INA138NA

@@ -0,0 +1,46 @@+# 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++- `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)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/ina138.pdf) (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](docs/ina138na-datasheet.pdf)

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