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INA128UAE4

INA128UAE4 Instrumentation Amplifier, 25 µV Offset

MPNINA128UAE4
End of Life

Texas Instruments INA128UAE4 precision instrumentation amplifier, 1.3 MHz bandwidth, 4 V/µs slew rate, 25 µV input offset, 2 nA bias current, single supply 4.5–36 V, -40 to 125°C, 8-SOIC package.

$7.4700Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

INA128UAE4 specifications
ParameterValue
MountingSurface Mount
Amplifier typeInstrumentation
Voltage - input offset25 µV
Voltage - supply span4.5 V
Current - supply700µA
Current - input bias2 nA
Current - output (Channel)15 mA
Operating temperature-40°C~125°C
-3db bandwidth1.3 MHz
PackageTube
Slew rate4V/µs
Case8-SOIC (0.154\", 3.90mm Width)
Number of circuits1

Product details

Precision bridge and transducer amplifier

It is designed to extract small differential signals from high common-mode noise — the classic role for bridge sensors, thermocouple interfaces, and medical front-ends where the 25 µV input offset voltage sets the noise floor for the measurement chain. A 4 V/µs slew rate and 1.3 MHz -3 dB bandwidth mean this part handles moderate-speed data acquisition without trading off DC precision. The 2 nA input bias current keeps the voltage error across source impedances low — relevant when the sensor bridge impedance runs into the kΩ range.

That covers standard 5 V and ±15 V industrial rails without a secondary regulator.

Frequently asked questions

What is INA128UAE4 used for?

As an instrumentation amplifier, it is used for conditioning small differential signals from bridge sensors, thermocouples, strain gauges, and medical transducers where high common-mode rejection and low offset are required.