for pricing, delivery, and ordering information, please contact maxim/dallas direct! at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com. general description the max9100/max9101 micropower comparators are optimized for single-cell systems, and are fully speci- fied for operation from a single supply of 1.0v to 5.5v. this ultra-low voltage operation, 5? quiescent current consumption, and small footprint make the max9100/max9101 ideal for use in battery-powered systems. a wide-input common-mode range that includes the negative rail and rail-to-rail output swing allows almost all of the power supply to be used for sig- nal voltage. in addition, propagation delay is less than 4?, and rise and fall times are 100ns. the max9100 features a push-pull cmos output stage that sinks and sources current with large internal output drivers that allow rail-to-rail output swings with loads up to 5ma.the max9101 has an open-drain output stage that makes it suitable for mixed-voltage designs. the max9100/max9101 are available in tiny sot23-5 packages. ________________________applications single-cell systems pagers closed sensor applications battery-powered instrumentation portable electronic equipment portable communication devices ____________________________features ultra-low voltage: guaranteed down to 1.0v low quiescent current: 5? optimized for single-cell battery-powered systems wide input common-mode range cmos rail-to-rail output swing (max9100) open-drain output (max9101) 4? propagation delay high output drive capability: 5ma sink and source (max9100) no output phase reversal for overdriven inputs available in tiny sot23-5 package max9100/max9101 +1.0v micropower sot23 comparators gnd in- in+ 1 5 v cc out max9100 max9101 sot23 top view 2 3 4 typical operating characteristic 2 4 3 6 5 7 8 -40 10 -15 35 60 85 supply current vs. temperature max9100 toc01 temperature ( c) i cc ( a) v cc = +5v v cc = +2v v cc = +1v 19-1808; rev 1; 1/07 ordering information part pin- package top mark pkg code max9100 euk-t 5 sot23-5 ador u5-1 max9100esa 8 so s8-2 max9101 euk-t 5 sot23-5 ados u5-1 max9101esa 8 so s8-2 pin configurations pin configurations continued at end of data sheet. ________________________________________________________________ maxim integrated products 1 note: all devices specified for over -40? to +85? operating temperature range.
max9100/max9101 +1.0v micropower sot23 comparators 2 _______________________________________________________________________________________ absolute maximum ratings electrical characteristics (v cc = +1.2v to +5.5v, v cm = 0v, and t a = t min to t max , unless otherwise noted. typical values are at t a = +25 c.) (note 1) stresses beyond those listed under ?bsolute maximum ratings?may cause permanent damage to the device. these are stress rating s only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specificatio ns is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. supply voltage (v cc to gnd) ................................. -0.3v to +6v in+ or in- to gnd...................................... -0.3v to (v cc + 0.3v) current into input pins..................................................... ?0ma output voltages to gnd max9100 .............................................. -0.3v to (v cc + 0.3v) max9101 ............................................................ -0.3v to +6v output short-circuit duration (to v cc or gnd)......... continuous continuous power dissipation (t a = +70 c) 5-pin plastic sot23 (derate 7.3mw/ c above +70 c) ............................... 571mw 8-pin plastic so (derate 5.88mw/ c above +70 c) ............................. 471mw operating temperature range .......................... -40 c to +85 c junction temperature ..................................................... +150 c storage temperature range ............................ -65 c to +150 c lead temperature (soldering, 10s) .................................