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features fet input: i b = 50pa max low offset voltage: 750 v max wide supply range: 4.5v to 18v slew rate: 10v/ s wide bandwidth: 4mhz excellent capacitive load drive single, dual, quad versions general-purpose fet-input operational amplifiers description the opa131 series of fet-input op amps provides high performance at low cost. single, dual, and quad versions in industry-standard pinouts allow cost-effective design op- tions. the opa131 series offers excellent general-purpose perfor- mance, including low offset voltage, drift, and good dynamic characteristics. single, dual, and quad versions are available in dip and so packages. performance grades include commercial and in- dustrial temperature ranges. 1 2 3 4 5 6 7 14 13 12 11 10 9 8 out d ?n d +in d v +in c ?n c out c out a ?n a +in a v+ +in b ?n b out b opa4131 dip-14, so-14 ad bc 1 2 3 4 8 7 6 5 nc v+ output offset trim offset trim in +in v opa131 dip-8, so-8 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 out d in d +in d v +in c in c out c nc out a in a +in a v+ +in b in b out b nc opa4131 sol-16 ad bc o pa131 opa2131 o p a 1 3 1 o p a 2 1 3 1 o p a 4 1 3 1 o p a 4 13 1 o p a 4 1 3 1 1 2 3 4 8 7 6 5 v+ out b in b +in b out a in a +in a v opa2131 dip-8, so-8 a b opa131 opa2131 opa4131 sbos040a november 1994 revised december 2002 www.ti.com production data information is current as of publication date. products conform to specifications per the terms of texas instruments standard warranty. production processing does not necessarily include testing of all parameters. copyright ? 1994, texas instruments incorporated 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. nc = no connection
opa131, 2131, 4131 2 sbos040a www.ti.com specified package temperature package ordering transport product package-lead designator (1) range marking number media, quantity single opa131 so-8 d 40 c to +85 c opa131uj opa131uj rails, 100 " " " " " opa131uj/2k5 tape and reel, 2500 opa131 so-8 d 40 c to +85 c opa131ua opa131ua rails, 100 " " " " " opa131ua/2k5 tape and reel, 2500 opa131 so-8 d 40 c to +85 c opa131u opa131u rails, 100 " " " " " opa131u/2k5 tape and reel, 2500 dual opa2131 so-8 d 40 c to +85 c opa2131uj opa2131uj rails, 100 " " " " " opa2131uj/2k5 tape and reel, 2500 opa2131 so-8 d 40 c to +85 c opa2131ua opa2131ua rails, 100 " " " " " opa2131ua/2k5 tape and reel, 2500 quad opa4131 dip-14 n 40 c to +85 c opa4131pj opa4131pj rails, 25 " " " " opa4131pa opa4131pa rails, 25 opa4131 sol-16 dw 40 c to +85 c opa4131ua opa4131ua rails, 48 " " " " " opa4131ua/1k tape and reel, 1000 opa4131 sol-14 d 40 c to +85 c opa4131nj opa4131nj rails, 58 " " " " opa4131na opa4131na rails, 58 absolute maximum ratings (1) supply voltage, v+ to v .................................................................... 36v input voltage .................................................. (v ) 0.7v to (v+) + 0.7v output short-circuit (2) .............................................................. continuous operating temperature .................................................. 55 c to +125 c storage temperature ..................................................... 55 c to +125 c junction temperature ...................................................................... 150 c lead temperature (soldering, 10s) ................................................. 300 c notes: (1) stresses above these ratings may cause permanent damage. exposure to absolute maximum conditions for extended periods may degrade device reliability. (2) short-circuit to ground, one amplifier per package. electrostatic discharge sensitivity this integrated circuit can be damaged by esd. texas instru- ments 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. package/ordering information note: (1) for the most current specifications and package information, refer to our web site at www.ti.com.
