component

INA168

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by Ray

TI high-side current shunt monitor with current output, SOT-23-5. Up to 60 V common mode, external gain resistor. Datasheet-verified.

componentamplifiercurrent-sensehigh-sidecurrent-outputsot-23-5texas-instruments
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INA168

Texas Instruments · Current-sense amplifier · SOT-23-5

Measures current through a high-side shunt on a rail up to 60 V and mirrors it as a current out of the OUT pin, which a single load resistor turns into a voltage of whatever scale you choose. Setting the gain with that one external resistor makes it flexible across ranges, and the high common-mode ceiling lets it sit on motor and battery rails. It runs from a 2.7 to 60 V supply. A simple, adjustable high-side current monitor. The INA138 is the same part at lower bandwidth.

Pinout

Pin Name Type Function
1 OUT output Output current. Sourced into an external load resistor R_L to ground; V_OUT = I_S * R_S * R_L / 5 kΩ. Transconductance is 200 µA/V typical.
2 GND power_in Device ground reference.
3 VIN+ input Positive differential input; connect to the high-side of the external shunt resistor R_S. Common-mode range 2.7 V to 60 V, independent of V+.
4 VIN- input Negative differential input; connect to the low-side of the external shunt resistor R_S (load side). Full-scale sense voltage (VIN+ − VIN−) 100 mV nom, 500 mV max.
5 V+ power_in Power supply voltage, 2.7 V to 60 V. Independent of the input common-mode voltage; quiescent current typically 25 µA.

Key specifications

Parameter Value
Type High-side current shunt monitor (current output)
Common-mode range 2.7-60 V
Gain Set by external output resistor
Output Current, mirrored from shunt
Bandwidth Up to 800 kHz
Supply 2.7-60 V
Package SOT-23-5

Ordering variants

Same part, different packaging or reel option.

  • INA168NA (SOT-23-5)
  • INA168NA/3K (SOT-23-5, tape & reel)

CAD (KiCad official)

  • Symbol: Amplifier_Current:INA168 (KiCad official)
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (28 pp, sha256 381c48493d9daa2e, retrieved 2026-08-17, tier: manufacturer)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF