INA141
1
INA141
INA141
Precision, Low Power, G = 10, 100
INSTRUMENTATION AMPLIFIER
FEATURES
q
LOW OFFSET VOLTAGE: 50
V max
q
LOW DRIFT: 0.5
V/
C max
q
ACCURATE GAIN:
0.05% at G = 10
q
LOW INPUT BIAS CURRENT: 5nA max
q
HIGH CMR: 117dB min
q
INPUTS PROTECTED TO
40V
q
WIDE SUPPLY RANGE:
2.25 to
18V
q
LOW QUIESCENT CURRENT: 750
A
q
8-PIN PLASTIC DIP, SO-8
DESCRIPTION
The INA141 is a low power, general purpose instru-
mentation 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 INA141 is laser trimmed for very low offset
voltage (50
V), drift (0.5
V/
C) and high common-
mode rejection (117dB at G = 100). It operates with
power supplies as low as
2.25V, and quiescent
current is only 750
A--ideal for battery operated
systems.
The INA141 is available in 8-pin plastic DIP, and
SO-8 surface-mount packages, specified for the 40
C
to +85
C temperature range.
INA141
A
1
A
2
A
3
40k
40k
40k
40k
V
IN
2
1
8
3
6
5
V
IN
V+
V
INA141
Ref
V
O
+
Over-Voltage
Protection
25k
25k
Over-Voltage
Protection
4
7
G = 10
or
G =100
252
5050
252
APPLICATIONS
q
BRIDGE AMPLIFIER
q
THERMOCOUPLE AMPLIFIER
q
RTD SENSOR AMPLIFIER
q
MEDICAL INSTRUMENTATION
q
DATA ACQUISITION
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
PDS-1297B
SBOS052
INA141
2
SPECIFICATIONS
At T
A
= +25
C, V
S
=
15V, and R
L
= 10k
,
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.
INA141P, U
INA141PA, UA
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
INPUT
Offset Voltage, RTI
G = 100
20
50
T
125
V
G = 10
50
100
T
250
V
vs Temperature
G = 100
0.2
0.5
T
1.5
V/
C
G = 10
(2)
0.5
2
T
2.5
V/
C
vs Power Supply
V
S
=
2.25 to
18V, G = 100
0.4
1
T
3
V/V
G = 10
2
10
T
20
V/V
Long-Term Stability
G = 100
0.2
T
V/mo
G = 10
0.5
T
V/mo
Impedance, Differential
10
10
|| 2
T
|| pF
Common-Mode
10
10
|| 9
T
|| pF
Common-Mode Voltage Range
(1)
V
O
= 0V
(V+) 2
(V+) 1.4
T
T
V
(V)
+ 2
(V)
+ 1.7
T
T
V
Safe Input Voltage
40
T
V
Common-Mode Rejection
V
CM
=
13V,
R
S
= 1k
G = 100
117
125
110
120
dB
G = 10
100
106
93
100
dB
BIAS CURRENT
2
5
T
10
nA
vs Temperature
30
T
pA/
C
Offset Current
1
5
T
10
nA
vs Temperature
30
T
pA/
C
NOISE VOLTAGE, RTI
f = 10Hz
G = 100, R
S
= 0
10
T
nV/
Hz
f = 100Hz
8
T
nV/
Hz
f = 1kHz
8
T
nV/
Hz
f
B
= 0.1Hz to 10Hz
0.2
T
Vp-p
f = 10Hz
G = 10, R
S
= 0
22
T
nV/
Hz
f = 100Hz
13
T
nV/
Hz
f = 1kHz
12
T
nV/
Hz
f
B
= 0.1Hz to 10Hz
0.6
T
Vp-p
Noise Current
f = 10Hz
0.9
T
pA/
Hz
f = 1kHz
0.3
T
pA/
Hz
f
B
= 0.1Hz to 10Hz
30
T
pAp-p
GAIN
Gain Error
V
O
=
13.6V, G = 100
0.03
0.075
T
0.15
%
G = 10
0.01
0.05
T
0.15
%
Gain vs Temperature
(2)
G = 10, 100
2
10
T
T
ppm/
C
Nonlinearity
G = 100
0.0005
0.002
T
0.004
% of FSR
G = 10
0.0003
0.001
T
0.002
% of FSR
OUTPUT
Voltage: Positive
R
L
= 10k
(V+) 1.4
(V+) 0.9
T
T
V
Negative
R
L
= 10k
(V) + 1.4
(V) + 0.9
T
T
V
Load Capacitance Stability
1000
T
pF
Short-Circuit Current
+6/15
T
mA
FREQUENCY RESPONSE
Bandwidth, 3dB
G = 100
200
T
kHz
G = 10
1
T
MHz
Slew Rate
V
O
=
10V, G = 10
4
T
V/
s
Settling Time, 0.01%
V
O
=
5V, G = 100
9
T
s
G = 10
7
T
s
Overload Recovery
50% Overdrive
4
T
s
POWER SUPPLY
Voltage Range
2.25
15
18
T
T
T
V
Current, Total
V
IN
= 0V
750
800
T
T
A
TEMPERATURE RANGE
Specification
40
85
T
T
C
Operating
40
125
T
T
C
JA
8-Pin DIP
80
T
C/W
SO-8 SOIC
150
T
C/W
T
Specification same as INA141P, U.