+300? parameter symbol conditions min typ max units supply voltage range v cc inferred from the psrr tests 1.0 5.5 v v cc = +1v, t a = +25 c 5.0 8.0 supply current i cc v cc = +5v, t a = t min to t max 6.0 13.0 ? t a = +25 c 3 10 input offset voltage v os t a = t min to t max 20 mv input hysteresis v hyst 2mv v cc = +5.5v, t a = +25 c 0.1 5 input offset current i os v cc = +5.5v, t a = t min to t max 10 na v cc = +5.5v, t a = +25 c 5 15 input bias current i b v cc = +5.5v, t a = t min to t max 30 na differential mode 200 input resistance r in common mode 65 m ? input common-mode voltage range (note 2) v cm inferred from cmrr test 0 v c c - 0.2 v t a = +25 c5468 common-mode rejection ratio (note 3) cmrr t a = t min to t max 46 db 1.0v v cc 1.5v, t a = +25 c5466 power-supply rejection ratio psrr 1.5v v cc 5.5v, t a = -40 c to +85? 56 68 db v cc = +5.0v, i source = 5ma 90 180 v cc = +1.2v, i source = 0.5ma 60 120 output-voltage high (max9100) v c c - v oh v cc = +1.0v, i source = 0.1ma, t a = +25 c 25 75 mv v cc = +5.0v, i sink = 5ma 100 180 v cc = +1.2v, i sink = 0.5ma 45 120 output-voltage low v ol v cc = +1.0v, i sink = 0.5ma, t a = +25 c1575 mv
max9100/max9101 +1.0v micropower sot23 comparators _______________________________________________________________________________________ 3 electrical characteristics (continued) (v cc = +1.2v to +5.5v, v cm = 0v, and t a = t min to t max , unless otherwise noted. typical values are at t a = +25 c.) (note 1) parameter symbol conditions min typ max units v cc = +5.0v 25 sourcing (max9100) v cc = +1.2v 3 v cc = +5.0v 28 output short-circuit current i sc sinking v cc = +1.2v 3 ma output open-drain leakage current (max9101) i lkg v cc = +5.5v 0.02 0.2 ? power-up time t pu 250 ns input capacitance c in 3pf output rise time (max9100) t rise c l = 15pf 100 ns output fall time (note 4) t fall c l = 15pf 100 ns t pd+ v overdrive = 50mv, v cc = +5.0v 3.4 t pd- v overdrive = 50mv, v cc = +5.0v 4.5 t pd+ v overdrive = 50mv, v cc = +1.0v 3.3 propagation delay (note 5) t pd- v overdrive = 50mv, v cc = +1.0v 3.7 ? note 1: all specifications are 100% production tested at t a = +25 c. all temperature limits are guaranteed by design. note 2: operation with v cm up to v cc is possible with reduced accuracy. see the input stage circuitry and rail-to-rail operation section. note 3: tested over the specified input common-mode voltage range and with v cc = +5.5v. note 4: specified with c l = 15pf for max9100/max9101, and with r pullup = 5k ? for max9101. note 5: input overdrive is defined above and beyond the offset voltage and hysteresis of the comparator input.
typical operating characteristics (v cc = +5v, v cm = 0v, t a = +25 c, unless otherwise noted.) max9100/max9101 +1.0v micropower sot23 comparators 4 _______________________________________________________________________________________ 2 4 3 6 5 7 8 -40 10 -15 356085 supply current vs. temperature max9100 toc01 temperature ( c) i cc ( a) v cc = +5v v cc = +2v v cc = +1v 0 200 100 400 300 500 600 010 51520 output-voltage low vs. sink current max1900 toc02 i load (ma) v ol (mv) v cc = +2v v cc = +1v v cc = +5v v cc = +1.2v 0 200 100 400 300 500 600 010 51520 output-voltage high vs. source current max1900 toc03 i load (ma) v cc - v oh (mv) v cc = +2v v cc = +1v v cc = +1.2v v cc = +5v 300 500 400 700 600 800 900 02 1345 input bias current vs. v cm max9100 toc04 v cm (v) i bias (na) -100 100 0 200 i bias(-) = i bias(+) 4.5 5.5 5.0 6.5 6.0 7.0 7.5 13 245 supply current vs. supply voltage max9100 toc05 v cc (v) i cc ( a) v out = v cc v out = gnd v cm = v cc 40 35 30 25 20 15 10 5 0 0.01 1 10 0.1 100 supply current vs. output transition frequency max9100 toc06 f clk (khz) i cc ( a) v cc = +5v v cc = +2v v cc = +1v 2.5 3.0 4.0 3.5 4.5 5.0 0 100 50 150 200 250 propagation delay (tpd+) vs. input overdrive max9100 toc07 v od (mv) propagation delay ( s) v cc = +5v t a = +85 c t a = +25 c, -40 c 2.5 3.0 4.0 3.5 4.5 5.0 040 20 60 80 100 propagation delay (tpd+) vs. input overdrive max9100 toc08 v od (mv) propagation delay ( s) v cc = +2v t a = +85 c t a = +25 c t a = -40 c 2.5 3.0 4.0 3.5 4.5 5.0 040 20 60 80 100 propagation delay (tpd)+ vs. input overdrive max9100 toc09 v od (mv) propagation delay ( s) v cc = +1v t a = +85 c t a = +25 c t a = -40 c
