19-3731; Rev 0; 10/92 General Description The OP27/OP37 precision operational amplifiers provide lower noise and higher speed with the same input offset and drift specifications as the OPO7. Both parts have a 10pV offset, 0.2uV/C drift, and 1.8 million gain. Coupled with a low-voltage noise of 3.5nV/VHz at 10Hz and a low 1/f noise corner frequency of 2.7Hz, the OP27/OP37 are op- timized for accurate amplification of low-level signals. The OP27 features an 8MHz gain-bandwidth product and a 2.8Vi/us slew rate. For applications demanding higher speed, the OP37 has a 63MHz gain-bandwidth product, 17V/us slew rate, and is stable at gains of five or more. An output swing of +10V into 600Q together with low distortion make the OP27/OP37 ideal for professional audio applications. For applications requiring greater precision or lower noise than the OP27 or OP37, see the MAX427/MAX437 and the MAX410/MAX412/MAX414 data sheets. Applications Low-Noise DC Amplifiers Microphone Amplifiers Precision Amplifiers Tape-Head Preamplifiers Thermocouple Amplifiers Low-Level Signal Processing Medical Instrumentation Strain-Gauge Amplifiers High-Accuracy Data Acquisition Typical Application Circuit MA AMAL Low-Noise Precision Operational Amplifiers Features # 10.LV Input Offset Voltage @ 0.2uV/C Drift @ 3nV/VHz Input Noise Voltage (1kHz) @ 80nVp-p Noise (0.1Hz to 10Hz) @ 2.8V/us Slew Rate (OP27) @ 17V/us Slew Rate (OP37) @ 8MHz Gain-Bandwidth Product (OP27) @ 63MHz Gain-Bandwidth Product (OP37) Ordering Information PART TEMP. RANGE PIN-PACKAGE OP27EP 0C to +70C 8 Plastic DIP OP27FP OC to +70C 8 Plastic DIP OP27GP -40C to +85C 8 Plastic DIP OP27GS -40C to +85C 8S0 OP27EZ -40C to +85C 8 CERDIP OP27FZ -40C to +85C 8 CERDIP OP27GZ -40C to +85C 8 CERDIP OP27EJ -40C to +85C 8 TO-99 OP27FJ -40C to +85C 8 TO-99 Ordering Information continued on last page. Pin Configurations LOW-NOISE MICROPHONE PREAMPLIFIER R3 316k SpF 1000 TOP VIEW IMPEDANCE 1 ad MICROPHONE wt BaL [4] Al: Re w- [2] snaxiaa [7] v: ZL 3K 3 OUTPUT = 30k OP27 ns [3] P37 l] our (Z = 5082 TO 2000 , v- [4] [5] Neo. R2 1k RB RA DIP/SO Ri R2 R4 = . . 316k Pin Configurations continued on last page. MAXIAA Maxim integrated Products 1 Cali toll free 1-800-998-8800 for free samples or literature. ZdO/ZdOOP27/OP37 Low-Noise Precision Operational Amplifiers ABSOLUTE MAXIMUM RATINGS Supply Voltage 6... eee +22V Input Voltage (Note 1) 2.0.2... eee +22V Output Short-Circuit Duration ..............00.. Continuous Differential Input Voltage (Note 2) .............. 0.00. +0.7V Differential Input Current (Note 2) .......0...20.00. +25mA Continuous Power Dissipation (Ta = +70C) Plastic DIP (derate 9.09mW/C above +70C) ...... 727mW SO (derate 5.88mMW/C above +70C) ............ 471mW CERDIP (derate 8.00mW/C above +70C) ........ 640mwWw TO-99 (derate 6.67MW/"C above +70C) .......... 