INA168
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TI high-side current shunt monitor with current output, SOT-23-5. Up to 60 V common mode, external gain resistor. Datasheet-verified.
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markdownINA168
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)
- 3D model files:
ina168-etched.step/ina168-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ina168.step/ina168.glbare the bare package body.
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).