max9100/max9101 +1.0v micropower sot23 comparators _______________________________________________________________________________________ 5 2.5 2.0 3.5 3.0 4.0 4.5 02 1 345 propagation delay vs. v cm max9100 toc10 v cm (mv) propagation delay ( s) t pd- t pd+ propagation delay (t pd +) out 500mv/div max9100 toc11 1 s/div in+ 50mv/div v od = 50mv propagation delay (t pd -) max9100 toc12 1 s/div in+ out 50mv/div 500mv/div v od = 50mv propagation delay (t pd +) max9100 toc13 1 s/div in+ out 50mv/div 2v/div v od = 50mv propagation delay (tpd-) max9100 toc14 1 s/div in+ out 50mv/div 2v/div v od = 50mv power-up delay max9100 toc15 100ns/div v cc out 2v/div 2v/div v in - = 0v v in + = 100mv typical operating characteristics (continued) (v cc = +5v, v cm = 0v, t a = +25 c, unless otherwise noted.)
max9100/max9101 +1.0v micropower sot23 comparators 6 _______________________________________________________________________________________ detailed description the max9100/max9101 are low-power and ultra-low single-supply voltage comparators. they have an oper- ating supply voltage range between +1.0v to +5.5v and consume only 5? of quiescent supply current, while achieving 4? propagation delay. input stage circuitry and rail-to-rail operation the devices?input common-mode range is fully speci- fied from 0 to (v cc - 0.2v), although full rail-to-rail input range is possible with degraded performance. these comparators may operate at any differential input volt- age within these limits. input bias current is typically ?na if the input voltage is within the specified com- mon-mode range. comparator inputs are protected from overvoltage by internal diodes connected to the supply rails. as the input voltage exceeds the supply rails, these diodes become forward biased and begin to conduct. consequently, bias currents increase expo- nentially as the input voltage exceeds the supply rails. true rail-to-rail input operation is also possible. for input common-mode voltages from v cc - 0.2v to v cc , the input bias current will typically increase to 800na. additionally, the supply current will typically increase to 7?. otherwise, the device functions as within the specified common-mode range. see graphs in the typical operating characteristics . output stage circuitry the max9100/max9101 contain a unique output stage capable of rail-to-rail operation. many comparators consume orders of magnitude more current during switching than during steady-state operation. however, with this family of comparators, the supply-current change during an output transition is extremely small. the typical operating characteristics graph supply current vs. output transition frequency shows the min- imal supply-current increase as the output switching frequency approaches 100khz. this characteristic reduces the requirement for power-supply filter capaci- tors to reduce glitches created by comparator switch- ing currents. this feature increases battery life in portable applications. push-pull output (max9100) the max9100 has a push-pull cmos output. the out- put stage swings rail-to-rail under no-load conditions. external load drive capability varies with supply voltage. switching current output rising max9100 toc16 100mv/div 1ma/div 2 s/div 5v/div v od = 50mv , switching current, output falling max9100 toc17 in+ i cc 100mv/div 1ma/div 2 s/div out 5v/div v od = 50mv response to slow triangle waveform max9100 toc18 5.0ms/div in+ out 50mv/div 2v/div typical operating characteristics (continued) (v cc = +5v, v cm = 0v, t a = +25 c, unless otherwise noted.) pin description pin sot23-5 so-8 name function 1 6 out comparator output 24 gnd ground 3 3 in+ noninverting input 4 2 in- inverting input 1, 5, 8 n.c. no connection 57v cc positive supply voltage
