LM124A/LM124QML Low Power Quad Operational Amplifiers General Description Advantages The LM124/124A consists of four independent, high gain, internally frequency compensated operational amplifiers which were designed specifically to operate from a single power supply over a wide range of voltages. Operation from split power supplies is also possible and the low power supply current drain is independent of the magnitude of the power supply voltage. n Eliminates need for dual supplies n Four internally compensated op amps in a single package n Allows directly sensing near GND and VOUT also goes to GND n Compatible with all forms of logic n Power drain suitable for battery operation Application areas include transducer amplifiers, DC gain blocks and all the conventional op amp circuits which now can be more easily implemented in single power supply systems. For example, the LM124/124A can be directly operated off of the standard +5Vdc power supply voltage which is used in digital systems and will easily provide the required interface electronics without requiring the additional +15Vdc power supplies. Unique Characteristics n In the linear mode the input common-mode voltage range includes ground and the output voltage can also swing to ground, even though operated from only a single power supply voltage n The unity gain cross frequency is temperature compensated n The input bias current is also temperature compensated Features n Internally frequency compensated for unity gain n Large DC voltage gain 100 dB n Wide bandwidth (unity gain) 1 MHz (temperature compensated) n Wide power supply range: Single supply 3V to 32V or dual supplies ± 1.5V to ± 16V n Very low supply current drain (700 µA) — essentially independent of supply voltage n Low input biasing current 45 nA (temperature compensated) n Low input offset voltage 2 mV and offset current: 5 nA n Input common-mode voltage range includes ground n Differential input voltage range equal to the power supply voltage n Large output voltage swing 0V to V+ − 1.5V Ordering Information NS PART NUMBER SMD PART NUMBER NS PACKAGE NUMBER LM124J/883 7704301CA J14A 14LD CERDIP LM124AE/883 77043022A E20A 20LD LEADLESS CHIP CARRIER LM124AJ/883 7704302CA J14A 14LD CERDIP LM124AW/883 W14B PACKAGE DISCRIPTION 14LD CERPACK LM124AWG/883 7704302XA WG14A LM124AJLQMLV 5962L9950401VCA, 50k rd(Si) J14A 14LD CERDIP LM124AJRQMLV 5962R9950401VCA, 100k rd(Si) J14A 14LD CERDIP LM124AWGLQMLV 5962L9950401VZA, 50k rd(Si) WG14A 14LD CERAMIC SOIC LM124AWGRQMLV 5962R9950401VZA, 100k rd(Si) WG14A 14LD CERAMIC SOIC LM124AWLQMLV 5962L9950401VDA, 50k rd(Si) W14B 14LD CERPACK LM124AWRQMLV 5962R9950401VDA, 100k rd(Si) W14B 14LD CERPACK © 2005 National Semiconductor Corporation DS201080 14LD CERAMIC SOIC www.national.com LM124A/LM124QML Low Power Quad Operational Amplifiers January 2005 LM124A/LM124QML Connection Diagrams Leadless Chip Carrier 20108055 See NS Package Number E20A Dual-In-Line Package 20108001 Top View See NS Package Number J14A 20108033 See NS Package Number W14B or WG14A www.national.com 2 LM124A/LM124QML Schematic Diagram (Each Amplifier) 