533mWw Operating Temperature Ranges: OP27/OP37EP/FP OP27/OP37G_/EZ/EU/FZ/FS OP27/OP37A_/B_/C_ Junction Temperature Range Storage Temperature Range Lead Temperature (soldering, 10 sec) Note 1: For supply voltages less than +22V, the absolute maximum input voltage is equal to the supply voltage. Note 2: OP27/OP37 inputs are protected by back-to-back diodes. Current-limiting resistors are not used in order to achieve low noise. If differential input voltage exceeds +0.7V, the input current should be limited to 25mA. Stresses beyond those listed under Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (Vs = t15V, Ta = +25C, unless otherwise noted.) 0C to +70C veces teenies -40C to +85C See eee eet eee -55C to +125C Lene eee eee -65C to +150C bene nett en es -65C to + 150C veces +300C OP27A/E OP27B/F OP27C/G PARAMETER SYMBOL| CONDITIONS OP37A/E OP37B/F OP37C/G_| UNITS MIN TYP MAX! MIN TYP MAX/| MIN TYP MAX Input Offset Voltage (Note 3) Vos 10 25 20 60 30 6100 pV Long-Term Vos Stability (Notes 4, 5) Vos/TIME 0.2 1.0 03 15 0.4 2.0 | pV/Mo Input Bias Current IB +10 +40 +12 +55 +15 +80] nA Input Offset Current los 7 35 9 50 12 75 nA Input Voltage Range IvR 11.0 +12.3 #11.0412.3 11.0 412.3 Vv Input Resistance - Differential Mode (Note 6) Rin 13 6 0.94 5 O7 4 MQ Input Resistance - Common Mode RINCM 3 2.5 2 GQ Input Noise Voltage (Notes 5,7)} enp-p | 0.1Hz to 10Hz 0.08 0.18 0.08 0.18 0.09 0.25] UVp-p fo = 10Hz 35 65 3.5 55 3.8 8.0 ]- (Nowe aye nage Density en | fo = 30Hz 31 45 31 45 3.3 5.6 |nV/VHz fo = 1kHz 3.0 38 3.0 38 3.2 45 fo = 10Hz 1.7 4.0 1.7 40 1.7 Input Noise-Current Density : _ (Notes 5, 8) : in fo = 30Hz 10 23 10 23 1.0 pA/VHz| fo = 1kHz 0.4 06 04 06 0.4 06 RL 2 2kQ, Vo = +10V | 1000 1800 1000 1800 700 1500 Large-Signal Voltage Gain Avo RL 2 1kQ, Vo =+10V]} 800 1500 800 1500 400 1500 Vim ' Ri 2 6000, Vo = +1V, Vg = +4V (Note 5) 250 700 250 700 200 500 Output Volt Swi v RL 2 2kQ #12.0 +13.8 12.0 +13.8 11.86 13.5 V olta in mpurwonage owing {RLS 6000 HOOLTS |10.0411.5 10.0 411.5 2 MAXLANLow-Noise Precision Operational Amplifiers ELECTRICAL CHARACTERISTICS (continued) (Vg = 15V, Ta = +25C, unless otherwise noted.) OP27A/E OP27B/F OP27C/G PARAMETER SYMBOL CONDITIONS OP37A/E OP37B/F OP37C/G | UNITS MIN TYP MAX! MIN TYP MAX| MIN TYP MAX Open-Loop Output _ _ Rosinance Ro | Vo=0,lo=0 70 70 70 2 Gommon-Mode Rejection | CMR | Vom =411V 114 126 106 123 100 120 dB Rower-Supply Rejection | pgrR | Vs = 44V to +18V 1 10 1 10 2 20! pw fo = 100kHz, OP27 5.0 8.0 5.0 8.0 5.0 8.0 ween Product | gpp | fo = 10kHz, AVCL=5,OP37 | 45 63 45. 