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INA128 Low Power Instrumentation Amplifier IC DIP-8 Package

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The INA128 is low-power, general purpose instrumentation amplifiers offering excellent accuracy. The versatile 3-op amp design and small size make these amplifiers ideal for a wide range of applications. Current-feedback input circuitry provides wide bandwidth even at high gain (200 kHz at G = 100).

A single external resistor sets any gain from 1 to 10,000. The INA128 provides an industry-standard gain equation. The INA128 is available in 8-pin plastic DIP and SO-8 surface-mount packages, specified for the –40°C to +85°C temperature range. The INA128 is also available in a dual configuration, the INA2128.


• A newer version of this device is now available: INA828

• Low offset voltage: 50 μV maximum

• Low drift: 0.5 μV/°C maximum

• Low Input Bias Current: 5 nA maximum

• High CMR: 120 dB minimum

• Inputs protected to ±40 V

• Wide supply range: ±2.25 V to ±18 V

• Low quiescent current: 700 μA

• Packages: 8-pin plastic DIP, SO-8


Parameter Specification
Number of channels (#) 1
Vs (Max) (V) 36
Vs (Min) (V) 4.5
Input offset (+/-) (Max) (uV) 50
Gain (Min) (V/V) 1
Gain (Max) (V/V) 10000
Noise at 1 kHz (Typ) (nV/rt (Hz)) 8
CMRR (Min) (dB) 120
Input offset drift (+/-) (Max) (uV/C) 0.5
Input bias current (+/-) (Max) (nA) 5
Iq (Typ) (mA) 0.7
Bandwidth at min gain (Typ) (MHz) 1.3
Gain error (+/-) (Max) (%) 2
Operating temperature range (C) -40 to 85
Noise at 0.1 Hz-10 Hz (Typ) (uVpp) 0.2
Gain non-linearity (+/-) (Max) (%) 0.012


* product image for illustration purposes only. actual product may vary.


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