![](/html/84/8460/846025f36569739732e109261882b4986320d960db6967010f2eb038feedca36/bg1.png)
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
![](/html/84/8460/846025f36569739732e109261882b4986320d960db6967010f2eb038feedca36/bg2.png)
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
1 Schematic diagram
Figure 1. Schematic diagram
Figure 2. Input offset voltage null circuit
2/15
![](/html/84/8460/846025f36569739732e109261882b4986320d960db6967010f2eb038feedca36/bg3.png)
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
![](/html/84/8460/846025f36569739732e109261882b4986320d960db6967010f2eb038feedca36/bg4.png)
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
![](/html/84/8460/846025f36569739732e109261882b4986320d960db6967010f2eb038feedca36/bg5.png)
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