20108002 3 www.national.com LM124A/LM124QML Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage, V+ 32Vdc or +16Vdc Differential Input Voltage 32Vdc Input Voltage −0.3Vdc to +32Vdc Input Current (VIN < −0.3Vdc) (Note 4) 50 mA Power Dissipation (Note 2) CERDIP 1260mW CERPACK 700mW LCC 1350mW CERAMIC SOIC 700mW Output Short-Circuit to GND (One Amplifier) (Note 3) V+ ≤ 15Vdc and TA = 25˚C Continuous −55˚C ≤ TA ≤ +125˚C Operating Temperature Range Maximum Junction Temperature 150˚C −65˚C ≤ TA ≤ +150˚C Storage Temperature Range Lead Temperature (Soldering, 10 seconds) 260˚C Thermal Resistance ThetaJA CERDIP (Still Air) 103 C/W (500LF/Min Air flow) 51 C/W CERPACK (Still Air) 176 C/W (500LF/Min Air flow) 116 C/W LCC (Still Air) 91 C/W (500LF/Min Air flow) 66 C/W CERAMIC SOIC (Still Air) 176 C/W (500LF/Min Air flow) 116 C/W ThetaJC CERDIP 19 C/W CERPACK 18 C/W LCC 24 C/W CERAMIC SOIC 18 C/W Package Weight (Typical) CERDIP TBD CERPACK TBD LCC TBD CERAMIC SOIC 410mg ESD Tolerance (Note 5) 250V Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test conditions. Note 2: The maximum power dissipation must be derated at elevated temperatures and is dictated by Tjmax (maximum junction temperature), ThetaJA (package junction to ambient thermal resistance), and TA (ambient temperature). The maximum allowable power dissipation at any temperature is Pdmax = (Tjmax TA)/ThetaJA or the number given in the Absolute Maximum Ratings, whichever is lower. Note 3: Short circuits from the output to V+ can cause excessive heating and eventual destruction. When considering short circuits to ground, the maximum output current is approximately 40mA independent of the magnitude of V+. At values of supply voltage in excess of +15Vdc, continuous short-circuits can exceed the power dissipation ratings and cause eventual destruction. Destructive dissipation can result from simultaneous shorts on all amplifiers. Note 4: This input current will only exist when the voltage at any of the input leads is driven negative. It is due to the collector-base junction of the input PNP transistors becoming forward biased and thereby acting as input diode clamps. In addition to this diode action, there is also lateral NPN parasitic transistor action on the IC chip. This transistor action can cause the output voltages of the op amps to go to the V+ voltage level (or to ground for a large overdrive) for the time duration that an input is driven negative. This is not destructive and normal output states will re-establish when the input voltage, which was negative, again returns to a value greater than -0.3Vdc (at 25 C). Note 5: Human body model, 1.5 kΩ in series with 100 pF. www.national.com 4 LM124A/LM124QML Quality Conformance Inspection MIL-STD-883, Method 5005 — Group A Subgroup Description Temp ( ˚C) 1 Static tests at +25 2 Static tests at +125 3 Static tests at -55 4 Dynamic tests at +25 5 Dynamic tests at +125 6 Dynamic tests at -55 7 Functional tests at +25 8A Functional tests at +125 8B Functional tests at -55 9 Switching tests at +25 10 Switching tests at +125 11 Switching tests at -55 5 www.national.com