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INA118U

Precision, Low Power INSTRUMENTATION AMPLIFIER power ic chip

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
 
APPLICATIONS
● BRIDGE AMPLIFIER
● THERMOCOUPLE AMPLIFIER
● RTD SENSOR AMPLIFIER
● MEDICAL INSTRUMENTATION
● DATA ACQUISITION
 
DESCRIPTION
The INA118 is a low power, general purpose instrumentation 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 rejection (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.