Dual, Low Power, Single-Supply
DIFFERENCE AMPLIFIER
1998 Burr-Brown Corporation
PDS-1488A
Printed in U.S.A. December, 1998
FEATURES
q
DESIGNED FOR LOW COST
q
LOW QUIESCENT CURRENT:
160
A per Amplifier
q
WIDE POWER SUPPLY RANGE:
Single Supply: 2.7V to 36V
Dual Supplies:
1.35V to
18V
q
LOW GAIN ERROR:
0.05% max
q
LOW NONLINEARITY: 0.001% max
q
HIGH CMRR: 90dB
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HIGHLY VERSATILE CIRCUIT
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EASY TO USE
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SO-14 PACKAGE
INA2132
DESCRIPTION
The INA2132 is a dual low power, unity-gain differ-
ence amplifier offering excellent value at very low
cost. Each channel consists of a precision op amp with
a laser-trimmed precision resistor network, providing
accurate gain and high common-mode rejection. Ex-
cellent TCR tracking of the resistors maintains gain
accuracy and common-mode rejection over tempera-
ture. The internal op amp's common-mode range
extends to the negative supply--ideal for single-sup-
ply applications.
The difference amplifier is the foundation of many
commonly used circuits. The INA2132 provides this
circuit function without using an expensive precision
resistor network. The INA2132 is available in the
SO-14 surface-mount package and is specified for
operation over the extended industrial temperature
range, 40
C to +85
C.
A single version of this product with similar specifi-
cations is also available. See the INA132 data sheet
for details.
APPLICATIONS
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DIFFERENTIAL INPUT AMPLIFIER
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INSTRUMENTATION AMPLIFIER
BUILDING BLOCK
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UNITY-GAIN INVERTING AMPLIFIER
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G = 1/2 AMPLIFIER
q
G = 2 AMPLIFIER
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SUMMING AMPLIFIER
q
DIFFERENTIAL CURRENT RECEIVER
q
VOLTAGE-CONTROLLED CURRENT SOURCE
q
BATTERY-POWERED SYSTEMS
q
GROUND LOOP ELIMINATOR
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 Internet: http://www.burr-brown.com/ Cable: BBRCORP Telex: 066-6491 FAX: (520) 889-1510 Immediate Product Info: (800) 548-6132
Sense A
INA2132
Out A
V+
Ref A
In A
+In A
12
13
14
2
11
V
4
3
40k
40k
40k
40k
40k
40k
40k
40k
B
A
Sense B
Out B
Ref B
In B
+In B
10
9
8
6
5
INA2132
2
INA2132
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
OFFSET VOLTAGE
(1)
RTO
Initial
V
OS
75
250
T
500
V
vs Temperature
dV
OS
/dT
1
5
T
10
V/
C
vs Power Supply
PSRR
V
S
=
1.35V to
18V
5
30
T
T
V/V
vs Time
0.3
T
V/mo
Channel Separation
(2)
dc
0.04
V/V
INPUT IMPEDANCE
(3)
Differential
80
T
k
Common-Mode
40
T
k
INPUT VOLTAGE RANGE
Common-Mode Voltage Range
(4)
V
O
= 0V
2 (V)
2 (V+) 2
T
T
V
Common-Mode Rejection Ratio CMRR
V
CM
= 30V to 28V, R
S
= 0
80
90
74
T
dB
OUTPUT VOLTAGE NOISE
(5)
RTO
f = 0.1Hz to 10Hz
1.6
T
Vp-p
f = 1kHz
65
T
nV/
Hz
GAIN
Initial
1
T
V/V
Error
V
O
= 14V to 13.5V
0.01
0.05
T
0.1
%
vs Temperature
1
10
T
T
ppm/
C
Nonlinearity
V
O
= 14V to 13.5V
0.0001
0.001
T
0.002
% of FS
OUTPUT
Voltage, Positive
R
L
= 100k
to Ground
(V+) 1
(V+) 0.8
T
T
V
Negative
R
L
= 100k
to Ground
(V) +0.5 (V) +0.15
T
T
V
Positive
R
L
= 10k
to Ground
(V+) 1.5
(V+) 0.8
T
T
V
Negative
R
L
= 10k
to Ground
(V) +1
(V) +0.25
T
T
V
Current Limit, per Amplifier
Continuous to Common
12
T
mA
Capacitive Load (stable operation)
10
T
nF
FREQUENCY RESPONSE
Small-Signal Bandwidth
3dB
300
T
kHz
Slew Rate
SR
0.1
T
V/
s
Settling Time: 0.1%
V
O
= 10V Step
85
T
s
0.01%
V
O
= 10V Step
88
T
s
Overload Recovery Time
50% Overdrive
7
T
s
POWER SUPPLY
Rated Voltage
V
S
15
T
V
Voltage Range
1.35
18
T
T
V
Quiescent Current (per amplifier)
I
Q
I
O
= 0mA
160
185
T
T
A
TEMPERATURE RANGE
Specification
40
+85
T
T
C
Operation
55
+125
T
T
C
Storage
55
+125
T
T
C
Thermal Resistance
JA
100
T
C/W
T
Specifications the same as INA2132U.
