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Texas Instruments INA186A3IDDFT — Analog & Data Acquisition

INA186A3IDDFT Zero-Drift Current Sense Amplifier, 45 kHz

MPNINA186A3IDDFT
End of Life

Texas Instruments INA186A3IDDFT, Zero-Drift series, current sense amplifier, single circuit, 45 kHz GBW, 0.3 V/µs slew rate, rail-to-rail output, 1.7 V to 5.5 V supply, -40 to 125°C, TSOT-23-8 package.

$1.75Ref. price · indicative, final on quote
Texas Instruments INA186A3IDDFT datasheet (PDF)
PackagingSOT-23-8
RoHSROHS3 Compliant
SeriesZero-Drift
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

INA186A3IDDFT 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

Zero-drift current sense for tight loops

It measures current across a shunt resistor on either the high side or low side of the supply rail, outputting a rail-to-rail voltage proportional to the sensed current. The Zero-Drift architecture keeps input offset voltage at 3 µV and input bias current at 500 pA, so the reading stays accurate even when the shunt drop is only a few millivolts. Supply current is 48 µA, which makes it a fit for battery-powered controllers and field transmitters where every microamp is budgeted.

Housed in a TSOT-23-8 (SOT-23-8) surface-mount package.

The INA186A3IDDFT is an active, current-production part from Texas Instruments, ROHS3 compliant. For dual-sourcing or a higher-bandwidth option, the INA254A1IPWAR (350 kHz, 2.4 V/µs) is a pin-compatible alternative within the same Zero-Drift family, though it draws more supply current.

Frequently asked questions

Is INA186A3IDDFT available via RFQ confirmation?

Stock levels change daily. The part is actively sourced through independent distribution; submit an RFQ to confirm current availability and lead time.

What is the INA186A3IDDFT pinout?

The INA186A3IDDFT uses the standard TSOT-23-8 pinout for TI current sense amplifiers: supply, ground, shunt inputs (IN+, IN-), reference (REF), and output (OUT). The exact pin mapping is in the datasheet.

Is INA186A3IDDFT equivalent to INA186A1IDDFT?

Both are members of the INA186 family and share the same pinout, package, and basic specifications. The difference is in the gain — the A1 variant has a fixed gain of 25 V/V, while the A3 variant has a fixed gain of 100 V/V. Choose based on the shunt value and desired output voltage swing.

What is the INA186A3IDDFT price per unit?

Pricing varies with quantity and market conditions. Submit an RFQ for a current per-unit price on your target volume.

What is the difference between INA186 and INA180?

The INA186 uses a Zero-Drift architecture that delivers lower input offset voltage (3 µV vs. higher typical values for the INA180) and lower offset drift over temperature. The INA180 is a simpler, lower-cost current sense amplifier without Zero-Drift correction. For precision monitoring over a wide temperature range, the INA186 is the better choice.

Can the INA186A3IDDFT be used for high-side current sensing?

Yes. The INA186A3IDDFT supports both high-side and low-side current sensing. The common-mode input range extends from the negative supply to the positive supply, so it can measure current on the high side of the load without level shifting.