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1 features description applications opa369 opa2369 sbos414a ? august 2007 ? revised september 2007 1.8v, 1 a max, zer?-crossover rail-to-rail i/o operational amplifier 2 zer?-crossover the opa369 and opa2369 are new low-power, low-voltage operational amplifiers from texas low power: 1 a (max) instruments designed especially for battery-powered low offset voltage: 750 v (max) applications. low voltage supply: +1.8v to +5.5v the opax369 operates on a supply voltage as low as low offset drift: 1.75 v/ c (max) 1.8v and has true rail-to-rail operation that makes it microsize packages: useful for a wide range of applications. the zero-crossover feature resolves the problem of input ? sc70-5, sot23-8, msop-8 crossover distortion that becomes very prominent in low voltage (< 3v), rail-to-rail input applications. battery-powered instruments in addition to microsize packages and very low quiescent current (1 a, max) the opax369 features portable devices 12khz bandwidth, low offset drift (1.75 v/ c, max), medical instruments and low 0.1hz to 10hz noise (3.6 v pp ). test equipment the opa369 (single version, available q4 2007) is offered in an sc70-5 package. the opa2369 (dual version) comes in both msop-8 and sot23-8 packages. hi laurie 1 please be aware that an important notice concerning availability, standard warranty, and use in critical applications of texas instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 all trademarks are the property of their respective owners. production data information is current as of publication date. copyright ? 2007, texas instruments incorporated products conform to specifications per the terms of the texas instruments standard warranty. production processing does not necessarily include testing of all parameters.
200150 100 50 0 - 50 - 100 - 150 - 200 offset voltage vs common-mode voltage (v = 1.8v) s common-mode voltage (v) offset voltage ( v) m 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 competition opa369
absolute maximum ratings (1) pin configurations opa369 opa2369 sbos414a ? august 2007 ? revised september 2007 this integrated circuit can be damaged by esd. texas instruments recommends that all integrated circuits be handled with appropriate precautions. failure to observe proper handling and installation procedures can cause damage. esd damage can range from subtle performance degradation to complete device failure. precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. over operating free-air temperature range (unless otherwise noted). value unit supply voltage, v s = (v+) ? (v ? ) +7v v voltage (2) ? 0.5 to (v+) + 0.5 v single input terminals current (2) 10 ma output short-circuit (3) continuous operating temperature, t a ? 55 to +125 c storage temperature, t a ? 65 to +150 c junction temperature, t j +150 c human body model (hbm) 4000 v esd ratings charged device model (cdm) 1000 v machine model (mm) 200 v (1) stresses above these ratings may cause permanent damage. exposure to absolute maximum conditions for extended periods may degrade device reliability. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those specified is not supported. (2) input terminals are diode-clamped to the power-supply rails. input signals that can swing more than 0.5v beyond the supply rails should be current limited to 10ma or less. (3) short-circuit to v s /2, one amplifier per package. package/ordering information (1) product package-lead package designator package marking opa369 sc70-5 (2) dck cjs msop-8 dgk occq opa2369 sot23-8 dcn ocbq (1) for the most current package and ordering information see the package option addendum at the end of this document, or see the ti web site at www.ti.com . (2) available q4, 2007. opa369 (1) opa2369 sc70-5 msop-8, sot23-8 (top view) (top view) (1) available q4, 2007. 2 submit documentation feedback copyright ? 2007, texas instruments incorporated product folder link(s): opa369 opa2369 www.ti.com 12 3 54 v+out +in v - - in 12 3 4 87 6 5 v+out b - in b +in b out a - in a +in a v -
