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ap393a low power low offset voltage dual comparators ap393a rev. 7 1 of 15 february 2009 www.diodes.com ? diodes incorporated ? wide supply voltage range: 2.0v to 36v single or dual supplies: 1.0v to 18v ? very low supply current drain (0.4ma) ? independent of supply voltage ? low input biasing current: 150na ? low input offset current: 70na ? low input offset voltage: 4mv ? input common-mode voltage range includes ground ? differential input voltage range equal to the power supply voltage ? low output saturation voltage: 250mv at 4ma ? output voltage compatible with ttl, dtl, ecl, mos and cmos logic systems ? msop-8l and sop-8l: available in ?green? molding compound (no br, sb) ? lead free finish/ rohs compliant (note 1) the ap393a consists of two independent precision voltage comparators with an offset voltage specification as low as 8.0mv max for two comparators which were designed specifically to operate from a single power supply over a wide range of voltages. operation from split power supplies is also possible and the low power supply current drain is independent of the magnitude of the power supply voltage. these comparators also have a unique characteristic in that the input common-mode voltage range includes ground, even though operated from a single power supply voltage. application areas include limit comparators, simple analog to digital converters; pulse, square wave and time delay generators; wide range vco; mos clock timers; multivibrators and high voltage digital logic gates. the ap393a is designed to directly interface with ttl and cmos. when operated from both plus and minus power supplies, the ap393a will directly interface with mos logic where their low power drain is a distinct advantage over standard comparators. ? high precision comparators ? reduced v os drift over temperature ? eliminates need for dual supplies ? allows sensing near ground ? compatible with all forms of logic ? power drain suitable for battery operation ordering information package packing green g : green 13 : tape & reel a p 3 9 3 a xx g - 13 m8 : msop-8l s : sop-8l device package code packaging (note 2) 13? tape and reel quantity part number suffix ap393am8g-13 m8 msop-8l 2500/tape & reel -13 ap393asg-13 s sop-8l 2500/tape & reel -13 notes: 1. eu directive 2002/95/ec (rohs). all applicable rohs exemptions applied. please visit our website at http://www.diodes.com/products/lead_free.html 2. pad layout as shown on diodes inc. suggested pad layout document ap02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf . features general description applications
ap393a low power low offset voltage dual comparators ap393a rev. 7 2 of 15 february 2009 www.diodes.com ? diodes incorporated pin assignments msop-8l/ sop-8l 1 2 3 45 6 7 8 ( top view ) inverting input 1 gnd ap393a non-inverting input 1 output 2 output 1 v + inverting input 2 non-inverting input 2 pin descriptions pin name pin no. description output 1 1 channel 1 output inverting input 1 2 channel 1 negative input non-inverting input 1 3 channel 1 positive input gnd 4 ground non-inverting input 2 5 channel 2 positive input inverting input 2 6 channel 2 negative input output 2 7 channel 2 output v + 8 v cc
ap393a low power low offset voltage dual comparators ap393a rev. 7 3 of 15 february 2009 www.diodes.com ? diodes incorporated block diagram inverting input 1 gnd non-inverting input 1 output 2 output 1 inverting input 2 non-inverting input 2 1 2 3 4 5 6 7 8 ab + -+- v + v + 100 a 3.5 a 100 a 3.5 a +input -input output q1 q2 q3 q4 q5 q6 q7 q8
ap393a low power low offset voltage dual comparators ap393a rev. 7 4 of 15 february 2009 www.diodes.com ? diodes incorporated absolute maxi mum ratings symbol paramete r rating unit v cc supply voltage 40 v v in differential input voltage (note 10) 40 v v in input volta g e -0.3 to +40 v i cc input current (v in -0.3v) (note 5) 50 ma p d power dissipation (note 3) msop-8l 670 mw sop-8l 510 output short-circuit to ground (note 4) continuous t op operating junction temperature range 0 to +70 o c t st stora g e temperature ran g e -65 to +150 o c recommended oper ating conditions symbol paramete r min max unit v cc supply voltage (single) +2 +36 v v cc supply voltage (dual supplies, v + vs gnd) 1 18 v v in differential input voltage (single) (note 10) 0 36 v v in differential input voltage (dual supplies) (note 10) -18 +18 v t a operating ambient temperature 0 70 o c electrical characteristics ( v cc = 5v, t a = 25 o c, unless otherwise stated ) symbol parameter conditions min typ. max unit v offset input offset voltage (note 11) - 4.0 8.0 mv i offset input offset current i in (+) - i in (-) v cm = 0v - 70 150 na i bias input bias current i in (+) or i in (-) with output in linear range, v cm = 0v (note 7) - 150 400 na input common mode voltage range v + = 30v (note 8) 0 - v + -1.5 v i cc supply current r l = v + = 5v - 0.4 1 ma v + = 36v - 1 2.5 voltage gain r l 15k ? , v + = 15v v o = 1v to 11v 50 200 - v/mv large signal response time v in = ttl logic swing, v ref = 1.4v, v rl = 5v, r l = 5.1k ? - 300 - ns response time v rl = 5v, r l = 5.1k ? (note 9) - 1.3 - s i o(sink) output sink current v in (-) = 1v, v in (+) = 0, v o 1.5v 6.0 16 - ma v sat saturation voltage v in (-) = 1v, v in (+) = 0, i sink 4m a - 250 400 mv i o(leak) output leakage current v in (-) = 0, v in (+) = 1v, v o = 5v - 0.1 - na
ap393a low power low offset voltage dual comparators ap393a rev. 7 5 of 15 february 2009 www.diodes.com ? diodes incorporated electrical characteristics (continued) ( v cc = 5v ) ( note 6 ) symbol parameter conditions min typ. max unit v offset input offset volta g e (note 11) -- 9 mv i offset input offset current i in (+) -i in (-), v cm = 0v - - 180 na i bias input bias current i in (+) or i in (-) with output in linear range, v cm = 0v (note 7) - - 500 na input common mode voltage range v + =30v (note 8) 0 - v + -2.0 v v sat saturation voltage v in (-) = 1v, v in (+) = 0, i sink 4ma - - 700 mv i o(leak) output leakage current v in (-) = 0, v in (+) = 1v, v o = 30v - - 1.0 a differential input voltage keep all v in ?s 0v (or v - , if used), (note 10) - - 36 v ja thermal resistance junction-to-ambient msop-8l (note 12) 208 o c/w sop-8l (note 12) 165 jc t hermal resistance junction-to-case msop-8l (note 12) 39 o c/w sop-8l (note 12) 26 notes: 3. for operating at high temperatures, the ap393a must be derated based on a 125c maximum junction temperature and a thermal resistance of 170c/w which applies for the device soldered in a printed circuit board, operating in a still air ambi ent. the low bias dissipation and the ?on-off? characteristic of the outputs keeps the chip dissipation very small (p d < 100mw), provided the output transistors are allowed to saturate. 4. short circuits from the output to v + can cause excessive heating and eventual destruction. when considering short circuits to ground, the maximum output current is approximately 20ma independent of the magnitude of v + . 5. this input current will only exist when the voltage at any of the input leads is driven negative. it is due to the collector-ba se junction of the input pnp transistors becoming forward biased and thereby acting as input diode clamps. in addition to this diode action, there is also lateral npn parasitic transistor ac tion on the ic chip. this transistor action can cause the outp ut voltages of the comparators to go to the v + voltage level (or to ground for a large overdrive) for the time duration that an input is driven negative. this is not destructive and normal output states will re-establish when the input voltage, which is negat ive, again returns to a value greater than -0.3v. 6. the ap393a temperature specifications are limited to 0c < t op < +70c. 7. the direction of the input current is out of the ic due to the pnp input stage. this current is essentially constant, independe nt of the state of the output so no loading change exists on the reference or input lines. 8. the input common-mode voltage or either input signal voltage should not be allowed to go negative by more than 0.3v. the upper end of the common-mode voltage range is v + -1.5v at 25c, but either or both inputs can go to 36v without damage, independent of the magnitude of v + . 9. the response time specified is for a 100mv input step with 5mv overdrive. for larger overdrive signals 300ns can be obtained, see typical performance characteristics section. 10. positive excursions of input voltage may exceed the power supply level. as long as the other voltage remains within the common-mode range, the comparator will provide a proper ou tput state. the low input voltage state must not be less than -0.3v (or 0.3v below the magnitude of the negative power supply, if used). 11. at output switch point, v o ~ 1.4v, r s =0 ? with v + from 5v to 30v; and over the full input common-mode range (0v to v + -1.5v), at 25c. 12. test condition for msop-8l and sop-8l: device mounted on fr-4 substrate pc board, 2oz copper, with minimum recommended pad layout.
ap393a low power low offset voltage dual comparators ap393a rev. 7 6 of 15 february 2009 www.diodes.com ? diodes incorporated application information the ap393a is high gain, wide bandwidth devices, like most comparators, can easily oscillate if the output lead is inadvertentl y allowed to capacitively couple to the inputs via stray capacitance. this shows up only during the output voltage transition int ervals as the comparator change states. power supply bypassing is not required to solve this problem. standard pc board layout is helpful as it reduces stray input-output coupling. reducing the input resistors to < 10k ? reduces the feedback signal levels and finally, adding even a small amount (1.0 to 10 mv) of positive feedback (hysteresis) causes such a rapid transition that oscillations due to stray fee dback are not possible. simply socketing the ic and attaching resistors to the pins will cause input-output oscillations during the small transition intervals unless hysteresis is used. if the input signal is a pulse waveform, with relatively fast rise and fall times, hystere sis is not required. all input pins of any unused comparators should be tied to the negative supply. the bias network of the ap393a establishes a drain current independent of the magnitude of the power supply voltage over the range of from 2.0 v dc to 30 v dc . it is usually unnecessary to use a bypass capacitor across the power supply line. the differential input voltage may be larger than v+ without damaging the device (note 10). protection should be provided to prevent the input voltages from going negative more than -0.3 v dc (at 25c). an input clamp diode can be used as shown in the applications section. the output of the ap393a is the uncommitted collector of a grounded-emitter npn output transistor. many collectors can be tied together to provide an output or?ing function. an output pull-up resistor can be connected to any available power supply voltag e within the permitted supply voltage range and there is no restriction on this voltage due to the magnitude of the voltage applied to t he v + terminal of the ap393a package. the output can also be used as a simple spst switch to ground (when a pull-up resistor is not used). the amount of current the output device can sink is limited by the drive available (which is independent of v + ) and the of this device. when the maximum current limit is reached (approximately 16ma), the output transistor will come out of saturation and the outpu t voltage will rise very rapidly. the output saturation voltage is limited by the approximately 60 ? r sat of the output transistor. the low offset voltage of the output transistor (1.0 mv) allows the output to clamp essentially to ground level for small load currents. typical circuit ( v cc = 5.0v dc ) v o 3.0k v + +v in +v ref basic comparator + - ap393a driving cmos + - +5.0v dc 100k ap393a 1/4 mm54cxx driving ttl + - ap393a 1/4 dm54xx +5v dc 10k + - v o 100k 100k 100k 100k 75 pf 4.3k v + v + v + squarewave oscillator 1:100khz 1/2 ap393a 0
ap393a low power low offset voltage dual comparators ap393a rev. 7 7 of 15 february 2009 www.diodes.com ? diodes incorporated typical circuit (continued) ( v cc = 5.0v dc ) pulse generator + - v o 100k 1m 1m 1m 80 pf 15k v + +15v dc 1m r2 r1 1n914 d1 1n914 d2 60 s 6 s -v + 0 t o t 1 t 2 *for large ratios of r1/r2, d1 can be omitted 1/2 ap393a * crystal controlled oscillator + - v o 200k 0.1 f 2.0k v + v + 100k 200k 0 crystal f=100khz 1/2 ap393a + - + - + - +v c frequency control voltage input 0.1 f 10 20k 20k 50k v + /2 output2 output1 500pf v + 0.01 f 3.0k 5.1k 100k 3.0k v + two-decade high frequency vco v + /2 1/2 ap393a 1/2 ap393a 1/2 ap393a 100k v o 3.0k v + +v in +v ref basic comparator + - v*=+30v dc +250mv dc < v c < +50v dc 700hz < f o < 100khz 1/2 ap393a non-inverting comparator with hysteresis v o 3k v + +v in +v ref + - 10m 10k 1/2 ap393a
ap393a low power low offset voltage dual comparators ap393a rev. 7 8 of 15 february 2009 www.diodes.com ? diodes incorporated typical circuit (continued) ( v cc = 5.0v dc ) inverting comparator with hysteresis + - 3k +v in v + 1m 1m 1m v o v + 1/2 ap393a v o 6.2k v + output strobing + - strobe input * * or logic gate without pull-up resistor 1/2 ap393a and gate f 3k v + a + - 1k b c 1k 100k 100k 100k 39k +0.375v 0 "0" "1" 1/2 ap393a v + or gate 3k v + a + - 1k b c 1k 100k 100k 100k 200k +0.075v v + 0 "0" "1" f 1/2 ap393a large fan-in and gate r4 3k v + a + - d1 b c 100k 10k v + 0 "0" "1" d d2 d3 d4 all diodes 1n914 100k v out 1/2 ap393a limit comparator + - + - 2r s 2r s r s 10k v + (12v dc ) lamp 12 esb +v in +v ref low +v ref hi 2n2222 1/2 ap393a 1/2 ap393a
ap393a low power low offset voltage dual comparators ap393a rev. 7 9 of 15 february 2009 www.diodes.com ? diodes incorporated typical circuit (continued) ( v cc = 5.0v dc ) 5.1k comparing input voltages of opposite polarity + - 2n2222 100k 100k +v in1 -v in2 1/2 ap393a oring the outputs + - + - 3.0k v o v + 1/2 ap393a 1/2 ap393a zero crossing detector (single power supply) 5.1k v + + - v o 100k 100k 5.1k 5.1k 1n914 v in 10k 20m 1/2 ap393a one-shot multivibrator 10k v + + - v o 1n914 1m 1n914 100pf 0.001 f 1m 1m + 0 t 0 pw t 0 t 1 0 v 1ms 1/2 ap393a bi-stable multivibrator 15k v + + - v o 100k s 100k 100k 51k r v + 0 v + 0 +15v 0 s r 1/2 ap393a
ap393a low power low offset voltage dual comparators ap393a rev. 7 10 of 15 february 2009 www.diodes.com ? diodes incorporated typical circuit (continued) ( v cc = 5.0v dc ) one-shot multivibrator with input lock out v + + - v o 100pf 100k 1m t 0 t 1 0 v + + - 100k 1m +v in 240k 62k 10m 15k 560k 10m 40 s 1 s 0 +4v 1/2 ap393a 1/2 ap393a time delay generator 3.0k v + v o3 10m 0 + - 3.0k v o2 + - 3.0k v o1 + - + - t 0 t 1 t 2 t 3 t 4 v 1 v 2 v 3 v + t v c1 v 1 v 2 v 3 51k 51k 51k 10k 10k 10k 200k 15k 10k v c1 c1 0.001 f 10m 10m v + v + v + t 0 t 4 +v in 10k input gating signal 0 v + t 0 t 1 0 v + t 0 t 2 0 v + t 0 t 3 1/2 ap393a 1/2 ap393a 1/2 ap393a 1/2 ap393a 0
ap393a low power low offset voltage dual comparators ap393a rev. 7 11 of 15 february 2009 www.diodes.com ? diodes incorporated split-supply applications ( v + = +15v dc and v - = -15 v dc ) + - + - + - 2.4k 2.4k a b 2k 8.2k 3.9k2k v + 10k 51k 51k 5.1k 50pf v - 6.8k mos clock driver 1/2 ap393a 1/2 ap393a 1/2 ap393a 1/2 ap393a zero crossing detector + - v in + v - 5.1k 1/2 ap393a v + v o + - v in + v 5.1k 1/2 ap393a v + v o -5 v dc comparator with a negative reference
ap393a low power low offset voltage dual comparators ap393a rev. 7 12 of 15 february 2009 www.diodes.com ? diodes incorporated typical characteristics supply current input current response time for various input overdrives?negative transition response time for various input overdrives?positive transition output saturation v oltage
ap393a low power low offset voltage dual comparators ap393a rev. 7 13 of 15 february 2009 www.diodes.com ? diodes incorporated marking information (1) msop-8l ap393a ( top view ) y w x part number logo y : year : 0~9 a~z : green 87 65 1 234 a~z : 27~52 week; z represents w : week : a~z : 1~26 week; 52 and 53 week (2) sop-8l ( top view ) ap393a yy ww x x logo part number 5 8 4 1 ww : week : 01~52; 52 yy : year : 08, 09,10~ g : green x : internal code represents 52 and 53 week
ap393a low power low offset voltage dual comparators ap393a rev. 7 14 of 15 february 2009 www.diodes.com ? diodes incorporated package information (all dimensions in mm) (1) package type: msop-8l 2.9/3.1 0.75/0.95 0/0.15 2.9/3.1 4.7/5.1 0.65bsc. 0.22/0.38 0.05 0.15typ. 0.4/0.8 0.25 0.95ref. gauge plane 0 / 8 "a" detail "a" 1 6x-0.65 land pattern recommendation (unit:mm) 8x-1.4 4.4 8x-0.45 0.05/0.15 (2) package type: sop-8l 1.27typ 0.3/0.5 7~9 4.85/4.95 3.85/3.95 5.90/6.10 0.15/0.25 7~9 0.62/0.82 0.10/0.20 gauge plane 0.254 seating plane 0.35max. 45 detail "a" detail "a" 1.30/1.50 1.75max. land pattern recommendation (unit: mm) 6x-1.27 8x-1.55 8x-0.60 5.4 0/8
ap393a low power low offset voltage dual comparators ap393a rev. 7 15 of 15 february 2009 www.diodes.com ? diodes incorporated important notice life support diodes incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or ot her changes without further notice to any product herein. diodes incorporated does not assume any liability arising out of the application or use of any pr oduct described herein; neither does it convey any license under its patent rights, nor the rights of others. the user of products in such applications shall assume all risks of such use and will agree to hold diodes incorporated and all the companies whose products are represented on our website, harmless against all dam ages. diodes incorporated products are not authorized for use as critical components in life support devices or systems without the e xpressed written approval of the president of diodes incorporated.

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