# INA240A4EDRQ1

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

INA240A4EDRQ1 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 | Negative differential input; connected to load side of shunt resistor for current measurement |
| 2 | GND | power_in | Analog ground reference; 0V reference for all circuits |
| 3 | REF2 | input | Reference 2 voltage input; connect to 0V to VS to adjust output midpoint for single or dual-directional current measurement |
| 4 | NC | unconnected | No connection; pin not connected to internal circuit; may be grounded or left floating |
| 5 | OUT | output | Analog output voltage; output range limited by supply voltage VS with 50mV minimum above GND and 200mV minimum below VS |
| 6 | VS | power_in | Power supply voltage; operating range 2.7V to 5.5V, supports single supply operation |
| 7 | REF1 | input | Reference 1 voltage input; connect to 0V to VS to adjust output midpoint for single or dual-directional current measurement |
| 8 | IN+ | input | Positive differential input; connected to power side of shunt resistor for current measurement; differential range ±80V maximum |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `INA240A4EDRQ1`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `ina240a4edrq1-etched.step` / `ina240a4edrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ina240a4edrq1.step` / `ina240a4edrq1.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 2026-10-07, 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/ina240a4edrq1-datasheet.pdf)