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_______________________________________________________________ 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. MAX9614/max9616 low-power single/dual, rail-to-rail op amps 19-5302; rev 0; 8/10 typical application circuit general description the MAX9614/max9616 are low-power precision op amps that feature precision mos inputs. these devices are ideal for a large number of signal pro- cessing applications such as photodiode transimped- ance amplifiers and filtering/amplification of a wide variety of signals in industrial equipment. the devices also feature excellent rf immunity, making them ideal for portable applications. the MAX9614/max9616 are capable of operating from a 2.5v to 5.5v supply voltage over the -40 n c to +125nc automotive temperature range. both singles and duals are available in tiny sc70 pack- ages. the MAX9614 features an active-low shutdown pin. applications notebooks, portable media players industrial and medical sensors general purpose signal processing features s v cc = 2.5v to 5.5v (-40c to +125c) s low 100v (max) v os s 1a supply current in shutdown, 175a o perating s small sc70 package s 2.8mhz bandwidth s excellent rf immunity + denotes lead(pb)-free/rohs-compliant package. t = tape and reel. ordering information part temp range pin- package top mark MAX9614axt+t -40nc to +125nc 6 sc70 +adl max9616axa+t -40nc to +125nc 8 sc70 +aae v cc v cc /2 20ki 100nf input 1.21ki 20ki MAX9614 max11613 66.5ki 66.5ki 220pf adc 121ki using the MAX9614 output amplifier as an anti-aliasing filter (corner frequency = 1.3khz) to maximize nyquist bandwidth. 4.7nf
2 ______________________________________________________________________________________ MAX9614/max9616 low-power single/dual, rail-to-rail op amps 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. in+, in-, shdn , v cc to gnd..................................-0.3v to +6v out to gnd ................................................-0.3v to v cc + 0.3v short-circuit (gnd) duration, out, outa, outb ................. 5s continuous input current (any pin) ................................. q 20ma thermal limits (note 1) multilayer pcb continuous power dissipation (t a = +70 nc) 6-pin sc70 (derate 3.1mw/ n c above +70nc) .............245mw b ja .......................................................................326.5 nc/w b jc ..........................................................................115 nc/w 8-pin sc70 (derate 3.1mw/ n c above +70nc) .............245mw b ja .......................................................................... 326 nc/w b jc ..........................................................................115 nc/w operating temperature range ........................ -40 n c to +125nc junction temperature .....................................................+150 nc lead temperature (soldering, 10s) ................................+300 nc soldering temperature (reflow) ......................................+240 nc electrical characteristics (v cc = v shdn = 3.3v, v in+ = v in- = v cm = gnd, r l = 10k i to v cc /2, t a = -40 n c to +125n c. typical values are at t a = +25 nc, unless otherwise noted.) (note 2) absolute maximum ratings note 1: package thermal resistances were obtained using the method described in jedec specification jesd51-7, using a 4-layer board. for detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial. parameter symbol conditions min typ max units dc characteristics input voltage range v in+ , v in- guaranteed by cmrr test -0.1 v cc - 1.4 v input offset voltage v os t a = +25nc 17 100 fv t a = -40nc to +125nc, after power-up autocalibration 165 t a = -40nc to +125nc 750 input offset voltage drift v os - tc 1 7.5 fv/nc input bias current (note 3) i b t a = -40nc to +25c 1 1.55 pa t a = +70nc 45 t a = +85nc 135 t a = +125nc 1.55 na input offset current (note 3) i os t a = -40nc to +25c 0.5 pa t a = +70nc 7 t a = +85nc 25 t a = +125nc 4000 common-mode rejection ratio cmrr v cm = -0.1v to v cc - 1.4v, t a = +25nc 80 95 db v cm = -0.1v to v cc - 1.4v, t a = -40nc to +125nc 78 open-loop gain a ol +0.4v p v out p v cc - 0.4v, r l = 10ki 99 115 db +0.4v p v out p v cc - 0.4v, r l = 600i 93 110 output short-circuit current (note 4) i sc to v cc 275 ma to gnd 75 output voltage low v ol r l = 10ki 1 11 mv r l = 600i 11 100 r l = 32i 170
