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® INA2141
INA2141
INA2141
Dual, Low Power, G = 10, 100
INSTRUMENTATION AMPLIFIER
FEATURES
q LOW OFFSET VOLTAGE: 50µV max
q LOW DRIFT: 0.5µV/°C max
q EXCELLENT GAIN ACCURACY:
±0.05% max at G = 10
q LOW INPUT BIAS CURRENT: 5nA max
q HIGH CMR: 117dB min (G = 100)
q INPUTS PROTECTED TO ±40V
q WIDE SUPPLY RANGE: ±2.25V to ±18V
q LOW QUIESCENT CURRENT: 750µA/IA
q 16-PIN PLASTIC DIP, SOL-16
APPLICATIONS
q SENSOR AMPLIFIER
THERMOCOUPLE, RTD, BRIDGE
q MEDICAL INSTRUMENTATION
q MULTIPLE CHANNEL SYSTEMS
DESCRIPTION
The INA2141 is a low power, dual instrumentation
amplifier offering excellent accuracy. Its versatile
3-op amp design and small size make it ideal for a
wide range of applications. Current-feedback input
circuitry provides wide bandwidth even at high gain
(200kHz at G = 100).
Simple pin connections set an accurate gain of 10 or
100V/V without external resistors. Internal input pro-
tection can withstand up to ±40V without damage.
The INA2141 is laser trimmed for very low offset
voltage (50µV), drift (0.5µV/°C) and high common-
mode rejection (117dB at G = 100). It operates with
power supplies as low as ±2.25V, and quiescent cur-
rent is only 750µA per amplifier—ideal for battery
operated systems.
Packages are 16-pin plastic DIP, and SOL-16
surface-mount, specified for the –40°C to +85°C
temperature range.
VIN–A
G = 10
or
100
VIN+A
1 Over-Voltage
Protection
3 252
5050
4 252
2 Over-Voltage
Protection
V+
9
A1A
25k
INA2141
40k
40k
A3A
25k
A2A
40k
40k
7
6 VOA
5 Ref
VIN–B 16
G = 10
or
100
14
13
Over-Voltage
Protection
252
5050
252
+
VINB
15
Over-Voltage
Protection
A1B
25k
40k
25k
A2B
40k
8
V–
40k
A3B
40k
10
11 VOB
12 Ref
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/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
©1995 Burr-Brown Corporation
PDS-1244C
Printed in U.S.A. January, 1996

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SPECIFICATIONS
At TA = +25°C, VS = ±15V, and RL = 10k, unless otherwise noted.
INA2141P, U
PARAMETER
CONDITIONS
MIN TYP
INPUT
Offset Voltage, RTI
G = 100
G = 10
vs Temperature
G = 100
G = 10(2)
vs Power Supply
VS = ±2.25 to ±18V, G = 100
G = 10
Long-Term Stability
G = 100
G = 10
Impedance, Differential
Common-Mode
Common-Mode Voltage Range(1)
VO = 0V
Safe Input Voltage
Common-Mode Rejection
VCM = ±13V, RS = 1k
G = 100
G = 10
(V+) – 2
(V–) + 2
117
97
±20
±50
±0.2
±0.5
±1
±2
0.2
0.5
1010 || 2
1010 || 9
(V+) – 1.4
(V–) + 1.7
125
106
BIAS CURRENT
vs Temperature
Offset Current
vs Temperature
NOISE VOLTAGE, RTI
f = 10Hz
f = 100Hz
f = 1kHz
fB = 0.1Hz to 10Hz
f = 10Hz
f = 100Hz
f = 1kHz
fB = 0.1Hz to 10Hz
Noise Current
f = 10Hz
f = 1kHz
fB = 0.1Hz to 10Hz
GAIN
Gain Error
Gain vs Temperature(2)
Nonlinearity
OUTPUT
Voltage: Positive
Negative
Load Capacitance Stability
Short-Circuit Current
G = 100, RS = 0
G = 10, RS = 0
VO = ±13.6V, G = 100
G = 10
G = 10, 100
G = 100
G = 10
RL = 10k
RL = 10k
±2
±30
±1
±30
10
8
8
0.2
22
13
12
0.6
0.9
0.3
30
±0.03
±0.01
±2
±0.0005
±0.0003
(V+) – 1.4
(V–) + 1.4
(V+) – 0.9
(V–) + 0.9
1000
+6/–15
FREQUENCY RESPONSE
Bandwidth, –3dB
Slew Rate
Settling Time, 0.01%
Overload Recovery
G = 100
G = 10
VO = ±10V, G = 10
VO = ±5V, G = 100
G = 10
50% Overdrive
200
1
4
9
7
4
POWER SUPPLY
Voltage Range
Current, Total
TEMPERATURE RANGE
Specification
Operating
θJA
VIN = 0V
±2.25
–40
–40
±15
±1.5
80
MAX
±50
±100
±0.5
±2
±2
±10
±40
±5
±5
±0.075
±0.05
±10
±0.002
±0.001
±18
±1.6
85
125
INA2141PA, UA
MIN TYP MAX
T ±125
T ±250
T ±1.5
T ±5
T ±5
T ±20
T
T
T
T
TT
TT
T
110 120
93 100
T
T
T
T
±10
±10
T
T
T
T
T
T
T
T
T
T
T
T ±0.15
T ±0.15
TT
T ±0.004
T ±0.002
TT
TT
T
T
T
T
T
T
T
T
TT
T
T
T
T
T
T
T
T
T Specification same as INA2141P, U.
NOTE: (1) Input common-mode range varies with output voltage—see typical curves. (2) Guaranteed by wafer test.
UNITS
µV
µV
µV/°C
µV/°C
µV/V
µV/V
µV/mo
µV/mo
|| pF
|| pF
V
V
V
dB
dB
nA
pA/°C
nA
pA/°C
nV/Hz
nV/Hz
nV/Hz
µVp-p
nV/Hz
nV/Hz
nV/Hz
µVp-p
pA/Hz
pA/Hz
pAp-p
%
%
ppm/°C
% of FSR
% of FSR
V
V
pF
mA
kHz
MHz
V/µs
µs
µs
µs
V
mA
°C
°C
°C/W
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.
®
INA2141
2

