OP-97 AD | Alldatasheet
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| ANALOG Low Power, High Precision FEATURES GENERAL DESCRIPTION . on oupely gurrent sovsernesaenmnrnesnnrerrrrnes BOOHA MBX The OP-97 is a low-power alternative to the industry-standard * OP.07 Type Performance Vv Ma OP-07 precision amplifier. The OP-97 maintains the standards orest yorage Dg nee x of performance set by the OP-07 while utilizing only 60014 “Vv He Bi ns i eens Op fax supply current, less than 1/6 that of an OP-07. Offset voltage is ery Low Blas Curren AM: an ultra-low 25nV, and drift over temperature is below 0.61V/°C. TEC ESO rarer, 2SOpAMax —_ Extemaloffsttrimmingisnotrequiredinthe majority ofcrcuits, * High Common-Mode Rejection oo... 1140B Min + Available in Die Form PIN CONNECTIONS ORDERING INFORMATION * nou Of ean — PACKAGE ‘OPERATING ww C= ve nou 1 ave tema “oN b> be our 10-99 CERDIP PLASTIC RANGE ve | = oven, ‘OPO7AS" ‘OPOTAZ = mL me sou OP97EJ OPo7EZ oPo7EP XIND OPO7FS OPa7FZ OP97FP XIND EPOXY MINI-DIP 4N3 5 oven, ~ - ope7rstt XIND (P-Sutfix) vecease) * Fordevices processed in total compliance to MIL-STD-883, add /883 after part 8-PIN CERDIP number. Consult factory for 883 data sheet. (Z-Sutfix) TO-99 t Burnin available on commercial and industrial temperature range parts in (u-Sutfix) CerDIP, plastic DIP, and TO-can packages. EPOXY SO++ tt For availability and burn-in information on SO and PLCC packages, contact (S-Suffix) your local sales office. SIMPLIFIED SCHEMATIC nue oy nue) ovencour ov f | a. 7 © Your ov -1-
Improvements have been made over OP-07 specifications in Output Short-Circuit Duration... Indefinite several areas. Notable is bias current, which remains below Operating Temperature Range 250pA over the full military temperature range. The OP-97 is OP-97A (J, Z) cecsessescescsesesseereerersteeessnsetseeee 95°C tO +125°C ideal for use in precision long-term integrators or sample-and- OP-97E, F (J, P, Z, S) ssessssssnensnenennnnnns ~40°C 0 +85°C Common-mode rejection and power-supply rejection are also qunetion Temperature Range seteeenneeeenteseete B5PC tO “A506 of common-mode or supply voltage. Outstanding PSR, a PACKAGE TYPE 1 (Note 2) 8% UNITS supply range specified from £2.25V to +20V and the OP-97's jouw minimal power requirements combine to make the OP-97 a “pPintiomelc DIP @ ‘ae ‘@0 ew preferred device for portable and battery-powered instruments. SfinHermetic IP @) NB 8-Pin Plastic DIP (P) 103 43 cw The OP-97 conforms to the OP-07 pinout, with the null ‘epnso®) 168” 43” ~~ GW potentiometer connected between pins 1 and 8 with the wiper eS to V+. The OP-97 will upgrade circuit designs using 725, OP05, noes ‘i ‘i 1y to both DICE and packaged parts, unloes P07, OP12, and 1012 type amplifiers. It may replace 741-type * Oherwise noted ee ePY'® ana pacnaged paneun amplifiers in circuits without nulling or where the nulling 2 @,, is specified for worst case mounting conditions, i6., 4 i8 specified for circuitry has been removed. device in socket for TO, CerDIP, and P-DIP packages; ©, is specified for device soldered to printed circuit board for SO package. 