_______________________________________________________________________________________ 3 MAX9614/max9616 low-power single/dual, rail-to-rail op amps electrical characteristics (continued) (v cc = v shdn = 3.3v, v in+ = v in- = v cm = gnd, r l = 10k i to v cc /2, t a = -40 n c to +125n c. typical values are at t a = +25 nc, unless otherwise noted.) (note 2) note 2: all devices are 100% production tested at t a = +25 n c. temperature limits are guaranteed by design. note 3: guaranteed by design, not production tested. note 4: do not exceeed package thermal dissipation in the absolute maximum ratings section. parameter symbol conditions min typ max units output voltage high v oh r l = 10ki v cc - 11 v cc - 2 mv r l = 600i v cc - 100 v cc - 30 r l = 32i v cc - 560 ac characteristics input voltage noise density e n f = 10khz 28 nv/hz input voltage noise total noise 0.1hz p f p 10hz 5 fv p-p input current noise density i n f = 10khz 0.1 fa/hz gain bandwidth gbw 2.8 mhz slew rate sr 1.3 v/fs capacitive loading c load no sustained oscillation 200 pf total harmonic distortion thd f = 10khz, v out = 2v p-p , a v = 1v/v -85 db power-supply characteristics power-supply range v cc guaranteed by psrr 2.5 5.5 v power-supply rejection ratio psrr t a = +25nc 85 106 db t a = -40nc to +125nc 83 quiescent current i cc t a = +25nc, per amplifier 170 255 fa t a = -40nc to +125nc, per amplifier 350 shutdown supply current i shdn MAX9614 only 1 fa shutdown input low v il MAX9614 only 0.5 v shutdown input high v ih MAX9614 only 1.4 v output impedance in shutdown r out_shdn MAX9614 only 10 mi turn-on time from shdn t on MAX9614 only 20 fs power-up time t up 10 ms
4 ______________________________________________________________________________________ MAX9614/max9616 low-power single/dual, rail-to-rail op amps typical operating characteristics (v cc = 3.3v, v in+ = v i n- = 0v, v cm = v cc /2, r l = 10ki to v cc /2, values are at t a = +25nc, unless otherwise noted.) input bias current vs. common-mode voltage MAX9614 toc07 common-mode voltage (v) input bias current (pa) 3.5 3.0 2.0 2.5 1.0 1.5 0.5 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1.0 -1.0 0 4.0 t a = +25c input bias current vs. temperature MAX9614 toc08 temperature (c) input bias current (pa) 100 75 50 25 0 -25 0.1 1 10 100 0.01 -50 125 v cm = 0v power-up transient mMAX9614-16 toc09 v out 200mv/div v cc 2v/div gnd gnd 4ms/div supply current vs. supply voltage MAX9614 toc04 supply voltage (v) supply current (a) 5.5 5.0 4.5 4.0 3.5 3.0 50 100 150 200 250 300 0 2.5 6.0 t a = +125c t a = +25c t a = +85c t a = -40c supply current vs. temperature MAX9614 toc05 temperature (c) 100 75 50 25 0 -25 -50 125 supply current (a) 50 100 150 200 250 300 0 r load = no load input bias current vs. common-mode voltage MAX9614 toc06 common-mode voltage (v) input bias current (pa) 2.5 2.0 1.5 1.0 0.5 0.1 1 10 100 1000 10,000 0.01 0 3.0 t a = +125c t a = +85c t a = +25c t a = -40c t a = 0c offset voltage vs. common-mode voltage MAX9614 toc01 common-mode voltage (v) offset voltage (v) 2.0 1.5 1.0 0.5 0 -50 0 50 100 150 200 t a = +125c t a = +25c t a = +85c t a = -40c 250 -100 -0.5 2.5 offset voltage vs. supply voltage MAX9614 toc02 supply voltage (v) offset voltage (v) 5.0 4.5 4.0 3.5 3.0 2.5 2.0 10 20 30 40 50 60 0 1.5 5.5 offset voltage histogram MAX9614 toc03 offset voltage (v) occurance (%) 5040 10 20 30 5 10 15 20 25 30 35 40 0 0 60