NOTE: (1) Input common-mode range varies with output voltage--see typical curves. (2) Guaranteed by wafer test.
INA141
3
J
V
IN
V
+
IN
V
J
V+
V
O
Ref
1
2
3
4
8
7
6
5
Top View
PIN CONFIGURATION
8-Pin DIP and SO-8
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
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.
ORDERING INFORMATION
PACKAGE
DRAWING
TEMPERATURE
PRODUCT
PACKAGE
NUMBER
(1)
RANGE
INA141PA
8-Pin Plastic DIP
006
40
C to +85
C
INA141P
8-Pin Plastic DIP
006
40
C to +85
C
INA141UA
SO-8 Surface-Mount
182
40
C to +85
C
INA141U
SO-8 Surface-Mount
182
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.
INA141
4
TYPICAL PERFORMANCE CURVES
At T
A
= +25
C and V
S
=
15V, unless otherwise noted.
GAIN vs FREQUENCY
60
50
40
30
20
10
0
10
20
Gain (dB)
Frequency (Hz)
1k
10k
100k
1M
10M
G = 100V/V
G = 10V/V
POSITIVE POWER SUPPLY REJECTION
vs FREQUENCY
Frequency (Hz)
Power Supply Rejection (dB)
140
120
100
80
60
40
20
0
10
100
1k
10k
100k
1M
G = 100V/V
G = 10V/V
INPUT COMMON-MODE RANGE
vs OUTPUT VOLTAGE, V
S
= 5, 2.5V
Output Voltage (V)
Common-Mode Voltage (V)
5
5
4
3
2
1
0
1
2
3
4
5
4
3
2
1
0
1
2
3
4
5
V
S
= 5V
V
S
= 2.5V
COMMON-MODE REJECTION vs FREQUENCY
Frequency (Hz)
Common-Mode Rejection (dB)
10
100
10k
1M
1k
140
120
100
80
60
40
20
0
100k
G = 10V/V
G = 100V/V
NEGATIVE POWER SUPPLY REJECTION
vs FREQUENCY
Frequency (Hz)
Power Supply Rejection (dB)
140
120
100
80
60
40
20
0
10
100
1k
10k
100k
1M
G = 100V/V
G = 10V/V
INPUT COMMON-MODE RANGE
vs OUTPUT VOLTAGE, V
S
= 15V
Output Voltage (V)
Common-Mode Voltage (V)
15
10
0
5
15
5
15
10
5
0
5
10
15
10
V
D/2
+
+
V
CM
V
O
V
D/2
Ref
15V
+15V
+
INA141
5
INPUT OFFSET VOLTAGE WARM-UP
10
8
6
4
2
0
2
4
6
8
10
0
100
200
300
400
500
Time (s)
Input Offset Voltage Change (V)
TYPICAL PERFORMANCE CURVES
(CONT)
At T
A
= +25
C and V
S
=
15V, unless otherwise noted.
OUTPUT VOLTAGE SWING
vs OUTPUT CURRENT
(V+)
(V+)0.4
(V+)0.8
(V+)1.2
(V+)+1.2
(V)+0.8
(V)+0.4
V
0
1
2
3
4
Output Current (mA)
Output Voltage (V)
INPUT- REFERRED NOISE vs FREQUENCY
Frequency (Hz)
Input-Referred Voltage Noise (nV/
Hz)
1
10
1k
100
1k
100
10
1
10k
G = 10V/V
100
10
1
0.1
Input Bias Current Noise (pA/
Hz)
Current Noise
G = 100V/V
INPUT OVER-VOLTAGE V/I CHARACTERISTICS
5
4
3
2
1
0
1
2
3
4
5
Input Current (mA)
Input Voltage (V)
50
40
30
20
10
10
20
30
40
0
50
G = 10V/V
G = 10V/V
G = 100V/V
G = 100V/V
V
IN
I
IN
15V
+15V
INA141
Flat region represents
normal linear operation.
QUIESCENT CURRENT and SLEW RATE
vs TEMPERATURE
Temperature (C)
Quiescent Current (A)
0.9
0.85
0.8
0.75
0.7
0.65
6
5
4
3
2
1
75
50
25
0
25
50
75
100
125
Slew Rate (V/s)
I
Q
Slew Rate
INPUT BIAS CURRENT vs TEMPERATURE
2
1
0
1
2
75
50
25
0
25
50
75
100
125
Temperature (C)
Input Bias Current (nA)
I
OS
I
B
Typical I
B
Range
2nA at 25C
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