FEATURES
● FET INPUT: IB = 50pA max
● WIDE BANDWIDTH: 8MHz
● HIGH SLEW RATE: 20V/µs
● LOW NOISE: 8nV/√Hz (1kHz)
● LOW DISTORTION: 0.00008%
● HIGH OPEN-LOOP GAIN: 130dB (600Ω load)
●WIDE SUPPLY RANGE: ±2.5 to ±18V
●LOW OFFSET VOLTAGE: 500µV max
● SINGLE, DUAL, AND QUAD VERSIONS
International Airport Industrial Park • Mailing Address: PO Box 11400 • Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd. • Tucson, AZ 85706
Tel: (520) 746-1111 • Twx: 910-952-1111 • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
1
2
3
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5
6
7
14
13
12
11
10
9
8
Out D
–In D
+In D
V–
+In C
–In C
Out C
Out A
–In A
+In A
V+
+In B
–In B
Out B
OPA4132
14-Pin DIP
SO-14
AD
BC
OPA132
OPA2132
OPA132
OPA2132
OPA4132
OPA4132
OPA132
OPA2132
OPA4132
®
1
2
3
4
8
7
6
5
Offset Trim
V+
Output
NC
Offset Trim
–In
+In
V–
OPA132
8-Pin DIP, SO-8
1
2
3
4
8
7
6
5
V+
Out B
–In B
+In B
Out A
–In A
+In A
V–
OPA2132
8-Pin DIP, SO-8
A
B
High Speed
FET-INPUT OPERATIONAL AMPLIFIERS
DESCRIPTION
The OPA132 series of FET-input op amps provides
high-speed and excellent dc performance. The combi-
nation of high slew rate and wide bandwidth provide
fast settling time. Single, dual, and quad versions have
identical specifications for maximum design flexibil-
ity. High performance grades are available in the
single and dual versions. All are ideal for general-
purpose, audio, data acquisition and communications
applications, especially where high source impedance
is encountered.
OPA132 op amps are easy to use and free from phase
inversion and overload problems often found in
common FET-input op amps. Input cascode circuitry
provides excellent common-mode rejection and
maintains low input bias current over its wide input
voltage range. OPA132 series op amps are stable in
unity gain and provide excellent dynamic behavior
over a wide range of load conditions, including high
load capacitance. Dual and quad versions feature
completely independent circuitry for lowest crosstalk
and freedom from interaction, even when overdriven
or overloaded.
Single and dual versions are available in 8-pin DIP
and SO-8 surface-mount packages. Quad is
available in 14-pin DIP and SO-14 surface-mount
packages. All are specified for –40°C to +85°C
operation.
PDS-1309B
© 1995 Burr-Brown Corporation PDS-1309B Printed in U.S.A. December, 1995
2
®
OPA132, 2132, 4132
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.
SPECIFICATIONS
At TA = +25°C, VS = ±15V, unless otherwise noted.
OPA132P, U
OPA2132P, U
OPA132PA, UA
OPA2132PA, UA
OPA4132PA, UA
PARAMETER CONDITION MIN TYP MAX MIN TYP MAX UNITS
OFFSET VOLTAGE
Input Offset Voltage ±0.25 ±0.5 ±0.5 ±2mV
vs Temperature(1) Operating Temperature Range ±2±10 * * µV/°C
vs Power Supply VS = ±2.5V to ±18V 5 15 * 30 µV/V
Channel Separation (dual and quad) RL = 2kΩ0.2 * µV/V
INPUT BIAS CURRENT
Input Bias Current(2) VCM = 0V +5 ±50 * * pA
vs Temperature See Typical Curve *
Input Offset Current(2) VCM = 0V ±2±50 * * pA
NOISE
Input Voltage Noise
Noise Density, f = 10Hz 23 * nV/√Hz
f = 100Hz 10 * nV/√Hz
f = 1kHz 8 * nV/√Hz
f = 10kHz 8 * nV/√Hz
Current Noise Density, f = 1kHz 3 * fA/√Hz
INPUT VOLTAGE RANGE
Common-Mode Voltage Range (V–)+2.5 ±13 (V+)–2.5 * * * V
Common-Mode Rejection VCM = –12.5V to +12.5V 96 100 86 94 dB
INPUT IMPEDANCE
Differential 1013 || 2 * Ω || pF
Common-Mode VCM = –12.5V to +12.5V 1013 || 6 * Ω || pF
