ANALOG Precision, Low Power, Micropower DEVICES Dual Operational Amplifier OP-290 FEATURES Single/Dual Supply Operation........... +1.6V to +36V ceeeeeeees 0.8V to +18V True Single-Supply Operation; Input and Output Voltage Ranges Include Ground Low Supply Current (per amplifier) .......... 20nA Max High Output Drive ................ cee eee 5mA Min Low Input Offset Voltage................... 200.V Max High Open-Loop Gain ................... 700V/mV Min Outstanding PSRR ....................... 5.6uV/V Max Industry Standard 8-Pin Dual Pinout Available in Die Form ORDERING INFORMATION ' T,=+25C PACKAGE OPERATING VogMAX CERDIP Lec TEMPERATURE (mV) 8-PIN PLASTIC 20-CONTACT RANGE 200 OP290AZ"* - OP290ARC/883 MIL 200 OP290EZ - - XIND 300 OP290FZ - - XIND 500 - OP290GP - XIND 500 - op2g90qsit - XIND tt For devices processed in total compliance to MIL-STD-883, add /883 after part number. Consult factory for 883 data sheet. Burn-in is available on commercial and industrial temperature range parts in CerDIP, plastic DIP, and TO-can packages. For availability and burn-in information on SO and PLCC packages, contact your local sales office. dual supplies of +0.8V to + 18V. Input voltage range includes the negative rail allowing the OP-290 to accommodate input signals down to ground in single supply operation. The OP-290s output swing also includes ground when operating from a single supply, enabling zero-in, zero-out operation. The OP-290 draws less than 20zA of quiescent supply cur- rent per amplifier, while able to deliver over 5mMA of output current toa load. Input offset voltage is below 200zV eliminat- ing the need for external nulling. Gain exceeds 700,000 and common-mode rejection is better than 100dB. The power Continued PIN CONNECTIONS -wa lite rE) outa +INA a> 15] N.C. nc. [3] 14] N.C. v- [4] 13] v+ nc. [2] 12} N.C. + 6 Wi] N.C. INB ct -INB ZR. 10| OUT B n.c. [a | 9 | N.C. 16-PIN SOL (S-Suffix) EPOXY MINI-DIP (P-Suffix) GENERAL DESCRIPTION 8-PIN HERMETIC DIP The OP-290 is a high performance micropower dual op amp (Z-Suffix) that operates from a single supply of + 1.6V to +36V or from SIMPLIFIED SCHEMATIC (One of two amplifiers is shown.) . . > O V+ > | be 6] | nm a i Ry Vr Ry hy +1N ow KF pr rk JJU -O OUTPUT IN O-VWA- | a Y NULL NULL = @ OV ELECTRONICALLY ADJUSTED ON CHIP FOR MINIMUM OFFSET VOLTAGEOP-290 GENERAL DESCRIPTION Continued supply rejection ratio of under 5.6yuV/V minimizes offset vol- tage changes experienced in battery powered systems. The low offset voltage and high gain offered by the OP-290 bring precision performance to micropower applications. The minimal voltage and current requirements of the OP-290 suit it for battery and solar powered applications, such as portable instruments, remote sensors, and satellites. For a single op amp, see the OP-90; for a quad, see the OP-490. ABSOLUTE MAXIMUM RATINGS (Note 1) SUPpPly Voltage ...........cccesceccesseecersssecensesseeseessuesneceenseeesseees +18V Differential Input Voltage .............. [(V) 20V] to [(V+) + 20V]} Common-Mode input Voltage ecuaeeeccesaeenenececeeeeeeseaeeneesatseeeeeseeees [(V) 20V] to [(V+} + 20V] Output Short-Circuit Duration ........ ce eessseeeeeeeseees Indefinite Storage Temperature Range P, RC, S, Z Package ..........cececessesteeeeeeees -65C to +150C Operating Temperature Range OP-290A 00.0... ccececessscssssssceaeeessaeaserecseeeeetess 55C to +125C OP-290E, OP-290F, OP-290G ....... 40C to +85C Junction Temperature (T)) besetaeeeenettatensneennees ~65C to +150C Lead Temperature Range (Soldering, 60 sec) .............. 300C PACKAGE TYPE Bn (Note 2) Bic UNITS 8-Pin Hermetic DIP (Z) 134 12 CW 8-Pin Plastic DIP (P) 96 37 SCM 20-Contact LCC (RC) 88 33 C 16-Pin SOL (S) 92 27 CW NOTES: 1. Absolute maximum ratings apply to both DICE and packaged parts, unless other- wise noted. 2. @,, is specified for worst case mounting conditions, i.e., @,, is specified for device in socket for CerDIP, P-DIP, and LCC packages; 8, |S Specified for device sol- dered to printed circuit board for SOL package. ELECTRICAL CHARACTERISTICS at Vg = +1.5V to +15V, Ta = + 25C, unless otherwise noted. OP-290A/E OP-290F OP-290G PARAMETER SYMBOL CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS Input Offset Voltage Vos _ 50 200 _ 75 300 _ 125 500 uv Input Offset Current los Vom = OV _ 01 3 _ 01 5 _ 0.1 5 nA Input Bias Current Ip Vom = OV _ 4.0 15 _ 4.0 20 _ 4.0 25 nA Vg = + 15V, Vo = +10V R, = 100k 700 1200 _ 500 1000 _ 400 800 _ Ry = 10kN 350 600 _ 250 500 _ 200 400 _ Large Signal Avo R_= 2k 125 250 _ 100 200 _ 100 200 _ V/V Voltage Gain V+ =5V, V-=0V, 1V < Vo <4V R_ = 100kN 200 400 _ 125 300 _ 100 250 _ R_ = 10k. 100 180 _ 75 140 _ 70 140 _ Input Voltage R VR V+ = 5V, V-=0V 0/4 0/4 0/4 _ _ V nput Voltage hange Vg=+15V (Note 1) ~15/13.5 _ ~18/13.5 _ -15/13.5 _ _ Vg = +15V Vo R, = 10k0. 413.5 +4142 _ 413.5 +142 _ +13.5 414.2 _ Vv R,_ = 2k 410.5 +115 _ #105 +11.5 _ 410.6 +11.5 _ V+ = 5V, V-=0V Output Voltage Swing Vou 8 4.0 4.2 _ 40 4.2 _ 4.0 4.2 _ v R_ = 2k V+ = 5V, V- = 0V Vv , _ 10 50 _ 10 50 _ 10 50 Vv ol Ry = 10k02 M V+ = SV, Vo = OV, 90118 - 80-100 - 80 100 - Common-Mode cme OV < Voy < 4V dB Rejecti Vg=+ ejection s= 218V, 1000 1200S 90 120002=CS 90 12002~C 18V < Voy < 13.5V P Ss I ower pUPP y . PSRR _ 1.0 5.6 - 1.0 5.6 _ 3.2 10 pV/V Rejection Ratio Supply Current Vg = +1.5V _ 19 30 _ 19 30 _ 19 30 A (All Amplifiers) SY Vg = +15V 25 40 25 40 25 40 B Capacitive Load Ay=+1 650 _ Stability No Oscillations 850 650 pF : fo = 0.1Hz to 10Hz Input Noise Voltage Enp-p Vg = +15V _ 3 _ _ 3 _ _ 3 _ HVp-pOP-290 ELECTRICAL CHARACTERISTICS at Vs = +1.5V to +15V, Ta = + 25C, unless otherwise noted. Continued OP-290A/E OP-290F OP-290G PARAMETER SYMBOL CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS Input Resistance =+ _ _ _ Differential-Mode Rin Vs = = 18V 30 30 30 MoO Input Resistance =+ _ _ _ _ Common-Mode Rincm Vg = +15V 20 20 20 GO Ay=+1 Slew Rat R 5 12 _ 5 12 _ 1 _ ew Rate Ss Vg = +15V 5 2 V/ms Gain Bandwidth Ay=t+1 P _ _ Product GBW Vg = 15V 20 20 20 kHz fo = 10Hz Channel Separation cs Vo = 20Vp-p 120 150 _ 120 150 _ 120 150 _ dB Vg = +15V (Note 2) NOTES: 1. Guaranteed by