National Semiconductor Corporation LM101A/LM201A/LM301A Operational Amplifiers output, no latch-up when the common mode range is ex- General Description The LM101A series are general purpose operational amplifi- ers which feature improved performance over industry stan- dards like the LM709. Advanced processing techniques make possible an order of magnitude reduction in input cur- rents, and a redesign of the biasing circuitry reduces the temperature drift of input current. Improved specifications include: Offset voltage 3 mV maximum over temperature (LM101A/LM201A) Input current 100 nA maximum over temperature (LM101A/LM201A) Offset current 20 nA maximum over temperature (LM101A/LM201A) Guaranteed drift characteristics Offsets guaranteed over entire common mode and sup- ply voltage ranges Slew rate of 10V/ps as a summing amplifier This amplifier offers many features which make its applica- tion nearly foolproof: overload protection on the input and ceeded, and freedom from oscillations and compensation with a single 30 pF capacitor. It has advantages over inter- nally compensated amplifiers in that the frequency compen- sation can be tailored to the particular application. For ex- ample, in low frequency circuits it can be overcompensated for increased stability margin. Or the compensation can be optimized to give more than a factor of ten improvement in high frequency performance for most applications. In addition, the device provides better accuracy and lower noise in high impedance circuitry. The low input currents also make it particularly well suited for long interval integra- tors or timers, sample and hold circuits and low frequency waveform generators. Further, replacing circuits where matched transistor pairs buffer the inputs of conventional IC op amps, it can give lower offset voltage and a drift at a lower cost. The LM101A is guaranteed over a temperature range of 55C to +125C, the LM201A from 25C to +85C, and the LM301A from 0C to + 70C. Schematic** and Connection Diagrams (Top view) BAL/ COMP1 vs COMPZ 1 07 98 TLAH 7752-1 Dual-in-Line Package / BALANCE/ __1 8 COMPENSATION [ COMPENSATION INPUT - yt 3 6 INPUT + ourPut vs > BALANCE TLAH/ 7752-4 Order Number LM101AJ, LM201AJ, LM301AJ, LM201AN or LM301AN See NS Package Number JO8A or NO8A **Pin connections shown are for 8-pin packages. BALANCE INPUTS Metal Can Package COMPENSATION LM201AH or LM301AH TLAH/ 7752-2 Order Number LM101AH, See NS Package Number H08C BALANCE, COMPENSATION INPUT INPUT a Dual-In-Line Package WU benno |) ee 1 1 a - * 1 pamemte 4 3 COMPENSATION 1 v 0 OUTPUT BALANCE = TLAH/7752-3 Note: Pin 6 connected to bottom of package. Order Number LMi01AJ-14A, LM201AJ-14 or LM301AJ-14 See NS Package Number J14A 2-285 VELOCWT/VLOZINT/VLOLINTLM101A/LM201A/LM301A Absolute Maximum Ratings If Military/Aerospace specified devices are required, contact the National Semiconductor Sales Office/Distributors for availability and specifications. Supply Voltage Differential Input Voltage Input Voltage (Note 1) Output Short Circuit Duration (Note 2) Operating Junction Temp. Range T. J Max H-Package N-Package J-Package M-Package Power Dissipation at Ta = 25C H-Package (Still Air) (400 LF/Min Air Flow) N-Package J-Package M-Package Thermal Resistance (Typical) 64 H-Package (Still Air) (400 LF/Min Air Ftow) N Package J-Package M-Package (Typical) 8jc H-Package (Still Air) (400 LF/Min Air Flow) Storage Temperature Range Lead Temperature (Soldering, 10 sec.) LM101A/LM201A +22av +30V 15V Indefinite 55C to + 125C (LM101A) 25C to + 85C (LM201A) 150C 150C 150C 500 mw 1200 mw 900 mW 1000 mw 230C/W 95C/W 135C/W 110C/W 25C/W 10C/W 65C to + 150C LM301A +18V +30V +15V Indefinite 100C 100C 100C 300 mW 