max9100/max9101 +1.0v micropower sot23 comparators _______________________________________________________________________________________ 7 open-drain output (max9101) the max9101 has an open-drain output, which can be pulled up to +6.0v above ground independent of the supply voltage. this is typically used with an external pullup resistor, facilitating interface between mixed logic voltages. alternatively, multiple open-drain comparator outputs can be connected in a wired-or configuration. applications information low-voltage operation: v cc = 1v the minimum operating voltage is +1.0v. at lower sup- ply voltages, the input common-mode range remains rail-to-rail, but the comparator? output drive capability is reduced and propagation delay increases (see the typical operating characteristics ). internal hysteresis hysteresis increases the comparators?noise margin by increasing the upper threshold and decreasing the lower threshold (figure 1). this hysteresis prevents the comparator from providing multiple poles when driven with a very-slow-changing signal. additional hysteresis these comparators have 1.0mv internal hysteresis. additional hysteresis can be generated with two resis- tors using positive feedback (figure 2). use the follow- ing procedure to calculate resistor values: 1) calculate the trip points of the comparator using these formulas: and v th is the threshold voltage at which the comparator switches its output from high to low as v in rises above the trip point. v tl is the threshold voltage at which the comparator switches its output from low to high as v in drops below the trip point. 2) the hysteresis band will be: v hys = v th - v tl = v cc 3) in this example, let v cc = +5v and v ref = +2.5v: and 4) select r2. in this example, we will choose 1k ? . 5) select v hys . in this example, we will choose 50mv. 6) solve for r1: where r1 100k ? , v th = 2.525v, and v tl = 2.475v. board layout and bypassing a power-supply bypass capacitor is not normally required, but 100nf bypass capacitors can be used when the supply impedance is high or when the supply 0 050 5 1000 1 1000 . = + ? ? ? ? ? ? r vv r rr hys cc = + ? ? ? ? ? ? 2 12 v r rr tl =? + ? ? ? ? ? ? 25 1 2 12 . v r rr th =+ + ? ? ? ? ? ? 25 25 2 12 .. r rr 2 12 + ? ? ? ? ? ? vv r rr tl ref =? + ? ? ? ? ? ? 1 2 12 vv vvr rr th ref cc ref =+ ? () + ? ? ? ? ? ? ? ? ? ? 2 12 thresholds out in- in+ v hyst hysteresis band v in - v hyst v in - +v hyst/2 gnd v cc out r2 r2 v in v ref v cc max9100 figure 1. threshold hysteresis band figure 2. additional hysteresis (max9100)
max9100/max9101 +1.0v micropower sot23 comparators maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circu it patent licenses are implied. maxim reserves the right to change the circuitry and specifications without notice at any time. 8 _____________________maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 2007 maxim integrated products is a registered trademark of maxim integrated products, inc. leads are long. minimize signal lead lengths to reduce stray capacitance between the input and output that might cause instability. typical application logic-level translator 3v to 5v figure 3 shows an application that converts 3v logic levels to 5v logic levels. the push-pull output max9100 is powered by the +5v supply voltage, and the invert- ing input is biased to +1.5v with two resistors. this con- figuration allows a full 5v swing at the output, maximizing the noise margin of the receiving circuit. 1v to 3v figure 4 shows an application that converts 1v logic levels to 3v logic levels. the max9101 is powered by the +1v supply voltage, and the pullup resistor for the output is connected to the +3v supply voltage. the inverting input is biased to +0.5v with two resistors. chip information transistor count: 393 process: bicmos max9100 in- 232k ? 100k ? 5v logic out out v cc +5v gnd 3v logic in in+ max9101 in- 100k ? 100k ? 3v logic out out v cc +1.0v gnd 1v logic in in+ r pullup +3v figure 3. max9100 logic-level translator figure 4. max9101 logic-level translator n.c. in- n.c. v cc n.c. out in+ gnd so-8 2 3 4 1 8 7 6 5 max9100 max9101 pin configurations (continued) revision history pages changed at rev 1: 1?
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