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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 High input impedance JFET input stage Internal frequency compensation Latch-up free operation High slew rate: 16 V/s (typ) D SO-8 (Plastic micropackage) Pin connections (top view) N DIP8 (Plastic package)
Description
The TL081, TL081A and TL081B are high-speed JFET input single operational amplifiers incorporating well matched, high-voltage JFET and bipolar transistors in a monolithic integrated 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 - VCC5 - Offset null 2 6 - Output 7 - VCC+ 8 - N.C.
June 2008
Rev 3
1/15
www.st.com 15
Schematic diagram
TL081
1
Schematic diagram
Figure 1. Schematic diagram
V CC
Non-inverting input Inverting input 100 200 Output 100
30k
8.2k
1.3k V CC
35k
1.3k
35k
100
Offset Null1
Offset Null2
Figure 2.
Input offset voltage null circuit
TL081
N1
N2 100k V CC
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TL081
Absolute maximum ratings
2
Absolute maximum ratings
Table 1.
Symbol VCC Vin Vid Ptot
Absolute maximum ratings
Parameter Supply voltage (1) Input voltage
(2) (3)
TL081I, AI, BI 18 15 30 680
TL081C, AC, BC
Unit V V V mW
Differential input voltage Power dissipation
Output short-circuit duration (4) Tstg Storage temperature range Thermal resistance junction to ambient(5) (6) SO-8 DIP8 Thermal resistance junction to case(5) (6) SO-8 DIP8 HBM: human body model(7) ESD MM: machine model(8) CDM: charged device model
(9)
Infinite -65 to +150 C
Rthja
125 85 40 41 500 200 1.5
C/W
Rthjc
C/W V V 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-. 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 1.5k resistor between two pins of the device, done for all couples of pin combinations with other pins floating. 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.
Symbol VCC Toper
Operating conditions
Parameter Supply voltage range Operating free-air temperature range -40 to +105 TL081I, AI, BI TL081C, AC, BC 6 to 36 0 to +70 Unit V C
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Electrical characteristics
TL081
3
Table 3.
Symbol
Electrical characteristics
VCC = 15V, Tamb = +25C (unless otherwise specified)
Parameter TL081I, AC, AI, BC, BI Min. Input offset voltage (Rs = 50) TL081 Tamb = +25C TL081A TL081B Tmin Tamb Tmax TL081 TL081A TL081B Input offset voltage drift Input offset current Tamb = +25C Tmin Tamb Tmax Input bias current (1) Tamb = +25C Tmin Tamb Tmax Large signal voltage gain (RL = 2k Vo = 10V) , Tamb = +25C Tmin Tamb Tmax Supply voltage rejection ratio (RS = 50) Tamb = +25C Tmin Tamb Tmax Supply current, no load Tamb = +25C Tmin Tamb Tmax Input common mode voltage range Common mode rejection ratio (RS = 50) Tamb = +25C Tmin Tamb Tmax Output short-circuit current Tamb = +25C Tmin Tamb Tmax Output voltage swing Tamb = +25C Tmin Tamb Tmax RL = 2k RL = 10k RL = 2k RL = 10k 11 50 25 80 80
(1)
TL081C Unit Min. Typ. Max.
Typ.
Max.
Vio
3 3 1
10 6 3 13 7 5
3
10 mV 13
DVio Iio
10 5 100 4 200 20 25 15 70 70 2.5 2.5 11
10 5 100 10 400 20
V/C pA nA nA
Iib
20
20
Avd
200
200
V/mV
SVR
86
86
dB
ICC
1.4 +15 -12 86
1.4 +15 -12 86
2.5 2.5
mA
Vicm
V
CMR
80 80 10 10 10 12 10 12 8
70 70 60 60 10 10 10 12 10 12 8
dB
Ios
40
40
60 60
mA
Vopp
12 13.5
12 13.5
V
SR
Slew rate (Tamb = +25C) , Vin = 10V, RL = 2k CL = 100pF, unity gain
16
16
V/s
4/15
TL081 Table 3.
Symbol
Electrical characteristics VCC = 15V, Tamb = +25C (unless otherwise specified) (continued)
Parameter TL081I, AC, AI, BC, BI Min. Typ. 0.1 10 2.5 4 1012 0.01 2.5 Max. Min. TL081C Unit Typ. 0.1 10 4 1012 0.01 Max. s % MHz %
tr Kov GBP Ri THD
Rise time (Tamb = +25C) , Vin = 20mV, RL = 2k CL = 100pF, unity gain Overshoot (Tamb = +25C) , Vin = 20mV, RL = 2k CL = 100pF, unity gain Gain bandwidth product (Tamb = +25C) , Vin = 10mV, RL = 2k CL = 100pF, F= 100kHz Input resistance Total harmonic distortion (Tamb = +25C), ,C F= 1kHz, RL = 2k L = 100pF, Av = 20dB, Vo = 2Vpp Equivalent input noise voltage RS = 100, F= 1kHz Phase margin
en m
15 45
15 45
nV ----------Hz
degrees
1. The input bias currents are junction leakage currents which approximately double for every 10C increase in the junction temperature.
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Electrical characteristics
TL081
Figure 3.
Maximum peak-to-peak output voltage versus frequency
Figure 4.
Maximum peak-to-peak output voltage versus frequency
Figure 5.
Maximum peak-to-peak output voltage versus frequency
Figure 6.
Maximum peak-to-peak output voltage versus free air temperature
Figure 7.
Maximum peak-to-peak output voltage versus load resistance
Figure 8.
Maximum peak-to-peak output voltage versus supply voltage
30 25
RL = 10 k Tamb = +25C
MAXIMUM PEAK-TO-PEAK OUTPUT VOLTAGE (V)
20
15 10
5
0 2 4 6 8 10 12 SUPPLY VOLTAGE ( V) 14 16
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TL081
Electrical characteristics
Figure 9.
Input bias current versus free air temperature
Figure 10. Large signal differential voltage amplification versus free air temp
1000
100 V CC = INPUT BIAS CURRENT (nA) 10 1 0.1 15V DIFFERENTIAL VOLTAGE AMPLIFICATION (V/V)
400 200 100 40 20 10 4 2 1 -75
V CC = 15V V O = 10V R L = 2k -50 -25 0 25 50 75 100 125
0.01 -50
-25
0
25
50
75
100
125
TEMPERATURE (C)
TEMPERATURE (C)
Figure 11. Large signal differential voltage amplification and phase shift versus frequency
Figure 12. Total power dissipation versus free air temperature
PHASE SHIFT (right scale)
DIFFERENTIAL VOLTAGE AMPLIFICATION (left scale)
180
10
1 100
R = 2kW L C L = 100pF V CC = 15V T amb = +125C
1K 10K 100K 1M 10M FREQUENCY (Hz)
90
0
TOTAL POWER DISSIPATION (mW)
100
250 225 200 175 150 125 100 75 50 25 0 -75 -50 -25 0 25 50 TEMPERATURE (C)
DIFFERENTIAL VOLTAGE AMPLIFICATION (V/V)
V CC = 15V No signal No load
75
100
125
Figure 13. Supply current per amplifier versus Figure 14. Supply current per amplifier versus free air temperature supply voltage
2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 -75 -50 -25 0 25 50 TEMPERATURE (C) 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0
SUPPLY CURRENT (mA)
SUPPLY CURRENT (mA)
V CC = 15V No signal No load
Tamb = +25C No signal No load
75
100
125
2
4 6 10 12 14 8 SUPPLY VOLTAGE ( V)
16
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Electrical characteristics
TL081
Figure 15. Common mode rejection ratio versus free air temperature
89 COMMON MODE MODE REJECTION RATIO (dB)
Figure 16. Equivalent input noise voltage versus frequency
70 EQUIVALENT INPUT NOISE VOLTAGE (nV/VHz)
88 87 86 85 84 83 -75
R L = 10 k VC C = 15V
60 50 40 30 20 10 0 10 40 100 400 1k
VCC = 15V A V = 10 R S = 100 T amb = +25C
-50
-25
0
25
50
75
100
125
4k
10k
40k 100k
TEMPERATURE (C)
FREQUENCY (Hz)
Figure 17. Output voltage versus elapsed time Figure 18. Total harmonic distortion versus frequency
28
1 TOTAL HARMONIC DISTORTION (%)
OVERSH OOT
OUTPUT VOLTAGE (mV)
24 20 16 12 8 4
10% 90%
0.4 0.1 0.04 0.01 0.004 0.001 100
V V = = 15V 15V CC CC 1 A A V= = 1 V V V O (rms) = 6V O (rms) = 6V T amb = = +25C T amb +25C
V
CC
= 15V
0 -4 0
tr
0.1 0.2 0.3 0.4 TIME (s)
R L = 2k Tamb = +25C
0.5 0.6 0.7
400
1k
4k
10k
40k
100k
FREQUENCY (Hz)
Figure 19. Voltage follower large signal pulse response
INPUT AND OUTPUT VOLTAGES (V) 6 4 2 0 -2 -4 -6 0
VCC=
OUTPUT
INPUT
15V
R L = 2 kW
C L= 100pF Tamb = +25C
0.5
1
1.5
2
2.5
3
3.5
TIME (ms)
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TL081
Parameter measurement information
4
Parameter measurement information
Figure 21. Gain-of-10 inverting amplifier
Figure 20. Voltage follower
10k 1k eI TL081 eo
RL
C L = 100pF
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Typical applications
TL081
5
Typical applications
Figure 22. 0.5 Hz square wave oscillator
R F = 1 0 0k
3.3k +15V TL0 81
1k
C F= 3.3 F
-15V 3.3k
9.1k
f osc=
1 2 x R F CF
Figure 23. High Q notch filter
10/15
TL081
Package information
6
Package information
In order to meet environmental requirements, ST offers these devices in ECOPACK(R) packages. These packages have a lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com.
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Package information
TL081
6.1
DIP 8 package information
Figure 24. DIP8 package mechanical drawing
Table 4.
DIP8 package mechanical data
Dimensions
Ref. Min. A A1 A2 b b2 c D E E1 e eA eB L 2.92 0.38 2.92 0.36 1.14 0.20 9.02 7.62 6.10
Millimeters Typ. Max. 5.33 0.015 3.30 0.46 1.52 0.25 9.27 7.87 6.35 2.54 7.62 10.92 3.30 3.81 0.115 4.95 0.56 1.78 0.36 10.16 8.26 7.11 0.115 0.014 0.045 0.008 0.355 0.300 0.240 Min.
Inches Typ. Max. 0.210
0.130 0.018 0.060 0.010 0.365 0.310 0.250 0.100 0.300
0.195 0.022 0.070 0.014 0.400 0.325 0.280
0.430 0.130 0.150
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TL081
Package information
6.2
SO-8 package information
Figure 25. SO-8 package mechanical drawing
Table 5.
SO-8 package mechanical data
Dimensions
Ref. Min. A A1 A2 b c D E E1 e h L k ccc 0.25 0.40 1 0.10 1.25 0.28 0.17 4.80 5.80 3.80
Millimeters Typ. Max. 1.75 0.25 0.004 0.049 0.48 0.23 4.90 6.00 3.90 1.27 0.50 1.27 8 0.10 0.010 0.016 1 5.00 6.20 4.00 0.011 0.007 0.189 0.228 0.150 Min.
Inches Typ. Max. 0.069 0.010
0.019 0.010 0.193 0.236 0.154 0.050 0.020 0.050 8 0.004 0.197 0.244 0.157
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Ordering information
TL081
7
Ordering information
Table 6. Order codes
Temperature range Package Packing Marking TL081IN TL081AIN TL081BIN 081I 081AI 081BI 081IY 081AIY 081BIY TL081CN TL081ACN TL081BCN 081C 081AC 081BC
Order code TL081IN TL081AIN TL081BIN TL081ID/IDT TL081AID/AIDT TL081BID/BIDT TL081IYD/DT(1) TL081AIYD/DT(1) TL081BIYD/DT(1) TL081CN TL081ACN TL081BCN
DIP8
Tube
-40C, +105C
SO-8
Tube or tape & reel
SO-8 (Automotive grade)
Tube or tape & reel
DIP8 0C, +70C
Tube
TL081CD/CDT TL081ACD/ACDT TL081BCD/BCDT
SO-8
Tube or tape & reel
1. Qualification and characterization according to AEC Q100 and Q003 or equivalent, advanced screening according to AEC Q001 & Q 002 or equivalent are on-going.
8
Revision history
Table 7.
Date 30-Apr-2001
Document revision history
Revision 1 Initial release. Added values for Rthja and Rthjc in Table 1: Absolute maximum ratings. Added Table 2: Operating conditions. Added automotive grade part numbers in Table 6: Order codes. Format update. Removed information concerning military temperature range (TL081Mx, TL081AMx, TL081BMx). Added missing order codes for automotive grade products and updated footnote in Table 6: Order codes. Changes
27-Jul-2007
2
27-Jun-2008
3
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TL081
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