general description the MAX44264 is an ultra-small (6-bump wlp) op amp that draws only 750na of supply current. it operates from a single +1.8v to +5.5v supply and features ground-sensing inputs and rail-to-rail output. the ultra- low supply current, low-operating voltage, and rail-to- rail output capabilities make these operational amplifiers ideal for use in single lithium ion (li+), or two- cell nicd or alkaline battery systems. the rail-to-rail out- put stage of the MAX44264 is capable of driving the output voltage to within 4mv of the rail with a 100k ? load, and can sink and source 11ma with a +5v sup- ply. the ic is unity-gain stable and available in a space-saving 0.9mm x 1.3mm, 6-bump wlp package. applications cell phones tablet/notebook computers mobile accessories battery-powered devices features ? ultra-low 750na supply current per amplifier ? ultra-low +1.8v supply voltage operation ? ground-sensing input common-mode range ? outputs swing rail-to-rail ? outputs source and sink 11ma of load current ? no phase reversal for overdriven inputs ? high 120db open-loop voltage gain ? low 500 v input offset voltage ? 9khz gain-bandwidth product ? 250pf (min) capacitive load capability ? available in a tiny, 0.9mm x 1.3mm, 6-bump wlp package MAX44264 ultra-low power op amp in a tiny 6-bump wlp ________________________________________________________________ maxim integrated products 1 19-5708; rev 0; 12/10 ordering information part temp range pin- package top mark MAX44264ewt+ -40? to +85? 6 wlp +cb for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com. + denotes a lead(pb)-free/rohs-compliant package. www.datasheet.co.kr datasheet pdf - http://www..net/
MAX44264 ultra-low power op amp in a tiny 6-bump wlp 2 _______________________________________________________________________________________ absolute maximum ratings electrical characteristics (v dd = +5v, v ss = 0v, v cm = 0v, v out = v dd /2, r l = to v dd /2, t a = +25? , unless otherwise noted.) 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. v dd to v ss ...............................................................-0.3v to +6v in_+ or in_-......................................(v ss - 0.3v) to (v dd + 0.3v) out_ shorted to v ss or v dd ......................................continuous continuous power dissipation (t a = +70?) 6-bump wlp (derate 10.5mw/? above +70?) .............840mw operating temperature range ......................... -40? to +85? junction temperature .....................................................+150? storage temperature range .............................-65? to +150? lead temperature (soldering, 10s) ................................+300? soldering temperature (reflow) ......................................+260? parameter symbol conditions min typ max units supply voltage range v dd guaranteed by psrr tests 1.8 5.5 v v dd = +1.8v 0.6 supply current (per amplifier) i dd v dd = +5.0v 0.75 1.2 ? input offset voltage v os 0.5 7.0 mv input bias current i b 200 ?500 pa input offset current i os 12.5 pa input common-mode voltage range v cm guaranteed by the cmrr test v ss v dd - 1.1 v common-mode rejection ratio cmrr specified with v ss v cm (v dd - 1.1v) 70 95 db power-supply rejection ratio psrr +1.8v v dd +5.5v 70 90 db r l = 1m ? , v out = 50mv to v dd - 50mv 90 120 r l = 100k ? , v out = 200mv to v dd - 200mv 90 112 large-signal voltage gain a vol r l = 10k ? , v out = 200mv to v dd - 200mv 100 db r l = 1m ? 14 r l = 100k ? 410 v oh swing high specified as v dd - v oh r l = 10k ? 40 r l = 1m ? 0.5 5 r l = 100k ? 15 output voltage swing v ol swing low specified as v ol - v ss r l = 10k ? 10 mv gain-bandwidth product gbw 9 khz phase margin m 90 d eg r ees www.datasheet.co.kr datasheet pdf - http://www..net/
