General purpose JFET single operational amplifiers

1 TL081. General purpose jfet single operational amplifiers Features Wide common-mode (up to VCC+) and differential voltage range Low input bias and offset current Output short-circuit protection N. DIP8. High input impedance jfet input stage (Plastic package). Internal frequency compensation Latch-up free operation High slew rate: 16 V/ s (typ). D. Description SO-8. (Plastic micropackage). The TL081, TL081A and TL081B are high-speed jfet input single operational amplifiers incorporating well matched, high-voltage jfet Pin connections and bipolar transistors in a monolithic integrated (top view).

2 Circuit. The devices feature high slew rates, low input bias and offset currents, and low offset voltage temperature coefficient. 1 - Offset null 1. 2 - Inverting input 3 - Non-inverting input 4 - VCC- 5 - Offset null 2. 6 - Output 7 - VCC+. 8 - June 2008 Rev 3 1/15. 15. Schematic diagram TL081. 1 Schematic diagram Figure 1. Schematic diagram V CC. Non-inverting input Inverting input 100 . 200 . Output 100 . 30k 35k 35k 100 . V CC. Offset Null1 Offset Null2. Figure 2. input offset voltage null circuit TL081. N1 N2. 100k . V CC. 2/15. TL081 Absolute maximum ratings 2 Absolute maximum ratings Table 1.

3 Absolute maximum ratings TL081C, AC, Symbol Parameter TL081I, AI, BI Unit BC. VCC Supply voltage (1) 18 V. (2). Vin input voltage 15 V. (3). Vid Differential input voltage 30 V. Ptot Power dissipation 680 mW. Output short-circuit duration (4) Infinite Tstg Storage temperature range -65 to +150 C. Thermal resistance junction to ambient(5) (6). Rthja C/W. SO-8 125. DIP8 85. Thermal resistance junction to case(5) (6). Rthjc SO-8 40 C/W. DIP8 41. HBM: human body model(7) 500 V. ESD MM: machine model(8) 200 V. (9). CDM: charged device model kV. 1. All voltage values, except differential voltage, are with respect to the zero reference level (ground) of the supply voltages where the zero reference level is the midpoint between VCC+ and VCC.

4 2. The magnitude of the input voltage must never exceed the magnitude of the supply voltage or 15 volts, whichever is less. 3. Differential voltages are the non-inverting input terminal with respect to the inverting input terminal. 4. The output may be shorted to ground or to either supply. Temperature and/or supply voltages must be limited to ensure that the dissipation rating is not exceeded. 5. Short-circuits can cause excessive heating and destructive dissipation. 6. Rth are typical values. 7. Human body model: 100 pF discharged through a resistor between two pins of the device, done for all couples of pin combinations with other pins floating.

5 8. Machine model: a 200 pF cap is charged to the specified voltage, then discharged directly between two pins of the device with no external series resistor (internal resistor < 5 ), done for all couples of pin combinations with other pins floating. 9. Charged device model: all pins plus package are charged together to the specified voltage and then discharged directly to the ground. Table 2. Operating conditions Symbol Parameter TL081I, AI, BI TL081C, AC, BC Unit VCC Supply voltage range 6 to 36 V. Toper Operating free-air temperature range -40 to +105 0 to +70 C. 3/15. Electrical characteristics TL081.

6 3 Electrical characteristics Table 3. VCC = 15V, Tamb = +25 C (unless otherwise specified). TL081I, AC, AI, BC, TL081C. BI. Symbol Parameter Unit Min. Typ. Max. Min. Typ. Max. input offset voltage (Rs = 50 ). Tamb = +25 C TL081 3 10 3 10. TL081A 3 6. Vio TL081B 1 3 mV. Tmin Tamb Tmax TL081 13 13. TL081A 7. TL081B 5. DVio input offset voltage drift 10 10 V/ C. (1). input offset current Iio Tamb = +25 C 5 100 5 100 pA. Tmin Tamb Tmax 4 10 nA. input bias current (1). Iib Tamb = +25 C 20 200 20 400 nA. Tmin Tamb Tmax 20 20. Large signal voltage gain (RL = 2k , Vo = 10V). Avd Tamb = +25 C 50 200 25 200 V/mV.

7 Tmin Tamb Tmax 25 15. Supply voltage rejection ratio (RS = 50 ). SVR Tamb = +25 C 80 86 70 86 dB. Tmin Tamb Tmax 80 70. Supply current, no load ICC Tamb = +25 C mA. Tmin Tamb Tmax +15 +15. Vicm input common mode voltage range 11 11 V. -12 -12. Common mode rejection ratio (RS = 50 ). CMR Tamb = +25 C 80 86 70 86 dB. Tmin Tamb Tmax 80 70. Output short-circuit current Ios Tamb = +25 C 10 40 60 10 40 60 mA. Tmin Tamb Tmax 10 60 10 60. Output voltage swing Tamb = +25 C RL = 2k 10 12 10 12. Vopp RL = 10k 12 12 V. Tmin Tamb Tmax RL = 2k 10 10. RL = 10k 12 12. Slew rate (Tamb = +25 C).

8 SR 8 16 8 16 V/ s Vin = 10V, RL = 2k , CL = 100pF, unity gain 4/15. TL081 Electrical characteristics Table 3. VCC = 15V, Tamb = +25 C (unless otherwise specified) (continued). TL081I, AC, AI, BC, TL081C. BI. Symbol Parameter Unit Min. Typ. Max. Min. Typ. Max. Rise time (Tamb = +25 C). tr s Vin = 20mV, RL = 2k , CL = 100pF, unity gain Overshoot (Tamb = +25 C). Kov 10 10 %. Vin = 20mV, RL = 2k , CL = 100pF, unity gain Gain bandwidth product (Tamb = +25 C). GBP 4 4 MHz Vin = 10mV, RL = 2k , CL = 100pF, F= 100kHz Ri input resistance 1012 1012 . Total harmonic distortion (Tamb = +25 C), THD F= 1kHz, RL = 2k ,CL = 100pF, Av = 20dB, %.

9 Vo = 2 Vpp Equivalent input noise voltage nV. en 15 15 ------------ RS = 100 , F= 1kHz Hz m Phase margin 45 45 degrees 1. The input bias currents are junction leakage currents which approximately double for every 10 C increase in the junction temperature. 5/15. Electrical characteristics TL081. Figure 3. Maximum peak-to-peak output Figure 4. Maximum peak-to-peak output voltage versus frequency voltage versus frequency Figure 5. Maximum peak-to-peak output Figure 6. Maximum peak-to-peak output voltage versus frequency voltage versus free air temperature Figure 7. Maximum peak-to-peak output Figure 8.

10 Maximum peak-to-peak output voltage versus load resistance voltage versus supply voltage 30. MAXIMUM PEAK-TO-PEAK OUTPUT. RL = 10 k . 25. Tamb = +25 C. 20. VOLTAGE (V). 15. 10. 5. 0 2 4 6 8 10 12 14 16. SUPPLY VOLTAGE ( V). 6/15. TL081 Electrical characteristics Figure 9. input bias current versus free air Figure 10. Large signal differential voltage temperature amplification versus free air temp 100 1000. V CC = 15V 400. input BIAS CURRENT (nA). 200. DIFFERENTIAL VOLTAGE. 10. AMPLIFICATION (V/V). 100. 1 40. 20. 10 V CC = 15V. V O = 10V. 4. 2 R L = 2k . 1. -50 -25 0 25 50 75 100 125 -75 -50 -25 0 25 50 75 100 125.