NOTES: (1) Includes effects of amplifier's input bias and offset currents. (2) Measured output offset change of one channel for a full-scale swing (V
O
= 14V
to 13.5V) on the opposite channel. (3) 40k
resistors are ratio matched but have
20% absolute value. (4) 2 (V) V
REF
< V
CM
< 2 ((V+) 1) V
REF
. For more detail,
see Applications Information section. (5) Includes effects of amplifier's input current noise and thermal noise contribution of resistor network.
SPECIFICATIONS: V
S
=
15V
At T
A
= +25
C, R
L
= 10k
connected to ground, and reference pins connected to ground unless otherwise noted.
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.
INA2132U
INA2132UA
3
INA2132
SPECIFICATIONS: V
S
= +5V Single Supply
At T
A
= +25
C, R
L
= 10k
connected to V
S
/2, and reference pin connected to V
S
/2, unless otherwise noted.
INA2132U
INA2132UA
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
OFFSET VOLTAGE
(1)
RTO
Initial
V
OS
150
500
T
750
V
vs Temperature
dV
OS
/dT
2
T
V/
C
INPUT VOLTAGE RANGE
Common-Mode Voltage Range
(2)
2.5
+5.5
T
T
V
Common-Mode Rejection
CMRR
V
CM
= 2.5V to +5.5V, R
S
= 0
80
90
74
T
dB
OUTPUT
Voltage, Positive
R
L
= 100k
to Ground
(V+) 1
(V+) 0.75
T
T
V
Negative
R
L
= 100k
to Ground
+0.25
+0.06
T
T
V
Positive
R
L
= 10k
to Ground
(V+) 1
(V+) 0.8
T
T
V
Negative
R
L
= 10k
to Ground
+0.25
+0.12
T
T
V
POWER SUPPLY
Rated Voltage
V
S
+5
T
V
Voltage Range
+2.7
+36
T
T
V
Quiescent Current
I
Q
I
O
= 0mA
155
185
T
T
A
T
Specifications the same as INA2132U.
NOTE: (1) Includes effects of amplifier's input bias and offset currents. (2) 2 (V) V
REF
< V
CM
< 2 ((V+) 1) V
REF
. For more detail, see Applications Information
section.
PIN CONFIGURATION
Top View
SO-14
Supply Voltage, V+ to V .................................................................... 36V
Input Voltage Range ..........................................................................
80V
Output Short-Circuit (to ground) .............................................. 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
ABSOLUTE MAXIMUM RATINGS
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with ap-
propriate 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.
