GENERAL PURPOSE J-FET
SINGLE OPERATIONAL AMPLIFIER
.WIDE COMMON-MODE (UP TO VCC+)AND
DIFFERENTIAL VOLTAGERANGE
.LOW INPUT BIAS AND OFFSET CURRENT
.OUTPUTSHORT-CIRCUIT PROTECTION
.HIGH INPUT IMPEDANCE J–FET INPUT
STAGE
.INTERNAL FREQUENCY COMPENSATION
.LATCHUPFREE OPERATION
.HIGH SLEWRATE : 16V/µs (typ)
N
DIP8
(Plastic Package)
1
2
3
4
8
6
5
7
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.
PIN CONNECTIONS (top view)
DESCRIPTION
The TL081, TL081AandTL081Bare high speed
J–FETinputsingleoperationalamplifiersincorporating
wellmatched,high voltageJ–FETand bipolartransis-
torsin a monolithicintegratedcircuit.
Thedevicesfeaturehighslewrates,lowinputbiasand
offsetcurrents, andlow offsetvoltagetemperature
coefficient.
TL081
TL081A - TL081B
December 1998
D
SO8
(Plastic Micropackage)
ORDER CODES
Part Number Temperature
Range Package
ND
TL081M/AM/BM –55oC, +125oC••
TL081I/AI/BI –40oC, +105oC••
TL081C/AC/BC 0oC, +70oC••
Examples : TL081CD, TL081IN
1/9
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
VCC Supply Voltage - (note 1) ±18 V
ViInput Voltage - (note 3) ±15 V
Vid Differential Input Voltage - (note 2) ±30 V
Ptot Power Dissipation 680 mW
Output Short-circuit Duration - (note 4) Infinite
Toper Operating Free Air Temperature Range TL081C,AC,BC
TL081I,AI,BI
TL081M,AM,BM
0to70
–40 to 105
–55 to 125
oC
Tstg Storage Temperature Range –65 to 150 oC
Notes : 1. Allvoltage values, except differential voltage, arewith respect to thezero reference level(ground) of the supply voltageswhere the
zero reference level is the midpoint between VCC+andVCC–.
2. Differentialvoltages are at the non-inverting input terminal withrespect to theinverting input terminal.
3. Themagnitude of the input voltage must never exceed the magnitude of the supply voltage or 15 volts, whichever is less.
4. Theoutput 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.
Output
Non-inverting
input
Inverting
input
VCC
VCC
100Ω
1.3k
30k
35k 35k 100 Ω
1.3k
8.2k
Offset Null1 Offset Null2
100 Ω
200 Ω
SCHEMATIC DIAGRAM
N1 N2
TL081
100k Ω
VCC
INPUT OFFSET VOLTAGE NULL CIRCUITS
TL081 - TL081A - TL081B
2/9
ELECTRICAL CHARACTERISTICS
VCC =±15V, Tamb =25
o
C (unless otherwise specified)
Symbol Parameter TL081I,M,AC,AI,
AM,BC,BI,BM TL081C Unit
Min. Typ. Max. Min. Typ. Max.
Vio Input Offset Voltage (RS=50Ω)
T
amb =25
o
C TL081
TL081A
TL081B
Tmin. ≤Tamb ≤Tmax. TL081
TL081A
TL081B
3
3
1
10
6
3
13
7
5
310
13
mV
DVio Input Offset Voltage Drift 10 10 µV/oC
Iio Input Offset Current *
Tamb =25
o
C
T
min. ≤Tamb ≤Tmax. 5 100
45 100
4pA
nA
Iib Input Bias Current *
Tamb =25
o
C
T
min. ≤Tamb ≤Tmax. 20 200
20 20 400
20 pA
nA
Avd Large Signal Voltage Gain (RL=2kΩ,V
O=±10V)
Tamb =25
o
C
T
min. ≤Tamb ≤Tmax. 50
25 200 25
15 200 V/mV
SVR Supply Voltage Rejection Ratio (RS=50Ω)
T
amb =25
o
C
T
min. ≤Tamb ≤Tmax. 80
80 86 70
70 86 dB
ICC Supply Current, no Load
Tamb =25
o
C
T
min. ≤Tamb ≤Tmax. 1.4 2.5
2.5 1.4 2.5
2.5
mA
Vicm Input Common Mode Voltage Range ±11 +15
-12 ±11 +15
-12 V
CMR Common Mode Rejection Ratio (RS=50Ω)
T
amb =25
o
C
T
min. ≤Tamb ≤Tmax. 80
80 86 70
70 86 dB
Ios Output Short-circuit Current
Tamb =25
o
C
T
min. ≤Tamb ≤Tmax. 10
10 40 60
60 10
10 40 60
60
mA
±VOPP Output Voltage Swing
Tamb =25
o
CR
L
=2kΩ
R
L
= 10kΩ
Tmin. ≤Tamb ≤Tmax. RL=2kΩ
R
L
= 10kΩ
10
12
10
12
12
13.5 10
12
10
12
12
13.5
V
SR Slew Rate (Vin = 10V, RL=2kΩ, CL= 100pF,
Tamb =25
o
C, unity gain) 8 16 8 16 V/µs
trRise Time (Vin = 20mV, RL=2kΩ,C
L= 100pF,
Tamb =25
o
C, unity gain) 0.1 0.1 µs
KOV Overshoot (Vin = 20mV, RL=2kΩ,C
L= 100pF,
Tamb =25
o
C, unity gain) 10 10 %
GBP Gain Bandwidth Product (f = 100kHz,
Tamb =25
o
C, Vin = 10mV, RL=2kΩ,C
L= 100pF) 2.5 4 2.5 4 MHz
RiInput Resistance 1012 1012 Ω
THD Total Harmonic Distortion (f = 1kHz, AV= 20dB,
RL=2kΩ,C
L= 100pF, Tamb =25
o
C, VO=2V
PP) 0.01 0.01 %
enEquivalent Input Noise Voltage
(f = 1kHz, Rs= 100Ω)15 15 nV
√Hz
∅m Phase Margin 45 45 Degrees
* Theinputbias currents arejunction leakage currents which approximately double forevery 10oC increase in thejunction temperature.
TL081 - TL081A - TL081B
3/9
30
20
25
15
10
5
0
MAXIMUM PEAK-TO-PEAKOUTPUT
VOLTAGE(V)
100 1K 10K 100K 10M1M
FREQUENCY (Hz)
See Figure 2
=2kΩ
R
L=+25°C
T
amb
=15VVCC
=5VV
CC
=10VVCC
MAXIMUM PEAK-TO-PEAK OUTPUT
VOLTAGE VERSUS FREQUENCY
30
20
25
15
10
5
0
MAXIMUMPEAK-TO-PEAK OUTPUT
VOLTAGE (V)
100 1K 10K 100K 10M1M
FREQUENCY (Hz)
See Figure 2
=+25
C
T
amb
= 10kΩRL
VCC=10V
VCC =15V
VCC=5V
MAXIMUM PEAK-TO-PEAK OUTPUT
VOLTAGE VERSUS FREQUENCY
30
25
20
15
10
5
0
MAXIMUMPEAK-TO-PEAK OUTPUT
VOLTAGE (V)
FREQUENCY (Hz)
10k 40k 100k 400k 1M 4M 10M
Tamb =+25
C
T
amb =-55
C
T
amb =+125
C
R
L=2k
Ω
See Figure 2
VCC =15V
MAXIMUM PEAK-TO-PEAK OUTPUT
VOLTAGE VERSUS FREQUENCY
30
25
20
10
5
15
0
-75 -25 25 75 125-50 0 50 -50
MAXIMUM PEAK-TO-PEAKOUTPUT
VOLTAGE(V)
TEMPERATURE (°C)
VCC = 15V
See Figure 2
RL= 10kΩ
RL=2kΩ
MAXIMUM PEAK-TO-PEAK OUTPUT
VOLTAGE VERSUS FREE AIR TEMP.
30
25
20
15
10
5
0
MAXIMUM PEAK-TO-PEAKOUTPUT
VOLTAGE (V)
0.1 0.2 0.4 0.7 1 2 4 7 10
Tamb =+25°C
VCC =15V
See Figure 2
LOAD RESISTANCE (k Ω)
MAXIMUM PEAK-TO-PEAK OUTPUT
VOLTAGE VERSUS LOAD RESISTANCE
30
25
20
15
10
5
0246810
12 14 16
MAXIMUM PEAK-TO-PEAKOUTPUT
VOLTAGE(V)
RL=10kΩ
T
amb = +25°C
SUPPLY VOLTAGE(
V)
MAXIMUM PEAK-TO-PEAK OUTPUT
VOLTAGE VERSUS SUPPLY VOLTAGE
TL081 - TL081A - TL081B
4/9
100
10
1
0.1
0.01
INPUT BIAS CURRENT (nA)
-50 -25 0 25 50 75 100 125
TEMPERATURE(°C)
VCC =15V
INPUT BIAS CURRENT VERSUS
FREE AIR TEMPERATURE
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)
RL=2kΩ
V
O= 10V
VCC = 15V
LARGE SIGNAL DIFFERENTIAL
VOLTAGE AMPLIFICATION VERSUS
FREE AIR TEMPERATURE
FREQUENCY (Hz)
DIFFERENTIAL VOLTAGE
AMPLIFICATION (V/V)
100
10
100 1K 10K 100K 10M1M
1
DIFFERENTIAL
VOLTAGE
AMPLIFICATION
(leftscale)
180
90
0
R=2kΩ
C = 100pF
V=15V
T=+125
C
L
L
CC
amb
P HASE SHIFT
(right scale)
LARGE SIGNAL DIFFERENTIAL
VOLTAGE AMPLIFICATION AND PHASE
SHIFT VERSUS FREQUENCY
250
225
200
175
150
125
100
75
50
25
0
TOTAL POWER DISSIPATION (mW)
-75 -50 -25 0 25 50 75 100 125
TEMPERATURE (°C)
VCC =15V
No signal
No load
TOTAL POWER DISSIPATION VERSUS
FREE AIR TEMPERATURE
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)
VCC =15V
No signal
No load
SUPPLY CURRENT PER AMPLIFIER
VERSUS FREE AIR TEMPERATURE
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
SUPPLYCURRENT(mA)
2468
10 12 14 16
No signal
No load
= +25°CTamb
SUPPLY VOLTAGE ( V)
SUPPLY CURRENT PER AMPLIFIER
VERSUS SUPPLY VOLTAGE
TL081 - TL081A - TL081B
5/9
89
88
87
86
85
84
-50 -25 0 25 50 75 100 125
COMMONMODEMODE REJECTION
RATIO(dB)
TEMPERATURE (°C)
83-75
RL=10kΩ
= 15V
VCC
COMMON MODE REJECTION RATIO
VERSUS FREE AIR TEMPERATURE
6
4
2
0
-2
-4
0 0.5 1 1.5 2 2.5 3 3.5
INPUT AND OUTPUT VOLTAGES
(V)
TIME (µs)
-6
=15V
V
CC
RL=2k
Ω
= 100pFCL
Tamb=+25
C
OUTPUT INPUT
VOLTAGE FOLLOWER LARGE SIGNAL
PULSE RESPONSE
tr
28
24
20
16
12
8
4
0
-4
OUTPUT VOLTAGE (mV)
00.1 0.2 0.3 0.4 0.5 0.6 0.7
TIME (µs)
10%
90%
OVERSHOOT
RL=2kΩ
T
amb = +25°C
VCC = 15V
OUTPUT VOLTAGE VERSUS
ELAPSED TIME
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)
AV=10
RS= 100 Ω
Tamb = +25°C
VCC =15V
EQUIVALENT INPUT NOISE VOLTAGE
VERSUS FREQUENCY
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)
AV=1
Tamb = +25°C
VCC = 15V
=6V
VO(rms)
AV=1
Tamb = +25°C
=6V
VO(rms)
VCC = 15V
TOTAL HARMONIC DISTORTION VERSUS
FREQUENCY
TL081 - TL081A - TL081B
6/9
-
eI
TL081 eo
CL= 100pF R=2kΩ
L
Figure 1 : Voltage Follower
PARAMETER MEASUREMENT INFORMATION
-
eI
TL081
RLCL= 100pF
1k Ω
10k Ω
eo
Figure 2 : Gain-of-10 Inverting Amplifier
-
TL081
1k
Ω
RF= 100k Ω
9.1k
Ω
3.3k
Ω
+15V
-15V
3.3k
Ω
C=3.3
µF
F
f=
osc 1
F
2xR F
C
TYPICAL APPLICATIONS
(0.5Hz) SQUARE WAVE OSCILLATOR
TL081
-
R1 R2
C3
R3
C2C1
C1 = C2 = C3
2= 100pF
R1= R2= 2R3 = 1.5MΩ
f=
o1= 1kHz
1
2xR 1
C
HIGH Q NOTCH FILTER
TL081 - TL081A - TL081B
7/9
PACKAGE MECHANICAL DATA
8 PINS - PLASTIC DIP
Dimensions Millimeters Inches
Min. Typ. Max. Min. Typ. Max.
A 3.32 0.131
a1 0.51 0.020
B 1.15 1.65 0.045 0.065
b 0.356 0.55 0.014 0.022
b1 0.204 0.304 0.008 0.012
D 10.92 0.430
E 7.95 9.75 0.313 0.384
e 2.54 0.100
e3 7.62 0.300
e4 7.62 0.300
F 6.6 0260
i 5.08 0.200
L 3.18 3.81 0.125 0.150
Z 1.52 0.060
TL081 - TL081A - TL081B
8/9
PACKAGE MECHANICAL DATA
8 PINS - PLASTIC MICROPACKAGE (SO)
Dimensions Millimeters Inches
Min. Typ. Max. Min. Typ. Max.
A 1.75 0.069
a1 0.1 0.25 0.004 0.010
a2 1.65 0.065
a3 0.65 0.85 0.026 0.033
b 0.35 0.48 0.014 0.019
b1 0.19 0.25 0.007 0.010
C 0.25 0.5 0.010 0.020
c1 45o(typ.)
D 4.8 5.0 0.189 0.197
E 5.8 6.2 0.228 0.244
e 1.27 0.050
e3 3.81 0.150
F 3.8 4.0 0.150 0.157
L 0.4 1.27 0.016 0.050
M 0.6 0.024
S8
o
(max.)
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TL081 - TL081A - TL081B
9/9