MAX44264 ultra-low power op amp in a tiny 6-bump wlp _______________________________________________________________________________________ 3 note 1: all devices are production tested at t a = +25?. all temperature limits are guaranteed by design. electrical characteristics (continued) (v dd = +5v, v ss = 0v, v cm = 0v, v out = v dd /2, r l = to v dd /2, t a = +25? , unless otherwise noted.) parameter symbol conditions min typ max units slew rate sr v out = 4v step 2 v/ms f = 1khz 150 input voltage noise e n f = 10khz 120 nv / hz shorted to v ss (sourcing) 11 output short-circuit current shorted to v dd (sinking) 36 ma power-on time t on 2 s power-off time t off 2 ? capacitive load c load no sustained oscillations 250 pf electrical characteristics (v dd = +5v, v ss = 0v, v cm = 0v, v out = v dd /2, r l = to v dd /2, t a = t min to t max , unless otherwise noted.) (note 1) parameter symbol conditions min typ max units supply voltage range v dd guaranteed by psrr tests 1.8 5.5 v supply current (per amplifier) i dd v dd = +5.0v 1.5 ? input offset voltage v os 15 mv input offset voltage temperature coefficient tcv os 8 ?/ c input bias current i b 4.25 na input common-mode voltage range v cm guaranteed by the cmrr test v ss v dd - 1.1 v common-mode rejection ratio cmrr v ss v cm (v dd - 1.1v) 56 db +1.8v v dd +5.5v, 0 o c t a +85 o c65 power-supply rejection ratio psrr +2v v dd +5.5v, -40 o c t a +85 o c65 db v out = 50mv to v dd - 50mv, r l = 1m ? 75 large-signal voltage gain a vol v out = 200mv to v dd - 200mv, r l = 100k ? 75 db r l = 1m ? 5 v oh swing high specified as v dd - v oh r l = 100k ? 15 r l = 1m ? 5 output voltage swing v ol swing low specified as v ol - v ss r l = 100k ? 5 mv www.datasheet.co.kr datasheet pdf - http://www..net/
MAX44264 ultra-low power op amp in a tiny 6-bump wlp 4 _______________________________________________________________________________________ typical operating characteristics (v dd = +5v, v ss = 0v, v cm = 0v, r l = 100k ? to v dd /2, t a = +25?, unless otherwise noted.) 0 0.2 0.1 0.5 0.4 0.3 0.7 0.8 0.6 0.9 1.5 3.0 3.5 2.0 2.5 4.0 4.5 5.0 5.5 6.0 supply current vs. supply voltage MAX44264 toc01 supply voltage (v) supply current ( a) 0 0.2 0.1 0.5 0.4 0.3 0.7 0.8 0.6 0.9 -50 0 -25 25 50 75 100 supply current vs. temperature MAX44264 toc02 temperature ( c) supply current ( a) 0 0.10 0.05 0.30 0.20 0.25 0.15 0.40 0.45 0.35 0.50 -50 0 -25 25 50 75 100 offset voltage vs. temperature MAX44264 toc03 temperature ( c) offset voltage (mv) 0 0.10 0.05 0.20 0.15 0.30 0.25 0.35 0.45 0.40 0.50 0 1.0 1.5 0.5 2.0 2.5 3.0 3.5 4.0 offset voltage vs. common-mode voltage MAX44264 toc04 common-mode voltage (v) offset voltage (mv) -400 -350 -150 -250 -200 -300 -50 -100 0 -50 0 -25 25 50 75 100 input bias current vs. temperature MAX44264 toc05 temperature ( c) input bias current (pa) -90 -70 -80 -40 -50 -60 -20 -10 -30 0 01.5 1.0 0.5 2.0 2.5 3.0 3.5 4.0 input bias current vs. common-mode voltage MAX44264 toc06 common-mode voltage (v) input bias current (pa) 0 -100 10 100 10k 1k power-supply rejection ratio vs. frequency -80 -90 MAX44264 toc07 frequency (hz) psrr (db) -60 -70 -40 -30 -50 -20 -10 0 0.2 1.0 0.6 0.8 0.4 1.4 1.2 1.6 -50 0 -25 25 50 75 100 output voltage swing low vs. temperature MAX44264 toc08 temperature ( c) v ol - v ss (mv) r l = 100k ? r l = 1m ? 0 1 4 2 3 5 6 -50 0 -25 25 50 75 100 output voltage swing high vs. temperature MAX44264 toc09 temperature ( c) v dd - v oh (mv) r l = 100k ? r l = 1m ? www.datasheet.co.kr datasheet pdf - http://www..net/
MAX44264 single/dual/quad, +1.8v/750na, sc70, rail-to-rail op amps _______________________________________________________________________________________ 5 -120 -100 -110 -60 -80 -70 -90 -40 -30 -50 -20 -50 0 -25 25 50 75 100 common-mode rejection ratio vs. temperature MAX44264 toc10 temperature ( c) cmrr (db) 0 0.4 0.2 0.8 0.6 1.2 1.0 1.4 -50 0 25 -25 50 75 100 minimum supply voltage vs. temperature MAX44264 toc11 temperature ( c) minimum supply voltage (v) 60 70 80 90 100 110 120 130 140 2.5 3.0 3.5 4.0 4.5 5.0 a vol vs. output voltage swing MAX44264 toc12 output voltage (vp-p) a vol (db) r l = 1m ? r l = 10k ? r l = 100k ? 1 100 1k 10k 10 100k gain and phase vs. frequency MAX44264 toc13 frequency (hz) gain (db) phase (deg) 80 70 60 50 40 30 20 -60 10 0 -10 -20 -30 -40 -50 180 135 90 45 -135 0 -45 -90 gain phase c l = 12pf r l = 1m ? a vcl = 1000v/v 1 100 1k 10k 10 100k gain and phase vs. frequency MAX44264 toc14 gain (db) phase (deg) 80 70 60 50 40 30 20 -60 10 0 -10 -20 -30 -40 -50 180 135 90 45 -135 0 -45 -90 gain phase r l = 1m ? a vcl = 1000v/v c l = 250pf 10.00 0.01 10 100 10k 1k total harmonic distortion plus noise vs. frequency MAX44264 toc15 frequency (hz) thd + n (%) 0.10 1.00 10k 10 10 1k 100 100k 10k voltage noise density vs. frequency MAX44264 toc16 frequency (hz) 100 1k noise (nv/ hz) 100k 100 10k 100k 1m stability vs. capacitive and resistive loads MAX44264 toc17 resistive load ( ? ) 1k 10k capacitive load (pf) unstable region 0 12 8 4 16 20 24 28 32 36 40 02 1345 i out vs. v out MAX44264 toc18 v out (v) i out (ma) i sink i source typical operating characteristics (continued) (v dd = +5v, v ss = 0v, v cm = 0v, r l = 100k ? to v dd /2, t a = +25?, unless otherwise noted.) www.datasheet.co.kr datasheet pdf - http://www..net/
500 s/div small-signal step response input 50mv/div output 50mv/div MAX44264 toc21 v dd = +5v a v = +1v/v r l = 1m ? c l = 1000pf 500 s/div large-signal step response v dd = +5v a v = +1v/v r l = 1m ? c l = 12pf input 500mv/div output 500mv/div MAX44264 toc22 500 s/div large-signal step response input 500mv/div output 500mv/div MAX44264 toc23 v dd = +5v a v = +1v/v r l = 1m ? c l = 1000pf 0 5 20 10 15 25 30 0100 50 150 200 250 300 percent overshoot vs. capacitive load MAX44264 toc24 c load (pf) percent overshoot (%) r l = 10k ? r l = 100k ? r l = 1m ? 3 -7 100 1k 10k small-signal gain vs. frequency -5 -6 MAX44264 toc25 frequency (hz) gain (db) -3 -4 -1 0 -2 1 2 r l = 10k ? v out = 100mv p-p c l = 12pf a v = 1 3 -7 100 1k 100k 10k small-signal gain vs. frequency -5 -6 MAX44264 toc26 frequency (hz) gain (db) -3 -4 -1 0 -2 1 2 a v = 1 r l = 100k ? v out = 100mv p-p c l = 12pf MAX44264 ultra-low power op amp in a tiny 6-bump wlp 6 _______________________________________________________________________________________ 500 s/div small-signal step response v dd = +5v a v = +1v/v r l = 1m ? c l = 12pf input 500mv/div output 500mv/div MAX44264 toc19 500 s/div small-signal step response input 50mv/div output 50mv/div MAX44264 toc20 v dd = +5v a v = +1v/v r l = 1m ? c l = 250pf typical operating characteristics (continued) (v dd = +5v, v ss = 0v, v cm = 0v, r l = 100k ? to v dd /2, t a = +25?, unless otherwise noted.) www.datasheet.co.kr datasheet pdf - http://www..net/