63 45 63 MHz fo = 1MHz, AVCL 2 5, OP37 40 40 40 RL 2 2kQ, OP27 17 28 17 28 17 28 Slew Rate (Note 5) SR Vins RL2 2kQ, AvcL25,0P37 | 11 17 117 1117 Power Dissipation PD Vo =0 90 6140 90 140 100 170) mW Offset Adjustment Range Rp = 10kQ. +4.0 +40 +4.0 mV ELECTRICAL CHARACTERISTICS (Vs = +15V, Ta = TMIN to Tmax, unless otherwise noted.) OP27A OP27B OP27C PARAMETER SYMBOL, CONDITIONS OP37A OP37B OP37C UNITS MIN TYP MAX| MIN TYP MAX| MIN TYP MAX Input Offset Voltage (Note 3) Vos 30. =s60 50 200 70 300| uv Average-Offset Voltage Drift (Note 9) | TCVos 02 06 03 #13 0.4 1.8 | pVv/C Input Bias Current IB +20 +60 +28 +95 +35 +150} nA Input Offset Current | los 10 50 14 85 20 135] nA Input Voltage Range IvR +10.3 11.5 +10.3 411.5 $10.2 411.5 Vv Large-Signal Voltage Gain AVO | RL2 2kQ, Vo = +10V, 600 1200 500 1000 300 800 VimV Maximum Output-Voltage Swing Vo Ri 2 2kQ. #11.5 13.5 +11.0 13.2 10.5 13.0 v Common-Mode Rejection Ratio CMRR | Vom = t10V 108 122 100 119 94 116 dB Power-Supply Rejection Ratio PSRR | Vs = +4.5V to +18V 2 16 2 20 4 51 | pV MAXUM 3 ZdO/ZdoOOP27/OP37 Low-Noise Precision Operational Amplifiers ELECTRICAL CHARACTERISTICS (continued) (Vs = +15V, Ta = TMIN to TMAX, unless otherwise noted.) OP27E OP27F OP27G PARAMETER SYMBOL. CONDITIONS OP37E OP37F OP37G [units MIN TYP MAX! MIN TYP MAX; MIN TYP MAX Input Offset Voltage (Note 3) Vos 20 50 40 140 55 220| uv Average Offset-Voltage Drift (Note 9) | TCVos 0.2 06 03 13 04 1.8 [uv/c Input Bias Current IB +14 +60 +18 +95 +25 +150! nA Input Offset Current los 10 50 14. 85 20 1351 nA Input Voltage Range IvR 10.5 411.8 +10.5 411.8 +10.5+11.8 Vv Large-Signal Voltage Gain Avo | RL2 2kQ, Vo =+10V) 750 1500 700 1300 450 1000 VimvV Output Voltage Swing Vo RL 2 2kQ +11.7 413.6 11.4 413.5 #11.0413.3 Vv Common-Mode Rejection Ratio CMRR | Vom = 10V 110 124 102 121 96 118 dB | Power-Supply Rejection Ratio PSRR_ | Vs = +4.5V to +18V 2 15 2 16 2 32 | pVN Note 3: Vos is measured approximately 0.5 seconds after application of power. Note 4: Long-term input offset voltage stability refers to the average trend line of Vos vs. Time over extended periods after the first 30 days of operation. Note 5: Guaranteed by design. Note 6: Guaranteed by input bias current. Note 7: See test circuit and frequency response curve for 0.1Hz to 10Hz tester (Figures 1, 6). Note 8: See test circuit for current-noise measurement (Figure 2). Note 9: The TCVos performance is within the specifications unnulled or when nulled with Rp = 8kQ to 20kQ. TCVos is sample tested to 0.1% AQL for A/E grades. B/C/F/G are guaranteed by design. Typical Operating Characteristics (TA = +25C, unless otherwise noted) INPUT WIDEBAND VOLTAGE VOLTAGE-NOISE DENSITY NOISE vs. BANDWIDTH (0.1Hz TOTAL NOISE vs. SOURCE vs. FREQUENCY TO FREQUENCY INDICATED) RESISTANCE 10 10 100 3 Vs = Vg=415V i = yy > _ = 5 = 1 ( > a xs 5 2 = 3 8 3 10 z 3 = 2 a 3 a T S = AT 1 0.01 1 1 10 100 1000 100 1k 10k 100k 100 1k 10k FREQUENCY (Hz) BANDWIDTH (He} SOURCE RESISTANCE (22) 4 MAAXLAALow-Noise Precision Operational Amplifiers Typical Operating Characteristics (continued) VOLTAGE-NOISE DENSITY VOLTAGE-NOISE DENSITY CURRENT-NOISE DENSITY vs. TEMPERATURE vs. SUPPLY VOLTAGE vs. FREQUENCY 5 5 qT Vg =415V [24 AT 1082 i ig 4 AT 10Hz = a >a a 3 ,| = AT Aide 3 2 3 = AT (kHz 2 z oOo oO = = g 3 5 82 3 4/f CORNER 140Hz 1 1 1 0 2 0 2 50 75 100 125 0 10 20 30 40 10 100 1k 40k TEMPERATURE (C) TOTAL SUPPLY VOLTAGE (V+ - V-) {V) FREQUENCY (Hz) SUPPLY CURRENT vs. WARMUP OFFSET- INPUT BIAS CURRENT SUPPLY VOLTAGE VOLTAGE DRIFT vs. TEMPERATURE = [veeuwv TT 3 Vg =415V | 2 _ 40 ze 40 Ta= 425C 5 /0P3? C/G = W & 8 Z \ = to x 30 oP27/ 39 | ta- 125C Z OP27/0P37 B/F = ANG opare > CA 5 m+ 2 alt oP27/ = ZA z = NSS Tora B29 = z PACS Ta=-55C 3 10 = 0P27/ 5 OP37A 10 0 bed 5 15 25 35 45 0 1 2 3. 