OP37GN8 LINER | Alldatasheet
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- TECHNOLOGY Low Noise, High Speed Precision Operational Amplifiers FEATURES DESCRIPTION | ® Guaranteed 3.8nV/VH2 max 1kHz Noise The OP-27/O0P-37 series of operational amplifiers combine | = Guaranteed 5.5nV//Hz max 10Hz Noise outstanding noise performance with excellent precision and = Very Low Peak-to-Peak Noise, 80nV Typical high speed specifications. The wideband noise is only = Guaranteed 25pV max Offset Voltage 3nV/-~/Hz, and with the 1/f noise corner at 2.7Hz, low noise ™ Guaranteed 0.6.V/°C max Drift with Temperature is maintained for all low frequency instrumentation applica- ® Guaranteed 11V/psec min Slew Rate (OP-37) tions. Precision DC specifications match or exceed the best = Guaranteed 1 Million min Voltage Gain available op amps: offset voltage is 10,V, drift with temperature and time are 0.2uV/°C and 0.2uV/month, respectively; common mode rejection is 126dB, voltage gain is two million. The unity gain compensated OP-27 is an APPLICATIONS order of magnitude faster than other precision op amps. The = Low Level Transducer Amplifiers decompensated OP-37 is even faster at a gain-bandwidth ‘we _® Precision Threshold Detectors product of 63MHz and TV/ysec slew rate. These charac- = Tape Head Preamplifiers teristics plus Linear Technology’s advanced process and = Microphone Preamplifiers test techniques make the OP-27/ 37 an excellent choice for ™ Direct Coupled Audio Gain Stages performanoe and relent in a low wor. pesen ame ier applications. in addition, Linear's OP-37 is completely — latch-up free in high gain, large capacitive feedback con- figurations. The accurate, microvolt, low noise signal han- dling capabilities of the OP-27 /37 are taken advantage of in the multiplexed thermocouple application shown. For applications requiring higher performance, see the L11007 and LT1037 data sheets. rn Low Noise, Multiplexed Thermocouple Amplitier 0.1Hz to 10Hz Noise ‘TVPE oaecaroen 5.4y/°C AT O°C pas +, = A=10,000 S : | FANT fh : oureut 2 ' - ' Tre . too | |W my! WE = SINGLE POINT GROUND 4 6 ‘ w TIME (SECONDS) \\f 24 channels are multiplexed per second, and the output is required to settle to 0.1% accuracy, the amplifier’s bandwidth cannot be limited to less than 30Hz. Yet ww the noise contribution of the OP-27 will still be only 0.11z\\p-p, which is equivalent to an error of only 0.02°C. ee 7 @ Aue.” 1
a -_— ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION Operating Temperature Range wernt CaN PeeKace OP-27GH OP-37GH Junction Temperature Range nN Nh ed OP-270J8 OP-376J8 _ . _ 950 ° OP-27GJ8 OP-27GN8 OP-37AJ8 OP-37EN8 Storage Temperature Range HERMETIC UIP J8 PACKAGE OP-37CJ8 OP-37GN8 OP-27/0P-37A,C,E,G —65°C to 150°C PLASTIC DIP NB PACKAGE ELECTRICAL CHARACTERISTICS Vs = + 15V, Ta = 25°C, unless otherwise noted. OP-27A,E/OP-37A,E OP-27C,G/0P-376.6 SYMBOL | PARAMETER CONDITIONS MIN TYP MAX | MIN TYP MAX UNITS Aiime_| Stabuuty ls mA D 20 24 nA &n 0 THz to 70H2 (Notes 3 and 5) 008 018 HN" Input Norse Voltage f= 10Hz (Note 3) 35 55 38 80 av/VH2 Density ty =30Hz (Note 3) 31 45 33 56 a¥/VH2 fos 1000Hz (Note 3) 3038 32.45 | av/vie In Input Noise Current fo=10Hz (Notes 3 and 6) 17 40 17 pA/VHz Density fy =30Hz (Notes 3 and 6) 10 23 10 pA/VHz fo =1000Hz {Notes 3 and 6) 04 06 0.4 06 paA/VHz ss Ey GIR [Common Mode Recon Reto [Voy = = 110 1a 136 a PSRR Vg= = 4V to + 18V 100120 94 18 dB Ayo. | Large Signal Voltage Gain R= 2kQ, Vo= + 10V 1000-1800 7001800 vimv ; RL > 1k. Vo = + 10V 800 1500 1500 vim R, =6002, Vo= + 1V 250 700 200 S00 V/mV Vs= 24V(Note 4) R, > 6008 £100 2115 #100 +115 v 0P-37 Aye. 2:5 (Note 4) tf 7 i "7 Was Product op-37 fy = 10kHz (Note 4) 48 63 46 63 MHz fg= 1MHz (Ayo, = 5} 40 40 MHZ 2 [Open Loop Ouput Resistance [Vp=0. =o 2 a