electrical characteristics: v s = +1.8v to +5.5v opa369 opa2369 sbos414a ? august 2007 ? revised september 2007 boldface limits apply over the specified temperature range, t a = ? 40 c to +85 c. at t a = +25 c, r l = 100k ? connected to v s /2, unless otherwise noted. opa369 (1) , opa2369 parameter conditions min typ max unit offset voltage input offset voltage v os 250 750 v over temperature 1 mv drift dv os /dt 0.4 1.75 v/ c vs power supply psrr v s = 1.8v to 5.5v 5 20 v/v channel separation dc 0.1 v/v f = 1khz 120 db input voltage range common-mode voltage range v cm (v ? ) (v+) v common-mode rejection ratio cmrr (v ? ) v cm (v+) 100 114 db over temperature (v ? ) v cm (v+) 90 db input bias current input bias current i b 10 50 pa input offset current i os 10 50 pa input impedance differential ? || pf 10 13 || 3 common-mode ? || pf 10 13 || 6 noise input voltage noise f = 0.1hz to 10hz 3.6 v pp input voltage noise density f = 100hz 160 nv/ hz f = 1khz 120 nv/ hz current noise density f = 1khz 1 fa/ hz open-loop gain open-loop voltage gain a ol 100mv v o (v+) ? 100mv, r l = 114 134 db 100k ? over temperature 100mv v o (v+) ? 100mv, r l = 100 db 100k ? 500mv v o (v+) ? 500mv, r l = 114 134 db 10k ? over temperature 500mv v o (v+) ? 500mv, r l = 90 d b 10k ? output voltage output swing from rail r l = 100k ? 10 mv r l = 10k ? 25 mv short-circuit current i sc 10 ma capacitive load drive c load see typical characteristics pf frequency response gain-bandwidth product gbw 12 khz slew rate sr g = +1 0.005 v/ s overload recovery time v in gain > v s 250 s power supply specified voltage v s 1.8 5.5 v quiescent current i q i out = 0a 0.7 1 a (per channel amplifier) over temperature 1.25 a (1) opa369 specifications are preview. available q4, 2007. copyright ? 2007, texas instruments incorporated submit documentation feedback 3 product folder link(s): opa369 opa2369 www.ti.com
opa369 opa2369 sbos414a ? august 2007 ? revised september 2007 electrical characteristics: v s = +1.8v to +5.5v (continued) boldface limits apply over the specified temperature range, t a = ? 40 c to +85 c. at t a = +25 c, r l = 100k ? connected to v s /2, unless otherwise noted. opa369 (1) , opa2369 parameter conditions min typ max unit temperature range specified range t a ? 40 +85 c operating range t a ? 55 +125 c thermal resistance ja sc70 250 c/w sot23 223 c/w msop 252 c/w 4 submit documentation feedback copyright ? 2007, texas instruments incorporated product folder link(s): opa369 opa2369 www.ti.com
typical characteristics opa369 opa2369 sbos414a ? august 2007 ? revised september 2007 at t a = +25 c, v s = 5v, r l = 100k ? connected to v s /2, unless otherwise noted. offset voltage offset voltage drift production distribution production distribution figure 1. figure 2. normalized offset voltage offset voltage vs temperature vs common-mode voltage figure 3. figure 4. input-referred voltage noise 0.1hz to 10hz noise vs frequency figure 5. figure 6. copyright ? 2007, texas instruments incorporated submit documentation feedback 5 product folder link(s): opa369 opa2369 www.ti.com population offset voltage ( v) m - 750 - 675 - 600 - 525 - 450 - 375 - 300 - 225 - 150 - 75 0 75 150225 300 375 450 525 600 675 750 - 1.2 population offset voltage drift ( v/ c) m - 1.1 - 1.0 - 0.9 - 0.8 - 0.7 - 0.6 - 0.5 - 0.4 - 0.3 - 0.2 - 0.1 0 0.1 0.2 0.30.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1000 800600 400 200 0 - 200 - 400 - 600 - 800 - 1000 temperature ( c) offset voltage ( v) m - 75 100 125 - 50 - 25 0 25 50 75 normalized offset voltage m ( v) 100 8060 40 20 0 - 20 - 40 - 60 - 80 - 100 common-mode voltage (v) - 0.2 0 0.20.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6 3.8 4.0 4.2 4.4 4.6 4.8 5.0 5.2 v = 5v s 10 typical units shown 1 m v/div time (500ms/div) 10000 1000 100 10 frequency (hz) v oltage noise, rti (nv/ ) ? hz 0.1 100 10 1 1k