4 5 50 -25 0 25 50 75 100 125 150 TOTAL SUPPLY VOLTAGE (V) TIME AFTER POWER ON (MIN) TEMPERATURE (C) INPUT OFFSET CURRENT VOLTAGE GAIN vs. vs. TEMPERATURE FREQUENCY 50 180 Vs =H15V 160 ikG 2 4 140 = @ 120 = 30 (or2reis7c z 10 3 S ta 3 e 20 = 60 S 40 5 N 027B/37B > 2 10 SS 20 OP27A/37A 8 . -20 {EO DS OS B05 100 125 + 10 100 1k 10k 100k 1M 10M 100M TEMPERATURE (C) FREQUENCY (Hz) MAXIM 5 ZdO/ZdOOP27/OP37 Low-Noise Precision Operational Amplifiers Typical Operating Characteristics (continued) OP27 OP37 GAIN, PHASE SHIFT vs. GAIN, PHASE SHIFT vs. Oe OUP EL yO. GE GAIN 95 FREQUENCY 80 50 FREQUENCY x ee AG Vg=+ Vs=215V.1I 199 RL = 2kQ 40 110 20 A a gS YY g we 3 1 2 gi wo 21s 7 Ri = 6002 ES we 4 B Sa 0% $10 2 2 2 A/ = oe 8 10 470 a5 4 180 1 7 100 0 20 3 40 FREQUENCY (MHz) FREQUENCY (MHz) TOTAL SUPPLY VOLTAGE {V) OP27 MAXIMUM OUTPUT SWING MAXIMUM OUTPUT VOLTAGE SMALL-SIGNAL TRANSIENT 98 vs. FREQUENCY vs.LOAD RESISTANCE RESPONSE od Vg=415V S POSITIVE 50mV 8 2 = = 5 5 3s 2 16 a > 3 Ew B 12 2 3 : = = ~] Cg = Ss. x = ~ 2, Vg=415V -5omv 1k 100k 1M 10M TIME (500ns/div) FREQUENCY (Hz) LOAD RESISTANCE (Q) Avo <4, C1 = 15pF Vs =415V OP27 OP37 OP37 LARGE-SIGNAL TRANSIENT SMALL-SIGNAL TRANSIENT LARGE-SIGNAL TRANSIENT RESPONSE RESPONSE RESPONSE s 3 = 5V 10V VOLTAGE (2V/div) Qo VOLTAGE (20mV/div) Qo VOLTAGE (5V/div) = So = i -50mV i Aver-+1 ME @usidiv) TIME (200ns/div) TIME (ips/div) Vs = +15V Vs +15V Ay = 45V Ay=+5VN 6 MAXIAALOW-FREQUENCY NOISE VOLTAGE NOISE (nV) TIME (1sec/div) 0.1Hz TO 10Hz PEAK-TO-PEAK NOISE NOTE: (OSERVATION TIME LIMITED TO 1@ SECONDS. } Low-Noise Precision Operational Amplifiers Typical Operating Characteristics (continued) OPEN-LOOP VOLTAGE GAIN vs. LOAD RESISTANCE Vs =+15V OPEN-LOOP VOLTAGE GAIN (V/V) LOAD RESISTANCE (02) NOTE: ALL CAPACITOR VALUES ARE FOR NON-POLARIZED CAPACITORS ONLY. MAAXIM OP27/0P37 Eno Figure 1. Voltage-Noise Test Circuit (0.1Hz to 10Hz) Applications Information The OP27/OP37 provide stable operation with load capacitances of up to 2nF and +10V output swings; larger capacitances should be decoupled with a 50Q series resistor inside the feedback loop. The OP27 is unity-gain stable and the OP3?7 is stable at gains of five or greater. MAXIAN Figure 2. Current-Noise Test Circuit Thermoelectric voltages generated by dissimilar metals at the input terminals degrade the drift performance. Connections to both inputs should be maintained at the same temperature for best operation. ZLdO/LedOOP27/OP37 Low-Noise Precision