OPEN-LOOP GAIN
Open-Loop Voltage Gain RL = 10kΩ, VO = –14.5V to +13.8V 110 120 104 * dB
RL = 2kΩ, VO = –13.8V to +13.5V 110 126 104 120 dB
RL = 600Ω, VO = –12.8V to +12.5V 110 130 104 120 dB
FREQUENCY RESPONSE
Gain-Bandwidth Product 8 * MHz
Slew Rate ±20 * V/µs
Settling Time: 0.1% G = –1, 10V Step, CL = 100pF 0.7 * µs
0.01% G = –1, 10V Step, CL = 100pF 1 * µs
Overload Recovery Time G = ±1 0.5 * µs
Total Harmonic Distortion + Noise 1kHz, G = 1, VO = 3.5Vrms
RL = 2kΩ0.00008 * %
RL = 600Ω0.00009 * %
OUTPUT
Voltage Output, Positive RL = 10kΩ(V+)–1.2 (V+)–0.9 * * V
Negative (V–)+0.5 (V–)+0.3 * * V
Positive RL = 2kΩ(V+)–1.5 (V+)–1.2 * * V
Negative (V–)+1.2 (V–)+0.9 * * V
Positive RL = 600Ω(V+)–2.5 (V+)–2.0 * * V
Negative (V–)+2.2 (V–)+1.9 * * V
Short-Circuit Current ±40 * mA
Capacitive Load Drive (Stable Operation) See Typical Curve *
POWER SUPPLY
Specified Operating Voltage ±15 * V
Operating Voltage Range ±2.5 ±18 * * V
Quiescent Current (per amplifier) IO = 0 ±4±4.8 * * mA
TEMPERATURE RANGE
Operating Range –40 +85 * * °C
Storage –40 +125 * * °C
Thermal Resistance,
θ
JA
8-Pin DIP 100 * °C/W
SO-8 Surface-Mount 150 * °C/W
14-Pin DIP 80 * °C/W
SO-14 Surface-Mount 110 * °C/W
*Specifications same as OPA132P, OPA132U.
NOTES: (1) Guaranteed by wafer test. (2) High-speed test at TJ = 25°C.
3OPA132, 2132, 4132
®
PACKAGE INFORMATION
PACKAGE DRAWING
MODEL PACKAGE NUMBER(1)
Single
OPA132PA 8-Pin Plastic DIP 006
OPA132P 8-Pin Plastic DIP 006
OPA132UA SO-8 Surface-Mount 182
OPA132U SO-8 Surface-Mount 182
Dual
OPA2132PA 8-Pin Plastic DIP 006
OPA2132P 8-Pin Plastic DIP 006
OPA2132UA SO-8 Surface-Mount 182
OPA2132U SO-8 Surface-Mount 182
Quad
OPA4132PA 14-Pin Plastic DIP 010
OPA4132UA SO-14 Surface-Mount 235
NOTE: (1) For detailed drawing and dimension table, please see end of data
sheet, or Appendix D of Burr-Brown IC Data Book.
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Burr-Brown
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 degrada-
tion 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.
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, V+ to V–.................................................................... 36V
Input Voltage .................................................... (V–) –0.7V to (V+) +0.7V
Output Short-Circuit(1) .............................................................. Continuous
Operating Temperature ................................................. –40°C to +125°C
Storage Temperature ..................................................... –40°C to +125°C
Junction Temperature...................................................................... 150°C
Lead Temperature (soldering, 10s)................................................. 300°C
NOTE: (1) Short-circuit to ground, one amplifier per package.
MODEL PACKAGE TEMPERATURE RANGE
Single
OPA132PA 8-Pin Plastic DIP –40°C to +85°C
OPA132P 8-Pin Plastic DIP –40 °C to +85°C
OPA132UA SO-8 Surface-Mount –40 °C to +85°C
OPA132U SO-8 Surface-Mount –40 °C to +85°C
Dual
OPA2132PA 8-Pin Plastic DIP –40 °C to +85°C
OPA2132P 8-Pin Plastic DIP –40 °C to +85°C
OPA2132UA SO-8 Surface-Mount –40°C to +85°C
OPA2132U SO-8 Surface-Mount –40 °C to +85°C
Quad
OPA4132PA 14-Pin Plastic DIP –40°C to +85°C
OPA4132UA SO-14 Surface-Mount –40°C to +85°C
ORDERING INFORMATION
4
®
OPA132, 2132, 4132
TYPICAL PERFORMANCE CURVES
At TA = +25°C, VS = ±15V, RL = 2kΩ, unless otherwise noted.