700 mw 500 mw 650 mW 230C/W 95C/W 135C/W 110Cmw 25C/W 10C/W 68C to + 150C Metal Can or Ceramic 300C 300C Plastic 260C 260C ESD rating to be determined. Electrical Characteristics (note 3) T, = 1) Parameter Conditions LM101A/LM201A LM301A Units Min Typ Max | Min Typ Max Input Offset Voltage Ta = 28C, Ag < 50k 7 2.0 2.0 7.5) mv Input Offset Current Ta = 25C 1.5 10 3.0 50 nA Input Bias Current Ta = 25C 30 75 70 250] nA Input Resistance Ta = 25C 1.5 4.0 0.5 2.0 Ma Supply Current Ta = 26C Vs = +20V 1.8 3.0 mA Vs = +15V 1.8 3.0 | mA Large Signal Voltage Gain Ta = 25C, Vg = 15V 50 160 25 160 VimvV Vout = 10V. RL = 2ko m Input Offset Voltage Rg < 50k9 3.0 10 | mv os 2 Average Temperature Coefficient | Rg < 50 ka 3.0 15 60 30 | wv/c of Input Offset Voltage Input Offset Current 20 70 nA Average Temperature Coefficient | 25C < Ta < Tmax 0.01 0.1 0.01 0.3 | nAvG of Input Offset Current TmMIN S Ta S 25C 0.02 02 0.02 06 |nArc 2-286Electrical Characteristics (note 3) T, = T, (Continued) Parameter Conditions LMTO1A/LM201A LM301A Units Min Typ Max| Min Typ Max Input Bias Current 0.1 0.3] pA Supply Current Ta = Tuax. Vs = +20V 1.2 25 mA Large Signal Voltage Gain Vs = +15V, Vout = +10V 25 15 Vimv Ri 2 2k Output Voltage Swing Vg = +15V Ry = 10k] +12] +14 +121 +14 Vv RL = 2k | +10 +13 +10 13 Vv Input Voitage Range Vg = +20V 15 Vv Vg = +15V 15, -13 +12] +15, -13 Vv Common-Mode Rejection Ratio} Rg < 50 ko 80 96 70 90 dB Supply Voltage Rejection Ratio | Rs < 50k 80 96 70 96 dB Note 1: For supply voltages less than + 15V, the absolute maximum input voltage is equal ta the supply voltage. Note 2: Continuous short circuit is allowed for case temperatures to 125C and ambient temperatures to 75C for LM101A/LM201A, and 70C and 55C respectively for LM301A. Note 3: Unless otherwise specified, these specifications apply for C1 = 30 pF, t5V < Vg < +20V and 55C < Ta < + 125C (LMI01A), +5V = Vs s +20V and -25C s Ta < +85C (LM201A), +5V < Vg < 15V and OC < Ta < +70C (LM301A). Note 4: Refer to RETS101AX for LM101A military specifications. Guaranteed Performance Characteristics imio1a/LmM201a Input Voltage Range INPUT VOLTAGE RANGE (:) ST a S128C 5 10 15 20 SUPPLY VOLTAGE (=v) OUTPUT SWING (*V) Output Swing 2 at * ait $8C ST, < 128C 5 10 16 SUPPLY VOLTAGE (*) Guaranteed Performance Characteristics iuso1a Input Voltage Range INPUT VOLTAGE RANGE (+) 5 10 5 SUPPLY VOLTAGE (+V) OUTPUT SWING (*} Output Swing aah OS yn * 20 . Ot<TaA< ane" it) SUPPLY VOLTAGE {:} Voltage Gain 100 u z = ty $ 82 5 So S Hy 70 20 5 1@ 16 20 SUPPLY VOLTAGE (+) TLAH/ 7752-5 Voltage Gain 100 | a = z = 86 o = 8 a S > 16 70 15 $ 10 15 SUPPLY VOLTAGE [=} TL/H/7752-6 2-287 VLOEWT/VLOCINT/VLOLATLM101A/LM201A/LM301A Typical Performance Characteristics Supply Current 25 = 20 < - = 15 = 3 > 10 - 45 s 10 15 2 SUPPLY VOLTAGE (2} Input Current, LM101A/LM201A/LM301A oo nN LM301A 60 z w = 0 BIAS, LA101A/LM201 A = = 2 3 ow BA za a A/LM201A 1 a 50 t Ss 100 150 200 TEMPERATURE (C) " Input Noise Current 10 MEAN SQUARE NOISE CURRENT (A7/Hz) 10 108 w 10k 19 FREQUENCY (Hr) VOLTAGE GAIN (4B) 3 OUTPUT IMPEDANCE ({2 Voltage Gain 5 10 19 a SUPPLY VOLTAGE (!) Current Limiting Vg = 216V Ta = 128C PT, = 25C OUTPUT SWING (:v) 6 5 68 2 6 3 OUTPUT CURRENT (smA) Common Mode Rejection 20 = Rg 1KQ = = 10 Tat z s 5 s # ; = Von = 20V w 1 Ss s = z eo a i Vou St1V u Ss 10 100 Tk 10% 100% 1M FREQUENCY (Hz} Closed Loop Output . Impedance | SINGLE POLE COMPENSATION Ct = 309F TT, = 25C lous = Sma 10 100 te 1h = 100k 1M FREQUENCY (Hz) POWER DISSIPATION (mW) EQUIVALENT INPUT NOISE VOLTAGE (nV /AVHz ) SUPPLY REJECTION (dB) Maximum Power Dissipation $00 25 45 65 5 108 = 125 AMBIENT TEMPERATURE (C Input Noise Voltage a UE PIC TT Jini FREQUENCY (Hz) Power Supply Rejection 101000 10k 10M 1 FREQUENCY (Hz) TLAH/7752-7 2-288Typical Performance Characteristics for Various Compensation Circuits** Single Pole Compensation Two Pole Compensation Rz Az al Vin Vin Vour Your aa Vin Vie 3 cz 1 TL/H/7752-8 iC cre AGs_ Cre fa =e . 