_______________________________________________________________ maxim integrated products 1 for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxims website at www.maxim-ic.com. high-efficiency, 1.5mhz op amps with rrio MAX9617/max9618 general description the MAX9617/max9618 are low-power, zero-drift opera - tional amplifiers, designed for use in portable consumer, medical, and industrial applications. the MAX9617/max9618 feature rail-to-rail cmos inputs and outputs, a 1.5mhz gbw at just 59 f a supply current and 10 f v (max) zero-drift input offset voltage over time and temperature. the zero-drift feature of the MAX9617/ max9618 reduces the high 1/f noise typically found in cmos input operational amplifiers, making it useful for a wide variety of low-frequency measurement applications. the MAX9617 is available in a space-saving, 2mm x 2mm, 6-pin sc70 package. the max9618 is available in a 2mm x 2mm, 8-pin sc70 package. all devices are specified over the -40 n c to +125 n c automotive operating temperature range. applications sensor interfaces loop-powered systems po rtable medical devices battery-powered devices cardiac monitors features s low 59a quiescent current s very-low 10v (max) input offset voltage s low input noise 42nv/ hz at 1khz 1v p-p from 0.1hz to 10hz s rail-to-rail inputs and outputs s 1.5mhz gbw s ultra-low 10pa input bias current s single 1.8v to 5.5v supply voltage range s unity-gain stable s available in tiny 6-pin sc70 (MAX9617) and 8-pin sc70 (max9618) packages 19-4753; rev 1; 9/09 functional diagrams ordering information + denotes a lead(pb)-free /rohs-compliant package. * future productcontact factory for availability. evaluation kit available top view MAX9617 in- gnd 1 2 in+ 3 out 6 5 v dd v dd 4 max9618 gnd ina- ina+ 1 2 outa 4 inb+ outb inb- 8 7 v dd 5 3 6 + - + - - + part temp range pin-package MAX9617 axt+ -40 n c to +125 n c 6 sc70 max9618 axa+* -40 n c to +125 n c 8 sc70
high-efficiency, 1.5mhz op amps with rrio MAX9617/max9618 2 ______________________________________________________________________________________ stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. supply voltage (v dd to gnd) ................................. -0.3v to +6v all other pins, in+ to in- ............. (gnd - 0.3v) to (v dd + 0.3v) short-circuit duration to either supply rail, out, outa, outb ............................................................ 10s continuous input current (any pins) ............................... 20ma continuous power dissipation (t a = +70 n c) 6-pin sc70 (derate 3.1mw/ n c above +70 n c) .......... 245.4mw 8-pin sc70 (derate 3.1mw/ n c above +70 n c) ............. 245mw operating temperature range ........................ -40 n c to +125 n c junction temperature ..................................................... +150 n c storage temperature range ............................ -65 n c to +150 n c lead temperature (soldering, 10s) ................................ +300 n c electrical characteristics (v dd = +3.3v, v gnd = 0v, v in+ = v in- = v dd /2, r l = 100k i to v dd /2, t a = -40 n c to +125 n c, unless otherwise noted. typical values are at +25 n c.) (note 1) absolute maximum ratings parameter symbol conditions min typ max units power supply supply voltage range v dd guaranteed by psrr, 0 n c p t a p +70 n c 1.6 5.5 v guaranteed by psrr, -40 n c p t a p +125 n c 1.8 5.5 supply current (per amplifier) i dd t a = +25 n c 59 78 f a -40 n c p t a p +125 n c 111 power-supply rejection ratio (note 2) psrr v dd = 1.8v to 5.5v t a = +25 n c 119 135 db -40 n c p t a p +125 n c 107 0 n c p t a p +70 n c, v dd = 1.6v to 5.5v 116 135 power-up