opa131, 2131, 4131 3 sbos040a www.ti.com electrical characteristics at t a = +25 c, v s = 15v, and r l = 2k ?, unless otherwise noted. opa131ua opa2131ua opa4131pa, ua, na opa131uj opa2131uj opa4131pj, nj parameter condition min typ max min typ max units offset voltage input offset voltage 0.2 1 ? 1.5 mv opa131u model only 0.2 0.75 mv vs temperature (1) operating temperature range 2 10 ?? v/ c vs power supply v s = 4.5v to 18v 50 200 ?? v/v opa131u model only 50 100 v/v input bias current (2) input bias current v cm = 0v +5 50 ?? pa vs temperature see typical characteristic ? input offset current v cm = 0v 1 50 ?? pa noise input voltage noise noise density, f = 10hz 21 ? nv/ hz f = 100hz 16 ? nv/ hz f = 1khz 15 ? nv/ hz f = 10khz 15 ? nv/ hz current noise density, f = 1khz 3 ? fa/ hz input voltage range common-mode voltage range (v ) + 3 (v+) 1 ?? v common-mode rejection v cm = 12v to +14v 70 80 ?? db opa131u model only 80 86 db input impedance differential 10 10 || 1 ? ? || pf common-mode v cm = 0v 10 12 || 3 ? ? || pf open-loop gain open-loop voltage gain v o = 12v to +12v 94 110 ?? db opa131u model only 100 110 db frequency response gain-bandwidth product 4 ? mhz slew rate 10 ? v/ s settling time 0.1% g = 1, 10v step, c l = 100pf 1.5 ? s 0.01% g = 1, 10v step, c l = 100pf 2 ? s total harmonic distortion + noise 1khz, g = 1, v o = 3.5vrms 0.0008 ? % output voltage output, positive (v+) 3 (v+) 2.5 ?? v negative (v ) + 3 (v ) + 2.5 ?? v short-circuit current 25 ? ma power supply specified operating voltage 15 ? v operating voltage range 4.5 18 ?? v quiescent current (per amplifier) i o = 0 1.5 1.75 ? 2ma temperature range operating range 55 +125 55 +125 c storage 55 +125 ?? c thermal resistance, ja dip-8 100 ? c/w so-8 150 ? c/w dip-14 80 ? c/w so-14, sol-16 110 ? c/w ? specifications same as opa131ua. notes: (1) ensured by wafer test. (2) high-speed test at t j = 25 c.
opa131, 2131, 4131 4 sbos040a www.ti.com typical characteristics at t a = +25 c, v s = 15v, and r l = 2k ?, unless otherwise noted. power supply and common-mode rejection vs frequency frequency (hz) power supply rejection (db) 120 100 80 60 40 20 0 common-mode rejection (db) 120 100 80 60 40 20 0 10 100 1k 10k 100k 1m cmr +psr psr channel separation vs frequency frequency (hz) channel separation (db) 160 140 120 100 80 10 100 1k 10k 100k dual and quad devices. g = 1, all channels. quad measured channel a to d or b to c other combinations yield improved rejection. r l = r l = 2k ? open-loop gain/phase vs frequency 1 120 100 80 60 40 20 0 20 voltage gain (db) 0 45 90 135 180 phase shift ( ) frequency (hz) 10 100 1k 10k 100k 1m 10m ? g input bias and input offset current vs temperature ambient temperature ( c) input bias and input offset current (pa) 10k 1k 100 10 1 0.1 0.01 75 50 25 0 25 50 75 100 125 i b i os v cm = 0v input bias current vs input common-mode voltage common-mode voltage (v) input bias current (pa) 1k 100 10 1 15 10 50 51015 input bias current is a function of the voltage between the v supply and the inputs. v s = 15v v s = 5v input voltage and current noise spectral density vs frequency 1 1k 100 10 voltage noise (nv/ hz) frequency (hz) 10 100 1k 10k 100k 1m 1 1k 100 10 current noise (fa/ hz) 1 voltage noise current noise
