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Texas Instruments INA186A3IDDFR — Analog & Data Acquisition

TI INA186A3IDDFR Current Sense Amplifier, Zero-Drift

MPNINA186A3IDDFR
End of Life

Texas Instruments INA186A3IDDFR, Zero-Drift series, Current Sense Amplifier, 1 circuit, 45 kHz GBW, 0.3 V/µs slew rate, Rail-to-Rail output, 1.7 V to 5.5 V supply, TSOT-23-8 package, -40°C to 125°C.

$1.65Ref. price · indicative, final on quote
Texas Instruments INA186A3IDDFR datasheet (PDF)
PackagingSOT-23-8
RoHSROHS3 Compliant
SeriesZero-Drift
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

INA186A3IDDFR 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
CaseSOT-23-8
Number of circuits1

Product details

It measures current across a shunt resistor on high-side or low-side rails, outputting a rail-to-rail voltage proportional to the sensed current.

Power budget and bandwidth — what the 48 µA and 45 kHz tell you

At 48 µA quiescent supply current, this part fits always-on current-sense nodes in battery-powered equipment where every microamp matters. The 45 kHz gain-bandwidth product is sufficient for DC and low-frequency load transients — think battery charging profiles, overcurrent detection, or average current monitoring — but not for high-speed switching regulator loops that need MHz bandwidth. The 0.3 V/µs slew rate matches the 45 kHz GBW; expect clean settling on step changes from the shunt.

Housed in a TSOT-23-8 (SOT-23-8) surface-mount package. Tape & Reel and Cut Tape options available for prototyping or production runs.

Frequently asked questions

Can INA186A3IDDFR be used in high-side current sensing?

Yes. The INA186A3IDDFR is a current-sense amplifier designed for both high-side and low-side shunt measurements. Its 1.7 V to 5.5 V supply range and rail-to-rail output support common high-side configurations.

What are the alternatives to INA186A3IDDFR?

For a wider bandwidth, the INA254A1IPWAR offers 350 kHz GBW and 2.4 V/µs slew rate in a similar current-sense role, but with higher supply current. The INA4290A2IRGVR provides four channels at 1.1 MHz GBW. Neither is a drop-in replacement — verify pinout and gain settings against your design.