3. For supply voltages less than +20V, the absolute maximum input voltage is ‘equal to the supply voltage. ABSOLUTE MAXIMUM RATINGS (Note 1) 4, The OP-97's inputs are protected by back-to-back diodes. Current-limiting re- Supply VoMtage ...ssssssssesseesssssessesssceecesecsessenssssensssersnssessse £2OV sistors are not used in order to achieve low noise. Differential input voltages ELECTRICAL CHARACTERISTICS at Vs = +15V, Vom = OV, Ta = +25°C, unless otherwise noted. OP-97A/E OP-97F PARAMETER SYMBOL CONDITIONS MIN TYP MAX MIN Tye MAX UNITS Input Offset Voltage Vos - 10 25 = 30 75 Ww Long-Term Offset Voltage AVos/Time = 03 - - 03 - #W/Month Stability Input Offset _ Current los - 30 100 30 150 pA input Bias Ig - £30 +100 - +30 £150 pA Current Input Noise _ _ _ _ Voltage eno O.1Hz to 10Hz 05 05 pp Input Noise to = 10Hz (Note 2) - 7 30 - 7 30 nV JAZ Voltage Density fo = 1000Hz (Note 3) = 4 22 - 4 22 nvi/Az Gurren Density to = 10Hz 20 oa tay Large-Signal a 3 2 ~ — Voltage Gain Avo Vo = £10V; Ry = 2k. 300 2000 200 2000 i wmv Common-Mode - _ _ Rejection CMR Vom = £13.5V 4 132 : 110 a _ dB Power-Supply PSR Vg = +2V to +20V 114 132 - 110 192 - 4B Rejection a _ ‘input Voltage WA (Note 1) 413.5 4140 - 413.5 £140 - v Range 7 Output Volt — —— pa verage ye Ry = 100. M13 a - ts a4 vo Slew Rate SR os 02 = or 02 = Wus -2-
ELECTRICAL CHARACTERISTICS at Vs = +15V, Vow = OV, Ta = +25°C, unless otherwise noted. (Continued) OP-97A/E OP-97F PARAMETER SYMBOL _ CONDITIONS MIN TYP MAX MIN, TYP MAX ——_UNITS Differential Input Resistance "IN (Note 4) 30 ~ 7 30 ~ ~ ma Closed-Loop Banawisth Bw Mow = +1 oa 09 - oa 09 - Miz Supply Current __Igy ~ 380 600 - 380 600 uA Supply Voltage Vs Operating Range +2 £15 +20 +2 +15 +20 v NOTES: 1. Guaranteed by CMR test. 2. 10Hz noise voltage density is sample tested. Devices 100% tested for noise are available on request. 3. Sample tested. 4. Guaranteed by design. ELECTRICAL CHARACTERISTICS at Vg = #15V, Voy = OV, 40°C < T, < +85°C for the OP-97E/F and -55°C < T, < +125°C for the OP-97A, unless otherwise noted. OP-97A/E OP-97F PARAMETER SYMBOL CONDITIONS MIN TYP MAX MIN TYP MAX —_UNITS Input Offset Voltage Vo: s - 25 60 - 60 200 pV Average Temperature - 02 06 - 03 20 « Cootficiont of Vog TVs S-Packago - - - - 03 - wre Input Offset Current los. 60 250 - 80 750 pA Average Temperature . Coofficiont of | TClyg - 04 25 - 06 75 parc Input Bias Current I, +60 +250 +80 ‘+750 pA Avorage Temperature , Costhciont at | Tel, - 04 25 - 06 75 parc Large-Signal a. . . Vottage Gain Avo Vo = H10V;R, = 2k 200 1000 150 1000 vimv Common-Mode cur Voy=ti3.5V 108 128 - 108 = 128 - 48 Rejection OM Power-Supply PSR Vg =42.5V 102200 108 126 - 108 128 - 8 Rejection 's Input Voltage wR (Note 1) 413.5 414.0 - 4135 414.0 - v Range Output Voltage . Swing Vo Ry = 10k82 4190414 - a9 414 v Stew Rate sa 005 0.18 - 005 0.18 - Vins Supply Current Igy = 400 800 = 400 800 HA Supply Voltage Vs Operating Range 22.5 £15 #20 £25 215 £20 v NOTES: 1. Guaranteed by CMR test.
