# INA241A4IDDFR

**Texas Instruments** · Current Sense Amplifiers · TSOT-23-8

INA241A4IDDFR from Texas Instruments, in a TSOT-23-8. 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 | IN- | input | Current-sense amplifier negative input; for high-side applications connect to the load side of the sense resistor, and for low-side applications connect to the ground side of the sense resistor. |
| 2 | GND | power_in | Ground reference pin for the device. |
| 3 | REF2 | input | Reference 2 voltage input; connect to a voltage potential from 0 V to VS. |
| 4 | NC | unconnected | Reserved pin; the datasheet says to connect it to ground. |
| 5 | OUT | output | Amplifier output voltage. |
| 6 | VS | power_in | Power supply input, 2.7 V to 20 V. |
| 7 | REF1 | input | Reference 1 voltage input; connect to a voltage potential from 0 V to VS. |
| 8 | IN+ | input | Current-sense amplifier positive input; for high-side applications connect to the bus-voltage side of the sense resistor, and for low-side applications connect to the load side of the sense resistor. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSOT-23-8 |
| Category | Amplifiers/Comparators |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `INA241A4IDDFR`
- Footprint: `Package_TO_SOT_SMD:TSOT-23-8`
- 3D model: TSOT-23-8 (KiCad packages3D, STEP)
- 3D model files: `ina241a4iddfr-etched.step` / `ina241a4iddfr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ina241a4iddfr.step` / `ina241a4iddfr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603406376454938624) (43 pp, sha256 `12a6925f886fa1a0`, retrieved 2026-10-07, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (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/ina241a4iddfr-datasheet.pdf)