# INA241A4QDDFRQ1

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

INA241A4QDDFRQ1 from Texas Instruments, in a SOT-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; connect to the load side of the sense resistor for high-side use, or to the ground side for low-side use. |
| 2 | GND | power_in | Device ground. |
| 3 | REF2 | input | Reference 2 voltage, which must be between 0 V and VS; connect to a voltage potential (see the output-adjustment reference connection options). |
| 4 | NC | unconnected | Reserved pin; the datasheet says to connect it to ground. |
| 5 | OUT | output | Output voltage of the current-sense amplifier. |
| 6 | VS | power_in | Power supply, 2.7 V to 20 V. |
| 7 | REF1 | input | Reference 1 voltage, which must be between 0 V and VS; connect to a voltage potential (see the output-adjustment reference connection options). |
| 8 | IN+ | input | Current-sense amplifier positive input; connect to the bus-voltage side of the sense resistor for high-side use, or to the load side for low-side use. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `INA241A4QDDFRQ1`
- Footprint: `Package_TO_SOT_SMD:SOT-23-8`
- 3D model: SOT-23-8 (KiCad packages3D, STEP)
- 3D model files: `ina241a4qddfrq1-etched.step` / `ina241a4qddfrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ina241a4qddfrq1.step` / `ina241a4qddfrq1.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/cn/lit/ds/symlink/ina241a-q1.pdf) (49 pp, sha256 `f47e70b46c6401e5`, retrieved 2026-10-08, 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-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/ina241a4qddfrq1-datasheet.pdf)