OP90FZ

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3 ANALOG Precision, Low Voltage Micropower

FEATURES suit it for battery and solar powered applications, such as +0.8Vto:18V ORDERING INFORMATION ' True Single-Supply Operation; Input and Output eee: om: Voltage Ranges Include Ground —___ PACKAGE © Low Supply Current ...sssessesssssssessesesesserseeee 2OUA Max Vera cCERDIP PLASTIC Lee mvtsealbaned fc © OUtStANdING PSRR w.esecssssssssseseesesssssnreeesesses SGUV/V Max 150 OPS0EZ - - IND e Standard 741 Pinout with Nulling to V- eo OP90FZ opsoce 7 xn e Available in Die Form 450 - ent - XIND GENERAL DESCRIPTION * Fordevices processed in total compliance to MIL-STD-883, add /883 after part number. Consult factory for 883 data sheet The OP-90 is a high performance micropower op amp that —t_Burn.inis available on commercial and industrial temperature range parts in operates from a single supply of + 1.6V to +36V or from dual CerDIP, plastic DIP, and TO-can packages. supplies of +0.8 to +18V. Input voltage range includes the tt For availability and burn-in information on SO and PLCC packages, contact negative rail allowing the OP-90 to accommodate input your local sales office, signals down to ground in single supply operation. The OP-90's output swing also includes ground when operating PIN CONNECTIONS from a single supply, enabling “zero-in, zero-out” operation. 33 The OP-90 draws less than 204 of quiescent supply current, vom ing a ERE EF: while able to deliver over SmA of output current to a load. aN a> fs] our ea) 5) 0) Input offset voltage is below 150,V eliminating the need for - aaa a five external nulling. Gain exceeds 700,000 and common-mode we fa we rejection is better than 100dB. The power supply-rejection 8-PIN HERMETIC DIP we or ratio of under 5.6uV/V minimizes offset voltage changes (Z-Suffix) ame” experienced in battery powered systems. 8-PIN EPOXY MINI-DIP gage The low offset voltage and high gain offered by the OP-90 (P-Suffix) OP-90 ARC/883 bring precision performance to micropower applications. 8-PIN SO (S-Suffix) LCC (RC-Suffix) The minimal voltage and current requirements of the OP-90 SIMPLIFIED SCHEMATIC ow a | 4 a cn | “ nu o om ©) ® @ “ELECTRONICALLY aDJUSTEO ON CHIP Fon mnauw Orraet vouRor ove -4-

ABSOLUTE MAXIMUM RATINGS (Note 1) Junction Temperature (7) sssseeesneeesninsessneseses —BS°C tO +150°C Common-Mode Input Voltage SS ceestettttitsstensseseesesesstsittitisesasssessseee {(V=) — 20V] to [(V4) + 20V] 8-Pin Hermetic DIP (2) 148 16 “cw Output Short-Circuit Duration «0.0... Indefinite 8-Pin Plastic DIP (P) 103 43 “CW Storage Temperature Range 20-Contact LCC (RC) 98 38 "cw Z PACKAGE «..eseescssseceseeerseeessseesesseessnnetsseeses —B5°C to +150°C &-Pin SO (S) 158 43 “cw Operating Temperature Range 1, Absolute maximum ratings apply to both DICE and packaged parts, unless other- OP-BOA ercsrnrntnnenrnnemennenennenennenes SBC 10 4125°C Wise ne dtor ming contions vespecified or evi 7 7 05° " . @,, is speci ‘worst case mounting conditions, i.e., @,, is spec device or QOE, OP-Q0F o..escseesssnesessneessnncscsnseeesnnees ae to eae int ‘or CerDIP,P-OIP, and LCC packages: 0's Ye cciied for device sok OP-90G o.nceseceneensesssesssssseisesnteeneeneesnees “40°C t0 +8 dodo printed ret boar for 80 package pect ELECTRICAL CHARACTERISTICS at Vg = +1.5V to +15V, Ta = + 25°C, unless otherwise noted. OP-90A/E OP-90F OP-90G PARAMETER SYMBOL CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS Input Offset Vollage Vos — 50 180 - 7% 250 = 5 450 Ww Input Offset Current los Vom = OV — 04 3 — 04 5 — 04 5 nA input Bias Current Ip Vom = OV — 40 15 — 40 20 — 40 26 nA Vg = £15V, Vo = + 10V Ry = 100kn 700 1200 - 500 1000 ~ 400 800 ~ RL= 10ko 350 600 - 250 500 - 200 400 - Large Signal Avo Ry = 2kn 125 250 _— 100 200 _ 100 200 - wmv Voltage Gain Vi=5V,V-=0v, 1V<Vo<4V RL = 100k 200 400 — 125 300 wo 2500 Ry = kn 100 180 _ ~ 140 _ 70 140, - Input Voltage Range IVA Vo=+15V (Note2) 16/135 0 — 6/185 — 8S v Vg = +15V Vo RL= 10k0 44 24200 — am ame 0 = a4 sue = v R= 2k am ate = an 312 en #2 V+ = 8V, V-=0V Output Voltage Swing Von RL =2k0 40 420 = 40 420 = 40. 420 = v , Vi =5V,V-=0V v OL Ry = 10k = 100 500 — 100 500 — 0 so " V+ =5V, V- = OV, ‘Common Mode cur OV < Voy <4V 9 me ~ 80100 ~ 80100 ~ 8 Rejection Vg = 215V, _ _ i “BV = Voy) < 13.5 100 130 90 © 120 90 120 Power Supply — - = VN Rejection Ratio PSRR 1.0 56 1.0 56 3.2 10 # Slew Rate sR Vg = +15V 5 12 = 5 12 - 5 12 - v/ms Vs = £15V - 9 15 - 9 16 - 9 6 ‘Supply Current Isy Vg=+15V ~ 420 - 1420 - 420 HA . Aya 41 Capacitive Load No Oscillations 260 650 — 250 650 — 250 650 pF Stability (Note 1) 7 - fg = 0.1Hz to 10Hz Input Noise Voltage enp-p =st6v - 3 = - 3 = - 8 = Vp-p Input Resistance _ _ _ _ _ 4 _ Differential Mode Fin Vs==18V 80 a 80 30 Me Input Resistance . _ _ Se og _ Common Mode Row Vers 16V 20 - - oo Ga NOTES: 1. Guaranteed but not 100% tested. 2. Guaranteed by CMR test. -2-

