®
INA118
INA118
INA118
Precision, Low Power
INSTRUMENTATION AMPLIFIER
DESCRIPTION
FEATURES
The INA118 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 (70kHz at G = 100).
● LOW OFFSET VOLTAGE: 50µV max
● LOW DRIFT: 0.5µV/°C max
● LOW INPUT BIAS CURRENT: 5nA max
● HIGH CMR: 110dB min
● INPUTS PROTECTED TO ±40V
● WIDE SUPPLY RANGE: ±1.35 to ±18V
● LOW QUIESCENT CURRENT: 350µA
● 8-PIN PLASTIC DIP, SO-8
Asingleexternalresistorsetsanygainfrom1to10,000.
Internal input protection can withstand up to ±40V
without damage.
TheINA118islasertrimmedforverylowoffsetvoltage
(50µV), drift (0.5µV/°C) and high common-mode re-
jection (110dB at G = 1000). It operates with power
supplies as low as±1.35V, and quiescent current is only
350µA—ideal for battery operated systems.
APPLICATIONS
● BRIDGE AMPLIFIER
● THERMOCOUPLE AMPLIFIER
● RTD SENSOR AMPLIFIER
● MEDICAL INSTRUMENTATION
● DATA ACQUISITION
The INA118 is available in 8-pin plastic DIP,
and SO-8 surface-mount packages, specified for
the –40°C to +85°C temperature range.
V+
7
–
VIN
INA118
2
1
Over-Voltage
Protection
A1
50kΩ
RG
G = 1 +
60kΩ
60kΩ
25kΩ
25kΩ
6
5
A3
VO
RG
8
3
A2
Ref
+
VIN
Over-Voltage
Protection
60kΩ
60kΩ
4
V–
International Airport Industrial Park
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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
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Immediate Product Info: (800) 548-6132
®
©1994 Burr-Brown Corporation
Printed in U.S.A. April, 1998
PDS-11199D
INA118
SBOS027