UA741 General-purpose single operational amplifier Features ■ Large input voltage range ■ No latch-up ■ High gain ■ Short-circuit protection ■ No frequency compensation required ■ Same pin configuration as the UA709 N DIP8 (plastic package) D SO-8 (plastic micropackage) Applications ■ Summing amplifiers ■ Voltage followers ■ Integrators ■ Active filters ■ Function generators Pin connections (top view) Description The UA741 is a high performance monolithic operational amplifier constructed on a single silicon chip. It is intended for a wide range of analog applications. The high gain and wide range of operating voltages provide superior performances in integrator, summing amplifier and general feedback applications. The internal compensation network (6 dB/octave) ensures stability in closedloop circuits. May 2009 Doc ID 5304 Rev 2 1 8 2 7 3 6 4 5 1 - Offset null 1 2 - Inverting input 3 - Non-inverting input 4 - VCC5 - Offset null 2 6 - Output 7 - VCC+ 8 - N.C. 1/11 www.st.com 11 Schematic diagram 1 UA741 Schematic diagram Figure 1. Schematic diagram Non-Inverting input Vcc+ Q8 Q12 Q9 Q13 Inverting input Q1 Q2 Q14 R7 4.5kW C1 30pF Q18 Q3 R5 39kW Q4 Q15 R9 25W R8 7.5kW Output R10 50W Q16 Q7 Q17 Q20 Q5 Q10 Q6 Q11 Q22 Offset null 1 R3 50kW R1 1kW R2 1kW R4 5kW R12 50kW R11 50W Vcc- Offset null 2 2/11 Doc ID 5304 Rev 2 UA741 2 Absolute maximum ratings and operating conditions Absolute maximum ratings and operating conditions Table 1. Absolute maximum ratings Symbol Parameter Value Unit VCC Supply voltage ±22 V Vid Differential input voltage ±30 V Vi Input voltage ±15 V Output short-circuit duration Infinite Thermal resistance junction to ambient Rthja SO-8 125 85 °C/W 40 41 °C/W HBM: human body model(1) DIP package SO package 500 400 V MM: machine model(2) 100 V CDM: charged device model(3) 1.5 kV -65 to +150 °C DIP8 Thermal resistance junction to case Rthjc SO-8 DIP8 ESD Tstg Storage temperature range 1. Human body model: a 100 pF capacitor is charged to the specified voltage, then discharged through a 1.5kΩ resistor between two pins of the device. This is done for all couples of connected pin combinations while the other pins are floating. 2. Machine model: a 200 pF capacitor is charged to the specified voltage, then discharged directly between two pins of the device with no external series resistor (internal resistor < 5 Ω). This is done for all couples of connected pin combinations while the other pins are floating. 3. Charged device model: all pins and the package are charged together to the specified voltage and then discharged directly to the ground through only one pin. This is done for all pins. Table 2. Operating conditions Symbol Parameter VCC Supply voltage Vicm Common mode input voltage range Toper Operating free air temperature range Doc ID 5304 Rev 2 UA741I UA741C Unit 5 to 40 V ±12 V -40 to +105 0 to +70 °C 3/11 Electrical characteristics UA741 3 Electrical characteristics Table 3. Electrical characteristics at VCC = ±15 V, Tamb = +25° C (unless otherwise specified) Symbol Parameter Min. Typ. Max. Unit Vio Input offset voltage (Rs ≤10 kΩ) Tamb = +25° C Tmin ≤Tamb ≤Tmax 1 5 6 mV Iio Input offset current Tamb = +25° C Tmin ≤Tamb ≤Tmax 2 30 70 nA Iib Input bias current Tamb = +25° C Tmin ≤Tamb ≤Tmax 10 100 200 nA Avd Large signal voltage gain (Vo = ±10 V, RL = 2 kΩ) Tamb = +25° C Tmin ≤Tamb ≤Tmax 50 25 200 V/mV SVR Supply voltage rejection ratio (Rs ≤10 kΩ) Tamb = +25° C Tmin ≤Tamb ≤Tmax 77 77 90 dB ICC Supply current, no load Tamb = +25° C Tmin ≤Tamb ≤Tmax Vicm Input common mode voltage range Tamb = +25° C Tmin ≤Tamb ≤Tmax ±12 ±12 CMR Common mode rejection ratio (RS ≤10 kΩ) Tamb = +25° C Tmin ≤Tamb ≤Tmax 70 70 90 Output short circuit current 10 25 12 10 12 10 14 13 0.25 0.5 IOS ±Vopp SR Output voltage swing Tamb = +25° C Tmin ≤Tamb ≤Tmax 1.7 RL = 10 kΩ RL = 2 kΩ RL = 10 kΩ RL = 2 kΩ Slew rate Vi = ±10 V, RL = 2 kΩ, CL = 100 pF, unity gain Rise time Vi = ±20 mV, RL = 2 kΩ, CL = 100 pF, unity gain 0.3 Kov Overshoot Vi = 20 mV, RL = 2 kΩ, CL = 100 pF, unity gain 5 Ri Input resistance 4/11 Doc ID 5304 Rev 2 mA V tr 0.3 2.8 3.3 2 dB 40 mA V V/μs μs % MΩ UA741 Table 3. Electrical characteristics Electrical characteristics at VCC = ±15 V, Tamb = +25° C (unless otherwise specified) (continued) Symbol Parameter GBP Gain bandwidth product Vi = 10 mV, RL = 2 kΩ, CL = 100 pF, f =100 kHz THD Total harmonic distortion f = 1 kHz, Av = 20 dB, RL = 2 kΩ, Vo = 2 Vpp, CL = 100 pF, Tamb = +25° C Min. Typ. 0.7 1 Max. Unit MHz % 0.06 en Equivalent input noise voltage f = 1 kHz, Rs = 100 Ω 23 nV -----------Hz ∅m Phase margin 50 Degree Doc ID 5304 Rev 2 5/11 Package information 4 UA741 Package information In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK® is an ST trademark. 6/11 Doc ID 5304 Rev 2 UA741 4.1 Package information DIP8 package information Figure 2. DIP8 package mechanical drawing Table 4. DIP8 package mechanical data Dimensions Ref. Millimeters Min. Typ. A Inches Max. Min. Typ. 5.33 Max. 0.210 A1 0.38 0.015 A2 2.92 3.30 4.95 0.115 0.130 0.195 b 0.36 0.46 0.56 0.014 0.018 0.022 b2 1.14 1.52 1.78 0.045 0.060 0.070 c 0.20 0.25 0.36 0.008 0.010 0.014 D 9.02 9.27 10.16 0.355 0.365 0.400 E 7.62 7.87 8.26 0.300 0.310 0.325 E1 6.10 6.35 7.11 0.240 0.250 0.280 e 2.54 0.100 eA 7.62 0.300 eB L 10.92 2.92 3.30 3.81 Doc ID 5304 Rev 2 0.430 0.115 0.130 0.150 7/11 Package information 4.2 UA741 SO-8 package information Figure 3. SO-8 package mechanical drawing Table 5. SO-8 package mechanical data Dimensions Ref. Millimeters Min. Typ. A Max. Min. Typ. 1.75 0.25 Max. 0.069 A1 0.10 A2 1.25 b 0.28 0.48 0.011 0.019 c 0.17 0.23 0.007 0.010 D 4.80 4.90 5.00 0.189 0.193 0.197 E 5.80 6.00 6.20 0.228 0.236 0.244 E1 3.80 3.90 4.00 0.150 0.154 0.157 e 0.004 0.010 0.049 1.27 0.050 h 0.25 0.50 0.010 0.020 L 0.40 1.27 0.016 0.050 L1 k ccc 8/11 Inches 1.04 0 0.040 8° 0.10 Doc ID 5304 Rev 2 1° 8° 0.004 UA741 5 Ordering information Ordering information Table 6. Order codes Order code Temperature range UA741CN Package Packing Marking DIP8 Tube UA741CN SO-8 Tube or tape & reel UA741C DIP8 Tube UA741IN SO-8 Tube or tape & reel UA741I 0° C, +70° C UA741CD/CDT UA741IN -40° C, +105° C UA741ID/IDT Doc ID 5304 Rev 2 9/11 Revision history 6 UA741 Revision history Table 7. Document revision history Date Revision 01-Nov-2001 1 Initial release. 2 Document reformatted. Added ESD values and thermal resistances in Table 1: Absolute maximum ratings. Added Table 2: Operating conditions. Removed UA741M information and order code in Table 6. 25-May-2009 10/11 Changes Doc ID 5304 Rev 2 UA741 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. 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