NC
In A
+In A
V
+In B
In B
NC
Ref A
Out A
Sense A
V+
Sense B
Out B
Ref B
NC = No Connection
1
2
3
4
5
6
7
14
13
12
11
10
9
8
A
B
PACKAGE
SPECIFIED
DRAWING
TEMPERATURE
PACKAGE
ORDERING
TRANSPORT
PRODUCT
PACKAGE
NUMBER
(1)
RANGE
MARKING
NUMBER
(2)
MEDIA
INA2132U
SO-14 Surface-Mount
235
40
C to +85
C
INA2132U
INA2132U
Rails
"
"
"
"
"
INA2132U/2K5
Tape and Reel
INA2132UA
SO-14 Surface-Mount
235
40
C to +85
C
INA2132UA
INA2132UA
Rails
"
"
"
"
"
INA2132UA/2K5
Tape and Reel
NOTES: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-Brown IC Data Book. (2) Models with a slash (/) are
available only in Tape and Reel in the quantities indicated (e.g., /2K5 indicates 2500 devices per reel). Ordering 2500 pieces of "INA2132U/2K5" will get a single
2500-piece Tape and Reel. For detailed Tape and Reel mechanical information, refer to Appendix B of Burr-Brown IC Data Book.
PACKAGE/ORDERING INFORMATION
4
INA2132
TYPICAL PERFORMANCE CURVES
At T
A
= +25
C and V
S
=
15V, unless otherwise noted.
GAIN vs FREQUENCY
Frequency (Hz)
Closed-Loop Gain (dB)
10k
100k
1M
20
0
20
40
60
V
S
=
15V or +5V
C
L
= 100pF
R
L
= 10k
C
L
= 1000pF
R
L
=
COMMON-MODE REJECTION vs FREQUENCY
Frequency (Hz)
Common-Mode Rejection (dB)
10
100
1k
10k
100k
1M
100
90
80
70
60
50
40
30
V
S
=
15V
V
S
= +5V
CHANNEL SEPARATION vs FREQUENCY
Frequency (Hz)
Channel Separation (dB)
0.1
1
10
1k
100
1M
100k
10k
150
140
130
120
110
100
90
80
70
60
50
OUTPUT VOLTAGE SWING vs OUTPUT CURRENT
V+
(V+) 0.5
(V+) 1
(V+) 1.5
(V+) 2
(V+) 2.5
(V) +2.5
(V) +2
(V) +1.5
(V) +1
(V) +0.5
V
0
2
4
6
8
10
Output Current (mA)
Output Voltage Swing (V)
125
C
125
C
85
C
55
C
85
C
85
C
25
C
40
C
40
C
25
C
55
C
QUIESCENT and SHORT-CIRCUIT CURRENT
vs TEMPERATURE
Temperature (
C)
Quiescent Current (
A)
Short-Circuit Current |mA|
75
50
25
0
25
50
75
100
125
210
200
190
180
170
160
150
13
12
11
10
9
8
7
I
SC
I
Q
POWER SUPPLY REJECTION vs FREQUENCY
Frequency (Hz)
Power Supply Rejection (dB)
10
100
1k
10k
100k
1M
120
100
80
60
40
20
0
V
S
=
15V
+PSRR
PSRR
V
S
= +5V
5
INA2132
TYPICAL PERFORMANCE CURVES
(CONT)
At T
A
= +25
C and V
S
=
15V, unless otherwise noted.
50mV/div
SMALL-SIGNAL STEP RESPONSE
C
L
= 200pF
50mV/div
10
s/div
SMALL-SIGNAL STEP RESPONSE
C
L
= 1000pF
5V/div
LARGE-SIGNAL STEP RESPONSE
100
s/div
10
s/div
SETTLING TIME vs LOAD CAPACITANCE
Load Capacitance
Settling Time (
s)
100pF
1000pF
10,000pF
100
96
92
88
84
80
0.1%
0.01%
10V Step
INPUT COMMON-MODE VOLTAGE RANGE
vs OUTPUT VOLTAGE
Output Voltage (V)
Common-Mode Voltage (V)
16
12
8
4
0
4
8
16
12
40
30
20
10
0
10
20
30
40
V
REF
= 0V
G = 1
V
S
=
5V
V
S
=
15V
V
S
= +5V
SLEW RATE vs TEMPERATURE
Temperature (
C)
Slew Rate (V/
s)
75
50
25
0
25
50
75
100
125
0.18
0.16
0.14
0.12
0.10
0.08
0.06
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