0 Ri + R2 11K = F Cs = 30 pF s = 90 Pi C2 = 10C1 = TLIH/7752-12 Open Loop Frequency Open Loop Frequency Response Response 1 128 Ta = 25C 10 Vs = t15V 1 226 10 ms { sw 57+ sf PHASE us = Sn wz z ae B z z = 35 5 s oo in wu 5 2 2 i aa ne 5 oa 8 S mbt, =2 i SINGLE POLE Vg = 215V a O}-Cl = 30F o C2 = 308 14 7 1 10 100 1k 1% 100k tM 10M 1 18 100 1k tl 1006 tA lem FREQUENCY (Hal FREQUENCY (Hz) TL?H/7752~-9 TLAH/7752-13 Large Signal Frequency Large Signal Frequency Response Response 16 16 Vs = t18V Ta 28C se Ss 12 Ci = 30pF z = C2 = 30g E E B a 5 E = S Cy = Mer 2, e * 1K) OK OM tO 108 198k FREQUENCY (Ht) FREQUENCY (He) TL/H/7752-10 Voltage Follower Pulse TL/H/7752-14 Voltage Follower Pulse Response Response 10 a =~ 6 = = oe S 4 OUTPUT Zz a 5 z Eo TWO POLE 2 & 5 = 7 $ ga Ta = 25C > Va = ttSV ve . BY 4 C1 = 30 pF POLE 5 4 C2 = 200 pF ~10 0 18 20 30 40 50 @8 70 80 TIME (Gal TLAHI/7752-11 0 10 28 30 48 50 80 70 BO TIME (us) TL/H/7752-15 **Pin connections shown are for 8-pin packages. VOLTAGE GAIN (a8) Feedforward Compensation cz C2 = Fie 3 fp = 3 MHz ct = (180 9F TL/H/7752-16 Open Loop Frequency Response 20 Ta 5 2C Vs = #15 2% 138 Zz Ime R . ma GAIN j FEEDFORWARD fe 190 tk 10k te0k 1 10m 100M FREQUENCY (Hz) TL/H/7752-17 Large Signal Frequency Response 6 Vs = 218V Ty = 28C FEEDFORWARD OUTPUT SWING (1} o - 100% 17m FREQUENCY {Hz) TL/H/7752-18 Inverter Pulse Response OUTPUT Ta 25C Vs = t15 VOLTAGE SWING () 612345678 THE (ys) TL/H/7752-19 2-289 VLOEW1/VLOZNT/VELOLINTLM101A/LM201A/LM301A Typical Applications** Variable Capacitance Multiplier RI 1K Rp C=1+=-Cl ao R2 10K Simulated Inductor Fast Inverting Amplifier with High Input impedance a SpF OuTeuT TL/H/7752~22 Sine Wave Osciliator SIWE OUTPUT % on **Pin connections shown are for 8-pin packages. fo = 10 kHz L _ C2 cl 300 pF 0.1 uF L = R1R2C1 C3. $R4 TLAH/7752~20 As = Re 30pF S 10K Ap = Rt = = TL/H7752~21 Inverting Amplifier with Balancing Circuit Ri R2 INPUT O ouTPUT Aa 100. tMay be zero or equal to parallel combina- tion of R1 and R2 for minimum offset. ry 30pF TL/H/77&2-23 Integrator with Bias Current Compensation Vin TLAH/776225 *Adjust for zero integrator drift. Current drift typically 0.1 NA/*C over 55C to + 125C temperature range. TL/H/7752-24 2-290Application Hints** Protecting Against Gross Fault Conditions TEST POINT *Protects input *Protects output <Protects outputnot needed when A4 is used. TLAH/7752-26 Compensating for Stray Input Capacitances or Large Feedback Resistor C2 INPUT OUTPUT R1iCs C2 = RD Aa ts TL/H/7752-27 Isolating Large Capacitive Loads INPUT Although the LM101A is designed for trouble free operation, experience has indicated that it is wise to observe certain precautions given below to protect the devices from abnor- mal operating conditions. It might be pointed out that the advice given here is applicable to practically any IC op amp, although the exact reason why may differ with different de- vices. When driving either input from a low-impedance source, a limiting resistor should be placed in series with the input lead to limit the peak instantaneous output current of the source to something less than 100 mA. This is especially important when the inputs go outside a piece of equipment where they could accidentally be connected to high voltage sources. Large capacitors on the input (greater than 0.1 uF) should be treated as a low source impedance and isolated with a resistor. Low impedance sources do not cause a problem