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microprocessor supervisory circuit in 4-lead sc70 data sheet adm6711/adm6713 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. specifications subject to change without notice. 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: 781.461.3113 ?2006C2011 analog devices, inc. all rights reserved. features specified over temperature low power consumption (12 a) precision monitoring of 2.5 v, 3 v, 3.3 v, and 5 v power supply voltages reset timeout period of 140 ms (minimum) manual reset input output stages push-pull reset output (adm6711) open-drain reset output (adm6713) reset assertion down to 1 v v cc power supply glitch immunity 4-lead sc70 package applications microprocessor systems computers controllers intelligent instruments automotive systems functional block diagrams adm6711 v cc gnd reset reset generator 240ms debounce mr v ref 0 3754-011 figure 1. 03754-001 adm6713 v cc gnd reset debounce mr v ref reset generator 240ms figure 2. general description the adm6711 / adm6713 are reset generator circuits suitable for use in microprocessor-based systems. they provide a reset signal on power-up, power-down, and whenever the supply voltage falls below a preset threshold. in addition, both parts have a debounced manual reset input so that a reset signal can also be initiated with an external switch or logic signal. with six different reset threshold options available ranging from 2.32 v to 4.63 v, the adm6711 / adm6713 are suitable for monitoring 2.5 v, 3 v, 3.3 v, and 5 v supplies. a reset timeout of at least 140 ms occurs when v cc rises above the threshold. this gives the supply voltage time to stabilize before the microprocessor starts up. the adm6711 has a push-pull output, so no additional external components are needed. the adm6713 open-drain output requires an external pull-up resistor that can be connected to a voltage higher than v cc , if desired. the parts are highly reliable with accurate voltage references and immunity to fast, negative-going transients on v cc . low current consumption and space-efficient, 4-lead sc70 packaging make the adm6711 / adm6713 ideal for use in low power portable applications. reset reset mr gnd gnd adm6711/ adm6713 *adm6713 only v cc v cc microprocessor system *r pull-up 03754-002 figure 3. typical operating circuit
adm6711/adm6713 data sheet rev. b | page 2 of 12 table of contents features .............................................................................................. 1 ? applications....................................................................................... 1 ? functional block diagrams............................................................. 1 ? general description ......................................................................... 1 ? revision history ............................................................................... 2 ? specifications..................................................................................... 3 ? absolute maximum ratings............................................................ 5 ? esd caution.................................................................................. 5 ? pin configuration and function descriptions............................. 6 ? typical performance characteristics ..............................................7 ? circuit description............................................................................8 ? manual reset input .......................................................................8 ? power supply glitch immunity ...................................................8 ? adm6713 reset output logic levels .....................................8 ? ensuring a valid reset output down to v cc = 0 v ............8 ? outline dimensions ..........................................................................9 ? ordering guide .............................................................................9 ? revision history 9/11rev. a to rev. b changes to input threshold parameter, table 1 .......................... 4 updated outline dimensions ......................................................... 9 12/06rev. 0 to rev. a updated format..................................................................universal changes to specifications table...................................................... 3 changes to figure 10........................................................................ 8 changes to ordering guide ............................................................ 9 8/03revision 0: initial version
