INA114
®
INA114
INA114
Precision
INSTRUMENTATION AMPLIFIER
DESCRIPTION
FEATURES
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.
● LOW OFFSET VOLTAGE: 50µV max
● LOW DRIFT: 0.25µV/°C max
● LOW INPUT BIAS CURRENT: 2nA max
● HIGH COMMON-MODE REJECTION:
Asingleexternalresistorsetsanygainfrom1to10,000.
Internal input protection can withstand up to ±40V
without damage.
115dB min
● INPUT OVER-VOLTAGE PROTECTION:
±40V
TheINA114islasertrimmedforverylowoffsetvoltage
(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.
● WIDE SUPPLY RANGE: ±2.25 to ±18V
● LOW QUIESCENT CURRENT: 3mA max
● 8-PIN PLASTIC AND SOL-16
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
● BRIDGE AMPLIFIER
● THERMOCOUPLE AMPLIFIER
● RTD SENSOR AMPLIFIER
● MEDICAL INSTRUMENTATION
● DATA ACQUISITION
V+
(13)
7
–
VIN
INA114
2
Over-Voltage
Protection
Feedback
(12)
(4)
A1
25kΩ
25kΩ
DIP Connected
Internally
1
25kΩ
25kΩ
(2)
6
A3
VO
RG
(11)
8
50kΩ
RG
G = 1 +
(15)
5
A2
Ref
+
VIN
3
Over-Voltage
Protection
(10)
25kΩ
25kΩ
(5)
4
(7)
DIP
(SOIC)
V–
International Airport Industrial Park
•
Mailing Address: PO Box 11400, Tucson, AZ 85734
FAXLine: (800) 548-6133 (US/Canada Only)
• 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
®
©1992 Burr-Brown Corporation
PDS-11142D
Printed in U.S.A. March, 1998
INA114
SBOS014