# INA281A4IDBVR

**Texas Instruments** · Current Sense Amplifiers · SOT-23-5

INA281A4IDBVR from Texas Instruments, in a SOT-23-5. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | OUT | output | Output voltage representing the amplified differential voltage across the shunt resistor, with swing range of 0.005V to VS-0.07V. |
| 2 | GND | power_in | Ground reference, 0V potential. |
| 3 | IN+ | input | Positive differential input for shunt resistor voltage measurement, with common-mode range of -4V to +110V. |
| 4 | IN- | input | Negative differential input for shunt resistor voltage measurement, with common-mode range of -4V to +110V. |
| 5 | VS | power_in | Power supply voltage input with operating range of 2.7V to 20V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-5 |
| Category | Amplifiers/Comparators |
| Pins | 5 |

## CAD (KiCad official)

- Symbol: `INA281A4IDBVR`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `ina281a4idbvr-etched.step` / `ina281a4idbvr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ina281a4idbvr.step` / `ina281a4idbvr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/ina281) (30 pp, sha256 `b5bbdc809184263b`, retrieved 2026-10-06, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/ina281a4idbvr-datasheet.pdf)