data sheet adm6711/adm6713 rev. b | page 3 of 12 specifications v cc = full operating range; t a = t min to t max ; v cc typ = 5 v for l/m models, 3.3 v for t/s mode ls, 3 v for r models, and 2.5 v for z models, unless otherwise noted. table 1. parameter min typ max unit test conditions/comments supply v cc operating voltage range 1.0 5.5 v t a = 0c to 70c 1.2 5.5 v t a = ?40c to +125c supply current 16 35 a v cc < 5.5 v, adm671_l/m, t a = ?40c to +85c 12 30 a v cc < 3.6 v, adm671_r/s/t/z, t a = ?40c to +85c 60 a v cc < 5.5 v, adm671_l/m, t a = 85c to 125c 60 a v cc < 3.6 v, adm671_r/s/t/z, t a = 85c to 125c reset voltage threshold adm671_l 4.56 4.63 4.70 v t a = 25c 4.50 4.75 v t a = ?40c to +85c 4.44 4.82 v t a = 85c to 125c adm671_m 4.31 4.38 4.45 v t a = 25c 4.25 4.50 v t a = ?40c to +85c 4.20 4.56 v t a = 85c to 125c adm671_t 3.04 3.08 3.11 v t a = 25c 3.00 3.15 v t a = ?40c to +85c 2.95 3.21 v t a = 85c to 125c adm671_s 2.89 2.93 2.96 v t a = 25c 2.85 3.00 v t a = ?40c to +85c 2.81 3.05 v t a = 85c to 125c adm671_r 2.59 2.63 2.66 v t a = 25c 2.55 2.70 v t a = ?40c to +85c 2.52 2.74 v t a = 85c to 125c adm671_z 2.28 2.32 2.35 v t a = 25c 2.25 2.38 v t a = ?40c to +85c 2.22 2.42 v t a = 85c to 125c reset threshold temperature coefficient 30 ppm/c v cc to reset delay 20 s v cc = v th to (v th ? 100 mv) reset active timeout period 140 240 460 ms t a = ?40c to +85c 100 640 ms t a = 85c to 125c reset output voltage low (adm6711/adm6713) 0.3 v v cc = v th min, i sink = 1.2 ma, adm671_r/s/t/z 0.4 v v cc = v th min, i sink = 3.2 ma, adm671_l/m 0.3 v v cc >1.0 v, i sink = 50 a high (adm6711) 0.8 v cc v v cc > v th max, i source = 500 a, adm6711r/s/t/z 0.8 v cc v v cc > v th max, i source = 800 a, adm6711l/m
adm6711/adm6713 data sheet rev. b | page 4 of 12 parameter min typ max unit test conditions/comments reset open-drain output leakage current 1 a v cc > v th , reset deasserted manual reset ( mr ) input threshold 0.3 v cc v v il 0.7 v cc v v ih pull-up resistance 10 20 k minimum pulse width 1 s glitch immunity 100 ns reset delay 200 ns
data sheet adm6711/adm6713 rev. b | page 5 of 12 absolute maximum ratings t a = 25c, unless otherwise noted. table 3. reset threshold options table 2. parameter rating v cc ?0.3 v to +6 v reset (push-pull) ?0.3 v to (v cc + 0.3 v) reset (open-drain) ?0.3 v to +6 v mr ?0.3 v to (v cc + 0.3 v) input current v cc , mr 20 ma output current reset 20 ma rate of rise, v cc 100 v/s ja thermal impedance, sc70 146c/w operating temperature range ?40c to +125c storage temperature range ?65c to +150c lead temperature (soldering, 10 sec) 300c model reset threshold (v) adm671_l 4.63 adm671_m 4.38 adm671_t 3.08 adm671_s 2.93 adm671_r 2.63 adm671_z 2.32 esd caution stresses above those listed under absolute maximum ratings may cause permanent damage to the device. this is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability.
adm6711/adm6713 data sheet rev. b | page 6 of 12 pin configuration and fu nction descriptions gnd 1 reset 2 v cc 4 mr 3 adm6711/ adm6713 top view (not to scale) 03754-003 figure 4. pin configuration table 4. pin function descriptions pin o. neonic description 1 gnd ground reference for all signals (0 v). 2 reset active low logic input. reset remains low while v cc is below the reset threshold and remains low for 240 ms (typical) after v cc rises above the reset threshold. 3 mr manual reset. this active low debounced input ignore s input pulses of 100 ns (typical) and is guaranteed to accept input pulses greater than 1 s. leave floating when not used. 4 v cc supply voltage being monitored.