opa131, 2131, 4131 5 sbos040a www.ti.com typical characteristics (cont.) at t a = +25 c, v s = 15v, and r l = 2k ?, unless otherwise noted. quiescent current and short-circuit current vs temperature temperature ( c) quiescent current (ma) 1.8 1.6 1.4 1.2 1 short-circuit current (ma) 40 30 20 10 0 75 50 25 0 25 50 75 100 125 i sc+ i sc i q v s = 5v i q v s = 15v offset voltage drift production distribution units (%) offset voltage drift ( v/ c) 7 6 5 4 3 2 101234567 35 30 25 20 15 10 5 0 typical production distribution of packaged units. single, dual and quad units included. open-loop gain vs temperature ambient temperature ( c) voltage gain (db) 120 115 110 105 100 75 50 25 0 25 50 75 100 125 offset voltage production distribution units (%) offset voltage ( v) 1400 1200 1000 800 600 400 200 0 200 400 600 800 1000 1200 1400 20 15 10 5 0 typical production distribution of packaged units. single, dual and quad units included. total harmonic distortion + noise vs frequency frequency (hz) thd + noise (%) 1 0.1 0.01 0.001 0.0001 10 100 1k 10k 100k g = 1v/v g = 100v/v v o = 3.5vrms g = 10v/v bandwidth- limited maximum output voltage vs frequency 1m frequency (hz) 10k 100k v s = 5v maximum output voltage without slew-rate induced distortion. 10m 30 20 10 0 output voltage (vp-p) v s = 15v
opa131, 2131, 4131 6 sbos040a www.ti.com small-signal step response g =1, c l = 300pf 200ns/div 50mv/div typical characteristics (cont.) at t case = +25 c, v s = 15v, and r l = 2k ? , unless otherwise noted. large-signal step response g = 1, c l = 300pf 5v/div 1 s/div small-signal overshoot vs load capacitance load capacitance overshoot (%) 50 40 30 20 10 0 100pf 1nf 10nf r l = 2k ? higher r l value generally reduces overshoot. g = +2 g = 1 g = 10 g = 1 output voltage swing vs output current 15 14 13 12 11 10 10 11 12 13 14 15 0 5 10 15 20 25 30 ? output current ? (ma) output voltage swing (v) 55 c 55 c 25 c 125 c 125 c 25 c v in = 15v v in = 15v settling time vs closed-loop gain closed-loop gain (v/v) settling time ( s) 100 10 1 1 10 100 1000 v o = 10v step r l = 2k ? c l = 100pf 0.1% 0.01%
opa131, 2131, 4131 7 sbos040a www.ti.com applications information the opa131 series op amps are unity-gain stable and suitable for a wide range of general-purpose applications. power-supply pins should be bypassed with 10nf ceramic capacitors or larger. the opa131 series op amps are free from unexpected output phase-reversal common with fet op amps. many fet-input op amps exhibit phase-reversal of the output when the input common-mode voltage range is exceeded. this can occur in voltage-follower circuits, causing serious problems in control-loop applications. all circuitry is completely inde- pendent in dual and quad versions, assuring normal behavior when one amplifier in a package is overdriven or short- circuited. offset voltage trim the opa131 (single op amp version) provides offset volt- age trim connections on pins 1 and 5. offset voltage can be adjusted by connecting a potentiometer as shown in figure 1. this adjustment should be used only to null the offset of the op amp, not system offset or offset produced by the signal source. v+ v 100k ? opa131 (single op amp only) trim range: 20mv typ opa131 6 7 5 4 3 2 1 figure 1. opa131 offset voltage trim circuit. input bias current the input bias current is approximately 5pa at room tem- perature and increases with temperature as shown in the typical characteristic input bias current vs temperature. input bias current also varies with common-mode voltage and power supply voltage. this variation is dependent on the voltage between the negative power supply and the com- mon-mode input voltage. the effect is shown in the typical curve input bias current vs common-mode voltage.