_______________________________________________________________________________________ 5 MAX9614/max9616 low-power single/dual, rail-to-rail op amps typical operating characteristics (continued) (v cc = 3.3v, v in+ = v i n- = 0v, v cm = v cc /2, r l = 10ki to v cc /2, values are at t a = +25nc, unless otherwise noted.) common-mode rejection ratio vs. frequency MAX9614 toc10 frequency (khz) common-mode rejection ratio (db) 10001001010.1 10 20 30 40 50 60 70 80 90 100 0 0.01 10,000 power-supply rejection ratio vs. frequency MAX9614-16 toc11 frequency (khz) power-supply rejection ratio (db) 10001001010.10.01 20 40 60 80 100 120 0 0.001 10,000 input voltage noise vs. frequency MAX9614 toc12 frequency (hz) input voltage noise (nv/ hz) 10k 1k 10 20 30 40 50 60 70 80 90 100 0 100 100k input current noise vs. frequency MAX9614-16 toc13 frequency (hz) input current noise (fa/hz) 10k 1k 100 0.05 0.10 0.15 0.20 0.25 0.30 0 10 100k recovery from shutdown MAX9614-16 toc14 v out 200mv/div v cc 2v/div gnd gnd 10s/div total harmonic distortion MAX9614 toc15 frequency (hz) total harmonic distortion (db) 10k 1k 100 -110 -100 -90 -80 -70 -60 -120 10 100k v in = 2v p-p a v = 1v/v total harmonic distortion plus noise MAX9614-16 toc16 frequency (hz) total harmonic distortion plus noise (db) 10k 1k 100 -100 -80 -60 -40 -20 0 -120 10 100k v in = 2v p-p a v = 1v/v output high voltage vs. output source current MAX9614-16 toc17 output source current (ma) output high voltage (v) 25 20 15 10 5 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 2.4 0 30 t a = -40c t a = +25c t a = +85c t a = +125c output low voltage vs. output sink current MAX9614-16 toc18 output sink current (ma) output low voltage (v) 25 20 15 10 5 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16 0.18 0 0 30 t a = +125c t a = +85c t a = -40c t a = +25c
6 ______________________________________________________________________________________ MAX9614/max9616 low-power single/dual, rail-to-rail op amps typical operating characteristics (continued) (v cc = 3.3v, v in+ = v i n- = 0v, v cm = v cc /2, r l = 10ki to v cc /2, values are at t a = +25nc, unless otherwise noted.) recovery from saturation output saturated to gnd MAX9614-16 toc25 v out 500mv/div v in 50mv/div gnd gnd 10s/div a v = 10v/v 0.1hz to 10hz noise MAX9614 toc19 v out 1v/div open-loop gain vs. frequency MAX9614-16 toc20 frequency (khz) open-loop gain (db) 10001001010.10.01 20 40 60 80 100 120 0 0.001 10,000 stability vs. capacitive and resistive load in parallel MAX9614 toc21 capacitive load (pf) resistive load (ki) 900 800 700 600 500 400 300 200 100 2 4 6 8 10 12 14 0 0 1000 unstable stable stability vs. capacitive with series isolation resistor MAX9614-16 toc22 capacitive load (pf) resistive load (i) 1000 800 200 400 600 10 20 30 40 50 60 70 80 0 0 1200 unstable stable 100mv step response c load = 200pf MAX9614-16 toc23 v out 50mv/div v in 50mv/div gnd gnd 1s/div 2v step response c load = 200pf MAX9614-16 toc24 v out 1v/div v in 1v/div gnd gnd 4s/div
_______________________________________________________________________________________ 7 MAX9614/max9616 low-power single/dual, rail-to-rail op amps pin description pin configuration typical operating characteristics (continued) (v cc = 3.3v, v in+ = v i n- = 0v, v cm = v cc /2, r l = 10ki to v cc /2, values are at t a = +25nc, unless otherwise noted.) recovery from saturation output saturated to v cc MAX9614-16 toc26 v out 1v/div v in 1v/div gnd gnd 10s/div a v = 10v/v no phase reversal MAX9614 toc28 v in 1v/div v out 1v/div 200s/div output impedance vs. frequency MAX9614-16 toc27 frequency (khz) resistance (i) 10001001010.1 5 10 15 20 25 0 0 10,000 6 sc70 top view not to scale MAX9614 in- 1 2 gnd in+ 3 out 6 5 v cc shdn 4 + 8 sc70 max9616 ina+ ina- outa inb- inb+ v cc outb 8 7 6 5 1 2 3 gnd 4 + pin name function MAX9614 max9616 1 in+ positive input 3 ina+ positive input a 5 inb+ positive input b 2 4 gnd ground 3 in- negative input 2 ina- negative input a 6 inb- negative input b 4 out output 1 outa output a 7 outb output b 5 shdn active-low shutdown 6 8 v cc positive power supply. bypass with a 0.1ff capacitor to ground.
