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INA126UA

INA126UA Instrumentation Amplifier, 0.4V/µs Slew Rate

MPNINA126UA
Active

Texas Instruments INA126UA, single instrumentation amplifier, 0.4V/µs slew rate, 200 kHz -3dB bandwidth, 175 µA supply current, 8-SOIC package, surface mount.

$3.9900Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

INA126UA specifications
ParameterValue
MountingSurface Mount
Amplifier typeInstrumentation
Voltage - input offset150 µV
Voltage - supply span2.7 V
Current - supply175µA
Current - input bias10 nA
Current - output (Channel)10 mA
Operating temperature-40°C~85°C
-3db bandwidth200 kHz
PackageTube
Slew rate0.4V/µs
Case8-SOIC (0.154\", 3.90mm Width)
Number of circuits1

Product details

What this instrumentation amp does on the board

It is built for precision differential signal conditioning — think bridge sensors, thermocouple interfaces, or medical front-ends where you need to extract a small signal riding on a common-mode voltage. Key numbers for the bench: 0.4 V/µs slew rate and 200 kHz -3 dB bandwidth. That is enough for low-frequency sensor outputs — strain gauges, RTDs, ECG leads — but it will roll off a 10 kHz square wave noticeably. The 175 µA supply current makes it a candidate for battery-powered or loop-powered designs. Supply span runs from 2.7 V up to 36 V, single or dual rail. Input offset voltage is 150 µV typical, input bias current 10 nA. Output can source or sink 10 mA per channel.

You can swap it on site with a basic hot-air station or even a fine-tipped iron if the board has enough pad access.

Frequently asked questions

INA126UA vs INA128 — what is the difference?

The INA128 is a higher-performance sibling with a 1.2 MHz bandwidth and 4 V/µs slew rate, compared to the INA126UA's 200 kHz and 0.4 V/µs. The INA126UA draws 175 µA versus the INA128's 700 µA, making it the lower-power choice for battery-operated sensor interfaces. Both are single instrumentation amps in 8-SOIC, but the INA128 targets faster signals.