time t on v dd = 0 to 3v step, a v = 1v/v 20 f s dc specifications input offset voltage (note 2) v os t a = +25 n c 0.8 10 f v -40 n c p t a p +125 n c 25 input offset voltage drift (note 2) d v os 5 120 nv/ n c input bias current (note 2) i b t a =+25 n c 0.01 0.14 na -40 n c p t a p +125 n c 3.5 input offset current i os 0.005 input common-mode range v cm guaranteed by cmrr test t a = +25 n c -0.1 v dd + 0.1 v -40 n c p t a p +125 n c -0.1 v dd + 0.05 common-mode rejection ratio (note 2) cmrr -0.1v p v cm p v dd + 0.1v, t a = +25 n c 122 135 db -0.1v p v cm p v dd + 0.05v, -40 n c p t a p +125 n c 116 open-loop gain (note 2) av ol 20mv p v out p v dd - 20mv, r l = 100k i to v dd /2 120 138 db 150mv p v out p v dd - 150mv, r l = 5k i to v dd /2 123 160
high-efficiency, 1.5mhz op amps with rrio MAX9617/max9618 _______________________________________________________________________________________ 3 electrical characteristics (continued) (v dd = +3.3v, v gnd = 0v, v in+ = v in- = v dd /2, r l = 100k i to v dd /2, t a = -40 n c to +125 n c, unless otherwise noted. typical values are at +25 n c.) (note 1) note 1: specifications are 100% tested at t a = +25 n c (exceptions noted). all temperature limits are guaranteed by design. note 2: guaranteed by design. typical operating characteristics (v dd = +3.3v, v gnd = 0v, outputs have r l = 100k i connected to v dd /2. t a = +25 n c, unless otherwise specified.) offset voltage histogram MAX9617 toc01 offset voltage (fv) frequency (%) 4 3 2 1 5 10 15 20 25 0 0 input offset voltage drift histogram MAX9617 toc02 offset voltage drift ( fv/nc) frequency (%) 0.01 0.02 0.03 0.04 -0.02 -0.01 0 2 4 6 8 10 12 14 16 18 20 0 -0.03 parameter symbol conditions min typ max units input resistance r in differential 50 m i common mode 200 output-voltage swing v oh v dd - v out r l = 100k i to v dd /2 12 mv r l = 5k i to v dd /2 22 r l = 600 i to v dd /2 50 v ol v out r l = 100k i to v dd /2 11 r l = 5k i to v dd /2 18 r l = 600 i to v dd /2 50 short-circuit current i sc 150 ma ac specifications gain-bandwidth product gbwp 1.5 mhz slew rate sr 0v p v out p 2v 0.7 v/ f s input voltage-noise density e n f = 1khz 42 nv/ hz input voltage noise 0.1hz p f p 10hz 1 f v p-p input current-noise density i n f = 1khz 100 fa/ hz phase margin c l = 20pf 60 degrees capacitive loading c l no sustained oscillation, a v = 1v/v 400 pf crosstalk f = 10khz (max9618) -100 db
high-efficiency, 1.5mhz op amps with rrio MAX9617/max9618 4 ______________________________________________________________________________________ typical operating characteristics (continued) (v dd = +3.3v, v gnd = 0v, outputs have r l = 100k i connected to v dd /2. t a = +25 n c, unless otherwise specified.) supply current vs. supply voltage MAX9617 toc03 supply voltage (v) supply current (fa) 5.1 4.6 4.1 3.6 3.1 2.6 2.1 20 40 60 80 100 120 0 1.6 5.6 t a = +125 n c t a = +25 n c t a = -40 n c supply current vs. temperature MAX9617 toc04 temperature ( n c) supply current (fa) 100 75 25 50 0 -25 10 20 30 40 50 60 70 80 90 100 0 -50 125 input offset voltage vs. input common mode MAX9617 toc05 input common mode (v) v os (fv) 2.9 2.4 1.9 1.4 0.9 0.4 1 2 3 4 5 6 0 -0.1 3.4 t a = -40nc t a = +25nc t a = +125nc input offset voltage vs. temperature MAX9617 toc06 temperature ( n c) v os (fv) 100 75 50 25 0 -25 1 2 3 4 5 6 0 -50 125 input bias current vs. input common mode MAX9617 toc07 input common mode (v) input bias current (pa) 2.9 2.4 1.9 1.4 0.9 0.4 50 100 150 200 250 300 0 -0.1 3.4 noninverting input inverting input common-mode rejection ratio vs. frequency MAX9617 toc08 frequency (hz) cmrr (db) 1m 100k 10k 1k 100 10 1 20 40 60 80 100 120 140 0 0.1 10m common-mode rejection ratio vs. temperature MAX9617 toc09 temperature (nc) cmrr (db) 100 75 50 25 0 -25 60 80 100 120 140 40 -50 125 power-supply rejection ratio vs. frequency MAX9617 toc10 frequency (hz) psrr (db) 1m 100k 10k 1k 100 10 1 20 40 60 80 100 120 140 0 0.1 10m output-voltage swing high vs. temperature MAX9617 toc11 temperature ( n c) v oh (mv) 100 75 25 50 0 -25 0.22 0.24 0.26 0.28 0.30 0.32 0.34 0.36 0.38 0.40 0.20 -50 125