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PIN CONFIGURATION
Top View
VI–NA 1
VI+NA 2
JA 3
JA 4
RefA 5
VOA 6
SenseA 7
V– 8
16 VI–NB
15 VI+NB
14 JB
13 JB
12 RefB
11 VOB
10 SenseB
9 V+
DIP
SOL-16
ABSOLUTE MAXIMUM RATINGS
Supply Voltage .................................................................................. ±18V
Analog Input Voltage Range ............................................................. ±40V
Output Short-Circuit (to ground) .............................................. 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
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 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.
ORDERING INFORMATION
PRODUCT
INA2141PA
INA2141P
INA2141UA
INA2141U
PACKAGE
16-Pin Plastic DIP
16-Pin Plastic DIP
SOL-16 Surface-Mount
SOL-16 Surface-Mount
PACKAGE
DRAWING
NUMBER(1)
180
180
211
211
TEMPERATURE
RANGE
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
NOTE: (1) For detailed drawing and dimension table, please see end of data
sheet, or Appendix C of Burr-Brown IC Data Book.
®
3 INA2141

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TYPICAL PERFORMANCE CURVES
At TA = +25°C, and VS = ±15V, unless otherwise noted.
GAIN vs FREQUENCY
60
50
40
G = 100V/V
30
20
G = 10V/V
10
0
–10
–20
1k
10k 100k 1M
Frequency (Hz)
10M
COMMON-MODE REJECTION vs FREQUENCY
140
G = 100V/V
120
G = 10V/V
100
80
60
40
20
0
10
100
1k
10k 100k
1M
Frequency (Hz)
140
120
100
80
60
40
20
0
10
POSITIVE POWER SUPPLY REJECTION
vs FREQUENCY
G = 10V/V
G = 100V/V
100 1k 10k 100k 1M
Frequency (Hz)
140
120
100
80
60
40
20
0
10
NEGATIVE POWER SUPPLY REJECTION
vs FREQUENCY
G = 100V/V
G = 10V/V
100
1k
10k 100k
1M
Frequency (Hz)
15
10
5
0
–5
–10
–15
–15
INPUT COMMON-MODE RANGE
vs OUTPUT VOLTAGE, VS = ±15V
VD/2
VD/2
+
+
+
VCM
+15V
VO
Ref
–15V
–10 –5
0
5
Output Voltage (V)
10
15
5
4
3
2
1
0
–1
–2
–3
–4
–5
–5
INPUT COMMON-MODE RANGE
vs OUTPUT VOLTAGE, VS = ±5, ±2.5V
VS = ±5V
VS = ±2.5V
–4 –3 –2 –1 0 1 2
Output Voltage (V)
3
4
5
®
INA2141
4

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TYPICAL PERFORMANCE CURVES (CONT)
At TA = +25°C, and VS = ±15V, unless otherwise noted.
CROSSTALK vs FREQUENCY
140
G = 100V/V
120
G = 10V/V
100
80
60
40
20
0
10 100 1k 10k 100k
Frequency (Hz)
1M
INPUT- REFERRED NOISE vs FREQUENCY
1k
100
100
10
1
1
G = 10V/V
G = 100
Current Noise
10 100 1k
Frequency (Hz)
10
1
0.1
10k
QUIESCENT CURRENT and SLEW RATE
vs TEMPERATURE
1.8 6
1.7 5
1.6
Slew Rate
4
1.5 3
IQ
1.4 2
1.3
–75 –50 –25
0 25 50
Temperature (°C)
1
75 100 125
INPUT OVER-VOLTAGE V/I CHARACTERISTICS
5
4
3 Flat region represents
2 normal linear operation.
1
0
G = 100V/V
G = 10V/V
–1
G = 10V/V
–2
–3 G = 100V/V
–4
–5
–50 –40 –30 –20 –10
+15V
1/2
INA2141
VIN
IIN –15V
0 10 20 30 40
50
Input Voltage (V)
10
8
6
4
2
0
–2
–4
–6
–8
–10
0
OFFSET VOLTAGE WARM-UP
G = 100V/V
10 20 30 40 50
Time (ms)
INPUT BIAS CURRENT vs TEMPERATURE
2
IB
1
IOS
0
Typical IB and IOS
–1 Range ±2nA at 25°C
–2
–75 –50 –25 0 25 50 75 100 125
Temperature (°C)
®
5 INA2141