I 5 pepe 4. NULL { [thew jefe Fy 4 2. INVERTING INPUT ail a 3. NONINVERTING INPUT yr ae oe J) mas =) 5, OVERCOMPENSATION gen UF ~ 6. OUTPUT EP yi ie IS 7 VE f a eS 8. NULL DIE SIZE 0.063 X 0.074 inch, 4,662 sq. mils (1.60 X 1.88 mm, 3.01 sq. mm) WAFER TEST LIMITS at Vs = +15V, Vow = OV, Ta = +25°C, unless otherwise noted. OP-97N PARAMETER ‘SYMBOL CONDITIONS LIMITS: UNITS Input Offset Voltage Vos 250 uN MAX Input Offset Current log 150 PA MAX Input Bias Current Ig £150 pA MAX Large-Signal Votiege ln Avo Vout = £10V, Ry = 2k. 120 Vimy MIN ‘Common-Mode Rejection om Vow = 2135 _ no 68 MIN Power-Supply Rejection PSR Vg = +2V to +20V 110 OB MIN Input-Voltage Range IVR (Note 1) $13.5 VMIN Output Voltage Swing Vo Ry = 10k 43 _YMIN Slew Rate sR oa ius MIN Supply Current Igy No Load 600 uA MAX 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. -4-
TYPICAL PERFORMANCE CHARACTERISTICS TYPICAL DISTRIBUTION TYPICAL DISTRIBUTION TYPICAL DISTRIBUTION OF INPUT OFFSET VOLTAGE OF INPUT BIAS CURRENT OF INPUT OFFSET CURRENT Saad ~ ~ | . fh : ie aoe co , a *w f ° L | os) | a — home i’ Coa ~40, 20 ° 20 0 100 $0 ° 50 00 “60-40-20 0 =O INPUT BIAS, OFFSET INPUT BIAS, OFFSET CURRENT vs INPUT OFFSET VOLTAGE CURRENT vs TEMPERATURE (COMMON-MODE VOLTAGE WARM-UP DRIFT Te jel T= 111 « «° = sal vew=ov pp tt Le nn £ = | = B= Zs : WWE JT Ea 3-0 \\ 3 -w 8 ‘ TTT} og. “ “ “KL wa ttt ty ot INN EFFECTIVE OFFSET VOLTAGE EFFECTIVE TCVos vs SHORT CIRCUIT CURRENT vs SOURCE RESISTANCE SOURCE RESISTANCE vs TIME, TEMPERATURE wn _IBSOURCERESISTANCE = _SOURCERESISTARCE = rr — 9” Feaancen ontnsacnees ——— RT Tate) |i SOURCE RESISTANCE (0) ‘SOURCE RESISTANCE (0) TIME FROM OUTPUT SHORT (MINUTES) -5-
TYPICAL PERFORMANCE CHARACTERISTICS SUPPLY CURRENT vs COMMON-MODE REJECTION POWER-SUPPLY REJECTION SUPPLY VOLTAGE vs FREQUENCY vs FREQUENCY BOON EEL SPAN a | wy 80 o bpm EOOCUNS Pro OPEN-LOOP GAIN NOISE DENSITY TOTAL NOISE DENSITY vs LOAD RESISTANCE vs FREQUENCY vs SOURCE RESISTANCE pe ew Eg tem » cera) FREE @ Eee Bee I wg Ee i Zo | | Sr a Asay oF RAK tet ¢ 8 : AS + Fes} See? bl ob> EZ b Af Ss Ep ek se Vi) es acai ob bes 3 ; oe 1 2 5 10 20 1 0 400 4000, 102 103 t0* 105 108 107 108 MAXIMUM OUTPUT SWING MAXIMUM OUTPUT SWING OPEN-LOOP GAIN LINEARITY “ vs LOAD RESISTANCE s vs FREQUENCY y) TAL sem oA se fooss| BL RAS 2 / : \\ : AEE ESCM TT | CUTTIITTNI TTT (Ces IAI TT [PT pr | LAT “CCIE INST -6-
TYPICAL PERFORMANCE CHARACTERISTICS OPEN-LOOP GAIN, ‘TOTAL HARMONIC PHASE vs FREQUENCY DISTORTION SMALL-SIGNAL OVERSHOOT (Coc = OpF) PLUS NOISE vs FREQUENCY vs CAPACITIVE LOAD aN Sa Tyce
