General purpose JFET single operational amplifiers
Features
■ Wide common-mode (up to V
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/µs (typ)
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.
CC
+
) and
TL081
N
DIP8
(Plastic package)
D
SO-8
(Plastic micropackage)
Pin connections
(top view)
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 - V
CC
5 - Offset null 2
6 - Output
+
7 - V
CC
8 - N.C.
June 2008 Rev 3 1/15
www.st.com
15
Schematic diagram TL081
Output
Non-inverting
input
Inverting
input
V
CC
V
CC
100
Ω
1.3k
30k
35k
35k
100
Ω
1.3k
8.2k
Offset Null1 Offset Null2
100
Ω
200
Ω
N1
N2
TL081
100k
Ω
V
CC
1 Schematic diagram
Figure 1. Schematic diagram
Figure 2. Input offset voltage null circuit
2/15
TL081 Absolute maximum ratings
2 Absolute maximum ratings
Table 1. Absolute maximum ratings
Symbol Parameter TL081I, AI, BI
V
CC
V
V
P
tot
Supply voltage
Input voltage
in
Differential input voltage
id
Power dissipation 680 mW
Output short-circuit duration
T
stg
Storage temperature range -65 to +150 °C
Thermal resistance junction to
R
thja
ambient
SO-8
(1)
(2)
(3)
(4)
(5) (6)
DIP8
Thermal resistance junction to case
R
thjc
SO-8
(5) (6)
DIP8
HBM: human body model
ESD
MM: machine model
CDM: charged device model
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 V
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 1.5kΩ 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 Ω), 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
(7)
(8)
(9)
TL081C, AC,
BC
±18 V
±15 V
±30 V
Infinite
125
85
40
41
500 V
200 V
1.5 kV
CC
+
and V
CC
-
.
Unit
°C/W
°C/W
Symbol Parameter TL081I, AI, BI TL081C, AC, BC Unit
Supply voltage range 6 to 36 V
CC
Operating free-air temperature range -40 to +105 0 to +70 °C
T
V
oper
3/15
Electrical characteristics TL081
3 Electrical characteristics
Table 3. VCC = ±15V, T
= +25°C (unless otherwise specified)
amb
Symbol Parameter
Input offset voltage (Rs = 50Ω)
T
= +25°C TL081
amb
TL081A
V
io
≤ T
T
min
amb
≤ T
max
TL081B
TL081
TL081A
TL081B
DV
I
I
Input offset voltage drift 10 10 µV/°C
io
≤ T
≤ T
(1)
max
(1)
max
Input offset current
io
T
amb
T
Input bias current
ib
T
amb
T
= +25°C
≤ T
min
= +25°C
≤ T
min
amb
amb
Large signal voltage gain (RL = 2kΩ, Vo = ±10V)
A
vd
T
T
amb
min
= +25°C
≤ T
amb
≤ T
max
Supply voltage rejection ratio (R
SVR
T
T
amb
min
= +25°C
≤ T
amb
≤ T
max
Supply current, no load
I
CC
V
icm
= +25°C
T
amb
≤ T
T
min
amb
≤ T
max
Input common mode voltage range ±11
Common mode rejection ratio (RS = 50Ω)
CMR
T
T
amb
min
= +25°C
≤ T
amb
≤ T
max
Output short-circuit current
I
os
T
T
amb
min
= +25°C
≤ T
amb
≤ T
max
Output voltage swing
= +25°C RL = 2kΩ
T
T
amb
min
≤ T
amb
≤ T
RL = 10kΩ
RL = 2kΩ
max
±V
opp
R
SR
Slew rate (T
= 10V, RL = 2kΩ, CL = 100pF, unity gain
V
in
= +25°C)
amb
= 10kΩ
L
= 50Ω)
S
TL081I, AC, AI, BC,
BI
TL081C
Unit
Min. Typ. Max. Min. Typ. Max.
3
10
3
6
1
3
13
310
mV
13
7
5
5 100
4
20 200
20
5025200 2515200
808086 707086
1.4 2.5
2.5
+15
-12
±11
808086 707086
101040 6060101040 60
510010pA
20 400
20
1.4 2.5
2.5
+15
-12
nA
nA
V/mV
dB
mA
V
dB
mA
60
10
12
10
12
12
13.5
10
12
10
12
12
13.5
V
816 816 V/µs
4/15
TL081 Electrical characteristics
Table 3. VCC = ±15V, T
Symbol Parameter
= +25°C (unless otherwise specified) (continued)
amb
TL081I, AC, AI, BC,
BI
TL081C
Unit
Min. Typ. Max. Min. Typ. Max.
t
r
K
ov
GBP
R
THD
e
n
Rise time (T
Vin = 20mV, RL = 2kΩ, CL = 100pF, unity gain
Overshoot (T
Vin = 20mV, RL = 2kΩ, CL = 100pF, unity gain
Gain bandwidth product (T
Vin = 10mV, RL = 2kΩ, CL = 100pF, F= 100kHz
Input resistance 10
i
Total harmonic distortion (T
F= 1kHz, R
Vo = 2V
Equivalent input noise voltage
RS = 100Ω, F= 1kHz
= +25°C)
amb
= +25°C)
amb
= +25°C)
amb
= +25°C),
amb
= 2kΩ,CL = 100pF, Av = 20dB,
L
pp
0.1 0.1 µs
10 10 %
2.5 4 2.5 4 MHz
12
10
12
0.01 0.01 %
15 15
∅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.
Ω
nV
-----------Hz
5/15
Electrical characteristics TL081
30
25
20
15
10
5
02468101214 16
MAXIMUM PEAK-TO -PEAK OUTPUT
VOLTAGE (V)
R
L
= 10 k
Ω
T
amb
= +25˚C
SUPPLY VOLTAGE ( V)
Figure 3. Maximum peak-to-peak output
voltage versus frequency
Figure 5. Maximum peak-to-peak output
voltage versus frequency
Figure 4. 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
6/15
TL081 Electrical characteristics
1000
400
200
100
20
40
10
4
2
1
DIFFERENTIAL VOLTAGE
AMPLIFICATION (V/V)
-75 -50 -25 0
25 50 75
100
125
TEMPERATURE (˚C)
R
L
= 2k
Ω
V
O
= 10V
VCC= 15V
0
250
225
200
175
150
125
100
75
50
25
0
TOTAL POW ER DISSIPATION (mW)
-75 -50 -25 0
25
50 75 100 125
TEMPERATURE (˚C)
V
CC
=
15V
No signal
No load
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
SUPPLY CURRENT (mA)
-75 -50 -25 0
25
50 75 100 125
TEMPERATURE (˚C)
V
CC
=
15V
No signal
No load
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
SUPPLY CURRENT (mA)
246810 12 14 16
No signal
No load
= +25˚C
T
amb
SUPPLY VOLTAGE ( V)
Figure 9. Input bias current versus free air
temperature
100
V
15V
=
CC
10
1
0.1
INPUT BIAS CURRENT (nA)
0.01
-50 -25 0 25 50 75 100 125
TEMPERATURE (˚C)
Figure 11. Large signal differential voltage
amplification and phase shift
versus frequency
100
PHASE SHIFT
(right scale)
10
R = 2k
C = 100pF
V = 15V
1
AMPLIFICATION (V/V)
DIFFERENTIAL VOLTAGE
T = +125°C
100
W
L
L
CC
amb
1K 10K 100K 10M1M
FREQUENCY (Hz)
DIFFERENTIAL
VOLTAGE
AMPLIFICATION
(left scale)
Figure 10. Large signal differential voltage
amplification versus free air temp
Figure 12. Total power dissipation versus free
air temperature
180
9
0
Figure 13. Supply current per amplifier versus
free air temperature
Figure 14. Supply current per amplifier versus
supply voltage
7/15
Electrical characteristics TL081
70
60
50
40
30
20
10
0
EQUIVALENT INPUT NOISE
VOLTAGE (nV/VHz)
10 40 100 400 1k 4k 10k 40k 100k
FREQUENCY (Hz)
A
V
= 10
R
S
= 100
Ω
T
amb
= +25˚C
V
CC
= 15V
t
r
28
24
20
16
12
8
4
0
-4
OUTPUT VOLTAGE (mV)
0
0.1 0.2
0.3
0.4
0.5
0.6
0.7
TIME (
μ
s)
10%
90%
OVERSHOOT
R
L
= 2k
Ω
T
amb
= +25˚C
V
CC
= 15V
1
0.4
0.1
0.04
0.01
0.004
0.001
TOTAL HARMONIC DISTORTION
(%)
100 400 1k 4k 10k 40k 100k
FREQUENCY (Hz)
A
V
= 1
T
amb
= +25˚C
V
CC
= 15V
= 6V
V
O
(rms)
A
V
= 1
T
amb
= +25˚C
= 6V
V
O
(rms)
V
CC
= 15V
5
Figure 15. Common mode rejection ratio
versus free air temperature
Figure 16. Equivalent input noise voltage
versus frequency
89
R
= 10 k
Ω
L
88
V
= 15V
CC
87
86
85
RATIO (dB)
84
83
-50 -25 0 25 50 75 100 125
COMMON MODE MODE REJECTION
-75
TEMPERATURE (˚C)
Figure 17. Output voltage versus elapsed time Figure 18. Total harmonic distortion versus
frequency
Figure 19. Voltage follower large signal pulse
response
6
4
2
0
(V)
-2
-4
-6
INPUT AND OUTPUT VOLTAGES
8/15
0 0.5 1 1.5 2 2.5 3 3.
V
CC
R
C
T
amb
OUTPUT
= 15V
= 2 k
L
= 100pF
L
= +25°C
TIME (ms)
INPUT
W
TL081 Parameter measurement information
-
e
I
TL081
R
L
CL= 100pF
1k
Ω
10k
Ω
e
o
4 Parameter measurement information
Figure 20. Voltage follower Figure 21. Gain-of-10 inverting amplifier
9/15
Typical applications TL081
-
TL081
1k
Ω
R
F
= 100k
Ω
9.1k
Ω
3.3k
Ω
+15V
-15V
3.3k
Ω
C = 3.3 μF
F
f =
osc
1
F
2 x R
F
C
5 Typical applications
Figure 22. 0.5 Hz square wave oscillator
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®
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.
11/15
Package information TL081
6.1 DIP 8 package information
Figure 24. DIP8 package mechanical drawing
Table 4. DIP8 package mechanical data
Dimensions
Ref.
Min. Typ. Max. Min. Typ. Max.
A5.330.210
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 10.92 0.430
L 2.92 3.30 3.81 0.115 0.130 0.150
Millimeters Inches
12/15
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. Typ. Max. Min. Typ. Max.
A1.750.069
A1 0.10 0.25 0.004 0.010
A2 1.25 0.049
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 1.27 0.050
h 0.25 0.50 0.010 0.020
L 0.40 1.27 0.016 0.050
k1° 8°1° 8°
ccc 0.10 0.004
Millimeters Inches
13/15
Ordering information TL081
7 Ordering information
Table 6. Order codes
Order code
TL081IN
TL081AIN
TL081BIN
TL081ID/IDT
TL081AID/AIDT
TL081BID/BIDT
TL081IYD/DT
(1)
TL081AIYD/DT
TL081BIYD/DT
TL081CN
TL081ACN
TL081BCN
(1)
(1)
Temperature
range
-40°C, +105°C
Package Packing Marking
DIP8 Tube
SO-8
SO-8
(Automotive grade)
Tub e o r
tape & reel
Tub e o r
tape & reel
DIP8 Tube
TL081IN
TL081AIN
TL081BIN
081I
081AI
081BI
081IY
081AIY
081BIY
TL081CN
TL081ACN
TL081BCN
0°C, +70°C
TL081CD/CDT
TL081ACD/ACDT
SO-8
TL081BCD/BCDT
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.
Tub e o r
tape & reel
081C
081AC
081BC
8 Revision history
Table 7. Document revision history
Date Revision Changes
30-Apr-2001 1 Initial release.
27-Jul-2007 2
27-Jun-2008 3
Added values for R
thja
and R
in Table 1: Absolute maximum
thjc
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.
14/15
TL081
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