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Texas Instruments INA199A3DCKT — Analog & Data Acquisition

INA199A3DCKT Current Sense Amplifier, ±1.5% Accuracy

MPNINA199A3DCKT
End of Life

Texas Instruments INA199A3DCKT, Current Sense Amplifier, ±1.5% Accuracy, High/Low-Side, -0.3V to 26V Input, -40°C to 125°C, SC-70-6 Package, Tape & Reel.

$1.35Ref. price · indicative, final on quote
Texas Instruments INA199A3DCKT datasheet (PDF)
Packaging6-TSSOP, SC-88, SOT-363
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

INA199A3DCKT specifications
ParameterValue
MountingSurface Mount
Voltage - input-0.3V ~ 26V
Operating temperature-40°C ~ 125°C
PackageTape & Reel (TR); Cut Tape (CT)
Accuracy±1.5%
FunctionCurrent Sense
Case6-TSSOP, SC-88, SOT-363
Sensing methodHigh/Low-Side

Product details

The Texas Instruments INA199A3DCKT is a current-sense amplifier that monitors current by measuring the voltage drop across a shunt resistor. It handles common-mode voltages from -0.3 V up to 26 V.

Package and hand-solderability

The INA199A3DCKT comes in an SC-70-6 package — that's the six-lead variant of the SOT-363 footprint.

It's happy in a motor-drive enclosure, an outdoor telecom power supply, or an engine-bay ECU. The wide temperature range also means the accuracy spec holds over the full span — no cold-start drift surprises.

The INA199A3DCKT is an active, current-production part with ROHS3 compliance. No last-time-buy or obsolescence risk on the horizon.

Frequently asked questions

Can INA199A3DCKT be used for high-side current sensing?

Yes, the INA199A3DCKT supports both high-side and low-side current sensing, as its input common-mode range extends from -0.3 V to 26 V.

What are the equivalent or replacement parts for INA199A3DCKT?

The INA199B2QDCKRQ1 is an automotive-grade (AEC-Q100) variant with the same ±1.5% accuracy and high/low-side sensing, but it has a narrower input voltage range starting at 0.1 V. For general-purpose use, the INA199A3DCKT is the standard version.