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Texas Instruments INA190A1IDCKR — Analog & Data Acquisition

INA190A1IDCKR Current Sense Amplifier, Zero-Drift, 45 kHz

MPNINA190A1IDCKR
End of Life

Texas Instruments INA190A1IDCKR, Zero-Drift series, single current sense amplifier, 45 kHz gain bandwidth, rail-to-rail output, 1.7 V to 5.5 V supply, 48 µA quiescent current, SC-70-6 package, -40°C to 125°C.

$2.92Ref. price · indicative, final on quote
Texas Instruments INA190A1IDCKR datasheet (PDF)
Packaging6-TSSOP, SC-88, SOT-363
RoHSROHS3 Compliant
SeriesZero-Drift
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

INA190A1IDCKR specifications
ParameterValue
SeriesZero-Drift
Output typeRail-to-Rail
MountingSurface Mount
Amplifier typeCurrent Sense
Voltage - input offset3 µV
Voltage - supply span5.5 V
Current - supply48µA
Current - input bias500 pA
Operating temperature-40°C ~ 125°C (TA)
Gain bandwidth product45 kHz
PackageTape & Reel (TR); Cut Tape (CT)
Slew rate0.3V/µs
Case6-TSSOP, SC-88, SOT-363
Number of circuits1

Product details

It measures current by amplifying the voltage drop across a shunt resistor, outputting a rail-to-rail signal proportional to the load current. With a gain-bandwidth product of 45 kHz and an input offset voltage of 3 µV, it resolves small differential signals accurately without external trimming. The part operates from 1.7 V to 5.5 V supply and draws 48 µA quiescent current, making it suitable for battery-powered and always-on monitoring in industrial and automotive systems.

Supply range and bias — fit for low-side and high-side shunts

Input bias current is 500 pA.

Listed as current production (active) with ROHS3 compliance.

Package and mounting — SC-70-6 footprint

Surface-mount SC-70-6 (also known as SOT-363).

Frequently asked questions

What is the gain bandwidth product of INA190A1IDCKR?

The gain-bandwidth product is 45 kHz, suitable for DC and low-frequency current sensing loops.

How does INA190A1IDCKR compare to INA190A2IDCKR?

Both are Zero-Drift current sense amplifiers in the same package and pinout. The A1 variant has a gain of 20 V/V, while the A2 variant has a gain of 50 V/V. The choice depends on the shunt voltage range and ADC input span required.