Operational Amplifiers OUTPUT ARAAXUAA 4 0P27/0P37 \- Figure 3. Offset Nulling Circuit 47k 1k POT 47k V+ Figure 4. Alternate Offset-Voltage Adjustment Offset-Voltage Adjustment Input offset voltage (Vos) is trimmed at the wafer level. If Vos adjustment is necessary, a 10kQ trim potentiometer (pot) may be used and will not degrade TCVos (Figure 3). Other trim pot values from 1kQ to 1MQ can be used with a slight degradation (O.1pV/C to 0.2uV/"C) of TCVos. Adjusting, but not zeroing, Vos creates a drift of approximately (Vos/300)uV/C. For example, the change in TCVos is 0.33uV/C if Vos is adjusted to 100pV. The adjustment range with a 10kQ trim pot is +4mvV. For a smaller range, reduce nulling sensitivity by connecting a smaller pot in series with fixed resistors; for example, Figure 4 has a +280uV adjustment range. To measure the 80nVp-p noise specification of the OP27/OP37 in the 0.1Hz to 10Hz range, observe the following precautions: 1. The device must warm up for at least five minutes. Figure 5 shows how Vos typically increases 4yV with increases in chip temperature after power-up. In the 10sec measurement interval, temperature-induced ef- fects can exceed 10nV. 2. For similar reasons, the device must be well-shielded _ fromair currents, including those caused by motion. This minimizes thermocouple effects. 3. As shown in Figure 6, the 0.1Hz corner is defined by only one zero. A maximum test time of 10sec acts as an additional zero to eliminate noise contributions from the frequency band below 0.1Hz. 4. A noise-voltage-density test is recommended when measuring noise on a large number of units. A 10Hz noise-voltage-density measurement correlates well with a0.1Hz to 10Hz peak-to-peak noise reading, since both results are determined by the white noise and the location of the 1/f corner frequency. wa 10 ES=* = OP27/0P37 C/G if os i = a OP27/0P37 B/F Se 25 aaa ge 5 ZA;y < OP27/0P37 AE = a 0 1 2 3 4 5 TIME AFTER POWER-ON (MINUTES) Figure 5. Warm-Up Offset Voltage Drift 100 90 ys Pet A / \ ry ih \ \ = 10 3S 2 S 60 50 TEST TIME OF 10 SEC FURTHER 40 LIMITS LOW FREQUENCY (< 0.1H2) GAIN Ps eT eT 0.01 at 10 10 100 FREQUENCY (Hz) Figure 6. 0.1Hz to 10Hz Vp.p Noise Tester Frequency Response MAXLMMUnity-Gain Buffer Applications (OP27 Only) Figure 7 shows the circuit and output waveform with R1 < {00Q, and the input driven with a fast, large signal pulse (>1V). During the fast rise portion of the output, the input protec- tion diodes short the output to the input, and a current, limited only by the output short-circuit protection, is drawn by the signal generator. With Rt >500Q, the output is capable of handling the current required (IL < 20mA at {0V) and a smooth transition occurs. When Rt 2 2kQ, a pole created with Rf and the amplifiers input capacitance (8pF) causes additional phase shift and reduces phase margin. A small capacitor (20pF to 50pF) in parallel with Rr eliminates this