MAX44264 3 -7 100 1k 10k 100k small-signal gain vs. frequency -5 MAX44264 toc27 frequency (hz) gain (db) -3 -1 1 2 -6 -4 -2 0 a v = 1 r l = 1m ? v out = 100mv p-p c l = 12pf ultra-low power op amp in a tiny 6-bump wlp _______________________________________________________________________________________ 7 typical operating characteristics (continued) (v dd = +5v, v ss = 0v, v cm = 0v, r l = 100k ? to v dd /2, t a = +25?, unless otherwise noted.) 3 -7 100 1k 10k large-signal gain vs. frequency -5 -6 MAX44264 toc28 frequency (hz) gain (db) -3 -4 -1 0 -2 1 2 a v = 1 r l = 10k ? v out = 1v p-p c l = 12pf 3 -7 100 1k 10k large-signal gain vs. frequency -5 -6 MAX44264 toc29 frequency (hz) gain (db) -3 -4 -1 0 -2 1 2 a v = 1 r l = 100k ? v out = 1v p-p c l = 12pf 3 -7 100 1k 10k large-signal gain vs. frequency -5 -6 MAX44264 toc30 frequency (hz) gain (db) -3 -4 -1 0 -2 1 2 a v = 1 r l = 1m ? v out = 1v p-p c l = 12pf www.datasheet.co.kr datasheet pdf - http://www..net/
MAX44264 ultra-low power op amp in a tiny 6-bump wlp 8 _______________________________________________________________________________________ applications information ground sensing the common-mode input range of the MAX44264 extends down to ground, and offers excellent common- mode rejection. these devices are guaranteed not to undergo phase reversal when the input is overdriven. power supplies and layout the ic operates from a single +1.8v to +5.5v power supply. bypass power supplies with a 0.1? ceramic capacitor placed close to the v dd pin. ground layout improves performance by decreasing the amount of stray capacitance and noise at the op amp? inputs and outputs. to decrease stray capacitance, mini- mize pcb lengths and resistor leads, and place external components close to the op amps?pins. bandwidth the ic is internally compensated for unity-gain stability and has a typical gain-bandwidth of 9khz. stability the ic maintains stability in their minimum gain configu- ration while driving capacitive loads. although this prod- uct family is primarily designed for low-frequency applications, good layout is extremely important because low-power requirements demand high-imped- ance circuits. the layout should also minimize stray capacitance at the amplifier inputs. however some stray capacitance may be unavoidable, and it may be neces- sary to add a 2pf to 10pf capacitor across the feedback resistor as shown in figure 1. select the smallest capaci- tor value that ensures stability. pin description pin name function a1 in+ noninverting amplifier input a2 v ss negative power-supply voltage b1 in- inverting amplifier input b2 v dd positive power-supply voltage c1 out amplifier output c2 n.c. no connection. not internally connected. r1 2pf to 10pf r2 v in v cc v ss MAX44264 figure 1. compensation for feedback node capacitance chip information process: bicmos wlp bump side down out n.c. in- v dd in+ v ss c1 c2 b1 b2 a2 a1 + top view MAX44264 pin configuration www.datasheet.co.kr datasheet pdf - http://www..net/
MAX44264 ultra-low power op amp in a tiny 6-bump wlp _______________________________________________________________________________________ 9 package information for the latest package outline information and land patterns, go to www.maxim-ic.com/packages . note that a ?? ?? or ??in the package code indicates rohs status only. package drawings may show a different suffix character, but the drawing pertains to th e package regardless of rohs status. package type package code outline no. land pattern no. 6 wlp w61b1+1 21-0217 www.datasheet.co.kr datasheet pdf - http://www..net/
MAX44264 ultra-low power op amp in a tiny 6-bump wlp 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. 10 ____________________maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 2010 maxim integrated products maxim is a registered trademark of maxim integrated products, inc. revision history revision number revision date description pages changed 0 12/10 initial release www.datasheet.co.kr datasheet pdf - http://www..net/
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