View ADM13307_2267115.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

triple processor supervisors ADM13307 rev. 0 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 ?2007 analog devices, inc. all rights reserved. features triple supervisory circuits supply voltage range of 2.0 v to 5.5 v pretrimmed threshold options: 1.8 v, 2.5 v, 3.3 v, and 5 v adjustable 0.6 v and 1.25 v voltage references maximum supply current of 40 a 140 ms (minimum) reset timeout reset valid from v dd 1.1 v push-pull reset and reset outputs 8-lead, narrow body soic package temperature range: ?40c to +85c applications supervising dsps/microcontrollers industrial and portable equipment wireless systems notebook/desktop computers general description the ADM13307 is a triple voltage supervisor designed to monitor up to three voltage levels in dsp and microprocessor- based systems. there are five models available, all of which feature a combina- tion of internally pretrimmed undervoltage threshold options for monitoring 1.8 v, 2.5 v, 3.3 v, and 5 v supplies. there are also two adjustable input options with undervoltage thresholds of either 0.6 v or 1.25 v. the ADM13307-18, ADM13307-25, and ADM13307-33 models have two internally fixed thresholds and one externally programmable threshold via a resistor string. the ADM13307-4 and ADM13307-5 offer one internally fixed threshold and two externally programmable thresholds. see the ordering guide for a list of all available options. during power-up, reset is asserted when the supply voltage exceeds 1.1 v. the device then monitors the sensev input pins and holds the reset output low as long as the sensev pins remain below the rising threshold voltage, v it+ . once the supplies monitored at the sensev inputs rise above their associated thresholds, the reset signal remains low for the reset timeout period before deasserting. subsequently, if a volt- age monitored by the sensev pins falls below its associated falling input threshold voltage, v it? , the reset output asserts. functional block diagrams 06923-002 v dd 14k? r1 r2 r3 r4 reset logic + timer oscillator reset ADM13307-33 ADM13307-25 ADM13307-18 sense1 sense2 gnd sense3 mr reset 1.25v figure 1. 06923-001 v dd 14k? r1 r2 0.6v reset logic + timer oscillator reset ADM13307-4 ADM13307-5 sense1 sense2 sense3 mr reset gnd figure 2. the ADM13307 features both an active high reset and an active low reset output. the manual reset input of the ADM13307 can be used to initiate a reset by means of an external push button or logic signal. the ADM13307 is available in an 8-lead narrow body soic package. the device operates over the extended industrial temperature range of ?40c to +85c.
ADM13307 rev. 0 | page 2 of 12 table of contents features .............................................................................................. 1 ? applications ....................................................................................... 1 ? general description ......................................................................... 1 ? functional block diagrams ............................................................. 1 ? revision history ............................................................................... 2 ? specifications ..................................................................................... 3 ? timing requirements .................................................................. 5 ? switching characteristics ............................................................ 5 ? functional truth table ................................................................ 5 ? absolute maximum ratings ............................................................ 