# INA240A3QDRQ1

**Texas Instruments** · Current Sense Amplifiers · SOIC-8

INA240A3QDRQ1 from Texas Instruments, in a SOIC-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 | Analog input connected to the load side of the shunt resistor for differential current measurement. |
| 2 | GND | power_in | Analog ground reference. |
| 3 | REF2 | input | Reference voltage input 2; connect to 0V to VS to adjust output offset. |
| 4 | NC | unconnected | No connection; reserved for future use, may be grounded or left floating. |
| 5 | OUT | output | Analog output voltage signal. |
| 6 | VS | power_in | Power supply voltage input; operating range 2.7V to 5.5V. |
| 7 | REF1 | input | Reference voltage input 1; connect to 0V to VS to adjust output offset. |
| 8 | IN+ | input | Analog input connected to the source side of the shunt resistor for differential current measurement. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `INA240A3QDRQ1`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `ina240a3qdrq1-etched.step` / `ina240a3qdrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ina240a3qdrq1.step` / `ina240a3qdrq1.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/ina240-q1) (38 pp, sha256 `c39d41044d3f311b`, retrieved 2026-10-03, 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/ina240a3qdrq1-datasheet.pdf)