervisory Circuits... 4 Bttery-Bckup Supervisory Circuits Super Sequencers Simple Sequencers Coming Soon: New Low Power Reset nd Wtchdog Supervisory Circuits... 8 A n l o g D e v i c e s A p p l i c t i o n s B u l l e t i n ADI Lunches Four New Wtchdog Supervisory Fmilies in SOT-23 nd SC70 Fmily Wtchdog Mnul Reset Multiple Timeouts Low Voltge Trip Points Pckges ADM6316-ADM6322 SOT-23-5 ADM823-ADM825 SOT-23-5/SC70-5 ADM6821-ADM6825 SOT-23-5 ADM8616-ADM8618 SC70-4 Visit our website for smples, dt sheets, nd dditionl product informtion. w w w. n l o g. c o m / s u p e r v i s o r y

2 2 Low Cost, Spce Efficient, 3-Led Reset Genertor Circuits Anlog Devices offers rnge of reset genertor circuits designed for use in microprocessor-bsed systems to monitor power supply voltge levels from 5 V down to 2.5 V. Their reset output signls re sserted whenever the supply voltge flls below preset threshold level. Reset remins ctive for fixed timeout period fter the supply voltge hs returned to vlid level, so tht the supply hs time to stbilize before the microprocessor strts up gin. The vrious models provide choice of ctive low or ctive high nd push-pull or open-drin output stges. ADM803 Open-Drin Reset Genertor Suitble for monitoring 2.5 V, 3 V, 3.3 V, nd 5 V power supplies 140 ms minimum reset timeout Active low open-drin reset output Low power consumption (17 A) Specified over 40 C to +125 C Avilble in 3-led SC70 pckge APPLICATIONS Microprocessor systems Computers Controllers Intelligent instruments Automotive systems Prt Number Reset Threshold Options (V) Min Timeout (ms) Reset Output Stge Pckge Cross Reference Active Low Active High ADM , 2.63, 2.93, 3.08, 4.38, Open-Drin 3-Led SC70 MAX803 ADM , 2.63, 2.93, 3.08, 4.00, 4.38, 4.63 ADM , 2.63, 2.93, 3.08, 4.00, 4.38, Push-Pull 3-Led SOT-23/SC70 MAX Push-Pull 3-Led SOT-23/SC70 MAX810 ADM , Push-Pull 3-Led SOT-23/SC70 ADM , Push-Pull 3-Led SOT-23/SC70 MXD1810 ADM , k Pull-Up 3-Led SOT-23/SC70 MXD1811 ADM , Push-Pull 3-Led SOT-23/SC70 MXD1812 ADM1813* 4.35, k Pull-Up 3-Led SOT-23/SC70 MXD1813 ADM , 2.31, 2.55, 2.88, Push-Pull 3-Led SOT-23/SC70 MXD1815 ADM , 2.31, 2.55, 2.88, k Pull-Up 3-Led SOT-23/SC70 MXD1816 ADM , 2.31, 2.55, 2.88, Push-Pull 3-Led SOT-23/SC70 MXD1817 ADM1818* 2.18, 2.31, 2.55, 2.88, k Pull-Up 3-Led SOT-23/SC70 MXD1818 ADM , 2.93, 3.08, 4.40, Push-Pull DIP/SOIC MAX709 *The ADM1813 nd ADM1818 lso feture mnul reset cpbility. Visit our website for smples, dt sheets, nd dditionl product informtion. w w w. n l o g. c o m / s u p e r v i s o r y