6 ? thermal resistance .......................................................................6 ? esd caution...................................................................................6 ? pin configuration and function descriptions ..............................7 ? typical performance characteristics ..............................................8 ? theory of operation ...................................................................... 10 ? input configuration ................................................................... 10 ? reset output ............................................................................... 10 ? manual reset ( mr ) .................................................................... 10 ? outline dimensions ....................................................................... 11 ? ordering guide .......................................................................... 11 ? revision history 8/07revision 0: initial version
ADM13307 rev. 0 | page 3 of 12 specifications v dd = 2.0 v to 5.5 v, ?40c t a +85c, unless otherwise noted. table 1. ADM13307-18, ADM13307-25, and ADM13307-33 parameter min typ max unit test conditions/comments operating voltage range, v dd 2.0 5.5 v supply current, i dd 40 a input capacitance, c i 10 pf v i = 0 v to v dd reset, reset output high level output voltage, v oh v dd ? 0.2 v i oh = ?20 a v dd ? 0.4 v i oh = ?2 ma, v dd = 3.3 v v dd ? 0.4 v i oh = ?3 ma, v dd = 5.5 v low level output voltage, v ol 0.2 v i ol = 20 a 0.4 v i ol = 2 ma, v dd = 3.3 v 0.4 v i ol = 3 ma, v dd = 5.5 v power-up reset voltage 1 0.4 v i ol = 20 a, v dd 1.1 v sense inputs falling input threshold voltage, v it? 1.22 1.25 1.28 v t a = 0c to 85c 1.64 1.68 1.72 v t a = 0c to 85c 2.20 2.25 2.30 v t a = 0c to 85c 2.86 2.93 3.00 v t a = 0c to 85c 4.46 4.55 4.64 v t a = 0c to 85c 1.22 1.25 1.29 v t a = ?40c to +85c 1.64 1.68 1.73 v t a = ?40c to +85c 2.20 2.25 2.32 v t a = ?40c to +85c 2.86 2.93 3.02 v t a = ?40c to +85c 4.46 4.55 4.67 v t a = ?40c to +85c hysteresis at sensev inputs, v hys 10 mv v it? = 1.25 v 15 mv v it? = 1.68 v 20 mv v it? = 2.25 v 30 mv v it? = 2.93 v 40 mv v it? = 4.55 v input voltage at mr high level, v ih 0.7 v dd v low level, v il 0.3 v dd v input transition rise and fall rate at mr 50 ns/v high level input current, i h mr ?130 ?180 a mr = 0.7 v dd , v dd = 5.5 v sense1 5 8 a sense1 = v dd = 5.5 v sense2 6 9 a sense2 = v dd = 5.5 v sense3 ?25 +25 na sense3 = v dd low level input current, i l mr ?430 ?600 a mr = 0 v, v dd = 5.5 v sensev ?25 +25 na sense1, sense2, sense3 = 0 v 1 the lowest supply voltage at which reset becomes active. t r , v dd 15 s/v.
ADM13307 rev. 0 | page 4 of 12 v dd = 2.0 v to 5.5 v, ?40c t a +85c, unless otherwise noted. table 2. ADM13307-4 and ADM13307-5 parameter min typ max unit test conditions/comments operating voltage range, v dd 2.0 5.5 v supply current, i dd 40 a input capacitance, c i 10 pf v i = 0 v to v dd reset, reset output high level output voltage, v oh v dd ? 0.2 v i oh = ?20 a v dd ? 0.4 v i oh = ?2 ma, v dd = 3.3 v v dd ? 0.4 v i oh = ?3 ma, v dd = 5.5 v low level output voltage, v ol 0.2 v i ol = 20 a 0.4 v i ol = 2 ma, v dd = 3.3 v 0.4 v i ol = 3 ma, v dd = 5.5 v power-up reset voltage 1 0.4 v i ol = 20 a, v dd 1.1 v sense inputs falling input threshold voltage, v it? 0.5946 0.6 0.6048 v t a = ?40c to +85c 0.5952 0.6 0.6048 v t a = ?40c to +85c, 2.35 v v dd 5.5 v 2.23 2.25 2.29 v t a = ?40c to +85c 2.90 2.93 2.98 v t a = ?40c to +85c hysteresis at sensev inputs, v hys 0 mv v it? = 0.6 v 20 mv v it? = 2.25 v 30 mv v it? = 2.93 v input voltage at mr high level, v ih 0.7 v dd v low level, v il 0.3 v dd v input transition rise and fall rate at mr 50 ns/v high level input current, i h mr ?130 ?180 a mr = 0.7 v dd , v dd = 5.5 v sense1 5 8 a sense1 = v dd = 5.5 v sense2 ?50 +50 na sense2 = v dd = 5.5 v sense3 ?25 +25 na sense3 = v dd low level input current, i l mr ?430 ?600 a mr = 0 v, v dd = 5.5 v sensev ?25 +25 na sense1, sense2, sense3 = 0 v 1 the lowest supply voltage at which reset becomes active. t r , v dd 15 s/v.