data sheet adm6711/adm6713 rev. b | page 7 of 12 typical performance characteristics i dd @ v cc = 1v i dd @ v cc = 3v i dd @ v cc = 5.5v 12 10 8 6 4 0 2 ?40 ?20 0 20 5030 70 85 100 120 03754-004 i dd (a) temperature (c) 1.007 1.006 1.005 1.004 1.003 1.002 1.001 1.000 0.999 0.998 0.997 0.996 0.995 03754-008 ?20 0 20 5030 70 85 100 120 normalized reset threshold temperature (c) ?40 figure 8. reset threshold deviation vs. temperature figure 5. supply current vs. temperature 1000 900 800 700 600 500 400 300 200 100 0 03754-005 ?40 ?20 0 20 5030 70 85 100 120 power-down reset delay (s) temperature (c) v od = 200mv v od = 125mv v od = 20mv 400 350 0 300 250 50 200 150 100 03754-009 10 100 1000 maximum transient duration (s) reset comparator overdrive, v th ? v cc (mv) 0 adm671_l/m adm671_r/s/t/z figure 6. power-down reset delay vs. temperature: adm671_r/ adm671_s/adm671_t/adm671_z figure 9. maximum transient duration (without causing a reset pulse) vs. reset comparator overdrive 900 800 700 600 500 400 300 200 100 0 03754-006 ?20 0 20 5030 70 85 100 120 power-down reset delay (s) temperature (c) ?40 v od = 200mv v od = 125mv v od = 20mv figure 7. power-down reset delay vs. temperature: adm671_l/ adm671_m
adm6711/adm6713 data sheet rev. b | page 8 of 12 circuit description the adm6711 / adm6713 are designed to protect the integrity of a systems operation by ensuring the proper operation of the system during power-up, power-down, and brownout conditions. when the adm6711 / adm6713 are powered up, the reset output remains low for a period equal to the typical reset active timeout period. this is designed to give the system time to power up correctly and for the power supply to stabilize before any devices are brought out of reset and allowed to begin executing instructions. initializing a system in this way provides a more reliable startup for microprocessor systems. manual reset input the adm6711 / adm6713 manual reset ( mr ) input allows the system operator to reset a system by means of an external manual switch. alternatively, a logic signal from another digital circuit can be used to trigger a reset via the mr input. the mr input ignores negative-going pulses faster than 100 ns (typical) and is guaranteed to accept any negative-going input pulse of a duration greater than or equal to 1 s. the reset output remains low while mr is held low and for 240 ms (typical) after mr returns high. if mr is connected to long cables or is used in a noisy environment, then placing a 0.1 f capacitor between the mr input and ground helps to remove any fast, negative-going transients. power supply glitch immunity the adm6711 / adm6713 contain internal filtering circuitry that provides immunity to fast transient glitches on the power supply line. figure 9 illustrates glitch immunity performance by showing the maximum transient duration without causing a reset pulse for glitches with amplitudes in the range of 1 mv to 1000 mv. glitch immunity makes the adm6711 / adm6713 suitable for use in noisy environments. mounting a 0.1 f decoupling capacitor as close as possible to the v cc pin improves glitch immunity further. adm6713 reset output logic levels the adm6713 open-drain reset output is designed for use with an external pull-up resistor. this resistor can be tied to v cc or any other reasonable voltage level, offering the flexibility to use the to drive a variety of different logic level circuitry. adm6713 ensuring a valid reset output down to v cc = 0 v when v cc falls below 0.8 v, the adm6711 / adm6713 reset output no longer sinks current, and a high impedance cmos logic input connected to reset may drift to undetermined logic levels. to eliminate this problem, a pull-down resistor is connected from reset to ground. a 100 k resistor is large enough not to load reset and small enough to pull reset to ground. reset gnd adm6711 100k? 03754-010 v cc v cc adm6711 v cc gnd reset reset generator 240ms debounce mr v ref 0 3754-011 figure 10. ensuring a valid reset output down to v cc = 0 v