ELECTRICAL CHARACTERISTICS at Vs = +1.5V to +15V, -55°C = Ty = 125°C, unless otherwise noted. OP-90A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Input Offset Voltage Vos - 80 400 av Average input Offset a Voltage Drift TCVos 08 28 avec Input Offset Current los Vow= ov - 18 5 nA Input Bias Current lp Vom= 0V - 40 20 nA Vg = #18V, Vo = #10V Ry = 100k. 225 400 ~ RL = 10k 125 240 - Large Signal RL=2k0 50 ro - Avo a a vimv Voltage Gain V+=5V, V-=0v, W<Vo<4¥ Ry = 100k. 100 200 - Ry = 10k0 50 110 - i] ii Ri ivi _ v input Voltage Range R Veo 6 (Note 1) “5108 7 7 Vg =215V Vo Ry = 10Ke 21350 4137 - v R= 2ko 2105 #5 - Output Voltage Swing y Vi = 5v, Vee ov y on Ry = 2k0 39 44 = V+=6y, V-=0V Vou RL= 10k - 100 500 ww V+ = SV, V-= OV, OV < Voy. <3.5V 85 105 = Common Mode Rejection cM Wg EIBV, BV © Veg 188 os ite 8 Power Supply - 32 Rejection Ratio PSRR i WN Vs =£1.5V - 15 25 Supply Current Igy ven v - is ’o uA NOTE: 1. Guaranteed by CMR test.

ELECTRICAL CHARACTERISTICS at V,, = +1.5V to +15V, 25°C = T, = +85°C for OP-90E/F, 40°C = T, = +85°C for OP-90G, unless otherwise noted. OP-S0E OP-90F OP-90G PARAMETER SYMBOL CONDITIONS MIN) TYP MAX MIN. TYP) MAX MIN. TYP MAX — UNITS Input Offset Voltage Vos — 70 270 — 10 560 — 10 wv ‘Average input Offset - 0s 2 — 06 - Avie Voltage Det TCVog : 5 2 8 Whe Input Offset Current los Vou = ov — 08 3 — 1.0 5 - 3 7 nA Input Bias Current lp Vou = OV — 40 8 — 40 2 - 40 8 nA Vg = #15V, Vo = 10V R= 100k 500 800 — 350-7000 — 300 600 — R= 10k. 250 4000 — 17 380 0 2500 Large Signal No FiL= 20d 100 200 7% 1900 9% —~ Wmy Voltage Gain Vreev. vezov. — WE Vg<4V RL = 100k0 150 2800 — joo 220 2 160 RL= 10k. on 50 10 — 4 9 — \\ 7 v nput Voltage Range IVA Ve=215V (Note1) 15/35 — — 19/185 8S Vg = #15V Yo RL~ 10k. 495 4% AH 250 2m A 250 240 = v AAL= 2k $05 ne — 405 Lie - 40S ine — ; V+ =8v, v= 0v Output Voltage Swing Vow AL= 2k 30 4a 39 4a 3944 v y Vi =6V, V-=0v y oF Ru= 10k = 100 500 — wo 500 — wo suo ia Vi =5V,V =oy, h d wo wo 0 wo ~ ‘Common Mode cmp OV <Vow<38V sre % m0 ae Rejection Vs = £15¥, voy < Vays 185 100 120 a 0 Ww Power Supply _ _ 7 Rorection Ratio PSRA — 10 56 32 0 56 178 Wn Supply Currant ‘oy Vg = 415V - 7 8 - wv 3% - 6 30 HA NOTE: 1. Guaranteed by CMR test. -4-