ADM13307 rev. 0 | page 5 of 12 timing requirements v dd = 2.0 v to 5.5 v, r l = 1 m, c l = 50 pf, t a = 25c. table 3. ADM13307-18, ADM13307-25 and ADM13307-33 parameter min typ max unit test conditions/comments pulse width (t w ) sensev 6 s v sensevl = v it? ? 0.3 v, v sensevh = v it+ + 0.3 v mr 100 ns v ih = 0.7 v dd , v il = 0.3 v dd table 4. ADM13307-4 and ADM13307-5 parameter min typ max unit test conditions/comments pulse width (t w ) sensev 30 s v sensevl = v it? ? 0.3 v, v sensevh = v it+ + 0.3 v mr 100 ns v ih = 0.7 v dd , v il = 0.3 v dd switching characteristics v dd = 2.0 v to 5.5 v, r l = 1 m, c l = 50 pf, t a = 25c table 5. ADM13307-18, ADM13307-25 and ADM13307-33 parameter min typ max unit test conditions/comments delay time (t d ) 140 200 280 ms v i(sensev) v it+ + 0.2 v, mr 0.7 v dd propagation delay, high-to-low, mr to reset 1 / reset (t phl ) 200 500 ns v i(sensev) v it+ + 0.2 v, v ih 0.7 v dd , v il 0.3 v dd propagation delay, low-to-high, mr to reset/ reset 1 (t plh ) 200 500 ns v i(sensev) v it+ + 0.2 v, v ih 0.7 v dd , v il 0.3 v dd propagation delay, high-to-low, sensev to reset 1 / reset (t phl ) 1 5 s v ih = v it+ + 0.3 v, v il = v it? ? 0.3 v, mr 0.7 v dd propagation delay, low-to-high, sensev to reset/ reset 1 (t plh ) 1 5 s v ih = v it+ + 0.3 v, v il = v it? ? 0.3 v, mr 0.7 v dd 1 the reset timeout delay of 200 ms masks the propagation delay table 6. ADM13307-4 and ADM13307-5 parameter min typ max unit test conditions/comments delay time (t d ) 140 200 280 ms v i(sensev) v it+ + 0.2 v, mr 0.7 v dd propagation delay, high-to-low, mr to reset 1 / reset (t phl ) 200 500 ns v i(sensev) v it+ + 0.2 v, v ih 0.7 v dd , v il 0.3 v dd propagation delay, low-to-high, mr to reset/ reset 1 (t plh ) 200 500 ns v i(sensev) v it+ + 0.2 v, v ih 0.7 v dd , v il 0.3 v dd propagation delay, high-to-low, sensev to reset 1 / reset (t phl ) 30 s v ih = v it+ + 0.3 v, v il = v it? ? 0.3 v, mr 0.7 v dd propagation delay, low-to-high, sensev to reset/ reset 1 (t plh ) 30 s v ih = v it+ + 0.3 v, v il = v it? ? 0.3 v, mr 0.7 v dd 1 the reset timeout delay of 200 ms masks the propagation delay. functional truth table table 7. mr sense1 > v it1 sense2 > v it2 sense3 > v it3 reset reset l x 1 x 1 x 1 l h h 0 0 0 l h h 0 0 1 l h h 0 1 0 l h h 0 1 1 l h h 1 0 0 l h h 1 0 1 l h h 1 1 0 l h h 1 1 1 h l 1 x = dont care.
ADM13307 rev. 0 | page 6 of 12 absolute maximum ratings table 8. parameter rating supply voltage range, v dd ?0.3 v to +6 v mr ?0.3 v to v dd + 0.3 v sense1, sense2, sense3 (v dd + 0.3 v)v it /v ref reset, reset 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. ?0.3 v to +6 v maximum low output current 5 ma maximum high output current ?5 ma input clamp current (v i < 0 v, v i > v dd ) 20 ma output clamp current (v o < 0 v, v o > v dd ) 20 ma operating temperature range ?40c to +85c storage temperature range ?65c to +150c lead temperature soldering (10 sec) 300c vapor phase (60 sec) 215c infrared (15 sec) 220c thermal resistance table 9. package type ja unit 8-lead soic_n (r-8) 206 c/w esd caution
ADM13307 rev. 0 | page 7 of 12 pin configuration and fu nction descriptions 06923-003 sense1 1 sense2 2 sense3 3 gnd 4 v dd 8 mr 7 reset 6 reset 5 ADM13307 top view (not to scale) figure 3.pin configuration table 10. pin function descriptions pin no. mnemonic description 1 sense1 sense voltage input 1. 2 sense2 sense voltage input 2. 3 sense3 sense voltage input 3. 4 gnd ground. 5 reset active low reset output. 6 reset active high reset output. 7 mr manual reset. 8 v dd supply voltage.