CMR test. 2. Guaranteed but not 100% tested. ELECTRICAL CHARACTERISTICS at Vs = +1.5V to +15V, -55C <= Ta < 125C, unless otherwise noted. OP-290A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Input Offset Voltage Vos _ 80 500 pV Average Input Offset Vg = +15V _ 0.3 3 VPC Voltage Drift TCVos 8 a Input Offset Current los Vom = OV _ 01 5 nA Input Bias Current le Vom = OV _ 4.2 20 nA Vg = +15V, Vo = +10V R_ = 100k 225 400 _ : Ry, = 10k 125 240 _ Large Signal R,_ = 2k0 50 110 Voltage Gain Avo - v/mv V+ = 5V, V-= OV, 1V <Vo<4V R, = 100k. 100 200 _ RL = t0ko 50 110 _ V+ = 5V, V-=0V 0/3.5 _ _ R Note 1 Input Voltage Range IVR Vg = H15V (Note 1) -15/13.5 _ _ Vv Vg = 415V Vo R, = 10k +13 +14.1 _ Vv R, = 2k. +10 +11 _ Output Voit Swi utput Voltage Swing , V+ =5V, V-=0V 30 a OH Ry = 2kQ , ~ v V V4 = 5, Ve = OV 10 100 V OL R= 10k?) e a V+ = 5V, V- = OV, OV < Voy < 3.5V 80 105 - R t Common-Mode Rejection CMR Vg = #15V, 18V < Vong < 13.5V 90 115 _ dB P Suppi ower SUPP YY PSRR - 3.2 10 V/V Rejection Ratio Supply Current Vg = 1.5V _ 30 50 A (All Amplifiers) SY Vg = +15V 38 60 # NOTE: 1. Guaranteed by CMR test.OP-290 ELECTRICAL CHARACTERISTICS at Vs = +1.5V to +15V, 40C < T, < 85C for OP-290E/F/G, unless otherwise noted. OP-290E OP-290F OP-290G PARAMETER SYMBOL CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS Input Offset Voltage Vos _ 70 400 _ 116 600 _ 200 750 uv Average Input Offset TCV, Vg = 2+15V _ 0.3 3 _ 0.6 5 _ 1.2 _ V/C Voltage Drift CVos 8 M Input Offset Current los Vom = OV _ 0.1 3 _ 0.1 5 _ 0.1 7 nA Input Bias Current lp Vom = OV _ 4.2 15 _ 4.2 20 _ 4.2 25 nA Vg = +15V, Vo = +10V R, = 100k 500 800 _ 350 700 _ 300 600 _ R, = 10k9 250 400 _ 175 350 _ 150 250 _ Large Signal Avo R, = 2k0 100 200 _ 75 150 _ 15 125 _ V/mv Voltage Gain V+ = 5V, V-=0V, 1V<Vo<4V R_ = 100k 150 280 _ 100 220 _ 80 160 _ R,_ = 10k 75 140 _ 50 110 _ 40 90 _ Input Volt Range IVA V+ = 5V, V-=0V 0/3.5 _ _ 0/3.5 _ _ 0/3.5 _ _ V pur votiage mang Vg=+15V (Note 1) -15/13.5 _ ~15/13.5 _ ~15/13.5 _ _ Vg = +15V Vo Ry = 10kn +13 +14 _ +13 +14 _ +13 +14 _ v Ru =2k0 +10 +11 _ +10 +11 _ +10 +11 _ V+ = 5V, V-=0V Output Voltage Swing Vou 3.9 44 _ 3.9 4] _ 3.9 41 Vv R. = 2ka V+ = 5V, V-=0V Vv , > 10 100 _ 10 100 _ 10 100 OL R, = 10kn wv V+ = SV, V-= OV, 85 105 _ 80 100 - 80 100 Common-Mode CMR OV < Voy < 3.5V 4B act) =+ Rejection Vs = 2 15V, 95 115 _ 90 110 90110 _ -15V < Voy < 13.5V Power Supply PSRR _ . _ . Rejection Ratio - Ss 3.2 1.5 5.6 10 5.6 15 uV/V Supply Current , Vg = +1.5V _ 24 50 _ 24 50 _ 24 50 A (All Amplifiers) 8Y Vg = +15V _ 31 60 31 60 31 60 NOTE: 1. Guaranteed by CMR test.OP-290 DICE CHARACTERISTICS _ OUT A -INA +iINA +IN B -INB OUT B V+ B V+ A OPNAARYONS DIE SIZE 0.109 x 0.104 inch, 11,336 sq. mils (2.77 X 1.70mm, 4.71 sq. mm) WAFER TEST LIMITS at Vs = +1.5V to +15V, Ta = 25C, unless otherwise noted. OP-290GBC PARAMETER SYMBOL CONDITIONS LIMIT UNITS Input Offset Voltage Vos 300 uv MAX Input Offset Current los Vom = OV 5 nA MAX Input Bias Current lp Vom = OV 20 nA MAX Vg = 18V, Vo = +10V R, = 100k. 500 V/mV MIN Large Signal A R_ = 10k 250 