The INA114 is a low cost, general purpose instrumen-
tation amplifier offering excellent accuracy. Its versa-
tile 3-op amp design and small size make it ideal for a
wide range of applications.
A single external resistor sets any gain from 1 to 10,000.
Internal input protection can withstand up to
±40V
without damage.
The INA114 is laser trimmed for very low offset voltage
(50µV), drift (0.25µV/°C) and high common-mode
rejection (115dB at G = 1000). It operates with power
supplies as low as
±2.25V,
allowing use in battery
operated and single 5V supply systems. Quiescent cur-
rent is 3mA maximum.
The INA114 is available in 8-pin plastic and SOL-16
surface-mount packages. Both are specified for the
–40°C to +85°C temperature range.
APPLICATIONS
q
BRIDGE AMPLIFIER
q
THERMOCOUPLE AMPLIFIER
q
RTD SENSOR AMPLIFIER
q
MEDICAL INSTRUMENTATION
q
DATA ACQUISITION
V+
7 (13)
–
V
IN
2
(4)
1
(2)
R
G
8
(15)
+
V
IN
3
(5)
Over-Voltage
Protection
A
2
25kΩ
25kΩ
25kΩ
5
(10)
Ref
25kΩ
A
3
6
(11)
Over-Voltage
Protection
INA114
Feedback
A
1
25kΩ
25kΩ
(12)
DIP Connected
Internally
V
O
G=1+
50kΩ
R
G
4 (7)
DIP
V–
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
NOTE: (1) Temperature coefficient of the “50kΩ” term in the gain equation.
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.
®
INA114
2
PIN CONFIGURATIONS
P Package
Top View
R
G
V
–IN
V
+IN
V–
1
2
3
4
8
7
6
5
R
G
V+
V
O
Ref
8-Pin DIP
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.
PACKAGE/ORDERING INFORMATION
PACKAGE
DRAWING
NUMBER
(1)
006
006
211
211
TEMPERATURE
RANGE
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
U Package
SOL-16 Surface-Mount
Top View
16 NC
15 R
G
14 NC
13 V+
12 Feedback
11 V
O
10 Ref
9
NC
NC
R
G
NC
V
–IN
V
+IN
NC
V–
NC
1
2
3
4
5
6
7
8
PRODUCT
INA114AP
INA114BP
INA114AU
INA114BU
PACKAGE
8-Pin Plastic DIP
8-Pin Plastic DIP
SOL-16 Surface-Mount
SOL-16 Surface-Mount
NOTE: (1) For detailed drawing and dimension table, please see end of data
sheet, or Appendix C of Burr-Brown IC Data Book.
ABSOLUTE MAXIMUM RATINGS
(1)
Supply Voltage ..................................................................................
±18V
Input Voltage Range ..........................................................................
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