®
INA
114
INA114
INA
114
Precision
INSTRUMENTATION AMPLIFIER
FEATURES
q
LOW OFFSET VOLTAGE: 50
µ
V max
q
LOW DRIFT: 0.25
µ
V/
°
C max
q
LOW INPUT BIAS CURRENT: 2nA max
q
HIGH COMMON-MODE REJECTION:
115dB min
q
INPUT OVER-VOLTAGE PROTECTION:
±
40V
q
WIDE SUPPLY RANGE:
±
2.25 to
±
18V
q
LOW QUIESCENT CURRENT: 3mA max
q
8-PIN PLASTIC AND SOL-16
DESCRIPTION
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
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BRIDGE AMPLIFIER
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THERMOCOUPLE AMPLIFIER
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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
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
®
(SOIC)
©
1992 Burr-Brown Corporation
PDS-1142D
1
Printed in U.S.A. March, 1998
INA114
SBOS014
BURR-BROWN [ BURR-BROWN CORPORATION ]