problem, Comments on Noise The OP27/OP37 are very low-noise amplifiers. They have outstanding input voltage noise characteristics by operating the input stage at a high quiescent current. Input bias and offset currents, which would normally increase with the quiescent current, are minimized by bias-current cancellation circuitry. The OP27/OP37A and E grade devices have |p and los of only t40nA and 35nA respectively at +25C. This is particularly important with high source-resistances. Voltage noise is inversely proportional to the square-root of bias current, but current noise is proportional to the square-root of bias current. The OP27/OP37 low-noise advantages are reduced when high source resistors are used. Total noise = [(voltage noise)2 + (current noise x Rs)? + (resistor noise)2]1 Figure 8 shows noise vs. source resistance at 1kHz. To use this plot for wideband noise, multiply the vertical scale by the square-root of the bandwidth. The OP27/OP37 maintains low input noise voltage with Rs < 1kQ. With Rs > 1kQ, total noise increases and is dominated by the resistor noise, not the current or the voltage noise. It is only with Rs 2 20kQ that current noise dominates. Current noise is not important for applica- tions with Rs < 20kQ, The OP27/OP37 has lower total noise than the MAX400/OP07 for Rs < 10kQ. As Rs increases, the crossover between the OP27/OP37 and the MAX400/OP07 noise occurs in the Rs = 15kQ to 40kQ region. ' Figure 9 shows 0.1Hz to 10Hz peak-to-peak noise. Here, resistor noise is negligible and current noise (in) becomes important, because in 1/\f. The crossover with the MAX400/OP07 occurs in the RS = 3kQ to 5kQ range, MAXIM Low-Noise Precision Operational Amplifiers Ry ZL 2.8V/us (AAMDAAA OP27/0P37 Figure 7. Pulsed Operation of Unity-Gain Buffer 100 50 MAX400/0P07 o wn TOTAL NOISE (nV/VH2) NOISE ONLY 50 100 500. 1k 5k 10k 50k Rs - SOURCE RESISTANCE (Q) Figure 8. Noise vs. Source Resistance (Including Resistor Noise) at 1kKHz depending on whether balanced or unbalanced source resistors are used (at 3kQ the IB and los error can be three times the Vos specification). For low-frequency applications, the MAX400/OP07 is better than the OP27/OP37 when Rs > 3kQ, except when gain error is important. Figure 10 illustrates the 10Hz noise. As ex- pected, the results fall between those of the previous two figures. For reference, typical source resistances of some signal sources are listed in Table 1. ZdO/ZedOOP27/OP37 Low-Noise Precision Operational Amplifiers Table 1. Signal Source vs. Source Impedance DEVICE SOURCE IMPEDANCE COMMENTS Strain Typically used in low- Gauge <5002 frequency applications. Low Ip is very important to ; reduce self-magnetization Magnetic < 15002 problems when direct Pp coupling is used. OP27 |p can be neglected. yea e Used in rugged servo-feed- Differential < 15000 back applications. Bandwidth Transformer of interest is 400Hz to SkHz. Table 2. Open-Loop Gain vs. Frequency OPEN-LOOP GAIN 1 Rs og Rg = Rsi = 10k22, $2 = 2 Rg MATCHED Rs = 10k, = Rg2 = 5kQ. Rs1 PEAK-TO-PEAK NOISE (nV) A=+25C Vg =+15V Rs2 RESISTOR NOISE ONLY 100 500 1k 10k 50k Rs - SOURCE RESISTANCE (Q) Figure 9. Peak-to-Peak Noise (0.1 to 10Hz) vs. Source Resistance (Includes Resistor Noise) FREQUENCY AT: OP07 OP27 OP37 3Hz 100dB 1240B 125dB 10Hz 100dB 120dB 125dB 30Hz 90dB 11008 124dB 10 100 50 OP08/0P108 = = = B10 So = = 1 Rg UNMATCHED 5 Rs = Rs1 = 10k, =0 Rs MATCHED Rg = 10k22, = Rg2=5kQ => 50 = 100 500 10k 50k RS - SOURCE RESISTANCE (Q) RESISTOR NOISE ONLY Figure 10. 10Hz Noise vs. Source Resistance (Includes Resistor Noise) MAXIM_ Ordering Information (continued) PART TEMP. RANGE PIN-PACKAGE OP27GJ -40C to +85C 8 T0-99 OP27AZ 58C to +125C 8 CERDIP* OP27BZ -55C to +125C 8 CERDIP* OP27CZ -55C to +125C 8 CERDIP* OP27AJ 55C to +125C 8 TO-99" OP27Bu 55C to +125C 8 T0-99" OP27CJ 55C to +125C 8 TO-99" OP37EP OC to +70C 8 Plastic DIP OP37EP 0C to +70C 8 Plastic DIP OP37GP -40C to +85C 8 Plastic DIP OP37GS -40C to +85C 880 OP37EZ -40C to +85C 8 CERDIP OP37FZ -40C to +85C 8 CERDIP OP37GZ -40C to +85C 8CERDIP | OP37EJ -40C to +85C 8 TO-99 | OP37Fu -40C to +85C 8 10-99 i OP37GJ -40C to +85C 8 10-99 OP37AZ 55C to +125C 8 CERDIP* OP37BZ -55C to +125C 8 CERDIP* OP37CZ 55C to +125C 8 CERDIP* OP37AJ -55C to +125C 8 TO-99* OP37BJ -55C to +125C 8 TO-99" OP37CJ 55C to +125C 8 10-99" *Contact factory for availability and processing to MIL-STD-883. Pin Configurations (continued) V- (CASE) TO-99 MAXUM Low-Noise Precision Operational Amplifiers Chip Topography 0.095" (2.41 mm) Vout 0.079" (2.01 mm) <<____ | OP27/OP37 SUBSTRATE CONNECTED TO V- 11 ZLdO0/ZedOtee Low-Noise Precision Operational Amplifiers Package Information LEAD AY 030 - 0.110 eee 762 - 2.794 FAD. oes ais ous. n01s | Le 0130 + 0.005 0.40 0.300 - 0.320 0.020 (3302 = ase ten] Troy (at Bm pe 0 - 10 0.009 - 0.015 Fe a IN. 0.229 - 0.381 con 20 iy, el. 7 17 0.018 + 0.003 0.100 + 0.010 on 10.57 + 0.076) 25a + 0.254) ass fat [css 8 Lead Plastic DIP Oy = 120C/W Oyo = 70C/W ris" LEAD #1 ao 2.025 pan Le (0.635) 0.291 i739 MAX 0, oe aa 700-0 128) 0.020 - 0.070 eran * ete MAX (as0e = 1.776} re ma 4 8 ae 7 + fe VF co -an12 (0203-0306) aM ee nob: +0002 i467 = 0051) 41100 = 0.010 01386 = 0025 (2540 = 0.254) i979 = 01635) 8 Lead CERDIP Oj, = 125C/W Ojo = 55C/W 150-0158 0181-0205 228 - 0744 (3B1O- 4.013) (4897-5207) (5.791 - 6198) LEAO #1 Q0l4 - 0018 jose 0457 | >| 0050 gs T1275) {0.457 - aaa be 3 et a mee * 007 0.009 Ciera ota) ' (0178 - 0.229) 8 Lead Small Outline 04, = 170C/W Qjc = 80C/W sata 0.315 - 0.335 OIA. 165-0195 (00 - 8508) oe LEAD #1 A191 - 4699) i088) i - t 1-1 are ase | at acta MIN, TC ng MAX ne lb inst 8 Lead T0-99 Oya = 150C/W Ojc = 45C/W Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 1992 Maxim Integrated Products Printed USA MAAXILAA is a registered trademark of Maxim Integrated Products.