packaging information orderable device status (1) package type package drawing pins package qty eco plan (2) lead/ball finish msl peak temp (3) opa131p obsolete pdip p 8 tbd call ti call ti opa131pa obsolete pdip p 8 tbd call ti call ti opa131pj obsolete pdip p 8 tbd call ti call ti opa131u active soic d 8 75 green (rohs & no sb/br) cu nipdau level-3-260c-168 hr opa131ua active soic d 8 75 green (rohs & no sb/br) cu nipdau level-3-260c-168 hr opa131ua/2k5 active soic d 8 2500 green (rohs & no sb/br) cu nipdau level-3-260c-168 hr opa131ua/2k5e4 active soic d 8 2500 green (rohs & no sb/br) cu nipdau level-3-260c-168 hr opa131uae4 active soic d 8 75 green (rohs & no sb/br) cu nipdau level-3-260c-168 hr opa131ug4 active soic d 8 75 green (rohs & no sb/br) cu nipdau level-3-260c-168 hr opa131uj active soic d 8 75 green (rohs & no sb/br) cu nipdau level-3-260c-168 hr opa131uj/2k5 active soic d 8 2500 green (rohs & no sb/br) cu nipdau level-3-260c-168 hr opa131uj/2k5e4 active soic d 8 2500 green (rohs & no sb/br) cu nipdau level-3-260c-168 hr opa131uje4 active soic d 8 75 green (rohs & no sb/br) cu nipdau level-3-260c-168 hr opa2131pa obsolete pdip p 8 tbd call ti call ti opa2131pj obsolete pdip p 8 tbd call ti call ti opa2131ua active soic d 8 75 green (rohs & no sb/br) cu nipdau level-3-260c-168 hr opa2131ua/2k5 active soic d 8 2500 green (rohs & no sb/br) cu nipdau level-3-260c-168 hr opa2131ua/2k5e4 active soic d 8 2500 green (rohs & no sb/br) cu nipdau level-3-260c-168 hr opa2131ua/2k5g4 active soic d 8 2500 green (rohs & no sb/br) cu nipdau level-3-260c-168 hr opa2131uae4 active soic d 8 75 green (rohs & no sb/br) cu nipdau level-3-260c-168 hr opa2131uag4 active soic d 8 75 green (rohs & no sb/br) cu nipdau level-3-260c-168 hr opa2131uj active soic d 8 75 green (rohs & no sb/br) cu nipdau level-3-260c-168 hr opa2131uj/2k5 active soic d 8 2500 green (rohs & no sb/br) cu nipdau level-3-260c-168 hr opa2131uj/2k5g4 active soic d 8 2500 green (rohs & no sb/br) cu nipdau level-3-260c-168 hr opa2131ujg4 active soic d 8 75 green (rohs & no sb/br) cu nipdau level-3-260c-168 hr opa4131na active soic d 14 50 green (rohs & no sb/br) cu nipdau level-3-260c-168 hr opa4131nag4 active soic d 14 50 green (rohs & no sb/br) cu nipdau level-3-260c-168 hr package option addendum www.ti.com 16-apr-2009 addendum-page 1
orderable device status (1) package type package drawing pins package qty eco plan (2) lead/ball finish msl peak temp (3) opa4131nj active soic d 14 50 green (rohs & no sb/br) cu nipdau level-3-260c-168 hr opa4131njg4 active soic d 14 50 green (rohs & no sb/br) cu nipdau level-3-260c-168 hr opa4131pa active pdip n 14 25 green (rohs & no sb/br) cu nipdau n / a for pkg type opa4131pag4 active pdip n 14 25 green (rohs & no sb/br) cu nipdau n / a for pkg type opa4131pj active pdip n 14 25 green (rohs & no sb/br) cu nipdau n / a for pkg type opa4131pjg4 active pdip n 14 25 green (rohs & no sb/br) cu nipdau n / a for pkg type opa4131ua active soic dw 16 40 green (rohs & no sb/br) cu nipdau level-3-260c-168 hr opa4131ua/1k active soic dw 16 1000 green (rohs & no sb/br) cu nipdau level-3-260c-168 hr opa4131ua/1kg4 active soic dw 16 1000 green (rohs & no sb/br) cu nipdau level-3-260c-168 hr opa4131uag4 active soic dw 16 40 green (rohs & no sb/br) cu nipdau level-3-260c-168 hr (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 16-apr-2009 addendum-page 2
tape and reel information *all dimensions are nominal device package type package drawing pins spq reel diameter (mm) reel width w1 (mm) a0 (mm) b0 (mm) k0 (mm) p1 (mm) w (mm) pin1 quadrant opa131ua/2k5 soic d 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 q1 opa131uj/2k5 soic d 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 q1 opa2131ua/2k5 soic d 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 q1 opa2131uj/2k5 soic d 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 q1 opa4131ua/1k soic dw 16 1000 330.0 16.4 10.85 10.8 2.7 12.0 16.0 q1 package materials information www.ti.com 18-dec-2008 pack materials-page 1
*all dimensions are nominal device package type package drawing pins spq length (mm) width (mm) height (mm) opa131ua/2k5 soic d 8 2500 346.0 346.0 29.0 opa131uj/2k5 soic d 8 2500 346.0 346.0 29.0 opa2131ua/2k5 soic d 8 2500 346.0 346.0 29.0 opa2131uj/2k5 soic d 8 2500 346.0 346.0 29.0 opa4131ua/1k soic dw 16 1000 346.0 346.0 33.0 package materials information www.ti.com 18-dec-2008 pack materials-page 2

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