Voltage Gain vo g V+ = 5V, V- = OV, 1V<Vo<4V 125 V/mV MIN R, = 100k V+ = 5V, V-=0V 0/4 R Note 1 V MIN Input Voltage Range IVR Vg = +15V (Note 1) -45/13.5 Vg = +15V Vo Ry = 10k2 +13.5 V MIN Ry = 2k0 +10.5 Output Voltage Swing ' V+=5V, V-=0V to v MIN OH Rp = 2kn , V+ = V, V- =0V 50 V MAX Vou Ry = 10kQ B . V+ = 5V, V- = OV, OV < Voy < 4V 80 -Mode R R dB MIN Common-Mode Rejection CM Vg = +15V, -18V < Voy < 13.5V 90 P S$ | ower uppy : PSRR 5.6 uV/V MAX Rejection Ratio Supply C t upply Curren Igy Vg = +15V 40 pA MAX (All Amplifiers) NOTES: 1. Guaranteed by CMR test. Electrical tests are performed at wafer probe to the limits shown. Due to variations in assembly methods and normal yield loss, yield after packaging is not guaranteed for standard product dice. Consult factory to negotiate specifications based on dice lot qualification through sample lot assembly and testing.OP-290 TYPICAL PERFORMANCE CHARACTERISTICS INPUT OFFSET VOLTAGE vs TEMPERATURE vs TEMPERATURE 100 1 = Vg = 15V Vg = 15V ar Ls s 80 w A 5 0.12 q Ww 5 60 & 3 3 > 3 o 04 wi - i / bi a = 40 7 it 3 5 \/ 0.08 g 2 = 2 7 z a 0.06 0 -7%5 -50 -25 0 25 50 75 100 125 -75 -50 -25 0 25 50 75 TEMPERATURE (C) TEMPERATURE (C) SUPPLY CURRENT vs TEMPERATURE OPEN-LOOP GAIN vs SINGLE-SUPPLY VOLTAGE INPUT OFFSET CURRENT 100 125 600 T NO LOAD R, = 10k0 Ty = 25C 500 _ =z > 3 E = = 400 |} Ta = 85C | re z E s a = 300 + 3 3 Y aA Ta = 125C a Z 200 nl a & C Lr a 3 oa 100 |- 0 -75 -50 -25 0 25 50 75 100 125 0 5 10 15 20 25 30 TEMPERATURE (C) SINGLE-SUPPLY VOLTAGE (VOLTS) CLOSED-LOOP GAIN OUTPUT VOLTAGE SWING vs FREQUENCY vs LOAD RESISTANCE 60 TTTITT 6 TTT Ty = 25C Ta = 25C Vg = +15V V+ = SV, V- =0V a5 @ 40 3 a vu > pen z \ o4 rm a al 2 YY 9 " = VY 8 \ wu f| 20 3 3 Gg a x 4 \ E|F a \ 9 > 2 kb a =) o 6 a E N\ 31 -20 0 10 100 1k 40k 100k 100 1k 10k FREQUENCY (Hz) LOAD RESISTANCE (9) 100k OPEN-LOOP GAIN {dB) INPUT BIAS CURRENT | vs TEMPERATURE 4s Vg = +15V 44 4.3 4.2 4A 4.0 3.9 3.8 INPUT BIAS CURRENT (nA) 3.7 3.6 3.5 -75 -50 -25 0 25 50 TEMPERATURE (C) 75 100 OPEN-LOOP GAIN AND PHASE SHIFT vs FREQUENCY 140 1 Ty = 25C 420 Vg=+15V _ Ry = 100k too NN Q so f= S 90 40 4 IN \ 135 20 NX 180 0 N 04 1 10 17000 k 10k 100k FREQUENCY (Hz) OUTPUT VOLTAGE SWING vs LOAD RESISTANCE POSITIVE = 2 = NEGATIVE 5 & 3 100 1k 10k LOAD RESISTANCE (9) 125 PHASE SHIFT (DEG) 100kOP-290 TYPICAL PERFORMANCE CHARACTERISTICS Continued . POWER SUPPLY REJECTION vs FREQUENCY Teel TT NEGATIVE SUPPLY is 3 IN a z= z Q 8 NN N 4 400 . N Ww h NS\.. POSITIVE SUPPLY N > INQ " a a NY a > 80 NI a NY! a Ww = NQ 2 60 LY atl 40 1 10 100 1k FREQUENCY (Hz) CURRENT NOISE DENSITY vs FREQUENCY = o Ty = 25C Vg = +15V CURRENT NOISE DENSITY (pA/, Hz ) ou Ss FREQUENCY (Hz) BURN-IN CIRCUIT COMMON-MODE REJECTION vs FREQUENCY TTT Ta = 25C Vg = +15V ~ s = rs S = S o Ns o COMMON MODE REJECTION (dB) a o 1 10 100 1k 10 100 1k FREQUENCY {Hz} SMALL-SIGNAL TRANSIENT RESPONSE _ ia Py 20mV 100s C, = 500pF NOISE VOLTAGE DENSITY vs FREQUENCY 1,000 Ta = 25C Vg = +15 NOISE VOLTAGE DENSITY (nV/, Hz ) 3 o 0.1 1 10 100 1k FREQUENCY (Hz) LARGE-SIGNAL TRANSIENT RESPONSE - Pa ea Lleol stele eee =a 20neee Ta = 25C Vg = +15V Ay=+1 Ry = 10k C= 500pF CHANNEL SEPARATION TEST CIRCUIT +18V 100k g 2000 3 100kN -18V +15V -15V pO V1 20V,., @ 10Hz v1 CHANNEL SEPARATION - 20 LOG v2/1000OP-290 APPLICATIONS INFORMATION BATTERY-POWERED APPLICATIONS The OP-290 can be operated on aminimum supply voltage of +1.6V, or with dual supplies of +0.8V, and draws only 19zA of supply current. In many battery-powered circuits, the OP-290 can be continuously operated for thousands of hours before requiring battery replacement, reducing equipment down- time and operating cost. High-performance portable equipment and instruments fre- quently use lithium cells because of their long shelf-life, light weight, and high energy density relative to older primary cells. Most lithium cells have a nominal output voltage of 3V and are noted for a flat discharge characteristic. The low supply voltage requirement of the OP-290, combined with the flat discharge characteristic of the lithium cell, indicates that the OP-290 can be operated over the entire useful life of the cell. Figure 1 shows the typical discharge characteristic ofa 1Ah lithium cell powering an OP-290 with each amplifier, in turn, driving full output swing into a 100kN load. INPUT VOLTAGE PROTECTION The OP-290 uses a PNP input stage with protection resistors in series with the inverting and noninverting inputs. The high breakdown of the PNP transistors coupled with the protec- tion resistors provides a large amount of input protection, allowing the inputs to be taken 20V beyond either supply without damaging the amplifier. SINGLE-SUPPLY OUTPUT VOLTAGE RANGE In single-supply operation the OP-290s input and output ranges include ground. This allows true zero-in, zero-out operation. The output stage provides an active pull-down to around 0.8V above ground. Below this level, aload resistance of up to 1MQ to ground is required to pull the output down to zero. Inthe region from ground to 0.8V the OP-290 has voltage gain equal to the data sheet specification. Output current source capability is maintained over the entire voltage range includ- ing ground. APPLICATIONS TEMPERATURE TO 4-20mA TRANSMITTER Asimple temperature to 4-20mA transmitter is shown in Figure 2. After calibration, the transmitter is accurate to +0.5C over the-50C to +150C temperature range. The transmitter operates from + 8V to + 40V with supply rejection better than 3ppm/V. One half of the OP-290 is used to buffer the Vremp pin, while the other half regulates the output current to satisfy the current summation at its noninverting input: Vreme (Ret R7) V ( Rot Ret R7 ) - Vser | R2 Rio Ro Rig lout LITHIUM SULPHUR DIOXIDE CELL VOLTAGE (VOLTS) Ny 0 Q 500 1000 1500 2000 2500 3000 3500 HOURS FIGURE 1: Lithium Sulphur Dioxide Cell Discharge Characteristic With OP-290 and 100k0 Loads The change in output current with temperature is the deriva- tive of the transfer function: AVTEMP Alout AT AT Ro Rio (Ret Ry) From the formulas, it can be seen that if the span trim is adjusted before the zero trim, the two