data sheet adm6711/adm6713 rev. b | page 9 of 12 outline dimensions * package outline corresponds in full to eiaj sc82 except for width of pin 2 as shown. 072809-a * 0.70 0.50 0.10 max 1.00 0.80 1.10 0.80 0.40 0.10 0.18 0.10 0.30 0.10 2 1 3 4 0.50 bsc 0.65 bsc 2.20 1.80 2.40 1.80 1.35 1.15 c oplanarity 0.10 seating plane 0.30 0.15 figure 11. 4-lead thin shrink small outline transistor package [sc70] (ks-4) dimensions shown in millimeters ordering guide model 1 reset threshold (v) temperature range package description package option ordering quantity (k) branding adm6711laks-reel 4.63 ?40c to +125c 4-lead sc70 ks-4 10 m0b adm6711laksz-reel 4.63 ?40c to +125c 4-lead sc70 ks-4 10 m4u adm6711laksz-reel7 4.63 ?40c to +125c 4-lead sc70 ks-4 3 m4u adm6711maks-reel 4.38 ?40c to +125c 4-lead sc70 ks-4 10 m0c adm6711maks-reel7 4.38 ?40c to +125c 4-lead sc70 ks-4 3 m0c adm6711maksz-reel7 4.38 ?40c to +125c 4-lead sc70 ks-4 3 m86 adm6711taks-reel 3.08 ?40c to +125c 4-lead sc70 ks-4 10 m0d adm6711taksz-reel 3.08 ?40c to +125c 4-lead sc70 ks-4 10 m4a adm6711taks-reel7 3.08 ?40c to +125c 4-lead sc70 ks-4 3 m0d adm6711taksz-reel7 3.08 ?40c to +125c 4-lead sc70 ks-4 3 m4a adm6711saks-reel 2.93 ?40c to +125c 4-lead sc70 ks-4 10 m0e adm6711saksz-reel 2.93 ?40c to +125c 4-lead sc70 ks-4 10 m4b adm6711saks-reel7 2.93 ?40c to +125c 4-lead sc70 ks-4 3 m0e adm6711saksz-reel7 2.93 ?40c to +125c 4-lead sc70 ks-4 3 m4b adm6711raks-reel 2.63 ?40c to +125c 4-lead sc70 ks-4 10 m0f adm6711raksz-reel 2.63 ?40c to +125c 4-lead sc70 ks-4 10 m5f adm6711raks-reel7 2.63 ?40c to +125c 4-lead sc70 ks-4 3 m0f adm6711raksz-reel7 2.63 ?40c to +125c 4-lead sc70 ks-4 3 m5f adm6711zaks-reel 2.32 ?40c to +125c 4-lead sc70 ks-4 10 m0g adm6711zaksz-reel 2.32 ?40c to +125c 4-lead sc70 ks-4 10 m4h adm6711zaks-reel7 2.32 ?40c to +125c 4-lead sc70 ks-4 3 m0g adm6711zaksz-reel7 2.32 ?40c to +125c 4-lead sc70 ks-4 3 m4h adm6713laks-reel 4.63 ?40c to +125c 4-lead sc70 ks-4 10 m0h adm6713laksz-reel 4.63 ?40c to +125c 4-lead sc70 ks-4 10 m87 ADM6713LAKSZ-REEL7 4.63 ?40c to +125c 4-lead sc70 ks-4 3 m87 adm6713maks-reel 4.38 ?40c to +125c 4-lead sc70 ks-4 10 m0j adm6713maks-reel7 4.38 ?40c to +125c 4-lead sc70 ks-4 3 m0j adm6713maksz-reel7 4.38 ?40c to +125c 4-lead sc70 ks-4 3 m88 adm6713taks-reel 3.08 ?40c to +125c 4-lead sc70 ks-4 10 m0k
adm6711/adm6713 data sheet rev. b | page 10 of 12 model 1 reset threshold (v) temperature range package description package option ordering quantity (k) branding adm6713taks-reel7 3.08 ?40c to +125c 4-lead sc70 ks-4 3 m0k adm6713taksz-reel7 3.08 ?40c to +125c 4-lead sc70 ks-4 3 m89 adm6713saks-reel 2.93 ?40c to +125c 4-lead sc70 ks-4 10 m0l adm6713saksz-reel 2.93 ?40c to +125c 4-lead sc70 ks-4 10 m57 adm6713saks-reel7 2.93 ?40c to +125c 4-lead sc70 ks-4 3 m0l adm6713saksz-reel7 2.93 ?40c to +125c 4-lead sc70 ks-4 3 m57 adm6713raks-reel 2.63 ?40c to +125c 4-lead sc70 ks-4 10 m0m adm6713raksz-reel 2.63 ?40c to +125c 4-lead sc70 ks-4 10 m4s adm6713raks-reel7 2.63 ?40c to +125c 4-lead sc70 ks-4 3 m0m adm6713raksz-reel7 2.63 ?40c to +125c 4-lead sc70 ks-4 3 m4s adm6713zaks-reel 2.32 ?40c to +125c 4-lead sc70 ks-4 10 m0n adm6713zaksz-reel 2.32 ?40c to +125c 4-lead sc70 ks-4 10 m4r adm6713zaks-reel7 2.32 ?40c to +125c 4-lead sc70 ks-4 3 m0n adm6713zaksz-reel7 2.32 ?40c to +125c 4-lead sc70 ks-4 3 m4r 1 z = rohs compliant part.
data sheet adm6711/adm6713 rev. b | page 11 of 12 notes
adm6711/adm6713 data sheet rev. b | page 12 of 12 notes ?2006C2011 analog devices, inc. all rights reserved. trademarks and registered trademarks are the property of their respective owners. d03754-0-9/11(b)

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