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INA138NA

Public Made by Adom

by adom

Texas Instruments Current-Sensing Amplifiers, SOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs ina138na: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
viewers ina138na: viewers · Ray 1mo ago
ina138na-etched.fit.json ina138na: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
ina138na-etched.glb ina138na: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
ina138na-etched.step ina138na: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
ina138na.glb Publish 0.1.0 · Ray 1mo ago
ina138na.kicad_mod Publish 0.1.0 · Ray 1mo ago
ina138na.kicad_sym Publish 0.1.0 · Ray 1mo ago
ina138na.lbr Publish 0.1.0 · Ray 1mo ago
ina138na.step Publish 0.1.0 · Ray 1mo ago
package.json Publish 0.2.0 · Ray 1mo ago
page.json Brief states the pinout check that actually ran (was an unconditional "Datasheet-verified pinout") · Ray 11d ago
README.md ina138na: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 17d ago

INA138NA

Texas Instruments · Current-Sensing Amplifiers · SOT-23-5

INA138NA from Texas Instruments, in a SOT-23-5. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 OUT output Output current pin. Sources a current proportional to the differential sense voltage (VIN+ − VIN−) with transconductance of 200 µA/V; an external load resistor RL converts this current to an output voltage VO = IS · RS · RL / 5 kΩ.
2 GND power_in Ground reference for the device.
3 VIN+ input Positive differential input; connects to the high side of the external shunt resistor RS. Common-mode range 2.7 V to 36 V (INA138) is independent of the supply voltage V+.
4 VIN- input Negative differential input; connects to the load side of the external shunt resistor RS. Full-scale sense voltage (VIN+ − VIN−) up to 500 mV.
5 V+ power_in Power supply input. Operating range 2.7 V to 36 V for the INA138; independent of the input common-mode voltage. Quiescent current 25 µA typical.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOT-23-5
Category Op-amp/Cmp
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • INA138NA
  • INA138NA/250
  • INA138NA/3K

CAD (KiCad official)

  • Symbol: INA138NA
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: ina138na-etched.step / ina138na-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ina138na.step / ina138na.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
ina138na.step 85 KB You want the bare part, or you mark your own boards.
ina138na-etched.step 1.4 MB You want the part with INA138NA already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 364 faces against 102 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

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