opa369 opa2369 sbos414a ? august 2007 ? revised september 2007 typical characteristics (continued) at t a = +25 c, v s = 5v, r l = 100k ? connected to v s /2, unless otherwise noted. open-loop gain and phase power-supply rejection ratio vs frequency vs frequency figure 7. figure 8. common-mode rejection ratio vs frequency channel separation vs frequency figure 9. figure 10. common-mode rejection ratio power-supply rejection ratio vs temperature vs temperature figure 11. figure 12. 6 submit documentation feedback copyright ? 2007, texas instruments incorporated product folder link(s): opa369 opa2369 www.ti.com 140120 100 8060 40 20 0 - 20 frequency (hz) gain (db) 0.001 100 1k 10 0.1 1 0.01 20k 10k phase gain 180 135 90 45 0 phase ( ) 110100 9080 70 60 50 40 30 20 10 0 frequency (hz) psrr (db) 1 1k 10k 100 10 20k +psrr - psrr 120100 8060 40 20 0 frequency (hz) cmrr (db) 10 10k 1k 100 20k 160140 120 100 8060 40 20 0 frequency (hz) channel separation (db) 100 10k 1k 100k 2015 10 50 - 5 - 10 - 15 - 20 temperature ( c) psrr ( v/v) m - 75 - 50 - 25 0 25 50 75 100 125 10 typical units shown 10 86 4 2 0 temperature ( c) cmrr ( v/v) m - 75 100 125 - 50 - 25 0 25 50 75
opa369 opa2369 sbos414a ? august 2007 ? revised september 2007 typical characteristics (continued) at t a = +25 c, v s = 5v, r l = 100k ? connected to v s /2, unless otherwise noted. output voltage swing-from-rail open-loop gain vs temperature vs temperature figure 13. figure 14. input bias current output voltage vs temperature vs output current figure 15. figure 16. maximum output voltage quiescent current vs temperature vs frequency figure 17. figure 18. copyright ? 2007, texas instruments incorporated submit documentation feedback 7 product folder link(s): opa369 opa2369 www.ti.com 3.02.5 2.0 1.5 1.0 0.5 0 temperature ( c) a ( v/v) m ol - 75 - 50 - 25 0 25 50 75 100 125 r = 10k w l r = 100k w l 2520 15 10 50 - 5 - 10 - 15 - 20 - 25 temperature ( c) output voltage swing-from-rail (mv) - 75 100 125 - 50 - 25 0 25 50 75 r = 10k w l r = 100k w l input bias current (pa) - 50 10k 1k 100 10 1 0.1 0.01 temperature ( c) 125 - 25 0 25 50 75 100 output voltage (v) 0 2.752.25 1.75 1.25 0.75 0.25 - 0.25 - 0.75 - 1.25 - 1.75 - 2.25 - 2.75 output current (ma) 45 5 30 10 15 20 25 35 40 +115 c +85 c +25 c - 40 c v = 2.75v s 2.01.5 1.0 0.5 0 temperature ( c) quiescent current ( a) m - 75 100 - 50 - 25 0 25 50 75 125 3.02.5 2.0 1.5 1.0 0.5 0 frequency (hz) maximum v (v) out 100 1k 2k
opa369 opa2369 sbos414a ? august 2007 ? revised september 2007 typical characteristics (continued) at t a = +25 c, v s = 5v, r l = 100k ? connected to v s /2, unless otherwise noted. small-signal overshoot vs capacitive load small-signal step response figure 19. figure 20. large-signal step response overload recovery figure 21. figure 22. 8 submit documentation feedback copyright ? 2007, texas instruments incorporated product folder link(s): opa369 opa2369 www.ti.com 20mv/div time (100 s/div) m c = 20pf l 5040 30 20 10 0 capacitive load (pf) overshoot (%) 10 100 200 g = +1 500mv/div time (250 s/div) m 1v/div time (500 s/div) m c = 200pf l
application information noise operating voltage capacitive load and stability input common-mode voltage range protecting inputs from opa369 opa2369 sbos414a ? august 2007 ? revised september 2007 the opa369 family of operational amplifiers minimizes power consumption and operates on supply voltages as low as 1.8v. power-supply rejection ratio (psrr), common-mode rejection ratio (cmrr), and open-loop gain (a ol ) typical values are in the range of 100db or better. when designing for ultralow power, choose system components carefully. to minimize current consumption, select large-value resistors. however, note that large resistors will react with stray capacitance in the circuit and the input capacitance of figure 23. input current protection for voltages the operational amplifier. these parasitic rc exceeding the supply voltage