unless their output voltage exceeds the supply volt- age. However, the supplies go to zero when they are turned off, so the isolation is usually needed. The output circuitry is protected against damage from shorts to ground. However, when the amplifier output is connected to a test point, it should be isolated by a limiting resistor, as test points frequently get shorted to bad places. Further, when the amplifer drives a load external to the equipment, it is also advisable to use some sort of limiting resistance to preclude mishaps. **Pin connections shown are for 8-pin packages. TLAH/77652-28 Precautions should be taken to insure that the power sup- plies for the integrated circuit never become reversed even under transient conditions. With reverse voltages greater than 1V, the iC will conduct excessive current, fus- ing internal aluminum interconnects. If there is a possibility of this happening, clamp diodes with a high peak current rating should be installed on the supply lines. Reversal of the voltage between V+ and V~- will always cause a prob- lem, although reversals with respect to ground may also give difficulties in many circuits. The minimum values given for the frequency compensation capacitor are stable only for source resistances less than 10 kQ, stray capacitances on the summing junction less than 5 pF and capacitive loads smaller than 100 pF. If any of these conditions are not met, it becomes necessary to overcompensate the amplifier with a larger compensation Capacitor. Alternately, lead capacitors can be used in the feedback network to negate the effect of stray capacitance and large feedback resistors or an RC network can be add- ed to isolate capacitive toads. Although the LM101A is relatively unaffected by supply by- passing, this cannot be ignored altogether. Generally it is necessary to bypass the supplies to ground at least once on every circuit card, and more bypass points may be required if more than five amplifiers are used. When feed-forward compensation is employed, however, it is advisable to by- pass the supply leads of each amplifier with low inductance capacitors because of the higher frequencies involved. 2-291 VLOSW1/VLOZINT/VLOLATLM101A/LM201A/LM301A Typical Applications** (Continued) Standard Compensation and Offset Balancing Circuit Fast Summing Amplifier Vin Power Bandwidth: 250 kHz Small Signal Bandwidth: 3.5 MHz Slew Rate: 10V/us TL/H/7752-30 TL/H/7752-29 Bilateral Current Source Your c2 300 oF Power Bandwidth: 15 kHz Stew Rate: 1V/ps ci 30 pF Rt 10K lour TL/H/7752-31 TLAH/7752-32 Fast AC/DC Converter* AG c2 20K 10 pF Kn VE R2 R3 10K 1% OUTPUT INPUT *Feedforward compensation can be used to make a fast full = c3* wave rectifier without a filter. 30 pF TL/H/7752-33 **Pin connections shown are for 8-pin packages. 2-292Typical Applications** (Continued) Instrumentation Amplifier OUTPUT R4; R2 = R3 *, tMatching determines CMRA. =_ INPUTS _= 4. TL/H/7752-34 Integrator with Bias Current Compensation Voltage Comparator for Driving RTL Logic or High Current Driver INPUTS TL/H/7752-37 LM301A Your * Adjust for zero integrator drift. Current drift typically 0.1 nA/C over 0C to + 70C 8 temperature range. TLFH/7752-35 Low Frequency Square Wave Generator Al 1M LOW IMPEOANCE OUTPUT CLAMPED OUTPUT TL/H/7752-36 **Pin connections shown are for 8-pin packages. 2-293 VLOEWT/VLOCNT/VEOLWTLM101A/LM201A/LM301A Typical Applications** (continued) Low Drift Sample and Hold Voltage Comparator for Driving ai DTL or TTL Integrated Circuits OUTPUT mg 2N36HA ouTPuT 2 INPUTS ed a INPUT c2* Die p2 0.1 uF Fo77 FDIT? = ci *Polycarbonate-dielectric capacitor TL/H/7752-39 30 pF **Pin connections shown are for 8-pin packages. TL/H/7752-38 2-294