INA139NA

@@ -0,0 +1,46 @@+# INA139NA++**Texas Instruments** · Current-Sensing Amplifiers · SOT-23-5++INA139NA 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. Sources a current proportional to the differential input voltage (V_IN+ - V_IN-); an external load resistor R_L converts this to an output voltage V_O = I_S * R_S * R_L / 1 kOhm. Absolute maximum voltage on this pin is 40 V. |+| 2 | GND | power_in | Device ground reference. |+| 3 | VIN+ | input | Positive differential input; connect to the more-positive (supply) side of the external current shunt resistor R_S. Common-mode voltage range is 2.7 V to 40 V (INA139), independent of V+. |+| 4 | VIN- | input | Negative differential input; connect to the load side of the external current shunt resistor R_S. Differential input (V_IN+ - V_IN-) absolute maximum range is -40 V to +2 V. |+| 5 | V+ | power_in | Power-supply voltage input. Recommended operating range 2.7 V to 40 V (INA139); absolute maximum 60 V. Quiescent current is typically 60 uA. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOT-23-5 |+| Category | Op-amp/Cmp |+| Pins | 5 |++## Ordering variants++- `INA139NA`+- `INA139NAIDBVR`+- `INA139NAIDBVT`++## CAD (KiCad official)++- Symbol: `INA139NA`+- 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/ina139.pdf) (28 pp, sha256 `dbb74b6cdc543135`, 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/ina139na-datasheet.pdf)

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