LM124A/LM124QML LM124A 883 DC Electrical Characteristics (The following conditions apply to all the following parameters, unless otherwise specified.) All voltages referenced to device ground. SYMBOL PARAMETER CONDITIONS Icc Power Supply Current V+ = 5V NOTES MIN V+ = 30V Isink Output Sink Current SUBGROUPS 1.2 mA 1, 2, 3 3.0 mA 1 4.0 mA 2, 3 uA 1 12 V+ = 15V, Vout = 2V, +Vin = 0mV, -Vin = +65mV 10 mA 1 5 mA 2, 3 mA 1 Output Source Current V+ = 15V, Vout = 2V, +Vin = 0mV, -Vin = -65mV Ios Short Circuit Current V+ = 5V, Vout = 0V -60 Vio Input Offset Voltage V+ = 30V, Vcm = 0V -2 -4 V+ = 30V, Vcm = 28.5V V+ = 30V, Vcm = 28V -20 -10 mA 2, 3 mA 1 2 mV 1 4 mV 2, 3 -2 2 mV 1 -4 4 mV 2, 3 V+ = 5V, Vcm = 0V -2 2 mV 1 -4 4 mV 2, 3 dB 1 10 nA 1 10 nA 2, 3 -10 10 nA 1 -30 30 nA 2, 3 dB 1 1 CMRR Common Mode Rejection Ratio V+ = 30V, Vin = 0V to 28.5V 70 ± Iib Input Bias Current V+ = 5V, Vcm = 0V -50 -100 Input Offset Current UNIT V+ = 15V, Vout = 200mV, +Vin = 0mV, -Vin = +65mV Isource Iio MAX V+ = 5V, Vcm = 0V PSRR Power Supply Rejection Ratio V+ = 5V to 30V, Vcm = 0V 65 Vcm Common Mode Voltage Range V+ = 30V Avs Large Signal Gain V+ = 15V, Rl = 2K Ohms, Vo = 1V to 11V 25 V/mV 5, 6 Voh Output Voltage High V+ = 30V, Rl = 2K Ohms 26 V 4, 5, 6 V+ = 30V, Rl = 10K Ohms 27 V 4, 5, 6 Vol Output Voltage Low V+ = 30V, Rl = 10K Ohms 40 mV 4, 5, 6 V+ = 30V, Isink = 1uA 40 mV 4 100 mV 5, 6 20 mV 4, 5, 6 dB 4 (Note 6) 28.5 V (Note 6) 28 V 2, 3 V/mV 4 (Note 7) (Note 7) 50 V+ = 5V, Rl = 10K Ohms Channel Separation 1KHz, 20KHz Amp to Amp Coupling www.national.com (Note 8) 6 80 (The following conditions apply to all the following parameters, unless otherwise specified.) All voltages referenced to device ground. SYMBOL PARAMETER CONDITIONS Icc Power Supply Current V+ = 5V NOTES MIN V+ = 30V Isink Output Sink Current MAX UNIT SUBGROUPS 1.2 mA 1, 2, 3 3.0 mA 1 4.0 mA 2, 3 uA 1 V+ = 15V, Vout = 200mV, +Vin = 0mV, -Vin = +65mV 12 V+ = 15V, Vout = 2V, +Vin = 0mV, -Vin = +65mV 10 mA 1 5 mA 2, 3 mA 1 Isource Output Source Current V+ = 15V, Vout = 2V, +Vin = 0mV, -Vin = -65mV -20 Ios Short Circuit Current V+ = 5V, Vout = 0V -60 Vio Input Offset Voltage V+ = 30V, Vcm = 0V -5 -7 -10 mA 2, 3 mA 1 5 mV 1 7 mV 2, 3 -5 5 mV 1 -7 7 mV 2, 3 V+ = 5V, Vcm = 0V -5 5 mV 1 -7 7 mV 2, 3 V+ = 30V, Vcm = 28.5V -5 5 mV 1 dB 1 nA 1 V+ = 30V, Vcm = 28V CMRR Common Mode Rejection Ratio V+ = 30V, Vin = 0V to 28.5V 70 +Iib Input Bias Current V+ = 5V, Vcm = 0V -150 -300 10 nA 2, 3 Iio Input Offset Current V+ = 5V, Vcm = 0V -30 30 nA 1 -100 100 nA 2, 3 dB 1 PSRR Power Supply Rejection Ratio V+ = 5V to 30V, Vcm = 0V Vcm Common Mode Voltage Range V+ = 30V Large Signal Gain V+ = 15V, Rl = 2K Ohms, Vo = 1V to 11V Avs Voh Vol Output Voltage High Output Voltage Low 65 (Note 6) 28.5 V 1 (Note 6) 28 V 2, 3 50 V/mV 4 25 V/mV 5, 6 V+ = 30V, Rl = 2K Ohms 26 V 4, 5, 6 V+ = 30V, Rl = 10K Ohms 27 V 4, 5, 6 V+ = 30V, Rl = 10K Ohms 40 mV 4, 5, 6 V+ = 30V, Isink = 1uA 40 mV 4 100 mV 5, 6 V+ = 5V, Rl = 10K Ohms Channel Separation (Amp to Amp Coupling) 10 20 1KHz, 20KHz (Note 8) 7 80 mV 4, 5, 6 dB 4 www.national.com LM124A/LM124QML LM124 883 