3 3 4-Led Reset Genertors with Mnul Reset The ADM811/ADM812, ADM6315, ADM6711/ADM6713, nd ADM6384 offer mnul reset input, llowing user to sfely reset microprocessor system by mens of n externl push-button switch. ADM6711/ADM6713 Reset Genertors with Mnul Reset in SC70 Suitble for monitoring 2.5 V, 3 V, 3.3 V, nd 5 V power supplies APPLICATIONS Personl computers Consumer electronics Microcontroller-/ microprocessor-bsed systems Hndheld GPS units Pocket PCs 140 ms minimum reset timeout Debounced mnul reset input Active low push-pull reset output (ADM6711) Active low open-drin reset output (ADM6713) Low power consumption (12 A) Specified over 40 C to +125 C Avilble in 4-led SC70 pckge ADM6384 Reset Genertor with Mnul Reset in SC70 Suitble for monitoring 3 V, 3.3 V, nd 5 V power supplies 140 ms minimum reset timeout Debounced mnul reset input Active low push-pull reset output Specified over 40 C to +125 C Avilble in 4-led SC70 pckge Prt Reset Threshold Options (V) Min Timeout Reset Output Stge Pckge Cross Number (ms) Active Low Active High Reference ADM , 4.38, 3.08, 2.93, Push-Pull 4-Led SC70 MAX6384 ADM , 2.63, 2.93, , Push-Pull 4-Led SC70 MAX6711 ADM , 2.63, 2.93, 3.08, 4.38, Open-Drin 4-Led SC70 MAX6713 ADM , 2.63, 2.93, 3.08, 4.38, Push-Pull 4-Led SOT-143 MAX812 ADM , 2.63, 2.93, 3.08, 4.38, Push-Pull 4-Led SOT-143 MAX811 ADM811-3T Push-Pull 4-Led SOT-143 ADM , 2.93, 3.08, 4.39, 4.50, Open-Drin 4-Led SOT-143 MAX6315 Visit our website for smples, dt sheets, nd dditionl product informtion. w w w. n l o g. c o m / s u p e r v i s o r y

4 4 Wtchdog Supervisory Circuits Microprocessors need to be reset when code execution errors occur, s well s when supply voltges fll to invlid levels. A wtchdog function cn detect code execution errors by monitoring frequent logic trnsitions on microprocessor s output pin. If trnsition is not detected within certin time period, the wtchdog circuit will initite reset signl tht will tke the microprocessor out of its invlid stte. Mny ADI reset genertor wtchdog circuits lso feture power fil detection comprtor tht sserts n ctive low signl when the unregulted power supply voltge flls below predetermined level. This power fil output cn be used to generte nonmskble interrupt, which llows the microprocessor to implement shutdown procedure before power is lost. ADM8616 Wtchdog Supervisory Circuits in 4-Pin SC70 Wide rnge of trip points Low voltge opertion: 1.58 V minimum Specified over 40 C to +125 C 1 ms minimum reset timeout 4 wtchdog timeout options Avilble in 4-led SC70 pckge APPLICATIONS Microprocessor systems Computers Controllers Intelligent instruments Criticl P monitoring Fmily Reset Threshold (V) Min Timeout (ms) Mnul Reset Power Fil Comprtor Pckge Cross Reference ADM6316 ADM SOT23-5 MAX6316 MAX6322 ADM823 ADM SOT23-5, SC70-5 MAX823 MAX825 ADM6821 ADM SOT23-5 MAX6821 MAX6825 ADM8616 ADM SC70-4 ADM698 ADM DIP, SOIC MAX698 MAX699 ADM705 ADM , DIP, SOIC MAX705 MAX708 ADM706P DIP, SOIC MAX706P ADM706R/ ADM706S/ADM706T, ADM708R/ ADM708S/ADM708T DIP, SOIC MAX706R/ MAX706S/MAX706T, MAX708R/ MAX708S/MAX708T ADM1232(A) DIP, SOIC, MSOP DS1232 ADM8698 ADM DIP, SOIC ADM , 60 SOIC Visit our website for smples, dt sheets, nd dditionl product informtion. w w w. n l o g. c o m / s u p e r v i s o r y