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ELECTRICAL CHARACTERISTICS v= = 15v, —55°C.<14< 125°C, unless otherwise noted. OP-27A/0P-37A OP-276/0P-37C SYMBOL | PARAMETER MIN TYP MAX MIN TYP MAX UNITS Vos Input Offset Voltage | (Note 1) | * | 30 60 70 300 Ww AVos Average Input {Note 7) 02 06 04 18 w/°C ‘ATemp. Offset Drift log Input OffsetCurrent [Cs 15 50 30 135 nA ig Input Bias Curent [| —i«édL=C = +20 +60 235 +150 nA Input Voltage Range [TC | 109 HTS #102 #115 Vv CMRR Common Mode Vom= + 10V 108 122 94 116 dB Rejection Ratio PSRR Power Supply Vg= +4 5V to + 18V 86 110 oB Rejection Ratio Avo. Large Signal Ry 2 2kQ, Vo= + 10V 600 1200 300 800 Vim Voltage Gain Vout Maximum Output RL = 2kQ 4115 £135 +105 £130 Vv Voltage Swing -_~ ELECTRICAL CHARACTERISTICS Vs=+15V, —25°C <T,<85°C, unless otherwise noted. OP-27E/OP-37E OP-27G/0P-376 SYMBOL CONDITIONS MIN TYP MAX MIN TYP MAX UNITS om Vos Input Offset Voltage | (Note 1) [@] 20 50 95 220 wv AVos Average Input (Note 7) o2 06 o4 18 weet ‘Blemp Offset Drift fos Taput Offset Curent | —SSSCSC~mS=C«S SY 0 50 0 135 7A is___| Inputs Curent [| za 26 28 =180 nA Input Voitage Range | sC«|CS TOS 118 +105 £118 Vv CMRR Common Mode Vom = + 10V 96 118 aB Rejectton Ratio PSRR Power Supply Vs= 44 5Vto + 18V 97 118 dB Rejection Ratio Avou Large Signal RL 2 2kQ, Vg= + 10V 750 1500 450 1000 Vémv Voltage Gain Vout Maximum Output RL = 2ka zi? 2136 =0 +133 Vv Voltage Swing The @ denotes the specifications which apply over full operating Note 4: Parameter is guaranteed by design and is not tested. temperature range. Note 5: See test circuit and frequency response curve for 0 tHz to 10Hz Note 1: Input Offset Voltage measurements are performed by automatic tester in Applications Information section. test equipment approximately 0.5 seconds after application of power. A Note 6: See test circuit for current noise measurement in Applications and E grades are guaranteed fully warmed up. Information section. Note 2: Long Term Input Offset Voltage Stability refers to the average Note 7: The Average Input Offset Drift performance is within the trend line of Offset Voltage vs Time over extended periods after the first Specifications unnulled or when nulted with a pot having a range of 8kQ 30 days of operation. Exciuding the initial hour of operation, changes in to 20k2. Vas during the first 30 days are typically 2.5xV—refer to typical pertorm- Note 8: ‘The OP-27/37's inputs are protected by back-to-back diodes. ance curve. ; Current limiting resistors are not used in order to achieve low noise. if am, Note 3: Sample tested. Contact factory for 100% testing of 10Hz voltage differential input voltage exceeds = 0.7V, the input current should be noise. limited to 26mA. Enea
