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Texas Instruments INA186A1QDDFRQ1 — Logic ICs
Texas Instruments

INA186A1QDDFRQ1 Current Sense Amplifier, AEC-Q100, 45 kHz

MPNINA186A1QDDFRQ1
End of Life

Texas Instruments INA186A1QDDFRQ1, Automotive AEC-Q100 current sense amplifier, 40-V bidirectional, 45 kHz bandwidth, 0.3 V/µs slew rate, 48 µA supply, rail-to-rail output, TSOT-23-8 package.

$1.64Ref. price · indicative, final on quote
INA186A1QDDFRQ1 datasheet
PackagingSOT-23-8
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
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Specifications

INA186A1QDDFRQ1 Technical Specifications
ParameterValue
SeriesAutomotive, AEC-Q100
Output typeRail-to-Rail
Mounting typeSurface 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)
-3db bandwidth45 kHz
PackageTape & Reel (TR); Cut Tape (CT)
Slew rate0.3V/µs
CaseSOT-23-8
Number of circuits1

Product details

Automotive current sense in a TSOT-23-8 footprint

The rail-to-rail output stage and 45 kHz bandwidth support direct connection to an ADC for real-time current feedback in motor drives, solenoid control, and battery monitoring.

48 µA supply, 3 µV offset — precision where it counts

With a quiescent current of 48 µA, this amplifier adds negligible load to the regulated supply rail — important for always-on modules in automotive body controllers and battery-management systems. The 3 µV input offset voltage and 500 pA input bias current allow accurate measurement across low-value shunt resistors (sub-milliohm) without significant voltage error. The 0.3 V/µs slew rate and 45 kHz bandwidth are a deliberate trade-off: fast enough to capture solenoid inrush and load-step events, but filtered enough to reject high-frequency switching noise from adjacent DC-DC converters.

This part is specified for the thermal extremes found in engine compartments, transmission control units, and exhaust-aftertreatment electronics. The TSOT-23-8 package (supplier device package TSOT-23-8) keeps the board footprint small, which helps when routing multiple sense channels on a dense ECU layout.

Frequently asked questions

Can INA186A1QDDFRQ1 replace INA186A0QDDFRQ1?

The INA186A1QDDFRQ1 is a gain-grade variant within the same INA186 family. Both share the same TSOT-23-8 footprint, supply range, and AEC-Q100 qualification. The A1 variant has a different fixed gain than the A0 — verify the gain setting against your shunt and ADC input range before substituting.

Can INA186A1QDDFRQ1 be used in 5V systems?

Yes. The common-mode input range extends to 40 V regardless of the supply voltage, so it can sense a 5 V rail even when the rail itself is the supply.