5 5 Bttery-Bckup Supervisory Circuits In some computer pplictions, it is desirble to provide bttery-bckup support for externl RAM, so tht in the event of power brownout, bttery cn supply power to the RAM unit nd dt stored by the microprocessor cn be sved. In ddition to providing precision voltge monitoring, wtchdog timing, nd power fil detection, mny of our bttery-bckup prts cn control the chip enble sttus of externl RAM blocks to prevent microprocessor from writing erroneous dt during power-up, power-down, nd brownout conditions. ADM869x: Upgrde for Industry Stndrd ADM69X Lower power consumption (140 A) Fster gting of chip enble signls (3 ns) Prt Number Reset Threshold (V) Min Timeout (ms) Reset Output Stge Active Low Active High Bttery- Bckup Switch Chip Enble Gting Wtchdog Timeout Pckge Cross Reference ADM Push-Pull 1.6 DIP/SOIC MAX690 ADM690A Push-Pull 1.6 DIP/SOIC/MSOP MAX690A ADM (djustble) Push-Pull Push-Pull 0.1 (djustble) DIP/SOIC MAX691 ADM691A (djustble) Push-Pull Open-Drin 0.1 (djustble) DIP/SOIC/TSSOP MAX691A ADM Push-Pull 1.6 DIP/SOIC MAX692 ADM692A Push-Pull 1.6 DIP/SOIC MAX692A ADM (djustble) Push-Pull Push-Pull 0.1 (djustble) DIP/SOIC MAX693 ADM693A (djustble) Push-Pull Open-Drin 0.1 (djustble) DIP/SOIC MAX693A ADM Push-Pull 1.6 DIP/SOIC MAX694 ADM (djustble) Push-Pull Push-Pull 0.1 (djustble) DIP/SOIC MAX695 ADM (djustble) 35 (djustble) Push-Pull Push-Pull 0.1 (djustble) DIP/SOIC MAX696 ADM (djustble) 35 (djustble) Push-Pull Push-Pull 0.1 (djustble) DIP/SOIC MAX697 ADM , (djustble) Push-Pull Open-Drin 0.1 (djustble) DIP/SOIC MAX800 ADM , Push-Pull 1.6 DIP/SOIC MAX802 ADM , Push-Pull 1.6 DIP/SOIC MAX805 ADM Push-Pull 1.6 DIP/SOIC ADM (djustble) Push-Pull Push-Pull 0.1 (djustble) DIP/SOIC/TSSOP ADM Push-Pull 1.6 DIP/SOIC ADM (djustble) Push-Pull Push-Pull 0.1 (djustble) DIP/SOIC/TSSOP ADM Push-Pull 1.6 DIP/SOIC ADM (djustble) Push-Pull Push-Pull 0.1 (djustble) DIP/SOIC ADM (djustble) 35 (djustble) Push-Pull Push-Pull 0.1 (djustble) DIP/SOIC/TSSOP ADM (djustble) 35 (djustble) Push-Pull Push-Pull 0.1 (djustble) DIP/SOIC/TSSOP Visit our website for smples, dt sheets, nd dditionl product informtion. w w w. n l o g. c o m / s u p e r v i s o r y

6 6 ADM1062 to ADM1069: Multisupply Super Sequencers with Mrgining Control The ADM1062 to ADM1069 fmily consists of configurble supervisory/sequencing devices tht offer single-chip solution for supply monitoring nd sequencing in multisupply systems. The ADM1062 to ADM1069 hve up to 10 progrmmble supply voltge monitor inputs. Voltges from 0.6 V to 14.4 V cn be detected directly. Five of the inputs cn lso be configured s generl-purpose logic inputs. An on-chip 12-bit ADC llows redbck of the supply voltges, offering n extr level of supply supervision. This cn be used in closedloop system with four or six on-chip DACs for supply voltge djustment nd mrgining. The ADM1062 to ADM1069 fmily hs verstile, progrmmble stte mchine sequencing engine. 512 bytes of on-chip EEPROM is vilble to store configurtion prmeters. Fetures Up to 10 supply fult detector inputs with progrmmble thresholds 1% ccurcy Up to five generl-purpose logic inputs 10 fully progrmmble output drivers Internl chrge pump for high-side drive of N-chnnel FET on six outputs Flexible, progrmmble, stte mchine-bsed sequencing engine Supply mrgining tools: 12-bit ADC monitors ll supervised voltges 6 voltge-output DACs Industry stndrd SMBus Interfce Internl nd remote temperture sensing LFCSP nd TQFP pckge options Functionl Block Digrm Super Sequencers Prt Number Supervising Accurcy Sequencing Monitor Inputs Enble Outputs Voltge Redbck nd Mrgining Temperture Sensing ADM1060 ±2.5% Combintionl Logic Led TSSOP Pckge ADM1062 ±1% Stte Mchine Bit ADC + 6 DACs ±2 C 40-Led LFCSP/48-Led TQFP ADM1063 ±1% Stte Mchine Bit ADC ±2 C ( 2) 40-Led LFCSP/48-Led TQFP ADM1064 ±1% Stte Mchine Bit ADC 40-Led LFCSP/48-Led TQFP ADM1065 ±1% Stte Mchine Led LFCSP/48-Led TQFP ADM1066 ±1% Stte Mchine Bit ADC + 6 DACs 40-Led LFCSP/48-Led TQFP ADM1067 ±1% Stte Mchine DACs 40-Led LFCSP/48-Led TQFP ADM1068 ±1% Stte Mchine Led LFCSP/32-Led TQFP ADM1069 ±1% Stte Mchine Bit ADC + 4 DACs 32-Led LFCSP/32-Led TQFP Visit our website for smples, dt sheets, nd dditionl product informtion. w w w. n w l wo w g. c on m l/ ob g u. l cl eo tm i / ns e/ qr fu -ec no cm i mn g u n i c t n s

7 7 ADM1085 to ADM1088: Simple Sequencers The ADM1085 to ADM1088 Simple Sequencers provide n esy, yet powerful nd flexible, solution to the problem of power supply sequencing. They offer progrmmble time delys from 5 s to severl seconds nd cn be cscded in vriety of wys to give sequencing of multiple power supplies. A choice of ctive-low or ctive-high outputs nd push-pull or high voltge open-drin output stges ensures comptibility with the widest possible rnge of voltge regultors nd dc-to-dc converters. The ADM1085 to ADM1088 re vilble in tiny, 6-led SC70 pckge. Fetures Provide time delys between enbling of regultors Cn be cscded with regultors for multiple supply sequencing Power supply monitoring from 0.6 V Output stges High voltge (up to 22 V) open-drin output (ADM1085/ADM1087) Push-pull outputs (ADM1086/ADM1088) Fixed (5 s typ) or cpcitor djustble time delys Enble input Low power consumption (15 A) Specified over 40 C to +125 C temperture rnge Visit our website for smples, dt sheets, nd dditionl product informtion. w w w. n w l wo w g. c on m l/ ob g u. l cl eo tm i / ns e/ qr fu -ec no cm i mn g u n i c t n s

8 Future Prts: New Low Power Reset nd Wtchdog Supervisory Circuits 3-Pin nd 4-Pin Reset Circuits ADM8609: < 1 A, 3-Pin Reset Circuit in SOT V to 3.1 V Reset Trip Points 140 ms Reset Timeout ADM6328: 1 A, 3-Pin Reset Circuit in SOT-23 nd SC V Reset Trip Point 100 ms Reset Timeout Pin Comptible with MAX6328 ADM6804: 4 A, 4-Pin Mnul Reset Circuit in SOT V Reset Trip Point 100 ms Reset Timeout Pin Comptible with MAX6804 ADM6444: 4-Pin Mnul Reset Circuit in SOT V to 4.63 V Reset Trip Points 140 ms Reset Timeout 6.72 s Mnul Reset Setup Period Pin Comptible with MAX6444 For more informtion, emil supervisory@nlog.com 5-Pin Reset Circuits ADM6306: 5-Pin Dul Mnul Reset Circuit in SOT V to 5 V V CC Trip Points 1.25 V RSTIN Trip Point 1 ms to 1120 ms Reset Timeout Options Pin Comptible with MAX6306 ADM8606: 5-Pin Dul Reset Circuit in SC V to 1.4 V V CC 1 Trip Points 1.68 V to 2.93 V V CC 2 Trip Points 1 ms to 1120 ms Reset Timeout Options 6-Pin nd 8-Pin Mnul Reset nd Wtchdog Circuits ADM8708: 6-Pin Mnul Reset Circuit in SC V to 4.63 V Trip Points 1 ms to 1120 ms Reset Timeout Options Mnul Reset nd 0.6 V Power Fil Comprtor ADM6706: 8-Pin Wtchdog Supervisory Circuit in SOT V to 4.63 V Trip Points 140 ms Reset Timeout 1.6 s Wtchdog Timeout Mnul Reset nd 0.6 V Power Fil Comprtor Worldwide Hedqurters One Technology Wy P.O. Box 9106 Norwood, MA U.S.A. Tel: , ( , U.S.A. only) Fx: Anlog Devices, Inc. Europe c/o Anlog Devices SA 17 19, rue Georges Besse Prc de Hute Technologie d Antony F Antony Cedex, Frnce Tel: Fx: Anlog Devices, Inc. Jpn Hedqurters New Pier Tkeshib South Tower Building Kign, Minto-ku, Tokyo , Jpn Tel: Fx: Anlog Devices, Inc. Southest Asi Hedqurters 39/F One Pcific Plce 88 Queenswy Admirlty, Hong Kong, PRC Tel: Fx: Anlog Devices, Inc. All rights reserved. Trdemrks nd registered trdemrks re the property of their respective owners. Printed in the U.S.A. B /05