TL081C,AC
TL082C,AC
JFET Input Operational
Amplifiers
These low–cost JFET input operational amplifiers combine two state–of–
the–art linear technologies on a single monolithic integrated circuit. Each
internally compensated operational amplifier has well matched high voltage
JFET input devices for low input offset voltage. The BIFET technology
provides wide bandwidths and fast slew rates with low input bias currents,
input offset currents, and supply currents.
These devices are available in single, dual and quad operational
amplifiers which are pin–compatible with the industry standard MC1741,
MC1458, and the MC3403/LM324 bipolar products.
•
Input Offset Voltage Options of 6.0 mV and 15 mV Max
TL084C,AC
JFET INPUT
OPERATIONAL AMPLIFIERS
SEMICONDUCTOR
TECHNICAL DATA
•
•
•
•
•
•
Low Input Bias Current: 30 pA
Low Input Offset Current: 5.0 pA
Wide Gain Bandwidth: 4.0 MHz
High Slew Rate: 13 V/µs
Low Supply Current: 1.4 mA per Amplifier
High Input Impedance: 1012
Ω
8
1
8
1
P SUFFIX
PLASTIC PACKAGE
CASE 626
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
PIN CONNECTIONS
Offset Null 1
Inv + Input
2
VCC
Q2
Q1
Q6
8
7
Representative Circuit Schematic
(Each Amplifier)
Output
Q4
Q3
–
Inputs
+
J1
J2
Q17
Q20
Q15
Q14
Q21
Q12
Q10
Q13
Q11
Q16
Q9
Q8
Q7
Q25
Q22 Q24
10 pF
Q19
Q23
24
J3
2.0 k
Q5
NC
VCC
Output
Offset Null
Noninvt Input
VEE
3
4
+
6
5
TL081 (Top View)
Output A
Inputs A
VEE
1
2
3
4
–
+
–
+
8
7
6
5
VCC
Output B
Inputs B
TL082 (Top View)
Offset
Null
(TL081
only)
Q18
1.5 k
1.5 k
Bias Circuitry
Common to All
Amplifiers
VEE
14
1
N SUFFIX
PLASTIC PACKAGE
CASE 646
PIN CONNECTIONS
Output 1 1
14
–
+
Output 4
Inputs 4
VEE
Inputs 3
Output 3
ORDERING INFORMATION
Op Amp
Function
Single
Device
TL081ACD, CD
TL081ACP, CP
TL082ACD, CD
Dual
Quad
TL082ACP, CP
TL084ACN, CN
Operating
Temperature Range
TA = 0
°
to +70
°
C
TA = 0
°
to +70
°
C
TA = 0
°
to +70
°
C
Package
SO–8
Plastic DIP
SO–8
Plastic DIP
Plastic DIP
Inputs 1
VCC
Inputs 2
2
3
4
5
6
13
1
4
–
+
12
11
+
–
2
3
+
–
10
9
8
Output 2
7
TL084 (Top View)
MOTOROLA ANALOG IC DEVICE DATA
2–325
TL081C,AC TL082C,AC TL084C,AC
MAXIMUM RATINGS
Rating
Supply Voltage
Differential Input Voltage
Input Voltage Range (Note 1)
Output Short Circuit Duration (Note 2)
Power Dissipation
Plastic Package (N, P)
Derate above TA = +47°C
Operating Ambient Temperature Range
Storage Temperature Range
Symbol
VCC
VEE
VID
VIDR
tSC
PD
1/θJA
TA
Tstg
Value
+18
–18
±30
±15
Continuous
680
10
0 to +70
–65 to +150
mW
mW/°C
°C
°C
Unit
V
V
V
NOTES:
1. The magnitude of the input voltage must not exceed the magnitude of the supply voltage or 15 V,
whichever is less.
2. The output may be shorted to ground or either supply. Temperature and/or supply voltages must be
limited to ensure that power dissipation ratings are not exceeded.
ELECTRICAL CHARACTERISTICS
(VCC = +15 V, VEE = –15 V, TA = Tlow to Thigh [Note 3].)
Characteristics
Input Offset Voltage (RS
≤
10 k, VCM = 0)
TL081C, TL082C
TL084C
TL08_AC
Input Offset Current (VCM = 0) (Note 4)
TL08_C
TL08_AC
Input Bias Current (VCM = 0) (Note 4)
TL08_C
TL08_AC
Large–Signal Voltage Gain (VO=
±10
V,RL
≥
2.0 k)
TL08_C
TL08_AC
Output Voltage Swing (Peak–to–Peak)
(RL
≥
10 k)
(RL
≥
2.0 k)
Symbol
VIO
Min
—
—
—
—
—
—
—
15
25
24
20
Typ
—
—
—
—
—
—
—
—
—
—
—
Max
20
20
7.5
nA
5.0
3.0
nA
10
7.0
V/mV
—
—
V
—
—
Unit
mV
IIO
IIB
AVOL
VO
NOTES:
3. Tlow = 0°C for TL081AC,C
Thigh = +70°C for TL081AC
0°C for
TL082AC,C
+70°C for
TL082AC,C
0°C for
TL084AC,C
+70°C for
TL084AC,C
4. Input Bias currents of JFET input op amps approximately double for every 10°C rise in Junction Temperature as shown in Figure 3. To maintain
junction temperature as close to ambient temperature as possible, pulse techniques must be used during testing.
Figure 1. Unity Gain Voltage Follower
Figure 2. Inverting Gain of 10 Amplifier
10 k
–
+
Vin
RL = 2.0 k
CL = 100 pF
VO
Vin
1.0 k
–
+
VO
RL
CL = 100 pF
2–326
MOTOROLA ANALOG IC DEVICE DATA
TL081C,AC TL082C,AC TL084C,AC
ELECTRICAL CHARACTERISTICS
(VCC = +15 V, VEE = –15 V, TA = +25°C, unless otherwise noted.)
Characteristics
Input Offset Voltage (RS
≤
10 k, VCM = 0)
TL081C, TL082C
TL084C
TL08_AC
Average Temperature Coefficient of Input Offset Voltage
RS = 50
Ω,
TA = Tlow to Thigh (Note 3)
Input Offset Current (VCM = 0) (Note 4)
TL08_C
TL08_AC
Input Bias Current (VCM = 0) (Note 4)
TL08_C
TL08_AC
Input Resistance
Common Mode Input Voltage Range
TL08_C
TL08_AC
Large Signal Voltage Gain (VO =
±10
V, RL
≥
2.0 k)
TL08_C
TL08_AC
Output Voltage Swing (Peak–to–Peak)
(RL = 10 k)
Common Mode Rejection Ratio (RS
≤
10 k)
TL08_C
TL08_AC
Supply Voltage Rejection Ratio (RS
≤
10 k)
TL08_C
TL08_AC
Supply Current (Each Amplifier)
Unity Gain Bandwidth
Slew Rate (See Figure 1)
Vin = 10 V, RL = 2.0 k, CL = 100 pF
Rise Time (See Figure 1)
Overshoot (Vin = 20 mV, RL = 2.0 k, CL = 100 pF)
Equivalent Input Noise Voltage
RS = 100
Ω,
f = 1000 Hz
Channel Separation
AV = 100
Symbol
VIO
—
—
—
∆V
IO/∆T
IIO
—
—
IIB
—
—
ri
VICR
±10
±11
25
50
VO
CMRR
70
80
PSRR
70
80
ID
BW
SR
tr
OS
en
CS
100
100
1.4
4.0
13
0.1
10
25
120
—
—
2.8
mA
MHz
V/µs
µs
%
nV/
√
Hz
dB
100
100
—
—
dB
24
30
30
1012
+15, –12
+15, –12
150
150
28
400
200
—
—
V/mV
—
—
V
dB
Ω
V
5.0
5.0
200
100
pA
5.0
5.0
3.0
10
15
15
6.0
µV/°C
pA
Min
Typ
Max
Unit
mV
AVOL
NOTES:
3. Tlow = 0°C for TL081AC,C
Thigh = +70°C for TL081AC
0°C for
TL082AC,C
+70°C for
TL082AC,C
0°C for
TL084AC,C
+70°C for
TL084AC,C
4. Input Bias currents of JFET input op amps approximately double for every 10°C rise in Junction Temperature as shown in Figure 3. To maintain
junction temperature as close to ambient temperature as possible, pulse techniques must be used during testing.
MOTOROLA ANALOG IC DEVICE DATA
2–327
TL081C,AC TL082C,AC TL084C,AC
Figure 3. Input Bias Current
versus Temperature
100
VO, OUTPUT VOLTAGE SWING (Vpp )
I IB , INPUT BIAS CURRENT (nA)
VCC/VEE =
±15
V
30
25
20
15
10
5.0
0
100
1.0 k
10 k
100 k
1.0 M
10 M
±5.0
V
±10
V
VCC/VEE =
±15
V
RL = 2.0 k
TA = 25°C
(See Figure 2)
Figure 4. Output Voltage Swing
versus Frequency
10
1.0
0.1
0.01
–75
–50
–25
0
25
50
75
100
125
TA, AMBIENT TEMPERATURE (°C)
f, FREQUENCY (Hz)
Figure 5. Output Voltage Swing
versus Load Resistance
40
VO, OUTPUT VOLTAGE SWING (Vpp )
30
20
10
VO, OUTPUT VOLTAGE SWING (Vpp)
VCC/VEE =
±15
V
TA = 25°C
(See Figure 2)
Figure 6. Output Voltage Swing
versus Supply Voltage
RL = 2.0 k
TA = 25°C
30
20
10
5.0
0
0.1
0.2
0.4
0.7 1.0
2.0
4.0
7.0
10
0
0
5.0
10
15
20
RL, LOAD RESISTANCE (kΩ)
VCC, |VEE| , SUPPLY VOLTAGE (±V)
Figure 7. Output Voltage Swing
versus Temperature
VO, OUTPUT VOLTAGE SWING (Vpp )
35
30
25
20
15
10
5.0
0
–50
–25
0
25
50
75
100
125
RL = 2.0 k
I D , SUPPLY DRAIN CURRENT (mA)
VCC/VEE =
±15
V
(See Figure 2)
RL = 10 k
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
Figure 8. Supply Current per Amplifier
versus Temperature
VCC/VEE =
±15
V
–50
–25
0
25
50
75
100
125
TA, AMBIENT TEMPERATURE (°C)
TA, AMBIENT TEMPERATURE (°C)
2–328
MOTOROLA ANALOG IC DEVICE DATA
TL081C,AC TL082C,AC TL084C,AC
Figure 9. Large Signal Voltage Gain and
Phase Shift versus Frequency
A VOL , OPEN–LOOP GAIN (V/mV)
1000
PHASE SHIFT (DEGREES)
VCC/VEE =
±15
V
RL = 2.0 k
TA = 25°C
0°
Gain
45°
90°
Phase Shift
135°
10
100
1.0 k
10 k
100 k
1.0 M 10 M
180°
A VOL , OPEN–LOOP GAIN (V/mV)
VCC/VEE =
±15
V
VO =
±10
V
RL = 2.0 k
100
Figure 10. Large Signal Voltage Gain
versus Temperature
106
105
104
103
102
101
1
1.0
10
1.0
–50
–25
0
25
50
75
100
125
f, FREQUENCY (Hz)
TA, AMBIENT TEMPERATURE (°C)
e n , EQUIVALENT INPUT NOISE VOLTAGE (
nV/
√
Hz
)
Figure 11. Normalized Slew Rate
versus Temperature
1.15
NORMALIZED SLEW RATE
1.10
1.05
1.00
0.95
0.90
0.85
–50
–25
0
25
50
75
100
125
Figure 12. Equivalent Input Noise Voltage
versus Frequency
VCC/VEE =
±15
V
AV = 10
RS = 100
Ω
TA = 25°C
60
50
40
30
20
10
0
0.01
0.05 0.1
0.5 1.0
f, FREQUENCY (Hz)
5.0 10
50 100
TA, AMBIENT TEMPERATURE (°C)
Figure 13. Total Harmonic Distortion
versus Frequency
THD, TOTAL HARMONIC DISTORTION (%)
1.0
0.5
0.1
0.05
0.01
0.005
0.001
0.1
VCC/VEE =
±15
V
AV = 1.0
VO = 6.0 V (RMS)
TA = 25°C
0.5
1.0
5.0
10
50
100
f, FREQUENCY (Hz)
MOTOROLA ANALOG IC DEVICE DATA
2–329
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