TYPICAL PERFORMANCE CHARACTERISTICS Input Wideband Voltage Noise vs Bandwidth (0.1Hz Total Noise vs Source Voltage Noise vs Frequency to Frequency Indicated) Resistance 10 ww SS oo 100 8 [¥s= 215v 1 Eo Seater enia Np= £15 Ean FAS -F—-4 UNGUGA I pee eg Cte a (CONOR) gS OE EEE | ae g 4 XJ = | CA et EI assesses oan Cot CO in 7 om ci micas ET TT 1 wn 10 1000 Q1 10 10 100 108 1k 10k FREQUENCY (Hz) BANOWIDTH (kHz) SOURCE RESISTANCE (9) Voltage Noise vs Voltage Noise vs Supply = Temperature Voltage Current Noise vs Frequency 5 5 10.0 Fe Tl PL Es . BBE se 3 ‘ Se | a a Pete pL ee NUE 2, _. 2, S CoSecc on PL ee a aici ‘30 -3 0 a 50 75 «(100 125 5 10 2 w “a arr 100 1k 10k TEMPERATURE (°C) TOTAL SUPPLY VOLTAGE (¥* -¥~) (VOLTS) FREQUENCY (Hz) Open Loop Voltage Gain vs Open Loop Voltage Gain vs Voltage Gain vs Frequency Supply Voltage Load Resistance “TTT TT) TTL) eo HPRREER St Se) EA 100 =. = aa eat NV Eg, | oA | ee 740 PECCENG A EZ ee 2 \\ 5 1.0 4 Siz al z° : \\—y ee OY | = E} a NE A er \\2RRRREENG rT) Ss EH a tlitTiTTiTN pg Of 1 1 100 1k 10k 100k 1M 10M 100M a 10 2 w a 50 or 1a 10 10 FREQUENCY {Hz} TOTAL SUPPLY VOLTAGE (VOLTS) LOAD RESISTANCE (0) 2 Ee
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~ TICS HARACTERIS TYPICAL PERFORMANCE C Long Term Drift of m-Up Drift Offset Voltage Drift of Representative Units Mern-UP Representative Units — TT ; ws [| | Td 100 a ‘ +4 =g4 mT WENO gi || = ™ boparrama ao a ee we s 3 | eee hee pte Pepper e te se Astana 8 |) 5 oan a P| oe ) SSS ao === po eet =| CLE i ee phere Pot ~ 3 co ome Zn iS HHH OCTET ET ; = - oon it “oe a AOKTHS) fs 78 TINE AFTER POWER ON (NUTES) at rr res 0 TIRE (#4 ° — Input Offset Current vs “~ Input Bias Current vs Temperature Offset Voltage Change Due Temperature ° emp to Thermat Shock oom il FRO TT | = 0 L | Se Sates RO Cie A WII EPOECD pest PING] EENCD b a Ew Weert Nu = F LH ae TT E20 WO nee TTT | x | po Yee Se IN Lh Z NR SL oe onsle Wee £ CP ceaiemaense | ° ww ia isa rn “B Deadi tg” a emrea a ee ~80 25 * TEMPERATURE (+) ° “me Maximum Output Swing vs int vs Supply Short Circuit Current vs Resistive Load Supply Curre Time 8s TUL Lo — "ests | eS ay ° ee | Tote PRET PRCCCC] cae i Ze FN by AE | ze ee ee c=] r= 3 i os | || * 2 3 4 a LOAD RESISTANCE (kt) ‘0 E bd IME FROM DUTPUY SHORTED TO GROUND MIKLTES) “~ © SOTA surety VOLAGE (votrsy TIME FROM OU vm AT nee
TYPICAL PERFORMANCE CHARACTERISTICS Freaueney eons we . rere | AES Gee] ERS
120 NING Z 3 ye Ze I £ N |
FUMCRNUT) — g++ NSH 2 g 2 N “OIC FESS EFEESHH STEIN = =C EAS OP-27 Maximum OP-27 Small Signal oP-27 Large Sigeal Proqueney Output vs _ Transiant Response Transiei pe a a | a a CHT | TS STAN MNUNIRM . £ neue i 5 ov iH \\ ov te z ., t \\— Ba a ee _ | as ; GLU RUAN Pap STREET Neen LUI ETT TN 2 Oo t89F tk 10k REQUENEY (ta) cL) 10m Bandwidth Product Phase OP-27 Gain, Phase Shift vs Margin vs Temperature . Frequency — : ——= NN 22 of ttt, ‘ N me PY ESEEEEEE! 5 PX Tt = ea A = gu Nf pase wf | ee zt Nm \\ Ue PES CONTI: E eer re err sg . I Fs Pea ENT
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“scm cp 3 5 75 WO 125 1 FREQUENCY (i) 100 a) TEMPERATURE (°C)
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i —_~ TYPICAL PERFORMANCE CHARACTERISTICS 0-37 Maximum S i OP-37 Small Signal Undistorted Output vs Transient Response OP-37 Large Signal Response Frequency Dee " geet BCT TNII ATi mene /\\_ nn 4 ae LA mid N = a m8 2H fe he LUTE TSS “ * eQUENCY Pa w -~ OP-37 Siew Rate, Gain Bandwidth Product, Phase OP-37 Gain, Phase Shift vs Margin vs Temperature Frequency a os 0 —-y ar] — 8Pee Rca: NOs Pert. tT: o| SNM lll ee ee tn) ae | eee see gM GaN SS i 5 EEE ss 5 0 ani his il we g 9} un | |e § SU MIN UT 25 ee eee eZ a ep coo LIMIT TTI | TT -580-2 0 2 50 75 10 (125 a1 10 10 100 TEMPERATURE (°C} FREQUENCY (MHz) OP-37 Slew Rate vs Supply OP-37 Slew Rate vs Load Voltage ® Ta=25°C bia Ta=2see = Ee i (Fe Qi Wa | po | L ii : |Z 7~ i iL 10 100 ry +6 £9 £912 216 «£18 (£21 LOAD RESISTANCE (kf) ‘SUPPLY VOLTAGE (VOLTS) Oe LT Wee 7
APPLICATIONS INFORMATION ~ General (b) For similar reasons, the device must be well shielded The OP-27/'37 series devices may be inserted directly from air currents to eliminate the possibility of ther- into 0P-07, OP-06, 726, and 5534 sockets with or with- ee eres ess a Tanowolts, out removal of external compensation or nulling compo- nents. In addition, the OP-27/37 may be fitted to 741 ()_ Sudden motion in the vicinity of the device can also sockets with the removal or modification of external null- “‘feedthrough’” to increase the observed noise. ing components. A noise-voltage density test is recommended when Noise Testing measuring noise on a large number of units. A 10Hz The 0.1Hz to 10Hz peak-to-peak noise of the OP-27/ OP-37 noise-voltage density measurement will correlate well is measured in the test circuit shown. The frequency i a ane to ne Pea ek white reading tthe response of this noise tester indicates that the 0.1Hz cor- Tesults are determined’ by the wnile noise and the ner is defined by only one zero. The test time to measure location of the 1/f corner frequency. 0.1Hz to 10Hz noise should not exceed 10 seconds, sea ‘ this time limit acts as an ‘additional zero to ‘eliminate noise purer noise is measured and calculated by the following ~ Contributions from the frequency band below 0.1Hz. * Measuring the typical 80nV peak-to-peak noise perform- | [e2no—(130nV)2] ” ance of the OP-27/37 requires special test precautions: m=" Max 100 ww (a) The device should be warmed up for at least five toe minutes. As the op amp warms up, its offset voltage changes typically 4yV due to its chip temperature Ww LP | increasing 10°C to 20°C from the moment the power = 0 supplies are turned on. In the 10 second measure Ww ment interval these temperature-induced effects can = easily exceed tens of nanovolts. 0.1Hz to 10Hz p-p Noise 0.1Hz to 10H Noise Test Circuit Tester Frequency Response 100 ‘t . Smee alll seu 0 HUE TIN 0 | gn nn a £ > x oe TTT TN Ia, > rcommmee w poem Ee fee pe mw * OP-27/0P-37 DEVICE UNDER TEST mae pO . au CM EY a NOTE: ALLL CAPACITOR VALUES ARE FOR FREQUENCY (H2) NON-POLARIZED CAPACITORS ONLY = a O_o
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— eee APPLICATIONS INFORMATION Offset Voltage Adjustment The circuit shown to measure offset voltage is also used : . ee ace as the burn-in configuration for the OP-27/37, with the The input offset voltage of the OP-27/37, and its drift supply voltages increased to +20V, R1=R3=10k, with temperature, are permanently trimmed at wafer pa» — 9999 Ay =100 testing to a low level. However, if further adjustment of , . : " ‘ Test Circuit for Offset Voltage Vos is necessary, the use of a 10k nulling potentiometer and Offset Voltage Drift with will not degrade drift with temperature. Trimming to a Temperature value other than zero creates a drift of (Vog/300) zV/°C, m €.9., if Vos is adjusted to 300,V, the change in drift will an. be 1.V/°C. Standard Adjustment 10k sot : | ‘0 +184 4 -_~ Shi sae on INPUT ‘OUTPUT + “RESISTORS MUST HAVE LOW
3 A = THEAMOELECTRIC POTENTIAL
~ Unity Gain Buffer Applications (OP-27 Only) The adjustment range with a 10k pot is approximately tivity and resolution of the nulling can be improved by —_signal pulse (>1¥), the output waveform will look as using a smaller pot in conjunction with fixed resistors. shown in the pulsed operation diagram. The example has an approximate null range of + 200,V. Improved Sensitivity Adjustment tn ea | om hn < +150 aa 2 fs During the fast feedthrough-like portion of the output, the 7 5 input protection diodes effectively short the output to the 3 ourPur input and a current, limited only by the output short cir- G cuit protection, will be drawn by the signal generator. ' -15v With R= 5002, the output is capable of handling the Offset Voltage and Drift current requirements (1.<20mA at 10V) and the amplifier stays in its active mode and a smooth transition ’ Thermocouple effects, caused by temperature gradients —_will occur. across dissimilar metals at the contacts to the input ter- minals, can exceed the inherent drift of the amplifier As with all operational amplifiers when Ry > 2kQ, a pole unless proper care is exercised. Air currents should be = will be created with Ry and the amplifier's input ~~ minimized, package leads should be short, the two input © capacitance, creating additional phase shift and reducing leads should be close together and maintained at the the phase margin. A small capacitor (20pF to SOpF) in same temperature. parallel with Ry will eliminate this problem. SS LT We i)
Gj &) AY YS) Pty 4] a ] ee at “ wo Pon rp oady a om ys 1 = 1209 roRoF27 . my Of i” wd , Ny) Se 10 ower
Metal Can 8 Lead Hermetic DIP 0355.0370 (508 9395) 0.305 035 MN [ig 0.405 |i rar eso) | 1 TAO cow nen iro ee} om WI] ical aw i 9165-0 185, RAD TYP + Mae Geter t ‘SEATING. + phages 2220-0 310 r ane 5588 787 pone pt ec osobo no " 0.010-0 045 fl 00 fee, 30 jae 0-200 = 0.520 Jt a eer Tare is ec ome Te (05 0885) AB Max or 006 Vy ose 1524) 0027-9018 t ay TYP ee Tas i 2 ‘007-0034 <4 ES-ES) —afe amececi ois t (oste= 086) Si0 93-0480) Coe) —*| “o-~ z a 0.385 10 025 0.014 -0.026 2 i Ds peerarraeel ase-be0— 4h 38 ers 0.038 - 0 068 0100 ooo” t= omen! ll asosor o110-0.160 BAe Obs} NOTE: LEAD OMMETERfS UNCONTROLLED BETWEEN ~ aed "THE REFERENCE PLANE ANO SENTIOG PLANE, NOTE: DIMENSIONS IM INCHES (MILLIMETERS) UNLESS OTHERWISE NOTED Lied “LEADS WITHIN 0.007 OF TAUE POSITION (TP) AT GAUGE PLANE LWOTE: DIMENSIONS IN INCHES (MILLIMETERS) me ss0rc/w OBSOLETE PACKAGE ss0°e | soorcrw
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NOTE; DIMENSIONS IN INCHES UNLESS OTHERWISE NOTED -_~ “LEADS WITHIN 0.007 OF TRUE POSITION (TP) AT GAUGE PLANE Trax oy youre 130°C /W TS Information fureished by Linear Technology Corporation is believed to be accurate and ul reliable, However, no responsibility is assumed for its use. Linear Technology Corpora- tion makes no representation that the interconnection of is circuits as described herein will not infringe on existing patent rights.
a Li Technology Ci ti @AGP 0506 FEV inear technolo Orporation 1 2 1630 McCarthy Bivd., kes CA Base ar LT LINEAR (408) 432-1900 FAX: (408) 434-0507 © TELEX: 499-3977 LINEAR TECHNOLOGY CORPORATION 1991