ADM13307 rev. 0 | page 8 of 12 typical performance characteristics 0.6003 0.5985 06923-004 free air temperature, t a (c) input threshold voltage, v it (v) 0.6001 0.5999 0.5997 0.5995 0.5993 0.5991 0.5989 0.5987 ?40?200 20406080 t a = 25c v dd = 2v mr = open 06923-007 0 01 minimum pulse duration at sense, t w (s) 0 0 0 10 9 8 7 6 5 4 3 2 1 100 200 300 400 500 600 700 800 900 v dd = 5.5v mr = open sense threshold overdrive (mv) figure 7. ADM13307-18, ADM13307 -25 and ADM13307-33 minimum pulse duration at sense vs. sense threshold overdrive figure 4. sense threshold voltage vs. free air temperature at v dd 40 ?10 ?1.0 6.5 06923-005 supply voltage, v dd (v) supply current, i dd (a) 35 30 25 20 15 10 5 0 ?5 ?0.5 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 sensev = 5.5v mr = open t a = 25c 30 0 1000 06923-017 minimum pulse duration at sense, t w (s) 40 39 38 37 36 35 34 33 32 31 100 200 300 400 500 600 700 800 900 v dd = 5.5v mr = open sense threshold overdrive (mv) figure 5. supply current vs. supply voltage figure 8. ADM13307-4 and ADM13307-5 minimum pulse duration at sense vs. sense threshold overdrive 0 0? ?5 ?4 ?3 ?2 ?1 06923-008 high level output current, i oh (ma) high level output voltage, v oh (v) 2.50 6 2.00 1.00 0.50 1.50 ?40c 0c +25c +85c v dd = 2v mr = open ?900 ?1.0 7.0 06923-006 input voltage at mr, v i (v) input current, i i (a) 100 200 0 ?100 ?200 ?300 ?400 ?500 ?600 ?700 ?800 ?0.5 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 v dd = 5.5v t a = 25c figure 6. input current vs. input voltage at mr figure 9. high level output volt age vs. high level output current
ADM13307 rev. 0 | page 9 of 12 06923-009 0 0? ?50 ?40 ?30 ?20 ?10 high level output current, i oh (ma) high level output voltage, v oh (v) 6.0 6 0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 ?40c 0c +25c +85c v dd = 5.5v mr = open figure 10. high level output voltage vs. high level output current 0 06 06923-010 low level output current, i ol (ma) low level output voltage, v ol (v) 0.25 0.20 0.15 0.10 0.05 24 135 v dd = 2v mr = open ?40c 0c +25c +85c figure 11. low level output voltage vs. low level output current 0 06 06923-016 low level output current, i ol (ma) low level output voltage, v ol (v) 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 5 10152025303540455055 ?40c 0c +25c +85c v dd = 5.5v mr = open figure 12. low level output voltage vs. low level output current
ADM13307 rev. 0 | page 10 of 12 theory of operation the ADM13307 devices are triple voltage supervisors designed to monitor up to three supplies and provide a reset signal to dsp and microprocessor-based systems. there are five models available, all of which feature a combina- tion of internally pretrimmed undervoltage threshold options for monitoring 1.8 v, 2.5 v, 3.3 v, and 5 v supplies. there are also adjustable input options with threshold voltages of either 0.6 v or 1.25 v. ADM13307-18, ADM13307-25, and ADM13307-33 models have two internally fixed thresholds and one externally programmable threshold, via a resistor string, while the ADM13307-4 and ADM13307-5 offer one internally fixed threshold and two externally programmable thresholds via a resistor string. see the ordering guide for a list of all available options. input configuration the ADM13307 is powered through v dd . to increase noise immunity in noisy applications, place a 0.1 f capacitor between the v dd input and ground. the sensev inputs are resistant to short power supply glitches. do not allow unused sensev inputs to float or to be grounded, instead connect it to a supply voltage greater than its specified threshold voltage. typically, the threshold voltage at an adjustable sensev input is either 0.6 v or 1.25 v. refer to the ordering guide for details. for example, to monitor a voltage greater than 1.25 v, con- nect a resistor divider network to the device as depicted in figure 13 , where, ? ? ? ? ? ? + = r2 r2r1 v monitered v25. 