combinations can affect the stability of the overall system. a feedback capacitor may be required to assure stability and limit overshoot or gain peaking. good layout practice and use of a 0.1 f bypass although micropower amplifiers frequently have high capacitor placed closely across the supply pins are wideband noise, the opa369 series offers excellent mandatory. noise performance. the opa369 has only 2.8 v pp of 0.1hz to 10hz noise, and 80nv/ hz of wideband noise. resistors should be chosen carefully, because they can become the dominant source of noise. opa369 series op amps are fully specified and tested from +1.8v to +5.5v. parameters that vary significantly with supply voltage are shown in the typical characteristic curves. follower configurations with load capacitance in excess of approximately 50pf can produce extra overshoot and ringing in the output signal (see figure 19 ). increasing the gain enhances the ability of the opa369 family is designed to eliminate the input the amplifier to drive greater capacitive loads. in offset transition region typically present in most unity-gain configurations, capacitive load drive can be rail-to-rail complementary stage operational improved by inserting a small (10 ? to 20 ? ) resistor, amplifiers, which allows the opa369 family of r s , in series with the output, as shown in figure 24 . amplifiers to provide superior common-mode this resistor significantly reduces ringing while performance over the entire input range. maintaining dc performance for purely capacitive loads. however, if there is a resistive load in parallel the input common-mode voltage range of the with the capacitive load, a voltage divider is created, opa369 family typically extends to each supply rail. introducing a dc error at the output and slightly cmrr is specified from the negative rail to the reducing the output swing. the error introduced is positive rail. see figure 4 the normalized offset proportional to the ratio r s /r l , and is generally voltage vs common-mode voltage. negligible. over-voltage input currents are typically 10pa. however, large inputs (greater than 500mv beyond the supply rails) can cause excessive current to flow in or out of the input pins. therefore, in addition to keeping the input voltage between the supply rails, it is also important to limit the input current to less than 10ma. this limiting is easily accomplished with an input resistor, as shown in figure 23 . figure 24. series resistor in unity-gain buffer configuration improves capacitive load drive copyright ? 2007, texas instruments incorporated submit documentation feedback 9 product folder link(s): opa369 opa2369 www.ti.com 5k w opa369 10ma max +5v v in v out i overload current-limiting resistor required if input voltage exceeds supply rails by3 0.5v. 10 to w 20 w opa369 v+ v in v out r s r l c l
(1) (2) battery monitoring (3) (4) opa369 opa2369 sbos414a ? august 2007 ? revised september 2007 in unity-gain inverter configuration, phase margin can 1. selecting r f : select r f such that the current be reduced by the reaction between the capacitance through r f is approximately 1000x larger than at the op amp input and the gain setting resistors. the maximum bias current over temperature: best performance is achieved by using smaller valued resistors. however, when larger valued resistors cannot be avoided, a small (4pf to 6pf) capacitor, c fb , can be inserted in the feedback, as shown in figure 25 . this configuration significantly reduces overshoot by compensating the effect of capacitance, c in , which includes the amplifier input 2. choose the hysteresis voltage, v hyst . for capacitance and printed circuit board (pcb) parasitic battery-monitoring applications, 50mv is capacitance. adequate. 