DC Electrical Characteristics LM124A/LM124QML LM124A RAD HARD DC Electrical Characteristics (Note 10) (The following conditions apply to all the following parameters, unless otherwise specified.) All voltages referenced to device ground. SYMBOL PARAMETER CONDITIONS Vio Input Offset Voltage Iio ± Iib Input Offset Current Input Bias Current MIN MAX UNIT SUBGROUPS Vcc+ = 30V, Vcc- = Gnd, Vcm = -15V -2 2 mV 1 -4 4 mV 2, 3 Vcc+ = 2V, Vcc- = -28V, Vcm = 13V -2 2 mV 1 -4 4 mV 2, 3 Vcc+ = 5V, Vcc- = Gnd, Vcm = -1.4V -2 2 mV 1 -4 4 mV 2, 3 Vcc+ = 2.5V, Vcc- = -2.5, Vcm = 1.1V -2 2 mV 1 -4 4 mV 2, 3 Vcc+ = 30V, Vcc- = Gnd, Vcm = -15V -10 10 nA 1, 2 -30 30 nA 3 Vcc+ = 2V, Vcc- = -28V, Vcm = 13V -10 10 nA 1, 2 -30 30 nA 3 Vcc+ = 5V, Vcc- = Gnd, Vcm = -1.4V -10 10 nA 1, 2 -30 30 nA 3 Vcc+ = 2.5V, Vcc- = -2.5, Vcm = 1.1V -10 10 nA 1, 2 -30 30 nA 3 Vcc+ = 30V, Vcc- = Gnd, Vcm = -15V -50 +0.1 nA 1, 2 -100 +0.1 nA 3 Vcc+ = 2V, Vcc- = -28V, Vcm = 13V -50 +0.1 nA 1, 2 -100 +0.1 nA 3 Vcc+ = 5V, Vcc- = Gnd, Vcm = -1.4V -50 +0.1 nA 1, 2 -100 +0.1 nA 3 Vcc+ = 2.5V, Vcc- = -2.5, Vcm = 1.1V -50 +0.1 nA 1, 2 -100 +0.1 nA 3 Vcc- = Gnd, Vcm = -1.4V, 5V ≤ Vcc ≤ 30V -100 100 uV/V 1, 2, 3 76 dB 1, 2, 3 -70 mA 1, 2,3 mA 1, 2 +PSRR Power Supply Rejection Ratio CMRR Common Mode Rejection Ratio Ios+ Output Short Circiut Current Icc Power Supply Current Vcc+ = 30V, Vcc- = Gnd Delta Vio/ Delta T Input Offset Voltage Temperature Sensitivity Delta Iio/ Delta T Input Offset Current Temperature Sensitivity www.national.com NOTES Vcc+ = 30V, Vcc- = Gnd, Vo = 25V 3 4 mA 3 (Note 9) -30 30 uV/ ˚C 2 -55˚C ≤ TA ≤ +25˚C, +Vcc = 5V, (Note 9) -Vcc = 0V, Vcm = -1.4V -30 30 uV/ ˚C 3 +25˚C ≤ TA ≤ +125˚C, +Vcc = 5V, -Vcc = 0V, Vcm = -1.4V (Note 9) -400 400 pA/˚ C 2 -55˚C ≤ TA ≤ +25˚C, +Vcc = 5V, (Note 9) -Vcc = 0V, Vcm = -1.4V -700 700 pA/ ˚C 3 +25˚C ≤ TA ≤ +125˚C, +Vcc = 5V, -Vcc = 0V, Vcm = -1.4V 8 (Note 10) (The following conditions apply to all the following parameters, unless otherwise specified.) All voltages referenced to device ground. SYMBOL PARAMETER CONDITIONS Vol Logical "0" Output Voltage Voh Avs+ Avs +Vop Logical "1" Output Voltage Voltage Gain Voltage Gain Maximum Output Voltage Swing NOTES MIN MAX UNIT SUBGROUPS Vcc+ = 30V, Vcc- = Gnd, Rl = 10K Ohms 35 mV 4, 5, 6 Vcc+ = 30V, Vcc- = Gnd, Iol = 5mA 1.5 V 4, 5, 6 Vcc+ = 4.5V, Vcc- = Gnd, Iol = 2uA 0.4 V 4, 5, 6 Vcc+ = 30V, Vcc- = Gnd, Ioh = -10mA 27 V 4, 5, 6 Vcc+ = 4.5V, Vcc- = Gnd, Ioh = -10mA 2.4 V 4, 5, 6 Vcc+ = 30V, Vcc- = Gnd, 1V ≤ Vo ≤ 26V, Rl = 10K Ohms 50 V/mV 4 25 V/mV 5, 6 Vcc+ = 30V, Vcc- = Gnd, 5V ≤ Vo ≤ 20V, Rl = 2K Ohms 50 V/mV 4 25 V/mV 5, 6 Vcc+ = 5V, Vcc- = Gnd, 1V ≤ Vo ≤ 2.5V, Rl = 10K Ohms 10 V/mV 4, 5, 6 Vcc+ = 5V, Vcc- = Gnd, 1V ≤ Vo ≤ 2.5V, Rl = 2K Ohms 10 V/mV 4, 5, 6 Vcc+ = 30V, Vcc- = Gnd, Vo = +30V, Rl = 10K Ohms 27 V 4, 5, 6 Vcc+ = 30V, Vcc- = Gnd, Vo = +30V, Rl = 2K Ohms 26 V 4, 5, 6 TR(tr) Transient Response: Rise Time Vcc+ = 30V, Vcc- = Gnd 1 uS 7, 8A, 8B TR(os) Transient Response: Overshoot Vcc+ = 30V, Vcc- = Gnd 50 % 7, 8A, 8B ± Sr Slew Rate: Rise Vcc+ = 30V, Vcc- = Gnd 0.1 V/uS 7, 8A, 8B Slew Rate: Fall Vcc+ = 30V, Vcc- = Gnd 