1 06923-012 r1 r2 monitored voltage v ref = 1.25v figure 13. setting the adjustable monitor reset output the reset outputs are guaranteed to be in the correct state for v dd down to 1.1 v. during power up, reset is asserted when the supply voltage becomes greater than 1.1 v. once the supplies monitored at the sensev pins rise above their associated threshold level, the reset signal remains low for the reset timeout period before deasserting. subsequently, if a supply monitored by the sensev pins falls below its associated thresh- old, the reset output reasserts. 06923-013 sensev v (nom) 0 1 v it? reset t d t d t t figure 14. reset timing diagram the ADM13307 features both an active-low push-pull reset output and active-high push-pull reset output. manual reset ( mr ) the ADM13307 features a manual reset input, which when driven low, asserts the reset output, as shown in figure 15 . when mr transitions from low to high, the reset remains asserted for the duration of the reset active timeout period before deasserting. an external push-button switch can be connected between mr and ground to allow the user to generate a reset. 06923-015 0 1 reset t d t 0 1 t mr figure 15. manual reset timing diagram
ADM13307 rev. 0 | page 11 of 12 outline dimensions 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-012-a a 012407-a 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) 4 1 85 5.00 (0.1968) 4.80 (0.1890) 4.00 (0.1574) 3.80 (0.1497) 1.27 (0.0500) bsc 6.20 (0.2441) 5.80 (0.2284) 0.51 (0.0201) 0.31 (0.0122) coplanarity 0.10 figure 16. 8-lead standard small outline package [soic_n] narrow body (r-8) dimensions shown in millimeters and (inches). ordering guide model nominal input voltage threshold voltage (typical) temperature range package description package option sense1 sense2 sense3 sense1 sense2 sense3 ADM13307-18arz 1 3.3 v 1.8 v adj 2 2.93 v 1.68 v 1.25 v C40c to +85c 8-lead soic_n r-8 ADM13307-18arz-rl7 1 3.3 v 1.8 v adj 2 2.93 v 1.68 v 1.25 v C40c to +85c 8-lead soic_n r-8 ADM13307-25arz 1 3.3 v 2.5 v adj 2 2.93 v 2.25 v 1.25 v C40c to +85c 8-lead soic_n r-8 ADM13307-25arz-rl7 1 3.3 v 2.5 v adj 2 2.93 v 2.25 v 1.25 v C40c to +85c 8-lead soic_n r-8 ADM13307-33arz 1 5 v 3.3 v adj 2 4.55 v 2.93 v 1.25 v C40c to +85c 8-lead soic_n r-8 ADM13307-33arz-rl7 1 5 v 3.3 v adj 2 4.55 v 2.93 v 1.25 v C40c to +85c 8-lead soic_n r-8 ADM13307-4arz 1 2.5 v adj 3 adj 3 2.25 v 0.6 v 0.6 v C40c to +85c 8-lead soic_n r-8 ADM13307-4arz-rl7 1 2.5 v adj 3 adj 3 2.25 v 0.6 v 0.6 v C40c to +85c 8-lead soic_n r-8 ADM13307-5arz 1 3.3 v adj 3 adj 3 2.93 v 0.6 v 0.6 v C40c to +85c 8-lead soic_n r-8 ADM13307-5arz-rl7 1 3.3 v adj 3 adj 3 2.93 v 0.6 v 0.6 v C40c to +85c 8-lead soic_n r-8 1 z = rohs compliant part. 2 1.25 v adjustable. external resistor divider determines the actual sense voltage. 3 0.6 v adjustable. external resistor divider determines the actual sense voltage.
ADM13307 rev. 0 | page 12 of 12 notes ?2007 analog devices, inc. all rights reserved. trademarks and registered trademarks are the prop erty of their respective owners. d06923-0-8/07(0)

▲Up To Search▲

Price & Availability of ADM13307

	To Download ADM13307 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .