O PA
131
OPA
2131
O PA
4131
OPA
131
OPA
2131
OP
A41
31
OPA
4131
OPA131
OPA2131
OPA4131
SBOS040A – NOVEMBER 1994 – REVISED DECEMBER 2002
General-Purpose
FET-INPUT OPERATIONAL AMPLIFIERS
FEATURES
q
FET INPUT: I
B
= 50pA max
q
LOW OFFSET VOLTAGE: 750
µ
V max
q
WIDE SUPPLY RANGE:
±
4.5V to
±
18V
q
SLEW RATE: 10V/
µ
s
q
WIDE BANDWIDTH: 4MHz
q
EXCELLENT CAPACITIVE LOAD DRIVE
q
SINGLE, DUAL, QUAD VERSIONS
DIP-8, SO-8
Offset Trim
–In
+In
V–
1
2
3
4
OPA131
8
7
6
5
NC
V+
Output
Offset Trim
DESCRIPTION
The OPA131 series of FET-input op amps provides high
performance at low cost. Single, dual, and quad versions in
industry-standard pinouts allow cost-effective design op-
tions.
The OPA131 series offers excellent general-purpose perfor-
mance, including low offset voltage, drift, and good dynamic
characteristics.
Single, dual, and quad versions are available in DIP and SO
packages. Performance grades include commercial and in-
dustrial temperature ranges.
OPA2131
Out A
–In A
+In A
V–
1
2
3
4
DIP-8, SO-8
A
B
8
7
6
5
V+
Out B
–In B
+In B
OPA4131
Out A
–In A
+In A
V+
+In B
–In B
Out B
1
2
A
3
4
5
B
6
7
DIP-14, SO-14
C
9
8
–In C
Out C
–In B
Out B
NC
6
7
8
OPA4131
14
13
D
12
11
10
Out D
–In D
+In D
V–
+In C
Out A
–In A
+In A
V+
+In B
1
2
A
3
4
5
B
C
D
16
15
14
13
12
11
10
9
SOL-16
Out D
–In D
+In D
V–
+In C
–In C
Out C
NC
NC = No Connection
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright © 1994, Texas Instruments Incorporated
www.ti.com
ABSOLUTE MAXIMUM RATINGS
(1)
Supply Voltage, V+ to V– .................................................................... 36V
Input Voltage .................................................. (V–) – 0.7V to (V+) + 0.7V
Output Short-Circuit
(2)
.............................................................. Continuous
Operating Temperature .................................................. –55°C to +125°C
Storage Temperature ..................................................... –55°C to +125°C
Junction Temperature ...................................................................... 150°C
Lead Temperature (soldering, 10s) ................................................. 300°C
NOTES: (1) Stresses above these ratings may cause permanent damage.
Exposure to absolute maximum conditions for extended periods may degrade
device reliability. (2) Short-circuit to ground, one amplifier per package.
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Texas Instru-
ments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.
ESD damage can range from subtle performance degradation
to complete device failure. Precision integrated circuits may be
more susceptible to damage because very small parametric
changes could cause the device not to meet its published
specifications.
PACKAGE/ORDERING INFORMATION
PACKAGE
DESIGNATOR
(1)
D
"
D
"
D
"
D
"
D
"
N
"
DW
"
D
"
SPECIFIED
TEMPERATURE
RANGE
–40°C to +85°C
"
–40°C to +85°C
"
–40°C to +85°C
"
–40°C to +85°C
"
–40°C to +85°C
"
–40°C to +85°C
"
–40°C to +85°C
"
–40°C to +85°C
"
PACKAGE
MARKING
OPA131UJ
"
OPA131UA
"
OPA131U
"
OPA2131UJ
"
OPA2131UA
"
OPA4131PJ
OPA4131PA
OPA4131UA
"
OPA4131NJ
OPA4131NA
ORDERING
NUMBER
OPA131UJ
OPA131UJ/2K5
OPA131UA
OPA131UA/2K5
OPA131U
OPA131U/2K5
OPA2131UJ
OPA2131UJ/2K5
OPA2131UA
OPA2131UA/2K5
OPA4131PJ
OPA4131PA
OPA4131UA
OPA4131UA/1K
OPA4131NJ
OPA4131NA
TRANSPORT
MEDIA, QUANTITY
Rails, 100
Tape and Reel, 2500
Rails, 100
Tape and Reel, 2500
Rails, 100
Tape and Reel, 2500
Rails, 100
Tape and Reel, 2500
Rails, 100
Tape and Reel, 2500
Rails, 25
Rails, 25
Rails, 48
Tape and Reel, 1000
Rails, 58
Rails, 58
PRODUCT
Single
OPA131
"
OPA131
"
OPA131
"
Dual
OPA2131
"
OPA2131
"
Quad
OPA4131
"
OPA4131
"
OPA4131
"
PACKAGE-LEAD
SO-8
"
SO-8
"
SO-8
"
SO-8
"
SO-8
"
DIP-14
"
SOL-16
"
SOL-14
"
NOTE: (1) For the most current specifications and package information, refer to our web site at www.ti.com.
2
OPA131, 2131, 4131
www.ti.com
SBOS040A
ELECTRICAL CHARACTERISTICS
At T
A
= +25°C, V
S
=
±15V,
and R
L
= 2kΩ, unless otherwise noted.
OPA131UA
OPA2131UA
OPA4131PA, UA, NA
PARAMETER
OFFSET VOLTAGE
Input Offset Voltage
OPA131U model only
vs Temperature
(1)
vs Power Supply
OPA131U model only
INPUT BIAS CURRENT
(2)
Input Bias Current
vs Temperature
Input Offset Current
NOISE
Input Voltage Noise
Noise Density, f = 10Hz
f = 100Hz
f = 1kHz
f = 10kHz
Current Noise Density, f = 1kHz
INPUT VOLTAGE RANGE
Common-Mode Voltage Range
Common-Mode Rejection
OPA131U model only
INPUT IMPEDANCE
Differential
Common-Mode
OPEN-LOOP GAIN
Open-Loop Voltage Gain
OPA131U model only
FREQUENCY RESPONSE
Gain-Bandwidth Product
Slew Rate
Settling Time 0.1%
0.01%
Total Harmonic Distortion + Noise
OUTPUT
Voltage Output, Positive
Negative
Short-Circuit Current
POWER SUPPLY
Specified Operating Voltage
Operating Voltage Range
Quiescent Current (per amplifier)
TEMPERATURE RANGE
Operating Range
Storage
Thermal Resistance,
θ
JA
DIP-8
SO-8
DIP-14
SO-14, SOL-16
✻
Specifications same as OPA131UA.
NOTES: (1) Ensured by wafer test. (2) High-speed test at T
J
= 25°C.
(V–) + 3
70
80
CONDITION
MIN
TYP
±0.2
±0.2
±2
50
50
MAX
±1
0.75
±10
200
100
MIN
OPA131UJ
OPA2131UJ
OPA4131PJ, NJ
TYP
✻
✻
✻
MAX
±1.5
✻
✻
UNITS
mV
mV
µV/°C
µV/V
µV/V
pA
pA
Operating Temperature Range
V
S
=
±4.5V
to
±18V
V
CM
= 0V
V
CM
= 0V
+5
±50
See Typical Characteristic
±1
±50
✻
✻
✻
✻
✻
21
16
15
15
3
(V+) – 1
80
86
10
10
|| 1
10
12
|| 3
94
100
110
110
4
10
1.5
2
0.0008
(V+) – 3 (V+) – 2.5
(V–) + 3 (V–) + 2.5
±25
±15
±1.5
✻
✻
✻
✻
✻
✻
✻
✻
✻
✻
✻
✻
nV/√Hz
nV/√Hz
nV/√Hz
nV/√Hz
fA/√Hz
V
dB
dB
Ω
|| pF
Ω
|| pF
dB
dB
MHz
V/µs
µs
µs
%
V
V
mA
V
V
mA
°C
°C
°C/W
°C/W
°C/W
°C/W
V
CM
= –12V to +14V
V
CM
= 0V
V
O
= –12V to +12V
✻
✻
✻
G = –1, 10V Step, C
L
= 100pF
G = –1, 10V Step, C
L
= 100pF
1kHz, G = 1, V
O
= 3.5Vrms
✻
✻
✻
✻
✻
✻
✻
✻
✻
±18
±1.75
+125
+125
✻
✻
–55
✻
✻
✻
✻
✻
✻
±2
+125
✻
±4.5
I
O
= 0
–55
–55
100
150
80
110
OPA131, 2131, 4131
SBOS040A
www.ti.com
3
TYPICAL CHARACTERISTICS
At T
A
= +25°C, V
S
=
±15V,
and R
L
= 2kΩ, unless otherwise noted.
OPEN-LOOP GAIN/PHASE vs FREQUENCY
120
100
–45
0
120
POWER SUPPLY AND COMMON-MODE REJECTION
vs FREQUENCY
120
+PSR
100
80
–PSR
CMR
40
20
0
40
20
0
10
100
1k
10k
100k
1M
Frequency (Hz)
60
100
80
60
Voltage Gain (dB)
80
60
40
–90
–135
20
0
–20
1
10
100
1k
10k
100k
1M
10M
Frequency (Hz)
G
–180
INPUT VOLTAGE AND CURRENT NOISE
SPECTRAL DENSITY vs FREQUENCY
1k
1k
160
Phase Shift (°)
∅
CHANNEL SEPARATION vs FREQUENCY
Channel Separation (dB)
R
L
=
∞
140
Voltage Noise (nV/√Hz)
100
Voltage Noise
100
Current Noise (fA/√Hz)
120
Dual and quad devices.
G = 1, all channels.
Quad measured channel
A to D or B to C—other
combinations yield improved
rejection.
10
100
1k
Frequency (Hz)
R
L
= 2kΩ
10
10
100
Current Noise
1
1
10
100
1k
Frequency (Hz)
10k
100k
1
1M
80
10k
100k
INPUT BIAS AND INPUT OFFSET CURRENT
vs TEMPERATURE
Input Bias and Input Offset Current (pA)
INPUT BIAS CURRENT
vs INPUT COMMON-MODE VOLTAGE
1k
Input bias current is a
function of the voltage
between the V– supply
and the inputs.
100
10k
1k
V
CM
= 0V
100
10
1
0.1
I
B
Input Bias Current (pA)
I
OS
V
S
=
±15V
10
V
S
=
±5V
0.01
–75
–50
–25
0
25
50
75
100
125
Ambient Temperature (°C)
1
–15
–10
–5
0
5
10
15
Common-Mode Voltage (V)
4
OPA131, 2131, 4131
www.ti.com
SBOS040A
Common-Mode Rejection (dB)
Power Supply Rejection (dB)
TYPICAL CHARACTERISTICS
(Cont.)
At T
A
= +25°C, V
S
=
±15V,
and R
L
= 2kΩ, unless otherwise noted.
OPEN-LOOP GAIN vs TEMPERATURE
120
QUIESCENT CURRENT AND SHORT-CIRCUIT CURRENT
vs TEMPERATURE
1.8
I
SC–
Quiescent Current (mA)
40
I
Q
V
S
=
±15V
30
I
SC+
Voltage Gain (dB)
115
1.6
110
1.4
I
Q
V
S
=
±5V
1.2
20
105
10
100
–75
–50
–25
0
25
50
75
100
125
Ambient Temperature (°C)
1
–75
–50
–25
0
25
50
75
100
125
Temperature (°C)
0
OFFSET VOLTAGE
PRODUCTION DISTRIBUTION
20
Typical production distribution
of packaged units. Single,
dual and quad units included.
OFFSET VOLTAGE DRIFT
PRODUCTION DISTRIBUTION
35
30
25
Units (%)
Typical production distribution
of packaged units. Single,
dual and quad units included.
15
Units (%)
20
15
10
5
10
5
0
–1400
–1200
–1000
–800
–600
–400
–200
0
200
400
600
800
1000
1200
1400
0
–7 –6 –5 –4 –3 –2 –1
0
1
2
3
4
5
6
7
Offset Voltage Drift (µV/°C)
Offset Voltage (µV)
TOTAL HARMONIC DISTORTION + NOISE
vs FREQUENCY
1
V
O
= 3.5Vrms
0.1
THD + Noise (%)
MAXIMUM OUTPUT VOLTAGE
vs FREQUENCY
30
V
S
=
±15V
Bandwidth-
Limited
Output Voltage (Vp-p)
20
G = 100V/V
0.01
G = 10V/V
0.001
G = 1V/V
0.0001
10
100
1k
Frequency (Hz)
10k
100k
Maximum output voltage
without slew-rate induced
distortion.
10
V
S
=
±5V
0
10k
100k
Frequency (Hz)
1M
10M
OPA131, 2131, 4131
SBOS040A
www.ti.com
5
Short-Circuit Current (mA)
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