Datasheet
1
®
INA118
A
1
A
2
A
3
6
60kΩ60kΩ
60kΩ60kΩ
7
4
3
8
1
2
V
IN
V
IN
R
G
V+
V–
INA118
Ref
V
O
G = 1 +
50kΩ
R
G
–
+
5
Over-Voltage
Protection
25kΩ
25kΩ
Over-Voltage
Protection
FEATURES
● 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
DESCRIPTION
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).
A single external resistor sets any gain from 1 to 10,000.
Internal input protection can withstand up to ±40V
without damage.
The INA118 is laser trimmed for very low offset voltage
(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.
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.
Precision, Low Power
INSTRUMENTATION AMPLIFIER
®
INA118
APPLICATIONS
● BRIDGE AMPLIFIER
● THERMOCOUPLE AMPLIFIER
● RTD SENSOR AMPLIFIER
● MEDICAL INSTRUMENTATION
● 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
INA118
INA118
©1994 Burr-Brown Corporation PDS-1199D Printed in U.S.A. April, 1998
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