8 ______________________________________________________________________________________ MAX9614/max9616 low-power single/dual, rail-to-rail op amps detailed description the MAX9614/max9616 are low-power op amps ideal for signal processing applications due to the devices high precision and cmos inputs. the MAX9614 also features a low-power shutdown mode that greatly reduces quiescent current while the device is not operational. the MAX9614/max9616 self-calibrate on power-up to elim- inate effects of temperature and power-supply variation. rf immunity the MAX9614/max9616 feature robust internal emi filters that reduce the devices susceptibility to high-frequency rf signals such as from wireless and mobile devices. this, combined with excellent dc and ac specifications, makes these devices ideal for a wide variety of portable audio and sensitive signal-conditioning applications. applications information power-up autotrim the MAX9614/max9616 feature an automatic power-up autotrim that self-calibrates the v os of these devices to less than 100 f v of input offset voltage. the autotrim sequence takes approximately 10ms to complete, and is triggered by an internal power-on reset (por) circuitry. during this time, the inputs and outputs are put into high impedance and left unconnected. this self-calibration feature allows the device to eliminate input offset voltage effects due to power supply and operating temperature variation simply by cycling its power. take care to ensure that the power supply settles within 0.4ms of power-up after it crosses a por threshold of 0.5v to ensure that a stable power supply is present when it steps through its autotrim sequence. if the power supply glitches below the 0.5v threshold, the por cir- cuitry reactivates during next power-up. shutdown operation the MAX9614 features an active-low shutdown mode that puts both inputs and outputs into a high-impedance state. in this mode, the quiescent current is less than 1f a. putting the output in high-impedance allows mul- tiple signal outputs to be multiplexed onto a single output line without the additional external buffers. the device does not self-calibrate when exiting shutdown mode, and retains its power-up trim settings. the device also instantly recovers from shutdown. the shutdown logic levels of the device are independent of supply allowing the shutdown to operate by either a 1.8v or 3.3v microcontroller. interfacing with the max11613 the max9616 dual amplifiers low power and tiny size is ideal for driving multichannel analog-to-digital con- verters (adcs) such as the max11613 (see the typical application circuit ). the max11613 is a low-power, 12-bit i 2 c adc that measures either four single-ended or two differential channels in an 8-pin fmax ? pack- age. operating from a single 3v or 3.3v supply, the max11613 draws a low 380 f a supply current when sam- pling at 10ksps.the max11613 family also offers pin- compatible 5v adcs (max11612) and 8-bit (max11601) and 10-bit (max11607) options. the MAX9614/max9616s output voltage low is designed to be especially close to groundit is only 11mv above ground, allowing maximum dynamic range in single-supply applications. high output cur- rent and capacitance drive capability of the part help it to be useful in adc driver and line-driver. figure 1. autotrim timing diagram max is a registered trademark of maxim integrated products, inc. calibrated amplifier active 0.4 ms 10ms 0v 2v 0v 0.5v v cc v out* 5v time for power supply to settle amplifier autotrim
_______________________________________________________________________________________ 9 MAX9614/max9616 low-power single/dual, rail-to-rail op amps input bias current the MAX9614/max9616 feature a high-impedance cmos input stage and a specialized esd structure that allows low input bias current operation at low input common-mode voltages. low input bias current is useful when interfacing with high-ohmic sensors. it is also beneficial for designing transimpedance ampli- fiers for photodiode sensors. this makes the MAX9614/ max9616 ideal for ground referenced medical and industrial sensor applications. active filters the MAX9614/max9616 are ideal for a wide variety of active filter circuits that make use of their rail-to-rail output stages and high impedance cmos inputs. the typical application circuit shows an example multiple feedback active filter circuit with a corner frequency of 1.3khz. at low frequencies, the amplifier behaves like a simple low-distortion inverting amplifier of gain = -1, while its high bandwidth gives excellent stopband attenuation above its corner frequency. see the typical application circuit . chip information process: bicmos
10 _____________________________________________________________________________________ MAX9614/max9616 low-power single/dual, rail-to-rail op amps 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 the package regardless of rohs status. package type package code outline n o . land pattern no. 6 sc70 x6sn-1 21-0077 90-0189 8 sc70 x8sn-1 21-0460 sc70, 6l.eps
______________________________________________________________________________________ 11 MAX9614/max9616 low-power single/dual, rail-to-rail op amps package information (continued) 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 the package regardless of rohs status.
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. 12 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. MAX9614/max9616 low-power single/dual, rail-to-rail op amps revision history revision number revision date description pages changed 0 8/10 initial release

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