high-efficiency, 1.5mhz op amps with rrio MAX9617/max9618 _______________________________________________________________________________________ 5 typical operating characteristics (continued) (v dd = +3.3v, v gnd = 0v, outputs have r l = 100k i connected to v dd /2. t a = +25 n c, unless otherwise specified.) output-voltage swing low vs. temperature MAX9617 toc12 temperature ( n c) v ol (mv) 100 75 25 50 0 -25 0.22 0.24 0.26 0.28 0.30 0.32 0.34 0.36 0.38 0.40 0.20 -50 125 open-loop gain vs. frequency MAX9617 toc13 frequency (hz) open loop gain (db) 100k 10k 100 1k 1 1 0 100m -20 0 20 40 60 80 100 120 140 160 -40 -10m 1m 10m input voltage noise vs. frequency MAX9617 toc14 frequency (hz) input voltage noise (nv/hz) 10k 1k 100 10 1 100 1000 10,000 10 0.1 100k input voltage 0.1hz to 10hz noise MAX9617 toc15 0.1fv/div 1s/div input current noise vs. frequency MAX9617 toc16 frequency (hz) input current noise (fa/hz) 1 1 0 100 1k 100 1000 10 0.1 10k small-signal gain vs. frequency MAX9617 toc17 frequency (khz) small-signal gain (db) 1m 100k 100 1k 10k -30 -25 -20 -15 -10 -5 0 5 -35 10 10m 100mv p-p large-signal gain vs. frequency MAX9617 toc18 frequency (khz) large-signal gain (db) 1m 100k 10k 1k 100 -40 -30 -20 -10 0 10 -50 10 10m 2v p-p MAX9617 toc19 50mv/div 100fs/div small-signal step response vs. time 100mv p-p
high-efficiency, 1.5mhz op amps with rrio MAX9617/max9618 6 ______________________________________________________________________________________ typical operating characteristics (continued) (v dd = +3.3v, v gnd = 0v, outputs have r l = 100k i connected to v dd /2. t a = +25 n c, unless otherwise specified.) pin description capacitive load vs. isolation resistor MAX9617 toc21 isolation resistor ( i) capacitence (pf) 100 10 1 100 1000 10,000 0.1 1000 v in = 100mv p-p a v = 1v/v unstable pin name function MAX9617 max9618 1 in+ positive input 2 4 gnd ground 3 in- negative input 4 out output 5, 6 8 v dd positive supply voltage. bypass to gnd with a 0.1 f f capacitor. 1 outa channel a output 2 ina- channel a negative input 3 ina+ channel a positive input 5 inb+ channel b positive input 6 inb- channel b negative input 7 outb channel b output MAX9617 toc20 500mv/div 100fs/div large-signal step response vs. time 100mv p-p pin configurations sc70 top view MAX9617 in- gnd 1 2 in+ 3 out 6 5 v dd v dd 4 + sc70 max9618 gnd ina- ina+ 1 2 outa 4 inb+ outb inb- 8 7 v dd 5 3 6 +
high-efficiency, 1.5mhz op amps with rrio MAX9617/max9618 _______________________________________________________________________________________ 7 detailed description the MAX9617 (single) and max9618 (dual) are preci - sion, low-power op amps ideal for signal processing applications. these devices use an innovative autozero technique that allows precision and low noise with a minimum amount of power. the low input offset voltage, cmos inputs, and the absence of 1/f noise allows for optimization of active filter designs. the MAX9617/max9618 achieve rail-to-rail performance at the input through the use of a low-noise charge pump. this ensures a glitch-free, common-mode input voltage range extending from the negative supply rail up to the