3. calculate r 1 as follows: 4. select a threshold voltage for v in rising (v thrs ) = 2.0v 5. calculate r 2 as follows: figure 25. improving stability for large r f and r in the low operating voltage and quiescent current of the opa369 series make it an excellent choice for battery monitoring applications, as shown in 6. calculate r bias : the minimum supply voltage for figure 26 . in this circuit, v status is high as long as this circuit is 1.8v. the ref1112 has a current the battery voltage remains above 2v. a low-power requirement of 1.2 a (max). providing the reference is used to set the trip point. resistor values ref1112 with 2 a of supply current assures are selected as follows: proper operation. therefore: figure 26. battery monitor 10 submit documentation feedback copyright ? 2007, texas instruments incorporated product folder link(s): opa369 opa2369 www.ti.com r = f v ref 1000(i bmax ) = 1.2v 1000(50pa) = 24m 20m w w ? r = r 1 f = 20m w v hyst v batt = 420k w 50mv 2.4v r i opa369 v in v out r f c fb c in r = 2 - v thrs v batt 1 r 1 1 ( ) - 1 r 1 = - 2v 1.2v 420k w 1 420k w 1 ( ) - 1 20m w = 650k w r = bias = 0.9m w v battmin i bias = 1.8v 2 a m ref1112 opa369 +in out - in v status v batt v ref r 1 r 2 r bias i bias r f +
window comparator (5) (6) additional application examples opa369 opa2369 sbos414a ? august 2007 ? revised september 2007 if v in falls below v l , the output of a2 is high, current flows through d2, and v out is low. likewise, if v in figure 27 shows the opa2369 used as a window rises above v h , the output of a1 is high, current flows comparator. the threshold limits are set by v h and through d1, and v out is low. the window comparator v l , with v h > v l . when v in < vh , the output of a1 is threshold voltages are set as follows: low. when v in >v l , the output of a2 is low. therefore, both op amp outputs are at 0v as long as v in is between v h and v l . this configuration results in no current flowing through either diode, q1 in cutoff, with the base voltage at 0v, and v out forced high. figure 27. opa2369 as a window comparator figure 28 through figure 32 illustrate additional application examples. figure 28. single op amp bridge amplifier copyright ? 2007, texas instruments incorporated submit documentation feedback 11 product folder link(s): opa369 opa2369 www.ti.com v = h r 2 r + r 1 2 v = l r 4 r + r 3 4 3v a1a2 d1 (2) d2 (2) r 5 10k w r 6 5.1k w r 7 5.1k w r in 2k w (1) 3v 3v q1 (3) r 1 v h v l r 2 1/2 opa2369 1/2 opa2369 3v v out v in 3v r 3 r 4 notes: (1) r protects a1 and a2 from possible excess current flow. in (2) in4446 or equivalent diodes. (3) 2n2222 or equivalent npn transistor. r 1 v ex v out v ref r 1 opa369 r r r r +5v
opa369 opa2369 sbos414a ? august 2007 ? revised september 2007 figure 29. unipolar signal chain configuration figure 30. high-side current monitor figure 31. low-side current monitor 12 submit documentation feedback copyright ? 2007, texas instruments incorporated product folder link(s): opa369 opa2369 www.ti.com r 3 r 2 v in +2.7v r 66.5 1 w c 1.5nf 1 c 1 f 2 m vref a0+ ref3312 +2.7v v cc v ss 16-bit adc msp430x20x3pw opa369 opa369 output r shunt load v+ v+ r g r l r (2) 1 10k w r bias +5v zener (1) two zener biasing methods are shown. (3) mosfet rated tostand-off supply voltage such as bss84 for up to 50v. (1) zener rated for op amp supply capability (that is, 5.1v for opa369). (2) current-limiting resistor. (3) choose zener biasing resistor or dual nmosfets (fdg6301n, ntjd4001n, or si1034) notes: note: 1% resistors provide adequate common-mode rejection at small ground-loop errors. opa369 ads1100 load v i c 2 r 1 4.99k w r 3 4.99k w r 4 48.7k w r 2 49.9k w +5v 3v ref3130 r 7 1.18k w r shunt 1 w r 6 71.5k w r n 56 w r n 56 w (pga gain = 4)fs = 3.0v stray ground-loop resistance i load
opa369 opa2369 sbos414a ? august 2007 ? revised september 2007 figure 32. two op amp instrumentation amplifier copyright ? 2007, texas instruments incorporated submit documentation feedback 13 product folder link(s): opa369 opa2369 www.ti.com r 2 v = (v - v ) 1 + + + v out 1 2 ref r 1 r 2 r g r 2 r 1 v ref v out v 2 v 1 r 1 1/2 opa2369 1/2 opa2369 2r 1 r g