sega] 4. Vog NULL 7 : 2. -IN Sos Sue = 4.V- ce ices Ser in A q fag Loree i) 5. Vos NULL We Se eas: Pe Sree & OUT = ews 2 mi Sn ar Gil Cees eee as ra DIE SIZE 0.086 x 0.067 inch, 5762 sq. mils (2.18 x 1.70mm, 3.71 sq. mm) WAFER TEST LIMITS at Vs = ++1.5V to +15V, Ta = 25°C, unless otherwise noted. OP-90GBC PARAMETER SYMBOL CONDITIONS Limit UNITS Input Offset Voltage Yos 250 nV MAX Input Offset Current los Vom — OV 5 nA MAX Input Bias Current Ip Vow = OV 20 nA MAX Vg ~ #18V, Vo = #10V R= 100k 500 WmV MIN Large Signal R= 10k0 250 Voltage Gain Avo

9 V+= SV, V- =0V,

WV <Vo<4V vim MIN Ry = 100k. 125 V+ =5V, V-=0V oa Input Voltage Range vr Ven aisv (Note 1) w/t vMIN V5 = 418V Vo RL = 10kQ2 +4 VMIN R= 2k0 aH Output Voltage Swing y Vin bv. v_nov van ‘OH Ru=2ko 40 Vi=5v,V-=0V x Vou RL = 10k 500 ov MA V# = SV, V- = OV, OV < Voy <4V 80 Common Mode Rejection cMR Vga d16V, IBV < Vou < 88V 0 4B MIN Power Supply Rejection Ratio PSRR 0 BWV MAX Supply Current Isy Vs = 218V 20 uA MAX NOTES: 1. Guaranteed by CMR test. Electrical tests are pertormed 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 a

TYPICAL PERFORMANCE CHARACTERISTICS rye TEMPERATURE Ne TEMPERATURE. __ MS TEMPERATURE™ ca P= TTT “OT i, aC BLT Tt et | BL) BE & 5 , F CUA BLEED) petro a Pipi ey 4 7) steer | Sts -0 250 es 80 78 10) us ra = -I ID vo TEMPERATURE SINGLE-SUPPLY VOLTAGE PHASE SHIFT ve FREQUENCY vs TEMPERATURE soo wo — Fae ees) A oo 7 3 7] gw LL. os oe > se ap tt. Heeetoed ECC ASE 3 “4 a E SoaGecae caesee= eee Pj i=, a Nt Red “eer Pee | HEIRS . iE SWING oe FREQUENCY ONS LOAD RESISTANCE | ea LOAD RESISTANCE 1 . =) Th He Hi ee re LA ate Tl TOM crater) EGA : a bana NAL 00 AF . ay ee a CTT CCE Petco -6-

TYPICAL PERFORMANCE CHARACTERISTICS POWER SUPPLY REJECTION COMMON-MODEREJECTION NOISE VOLTAGE DENSITY vs FREQUENCY vs FREQUENCY vs FREQUENCY SLI) US SS Taare s WK one ye Ht Sti g pSuinaiiigail ELIE ; hi Fo LIN ol a 8 wo hh 5 FHSS 3 | N cositve surewy g wlll i Ceo 2. Tw | 3, Tw 4 HE i SU ; 2 COCCI F hh 3 & PERE Ete 3 mn. 3 H Eee CUTIES esi » a »LLUT TT TT TT 4 0 100 tk 1 10 08 tk or 1 0 106 + FREQUENCY (Hz) FREQUENCY (#3) FREQUENCY (Hz) CURRENT NOISE DENSITY SMALL-SIGNAL LARGE-SIGNAL vs FREQUENCY TRANSIENT RESPONSE TRANSIENT RESPONSE Fy aaa mee [J.T ge Pee EAI HA : ee e TTT Pe mam