trims are not interactive, which greatly simplifies the calibration procedure. Calibration of the transmitter is simple. First, the slope of the output current versus temperature is calibrated by adjusting the span trim, R7. Acouple of iterations may be required to be sure the slope is correct. Once the span trim has been completed, the zero trim can be made. Remember, that adjusting the offset trim will not affect the gain. The offset trim can be set at any known temperature by adjusting Rs until the output current equals: Ales lout = (| ) (TaMBIENT ~ Tmin) + 4mA ATOPERATING Table 1 shows the values of Rg required for various tem- perature ranges. TABLE 1 TEMP RANGE Re 0C to +70C 10k -40C to +85C 6.2k -55C to + 150C 3kOP-290 1N4002 i-ovs I +8V TO +40V Vin te >. 2 Vout REF-4382 3 Ra Vremp pVWVV + 4 gq 10kN Ry GND x 100kN 5k0 SPAN TRIM MAA Ry Skn. 2N1711 ALL RESISTORS 1/4W, 5% UNLESS OTHERWISE NOTED Bio 1000, 1%, 1/2W lout Roan FIGURE 2: Temperature to 4-20mA Transmitter VARIABLE SLEW RATE FILTER The circuit shown in Figure 3 can be used to remove pulse noise from an input signal without limiting the response rate to a genu- ine signal. The non-linear filter has use in applications where the input signa! of interest is known to have physical limitations. An example of this is a transducer output where a change of tem- perature or pressure cannot exceed a certain rate due to physi- cal limitations of the environment. The filter consists of a com- parator which drives an integrator. The comparator compares the input voltage to the output voltage and forces the integrator output to equal the input voltage. A, acts as a comparator with its output high or low. Diodes D, and D, clamp the voltage across R, forcing a constant current to flow in or out of C,. R, Cc, and A, form an integrator with A,'s output slewing ata maximum rate of: Vp _ (0.6 RC, R30, Maximum slew rate = For an input voitage slewing at a rate under this maximum slew rate, the output simply follows the input with A, operating in its linear region. - -15V DIODES ARE 1N4148 FIGURE 3: Variable Slew Rate FilterOP-290 LOW OVERHEAD VOLTAGE REFERENCE Figure 4 shows a voltage reference which requires only 0.1V of overhead voltage. As shown, the reference provides a stable +4.5V output with a +4.6V to +36V supply. Output voltage drift is only 12ppm/C. Line regulation of the ref- erence is under 5uV/V with load regulation better than 10unV/mA with up to 50mA of output current. The REF-43 provides a stable 2.5V which is multiplied by the OP-290. The PNP output transistor enables the output voltage to approach the supply voltage. Resistors R; and Ro determine the output voltage: Re Vout = 2.5V ( 1 +) 1 The 2002 variable resistor is used to trim the output voltage. For the lowest temperature drift, parallel resistors can be used in place of the variable resistor and taken out of the circuit as required to adjust the output voltage. 10- is Vin REF-43FZ Vout 2N2907A pO Vout Lc, . 10uF 7 O1pF Rip le & 2000, 20-TURN BOURNS 3006P-1-201 FIGURE 4: Low Overhead Voltage Reference