0.1 V/uS 7, 8A, 8B 9 www.national.com LM124A/LM124QML LM124A RAD HARD AC/DC Electrical Characteristics LM124A/LM124QML LM124A RAD HARD — AC Electrical Characteristics (Note 10) (The following conditions apply to all the following parameters, unless otherwise specified.) AC: +Vcc = 30V, -Vcc = 0V SYMBOL PARAMETER CONDITIONS NI(BB) Noise Broadband NI(PC) Cs MAX UNIT SUBGROUPS +Vcc = 15V, -Vcc = -15V, BW = 10Hz to 5KHz 15 uVrm s 7 Noise Popcorn +Vcc = 15V, -Vcc = -15V, Rs = 20K Ohms, BW = 10Hz to 5KHz 50 uVpK 7 Channel Separation +Vcc = 30V, -Vcc = Gnd, Rl = 2K Ohms 80 dB 7 Rl = 2K Ohms, Vin = 1V and 16V, A to B 80 dB 7 Rl = 2K Ohms, Vin = 1V and 16V, A to C 80 dB 7 Rl = 2K Ohms, Vin = 1V and 16V, A to D 80 dB 7 Rl = 2K Ohms, Vin = 1V and 16V, B to A 80 dB 7 Rl = 2K Ohms, Vin = 1V and 16V, B to C 80 dB 7 Rl = 2K Ohms, Vin = 1V and 16V, B to D 80 dB 7 Rl = 2K Ohms, Vin = 1V and 16V, C to A 80 dB 7 Rl = 2K Ohms, Vin = 1V and 16V, C to B 80 dB 7 Rl = 2K Ohms, Vin = 1V and 16V, C to D 80 dB 7 Rl = 2K Ohms, Vin = 1V and 16V, D to A 80 dB 7 Rl = 2K Ohms, Vin = 1V and 16V, D to B 80 dB 7 Rl = 2K Ohms, Vin = 1V and 16V, D to C 80 dB 7 www.national.com NOTES 10 MIN (Note 10) (The following conditions apply to all the following parameters, unless otherwise specified.) DC: "Delta calculationsperformed on QMLV devices at group B, subgroup 5 only" SYMBOL PARAMETER CONDITIONS Vio Input Offset Voltage ± Iib Input Bias Current NOTES MIN MAX UNIT SUBGROUPS Vcc+ = 30V, Vcc- = Gnd, Vcm = -15V -0.5 0.5 mV 1 Vcc+ = 30V, Vcc- = Gnd, Vcm = -15V -10 10 nA 1 Electrical Characteristics — POST RADIATION LIMITS +25˚C (Note 10) (The following conditions apply to all the following parameters, unless otherwise specified.) All voltages referenced to device ground. SYMBOL PARAMETER CONDITIONS NOTES MIN MAX UNIT SUBGROUPS Vio Input Offset Voltage Vcc+ = 30V, Vcc- = Gnd, Vcm = -15V (Note 10) -2.5 2.5 mV 1 Vcc+ = 2V, Vcc- = -28V, Vcm = 13V (Note 10) -2.5 2.5 mV 1 Vcc+ = 5V, Vcc- = GND, Vcm = -1.4V (Note 10) -2.5 2.5 mV 1 Vcc+ = 2.5V, Vcc- = -2.5, Vcm = 1.1V (Note 10) -2.5 2.5 mV 1 Vcc+ = 30V, Vcc- = GND, Vcm = -15V (Note 10) -15 15 nA 1 Vcc+ = 2V, Vcc- = -28V, Vcm = 13V (Note 10) -15 15 nA 1 Vcc+ = 5V, Vcc- = GND, Vcm = -1.4V (Note 10) -15 15 nA 1 Vcc+ = 2.5V, Vcc- = -2.5V, Vcm = 1.1V (Note 10) -15 15 nA 1 Vcc+ = 30V, Vcc- = GND, Vcm = -15V (Note 10) -75 +0.1 nA 1 Vcc+ = 2V, Vcc- = -28V, Vcm = 13V (Note 10) -75 +0.1 nA 1 Vcc+ = 5V, Vcc- = GND, Vcm = -1.4V (Note 10) -75 +0.1 nA 1 Vcc+ = 2.5V, Vcc- = -2.5V, Vcm = 1.1V (Note 10) -75 +0.1 nA 1 Vcc+ = 30V, Vcc- = GND, 1V ≤ Vo ≤ 26V, Rl = 10K Ohms (Note 10) 40 V/mV 4 Vcc+ = 30V, Vcc- = GND, 5V ≤ Vo ≤ 20V, Rl = 2K Ohms (Note 10) 40 V/mV 4 Iio ± Iib Avs+ Input Offset Current Input Bias Current Voltage Gain Note 6: Guaranteed by Vio tests. Note 7: Datalog reading in K=V/mV Note 8: Guaranteed, not tested Note 9: Calculated parameters Note 10: Pre and post irradiation limits are identical to those listed under AC and DC electrical characteristics except as listed in the Post Radiation Limits Table. These parts may be dose rate sensitive in a space environment