packaging information orderable device status (1) package type package drawing pins package qty eco plan (2) lead/ball finish msl peak temp (3) opa2369aidcnr active sot-23 dcn 8 3000 green (rohs & no sb/br) cu nipdau level-2-260c-1 year opa2369aidcnrg4 active sot-23 dcn 8 3000 green (rohs & no sb/br) cu nipdau level-2-260c-1 year opa2369aidcnt active sot-23 dcn 8 250 green (rohs & no sb/br) cu nipdau level-2-260c-1 year opa2369aidcntg4 active sot-23 dcn 8 250 green (rohs & no sb/br) cu nipdau level-2-260c-1 year opa2369aidgkr active msop dgk 8 2500 green (rohs & no sb/br) cu nipdau level-2-260c-1 year OPA2369AIDGKRG4 active msop dgk 8 2500 green (rohs & no sb/br) cu nipdau level-2-260c-1 year opa2369aidgkt active msop dgk 8 250 green (rohs & no sb/br) cu nipdau level-2-260c-1 year opa2369aidgktg4 active msop dgk 8 250 green (rohs & no sb/br) cu nipdau level-2-260c-1 year opa369aidckr preview sc70 dck 5 3000 tbd call ti call ti opa369aidckt preview sc70 dck 5 250 tbd call ti call ti (1) the marketing status values are defined as follows: active: product device recommended for new designs. lifebuy: ti has announced that the device will be discontinued, and a lifetime-buy period is in effect. nrnd: not recommended for new designs. device is in production to support existing customers, but ti does not recommend using this part in a new design. preview: device has been announced but is not in production. samples may or may not be available. obsolete: ti has discontinued the production of the device. (2) eco plan - the planned eco-friendly classification: pb-free (rohs), pb-free (rohs exempt), or green (rohs & no sb/br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. tbd: the pb-free/green conversion plan has not been defined. pb-free (rohs): ti's terms "lead-free" or "pb-free" mean semiconductor products that are compatible with the current rohs requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. where designed to be soldered at high temperatures, ti pb-free products are suitable for use in specified lead-free processes. pb-free (rohs exempt): this component has a rohs exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. the component is otherwise considered pb-free (rohs compatible) as defined above. green (rohs & no sb/br): ti defines "green" to mean pb-free (rohs compatible), and free of bromine (br) and antimony (sb) based flame retardants (br or sb do not exceed 0.1% by weight in homogeneous material) (3) msl, peak temp. -- the moisture sensitivity level rating according to the jedec industry standard classifications, and peak solder temperature. important information and disclaimer: the information provided on this page represents ti's knowledge and belief as of the date that it is provided. ti bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. efforts are underway to better integrate information from third parties. ti has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. ti and ti suppliers consider certain information to be proprietary, and thus cas numbers and other limited information may not be available for release. in no event shall ti's liability arising out of such information exceed the total purchase price of the ti part(s) at issue in this document sold by ti to customer on an annual basis. package option addendum www.ti.com 1-oct-2007 addendum-page 1
tape and reel box information device package pins site reel diameter (mm) reel width (mm) a0 (mm) b0 (mm) k0 (mm) p1 (mm) w (mm) pin1 quadrant opa2369aidcnr dcn 8 site 48 179 8 3.2 3.2 1.4 4 8 q3 opa2369aidcnt dcn 8 site 48 179 8 3.2 3.2 1.4 4 8 q3 package materials information www.ti.com 4-oct-2007 pack materials-page 1
device package pins site length (mm) width (mm) height (mm) opa2369aidcnr dcn 8 site 48 195.0 200.0 45.0 opa2369aidcnt dcn 8 site 48 195.0 200.0 45.0 package materials information www.ti.com 4-oct-2007 pack materials-page 2

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