OPEN-LOOP GAIN/PHASE vs FREQUENCY
0.1 1 10 100 1k 10k 100k 1M 10M
160
140
120
100
80
60
40
20
0
–20
0
–45
–90
–135
–180
Voltage Gain (dB)
Phase Shift (°)
Frequency (Hz)
φ
G
INPUT BIAS CURRENT vs TEMPERATURE
Ambient Temperature (°C)
Input Bias Current (pA)
100k
10k
1k
100
10
1
0.1–75 –50 –25 0 25 50 75 100 125
Dual Quad
Single
High Speed Test
Warmed Up
INPUT VOLTAGE AND CURRENT NOISE
SPECTRAL DENSITY vs FREQUENCY
1
1k
100
10
Voltage Noise (nV/√Hz)
Frequency (Hz)
10 100 1k 10k 100k 1M
1
Current Noise (fA/√Hz)
Voltage Noise
Current Noise
POWER SUPPLY AND COMMON-MODE REJECTION
vs FREQUENCY
Frequency (Hz)
PSR, CMR (dB)
120
100
80
60
40
20
010 100 1k 10k 100k 1M
CMR
–PSR
+PSR
CHANNEL SEPARATION vs FREQUENCY
Frequency (Hz)
Channel Separation (dB)
160
140
120
100
80
100 1k 10k 100k
Dual and quad devices.
G = 1, all channels.
Quad measured channel
A to D or B to C—other
combinations yield improved
rejection.
R
L
= ∞
R
L
= 2kΩ
INPUT BIAS CURRENT
vs INPUT COMMON-MODE VOLTAGE
Common-Mode Voltage (V)
Input Bias Current (pA)
10
9
8
7
6
5
4
3
2
1
0–15 –10 –5 0 5 10 15
High Speed Test
5OPA132, 2132, 4132
®
TYPICAL PERFORMANCE CURVES (CONT)
At TA = +25°C, VS = ±15V, RL = 2kΩ, unless otherwise noted.
A
OL
, CMR, PSR vs TEMPERATURE
Ambient Temperature (°C)
A
OL
, CMR, PSR (dB)
130
120
110
100
90–75 –50 –25 0 25 50 75 100 125
Open-Loop
Gain
PSR
CMR
OFFSET VOLTAGE
PRODUCTION DISTRIBUTION
Percent of Amplifiers (%)
Offset Voltage (µV)
–1400
–1200
–1000
–800
–600
–400
–200
0
200
400
600
800
1000
1200
1400
12
10
8
6
4
2
0
Typical production
distribution of packaged
units. Single, dual and
quad units included.
OFFSET VOLTAGE DRIFT
PRODUCTION DISTRIBUTION
Percent of Amplifiers (%)
Offset Voltage Drift (µV/°C)
12
10
8
6
4
2
0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
Typical production distribution
of packaged units. Single, 
dual and quad units included.
MAXIMUM OUTPUT VOLTAGE
vs FREQUENCY
Frequency (Hz)
10k 100k 1M 10M
30
20
10
0
Output Voltage (Vp-p)
V
S
= ±15V
V
S
= ±2.5V
V
S
= ±5V
Maximum output voltage
without slew-rate
induced distortion
TOTAL HARMONIC DISTORTION + NOISE
vs FREQUENCY
Frequency (Hz)
THD+Noise (%)
0.01
0.001
0.0001
0.00001 10 100 1k 10k 100k
2kΩ
600Ω
R
L
G = +10
G = +1
V
O
= 3.5Vrms
QUIESCENT CURRENT AND SHORT-CIRCUIT CURRENT
vs TEMPERATURE
Ambient Temperature (°C)
Quiescent Current Per Amp (mA)
4.3
4.2
4.1
4.0
3.9
3.8
60
50
40
30
20
10
Short-Circuit Current (mA)
–75 –50 –25 0 25 50 75 100 125
±I
SC
±I
Q
6
®
OPA132, 2132, 4132
SMALL-SIGNAL STEP RESPONSE
G =1, C
L
= 100pF
200ns/div
50mV/div
FPO
LARGE-SIGNAL STEP RESPONSE
G = 1, C
L
= 100pF
5V/div
1µs/div
SMALL-SIGNAL OVERSHOOT
vs LOAD CAPACITANCE
60
50
40
30
20
10
0
100pF 1nF 10nF
Load Capacitance
Overshoot (%)
G = +1
G = ±10
G = –1
TYPICAL PERFORMANCE CURVES (CONT)
At TA = +25°C, VS = ±15V, RL = 2kΩ, unless otherwise noted.