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Ra . " Pe way Nord ie arian a rteo all TT Ti C= stn Cc sop 1 0 “00 ” FREQUENCY (Hz) “ BURN-IN CIRCUIT APPLICATIONS INFORMATION BATTERY-POWERED APPLICATIONS The OP-90 can be operated on a minimum supply voltage of sev +1.6V, or with dual supplies +0.8V, and draws only 144A of 7 supply current. In many battery-powered circuits, the OP-90 2 7 can be continuously operated for thousands of hours before A requiring battery replacement, reducing equipment down- vu High-performance portable equipment and instruments fre- + if quently use lithium cells because of their long shelf-life, light ev 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-90, combined with the flat discharge characteristic of the lithium cell, indicates that the OP-90 can be operated over the entire useful life of the cell. Figure 1 shows the typical discharge characteristic of a 1Ah lithium cell powering an OP-90 which, in turn, is driving full output swing into a 100k load.

ing the noninverting input more than 300mV below the and negative ramps. The integrator is bounded by A2 which inverting input. Without the diode, such spikes could cause acts as a Schmitt trigger with a precise hysteresis of 1.67 phase reversal of the OP-90 and possible latch-up of the volts, set by resistors R5, R6, and R7, and associated CMOS transmitter. Compliance of this circuitis from 10V to 40V. The switches. The resulting output of A1 is a triangle wave with voltage reference output can provide up to 2mA for trans- upper and lower levels of 3.33 and 1.67 volts. The output of A2 ducer excitation. is a square wave with almost rail-to-rail swing. With the com- jonents shown, frequency of operation is given by the MICROPOWER VOLTAGE-CONTROLLED OSCILLATOR eeuation: quency 01 0p gwen OY Two OP-90s in combination with an inexpensive quad CMOS . switch comprise the precision VCO of Figure 8. This circuit Sout = Vcontrot (volts) x 10H2/V provides triangle and square wave outputs and draws only a ty ch | | . anged by varying C1. The circuit operates 50uA from a single SV supply. A1 acts as an integrator, $1 Ut this is easily changed by varying it op 7 i a well up to a few hundred hertz. switches the charging current symmetrically to yield positive FIGURE 8: Micropower Voltage Controlled Oscillator cr ov aan Foon *O! Ww 2 z G © SQUARE ms d our 53 ao 6 ook. 2000 ‘TRIANGLE ‘our = 8 O+sv 200K coacee in/out von [0 te [=] ™ Lew conr| = ouran eH cont | | o a cont ouran -10-

MICROPOWER SINGLE-SUPPLY SINGLE-SUPPLY CURRENT MONITOR INSTRUMENTATION AMPLIFIER Current monitoring essentially consists of amplifying the The simple instrumentation amplifier of Figure 9 provides voltage drop across a resistor placed in series with the cur- over 110dB of common-mode rejection and draws only 154A | rent to be measured. The difficulty is that only small voltage of supply current. Feedback is to the trim pins rather than to drops can be tolerated and with low precision op amps this the inverting input. This enables a single amplifier to provide greatly limits the overall resolution. The single-supply cur- differential to single-ended conversion with excellent rent monitor of Figure 10 has a resolution of 10uA and is common-mode rejection. Distortion of the instrumentation capable of monitoring 30mA of current. This range can be amplifier is that of a differential pair, so the circuit is res- adjusted by changing the current sense resistor R1. When tricted to high gain applications. Nonlinearity is less than measuring total system current, it may be necessary to 0.1% for gains of 500 to 1000 over a 2.5V output range. Resis- include the supply current of the current monitor, which tors R3 and R4 set the voltage gain and, with the values bypasses the current sense resistor, in the final result. This shown, yield a gain of 1000. Gain tempco of the instrumenta- current can be measured and calibrated (together with the tion amplifieris only 50ppm/°C. Offset voltage is under 1502V residual offset) by adjustment of the offset trim potenti- with drift below 2uV/°C. The OP-90's input and output vol- ometer, R2. This produces a deliberate offset that is tempera- tage ranges include the negative rail which allows the instru- ture dependent. However, the supply current of the OP-90 is mentation amplfier to provide true “zero-in, zero-out” also proportional to temperature and the two effects tend to operation. track. Current in R4 and R5, which also bypasses R1, can be accounted for by a gain trim. FIGURE 9: Micropower Single-Supply Instrumentation Amplifier FIGURE 10: Single-Supply Current Monitor ve sv 9 ? +0 ‘ © our © Vour= 10OmVimA (rest) Ea RS 00S 100K! -1-

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