INA118 Datasheet, PDF (1/11 Pages) Burr-Brown (TI) – Precision, Low Power INSTRUMENTATION AMPLIFIER

®
INA118
INA118
INA118
Precision, Low Power
INSTRUMENTATION AMPLIFIER
FEATURES
q LOW OFFSET VOLTAGE: 50µV max
q LOW DRIFT: 0.5µV/°C max
q LOW INPUT BIAS CURRENT: 5nA max
q HIGH CMR: 110dB min
q INPUTS PROTECTED TO ±40V
q WIDE SUPPLY RANGE: ±1.35 to ±18V
q LOW QUIESCENT CURRENT: 350µA
q 8-PIN PLASTIC DIP, SO-8
APPLICATIONS
q BRIDGE AMPLIFIER
q THERMOCOUPLE AMPLIFIER
q RTD SENSOR AMPLIFIER
q MEDICAL INSTRUMENTATION
q DATA ACQUISITION
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.
–
2 Over-Voltage
V_IN
Protection
1
R_G
8
+
3 Over-Voltage
V_IN
Protection
A₁
25kΩ
25kΩ
A₂
V+
7
INA118
60kΩ
60kΩ
A₃
60kΩ
4
V–
60kΩ
G = 1 + ^50kΩ
R_G
6
V_O
5
Ref
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Internet: http://www.burr-brown.com/ • FAXLine: [phone] (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]
©1994 Burr-Brown Corporation
PDS-₁1199D
®
INA118 ^{Printed in U.S.A. April, 1998}