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eee [eae wm eee MEA TTI 00 tana - [aa EY ~ ff 0 ae 0 | a py og ria tiframr | o.o00r LE ETI TTC ° ill, TT me rouencyen) . “TREQUENCY he m * onpcamacranceery PHASE ve FREQUENCY SLEW RATE vs GAIN-BANDWIDTH PRODUCT (Coc = 100pF) OVERCOMPENSATION vs OVERCOMPENSATION ) SE oo 000 Te ST eee. | ; =e W | i FPS | “ft . == SNOT 2A é Hl S| \\ Bo» Eee oa i. CNA 2 ERE Gg Frio EID © foe lef =e ee Mes vrarniea lI Mill ee ICE Tn CRS Pe ueNSY OPEN-LOOP GAIN, PHASE vs FREQUENCY (Coe: = 1000pF) (Coo~ 10,000pF) RESISTANCE we FREQUENCY , Nu RS anes “less | Df | a Rr) 0 al US anne wos 7 g NI NK 32 RS i 3 = i. ee me ET Gece SA Pe ot a Ein EE LL nary tk 10k 100k 1M 10M 00 4k 10k 100k 1M 10M ooo 1 10 100 1k 0k 100k FREQUENCY (Hz) FREQUENCY (Hz) FREQUENCY (Hz) -)-
High impedance circuitry is extremely susceptible to RF FIGURE 10: Precision Programmable Gain Amplifier pickup, line-frequency hum, and radiated noise from switching power-supplies. Enclosing sensitive analog sections within SrarraL nur grounded shields is generally necessary to prevent excessive ° noise pickup. Twisted-pair cable will aid in rejection of line- vo | | frequency hum. (:2.5my 70 -10v, Ad pS Scar RANGE OepENDIn aa The OP-97 is an excellent choice as an output amplifier for (ON GAIN SETTING.) Fee . =~ higher resolution CMOS DACs. Its tightly trimmed offset vol- 1 LaF i a tage and minimal bias current result in virtually no degradation of linearity, even over wide temperature ranges. [~S Figure 9 shows a versatile monitor circuit that can typically a sense current at any point between the +15V supplies. This makes it ideal for sensing current in applications such as full OY mr bridge drivers where bi-directional current is associated with large common-mode voltage changes. The 114dB CMRR of the A 7 OP-97 makes the amplifier's contribution to common-mode etal error negligible, leaving only the error due to the resistor ratio => © Your inequality. Ideally, R2/R4 = R3/R5. This is best trimmed via R4. The digitally programmable gain amplifier shown in Figure 10 = has 12-bit gain resolution with 10-bit gain linearity over the 7 range of —1 to -1024. The low bias current of the OP-97 2 > maintains this linearity, while C1 limits the noise voltage bandwidth allowing accurate measurement down to microvolt ee _ levels. DIGITAL IN GAIN (Ay) FIGURE 11: Combination High-Speed, Precision Amplifier 4095 —1.00024 we 2048 -2 1024 —4 mo Ser 512 -8 fo 256 —16 “wo 1. 128 —32 y fa “64 wo vas [=> 0 Yr 32 —128 16 —256 = 8 512 NY ms 4 —1024 2 —2048 our 5 1 —4096 oar 0) OPEN LOOP Many high-speed amplifiers suffer from less-than-perfect low- $ frequency performance. A combination amplifier consisting of ahigh precision, slow device like the OP-97 and a faster device — such as the OP-44 results in uniformly accurate performance from DC to the high-frequency limit of the OP-44, which has a FIGURE 12: Combination Amplifier Transient Response gain-bandwidth product of 23MHz. The circuit shown in Figure 11 accomplishes this, with the OP-44 providing high-frequency amplification and the OP-97 operating on low-frequency signals » and providing offset correction. Offset voltage and drift of the ca circuit are controlled by the OP-97. I Fa 28 ~10-