and demonstrate enhanced low dose rate effect. Radiation end point limits for the noted parameters are guaranteed only for the conditions as specified in MIL-STD-883, Method 1019 11 www.national.com LM124A/LM124QML LM124A RAD HARD — DC Drift Values LM124A/LM124QML Typical Performance Characteristics Input Voltage Range Input Current 20108034 20108035 Supply Current Voltage Gain 20108036 20108037 Open Loop Frequency Response Common Mode Rejection Ratio 20108038 20108039 www.national.com 12 LM124A/LM124QML Typical Performance Characteristics (Continued) Voltage Follower Pulse Response Voltage Follower Pulse Response (Small Signal) 20108041 20108040 Large Signal Frequency Response Output Characteristics Current Sourcing 20108042 20108043 Output Characteristics Current Sinking Current Limiting 20108044 20108045 13 www.national.com LM124A/LM124QML Where the load is directly coupled, as in dc applications, there is no crossover distortion. Capacitive loads which are applied directly to the output of the amplifier reduce the loop stability margin. Values of 50 pF can be accommodated using the worst-case noninverting unity gain connection. Large closed loop gains or resistive isolation should be used if larger load capacitance must be driven by the amplifier. The bias network of the LM124 establishes a drain current which is independent of the magnitude of the power supply voltage over the range of from 3 VDC to 30 VDC. Application Hints The LM124 series are op amps which operate with only a single power supply voltage, have true-differential inputs, and remain in the linear mode with an input common-mode voltage of 0 VDC. These amplifiers operate over a wide range of power supply voltage with little change in performance characteristics. At 25˚C amplifier operation is possible down to a minimum supply voltage of 2.3 VDC. The pinouts of the package have been designed to simplify PC board layouts. Inverting inputs are adjacent to outputs for all of the amplifiers and the outputs have also been placed at the corners of the package (pins 1, 7, 8, and 14). Output short circuits either to ground or to the positive power supply should be of short time duration. Units can be destroyed, not as a result of the short circuit current causing metal fusing, but rather due to the large increase in IC chip dissipation which will cause eventual failure due to excessive junction temperatures. Putting direct short-circuits on more than one amplifier at a time will increase the total IC power dissipation to destructive levels, if not properly protected with external dissipation limiting resistors in series with the output leads of the amplifiers. The larger value of output source current which is available at 25˚C provides a larger output current capability at elevated temperatures (see typical performance characteristics) than a standard IC op amp. The circuits presented in the section on typical applications emphasize operation on only a single power supply voltage. If complementary power supplies are available, all of the standard op amp circuits can be used. In general, introducing a pseudo-ground (a bias voltage reference of V+/2) will allow operation above and below this value in single power supply systems. Many application circuits are shown which take advantage of the wide input common-mode voltage range which includes ground. In most cases, input biasing is not required and input voltages which range to ground can easily be accommodated. Precautions should be taken to insure that the power supply for the integrated circuit never becomes reversed in polarity or that the unit is not inadvertently installed backwards in a test socket as an unlimited current surge through the resulting forward diode within the IC could cause fusing of the internal conductors and result in a destroyed unit. Large differential input voltages can be easily accommodated and, as input differential voltage protection diodes are not needed, no large input currents result from large differential input voltages. The differential input voltage may be larger than V+ without damaging the device. Protection should be provided to prevent the input voltages from going negative more than −0.3 VDC (at 25˚C). An input clamp diode with a resistor to the IC input terminal can be used. To reduce the power supply drain, the amplifiers have a class A output stage for small signal levels which converts to class B in a large signal mode. This allows the amplifiers to both source and sink large output currents. Therefore both NPN and PNP external current boost transistors can be used to extend the power capability of the basic amplifiers. The output voltage needs to raise approximately 1 diode drop above ground to bias the on-chip vertical PNP transistor for output current sinking applications. For ac applications, where the load is capacitively coupled to the output of the amplifier, a resistor should be used, from the output of the amplifier to ground to increase the class A bias current and prevent crossover distortion. www.national.com 14 LM124A/LM124QML Typical Single-Supply Applications (V+ = 5.0 VDC) Non-Inverting DC Gain (0V Input = 0V Output) 20108005 *R not needed due to temperature independent IIN DC Summing Amplifier (VIN’S ≥ 0 VDC and VO ≥ VDC) Power Amplifier 20108007 20108006 V0 = 0 VDC for VIN = 0 VDC Where: V0 = V1 + V2 − V3 − V4 AV = 10 (V1 + V2) ≥ (V3 + V4) to keep VO > 0 VDC 15 www.national.com LM124A/LM124QML Typical Single-Supply Applications (V+ = 5.0 VDC) LED Driver (Continued) “BI-QUAD” RC Active Bandpass Filter 20108008 20108009 fo = 1 kHz Q = 50 AV = 100 (40 dB) Fixed Current Sources Lamp Driver 20108011 20108010 www.national.com 16 LM124A/LM124QML Typical Single-Supply Applications Pulse Generator (V+ = 5.0 VDC) (Continued) Current Monitor 20108015 Squarewave Oscillator 20108012 *(Increase R1 for IL small) Driving TTL 20108016 Pulse Generator 20108013 Voltage Follower 20108014 20108017 17 www.national.com LM124A/LM124QML Typical Single-Supply Applications (V+ = 5.0 VDC) (Continued) High Compliance Current Sink 20108018 IO = 1 amp/volt VIN (Increase RE for Io small) Low Drift Peak Detector 20108019 www.national.com 18 Comparator with Hysteresis (Continued) Ground Referencing a Differential Input Signal 20108020 20108021 VO = VR Voltage Controlled Oscillator Circuit 20108022 *Wide control voltage range: 0 VDC ≤ VC ≤ 2 (V+ −1.5 VDC) Photo Voltaic-Cell Amplifier 20108023 19 www.national.com LM124A/LM124QML Typical Single-Supply Applications (V+ = 5.0 VDC) LM124A/LM124QML Typical Single-Supply Applications (V+ = 5.0 VDC) (Continued) AC Coupled Inverting Amplifier 20108024 AC Coupled Non-Inverting Amplifier 20108025 www.national.com 20 LM124A/LM124QML Typical Single-Supply Applications (V+ = 5.0 VDC) (Continued) DC Coupled Low-Pass RC Active Filter 20108026 fO = 1 kHz Q=1 AV = 2 High Input Z, DC Differential Amplifier 20108027 21 www.national.com LM124A/LM124QML Typical Single-Supply Applications (V+ = 5.0 VDC) (Continued) High Input Z Adjustable-Gain DC Instrumentation Amplifier 20108028 Using Symmetrical Amplifiers to Reduce Input Current (General Concept) Bridge Current Amplifier 20108030 20108029 www.national.com 22 LM124A/LM124QML Typical Single-Supply Applications (V+ = 5.0 VDC) (Continued) Bandpass Active Filter 20108031 fO = 1 kHz Q = 25 23 www.national.com LM124A/LM124QML Revision History Section Date Released Section Originator Changes 9–2–04 A New Release, Corporate format R. Malone 3 MDS data sheets converted into one Corp. data sheet format. MNLM124-X, Rev. 1A2, MNLM124A-X, Rev. 1A3 and MRLM124A-X-RH, Rev. 5A0. MDS data sheets will be archived. 01/27/05 B Connection Diagrams, Quality Conformance Inspection Section, and Physical Dimensions drawings R. Malone Added E package Connection Diagram. Changed verbiage under Quality Conformance Title, and Updated Revisions for the Marketing Drawings. www.national.com Revision 24 LM124A/LM124QML Physical Dimensions inches (millimeters) unless otherwise noted SAMPLE TEXT Ceramic Dual-In-Line Package (J) NS Package Number J14A SAMPLE TEXT 20 Pin Leadless Chip Carrier, Type C (E) NS Package Number E20A 25 www.national.com LM124A/LM124QML Physical Dimensions inches (millimeters) unless otherwise noted (Continued) SAMPLE TEXT Ceramic Flatpak Package NS Package Number W14B SAMPLE TEXT 14-Pin Ceramic Package (WG) NS Package Number WG14A www.national.com 26 LM124A/LM124QML Low Power Quad Operational Amplifiers Notes National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. For the most current product information visit us at www.national.com. LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. BANNED SUBSTANCE COMPLIANCE National Semiconductor certifies that the products and packing materials meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. National Semiconductor Americas Customer Support Center Email: [email protected] Tel: 1-800-272-9959 www.national.com National Semiconductor Europe Customer Support Center Fax: +49 (0) 180-530 85 86 Email: [email protected] Deutsch Tel: +49 (0) 69 9508 6208 English Tel: +44 (0) 870 24 0 2171 Français Tel: +33 (0) 1 41 91 8790 National Semiconductor Asia Pacific Customer Support Center Email: [email protected] National Semiconductor Japan Customer Support Center Fax: 81-3-5639-7507 Email: [email protected] Tel: 81-3-5639-7560