SETTLING TIME vs CLOSED-LOOP GAIN
Closed-Loop Gain (V/V)
Settling Time (µs)
100
10
1
0.1 ±1 ±10 ±100 ±1000
0.01%
0.1%
OUTPUT VOLTAGE SWING vs OUTPUT CURRENT
15
14
13
12
11
10
–10
–11
–12
–13
–14
–150 102030405060
Output Current (mA)
Output Voltage Swing (V)
–55°C
–55°C
25°C25°C
85°C
85°C
125°C
125°C
25°C
V
IN
= –15V
V
IN
= 15V
7OPA132, 2132, 4132
®
APPLICATIONS INFORMATION
OPA132 series op amps are unity-gain stable and suitable
for a wide range of general-purpose applications. Power
supply pins should be bypassed with 10nF ceramic capaci-
tors or larger.
OPA132 op amps are free from unexpected output phase-
reversal common with FET op amps. Many FET-input op
amps exhibit phase-reversal of the output when the input
common-mode voltage range is exceeded. This can occur in
voltage-follower circuits, causing serious problems in
control loop applications. OPA132 series op amps are free
from this undesirable behavior. All circuitry is completely
independent in dual and quad versions, assuring normal
behavior when one amplifier in a package is overdriven or
short-circuited.
OPERATING VOLTAGE
OPA132 series op amps operate with power supplies from
±2.5V to ±18V with excellent performance. Although
specifications are production tested with ±15V supplies,
most behavior remains unchanged throughout the full
operating voltage range. Parameters which vary signifi-
cantly with operating voltage are shown in the typical
performance curves.
OFFSET VOLTAGE TRIM
Offset voltage of OPA132 series amplifiers is laser trimmed
and usually requires no user adjustment. The OPA132
(single op amp version) provides offset voltage trim con-
nections on pins 1 and 8. Offset voltage can be adjusted by
connecting a potentiometer as shown in Figure 1. This
adjustment should be used only to null the offset of the op
amp, not to adjust system offset or offset produced by the
signal source. Nulling offset could degrade the offset
voltage drift behavior of the op amp. While it is not
possible to predict the exact change in drift, the effect is
usually small.
FIGURE 1. OPA132 Offset Voltage Trim Circuit.
INPUT BIAS CURRENT
The FET-inputs of the OPA132 series provide very low
input bias current and cause negligible errors in most appli-
cations. For applications where low input bias current is
crucial, junction temperature rise should be minimized. The
input bias current of FET-input op amps increases with
temperature as shown in the typical performance curve
“Input Bias Current vs Temperature.”
The OPA132 series may be operated at reduced power
supply voltage to minimize power dissipation and tempera-
ture rise. Using ±3V supplies reduces power dissipation to
one-fifth that at ±15V.
The dual and quad versions have higher total power dissipa-
tion than the single, leading to higher junction temperature.
Thus, a warmed-up quad will have higher input bias current
than a warmed-up single. Furthermore, an SOIC will gener-
ally have higher junction temperature than a DIP at the same
ambient temperature because of a larger
θ
JA. Refer to the
specifications table.
Circuit board layout can also help minimize junction tem-
perature rise. Temperature rise can be minimized by solder-
ing the devices to the circuit board rather than using a socket.
Wide copper traces will also help dissipate the heat by acting
as an additional heat sink.
Input stage cascode circuitry assures that the input bias
current remains virtually unchanged throughout the full
input common-mode range of the OPA132 series. See the
typical performance curve “Input Bias Current vs Common-
Mode Voltage.”
V+
V–
100kΩ
OPA132 single op amp only. 
Use offset adjust pins only to null
offset voltage of op amp—see text.
Trim Range: ±4mV typ
OPA132 6
7
8
4
3
21
10nF
10nF