positive supply rail, eliminating crossover distortion common to traditional n-channel/p-channel cmos pair inputs, reducing harmonic distortion at the output. autozero the MAX9617/max9618 feature an autozero circuit that allows the device to achieve less than 10 f v (max) of input offset voltage and eliminates the 1/f noise. internal charge pump an internal charge pump provides an internal supply typi - cally 1v beyond the upper rail. this internal rail allows the MAX9617/max9618 to achieve true rail-to-rail inputs and outputs, while providing excellent common-mode rejec - tion, power-supply rejection ratios, and gain linearity. the charge pump requires no external components, and in most applications is entirely transparent to the user. the operating frequency is well beyond the unity-gain frequency of the amplifier, avoiding aliasing or other sig - nal integrity issues in sensitive applications. applications information the MAX9617/max9618 low-power, low-noise, and pre - cision operational amplifiers are designed for applica - tions in the portable medical, such as ecg and pulse oximetry, portable consumer, and industrial markets. the MAX9617/max9618 are also ideal for loop-powered systems that interface with pressure sensors or strain gauges. capacitive-load stability driving large capacitive loads can cause instability in many op amps. the MAX9617/max9618 are stable with capacitive loads up to 400pf. stability with higher capacitive loads can be improved by adding an isolation resistor in series with the op-amp output. this resistor improves the circuits phase margin by isolating the load capacitor from the amplifiers output. the graph in the typical operating characteristics gives the stable oper - ation region for capacitive load versus isolation resistors. power supplies and layout the MAX9617/max9618 operate either with a single sup - ply from +1.6v to +5.5v with respect to ground or with dual supplies from q 0.8v to q 2.75v. when used with dual supplies, bypass both supplies with their own 0.1 f f capacitor to ground. when used with a single supply, bypass v dd with a 0.1 f f capacitor to ground. careful layout technique helps optimize performance by decreasing the amount of stray capacitance at the op amps inputs and outputs. to decrease stray capaci - tance, minimize trace lengths by placing external com - ponents close to the op amps pins. figure 1. typical application circuit: sallen-key active lowpass filter chip information process: bicmos MAX9617 adc +5v v in
high-efficiency, 1.5mhz op amps with rrio MAX9617/max9618 8 ______________________________________________________________________________________ package type package code document no. 6 sc70 x6sn-1 21-0077 8 sc70 x8c+1 21-0460 package information for the latest package outline information and land patterns, go to www.maxim-ic.com/packages . sc70, 6l.eps
high-efficiency, 1.5mhz op amps with rrio MAX9617/max9618 _______________________________________________________________________________________ 9 package information (continued) for the latest package outline information and land patterns, go to www.maxim-ic.com/packages .
high-efficiency, 1.5mhz op amps with rrio MAX9617/max9618 maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circuit 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 ? 2009 maxim integrated products maxim is a registered trademark of maxim integrated products, inc. revision history revision number revision date description pages changed 0 7/09 initial release 1 9/09 removed references to MAX9617 shutdown functionality 1, 2, 3, 6, 7
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