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Texas Instruments INA128UA/2K5G4 — Analog & Data Acquisition

INA128UA/2K5G4 Instrumentation Amplifier, 4V/µs Slew Rate

MPNINA128UA/2K5G4
Obsolete

Texas Instruments INA128UA/2K5G4 precision instrumentation amplifier, single-channel, 4V/µs slew rate, 1.3 MHz bandwidth, 25 µV offset, 2 nA bias, 8-SOIC package, -40°C to 125°C, Tape & Reel.

$8.4900Ref. price · indicative, final on quote
Texas Instruments INA128UA/2K5G4 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

INA128UA/2K5G4 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
PackageTape & Reel (TR)
Slew rate4V/µs
Case8-SOIC (0.154\", 3.90mm Width)
Number of circuits1

Product details

Obsolete — sourcing strategy for the INA128UA/2K5G4

Precision instrumentation amplifier — key parametrics for signal-chain fit

The INA128UA/2K5G4 is a single-channel instrumentation amplifier from Texas Instruments, designed for precision differential signal acquisition where low offset and low drift matter more than raw speed. Slew rate is 4 V/µs with a -3 dB bandwidth of 1.3 MHz. For a precision instrumentation amp, this is enough bandwidth to handle 10 kHz to 50 kHz excitation frequencies in strain-gage or load-cell applications without significant gain error at the carrier frequency. Supply current is 700 µA quiescent, and the output can source or sink 15 mA per channel.

Frequently asked questions

What are the specifications of the INA128UA/2K5G4?

It is a single-channel instrumentation amplifier with a 4 V/µs slew rate, 1.3 MHz bandwidth, 25 µV input offset voltage, 2 nA input bias current, 700 µA supply current, 15 mA output drive, and a supply span of 4.5 V to 36 V. Package is 8-SOIC.