# INA310B3QDGKRQ1

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

INA310B3QDGKRQ1 from Texas Instruments, in a VSSOP-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 | VS | power_in | Power supply input, specified for 2.7 V to 20 V operation. |
| 2 | OUT | output | Output voltage of the current sense amplifier. |
| 3 | CMPIN | input | Comparator input; the absolute maximum range is GND - 0.3 V to the lesser of 5.5 V or VS. |
| 4 | GND | power_in | Ground reference for the device. |
| 5 | RESET | input | Active-low comparator reset pin: Low selects transparent mode and High selects latch mode. |
| 6 | CMPOUT | output | Open-drain comparator output that latches high when RESET is High; its absolute maximum is GND - 0.3 V to 22 V. |
| 7 | IN- | input | Shunt resistor negative sense input; connect to the load side of the sense resistor for high-side use and to the ground side for low-side use. |
| 8 | IN+ | input | Shunt resistor positive sense input; connect to the bus-voltage side of the sense resistor for high-side use and to the load side for low-side use. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `INA310B3QDGKRQ1`
- Footprint: `Package_SO:VSSOP-8_2.3x2mm_P0.5mm`
- 3D model: VSSOP-8 (KiCad packages3D, STEP)
- 3D model files: `ina310b3qdgkrq1-etched.step` / `ina310b3qdgkrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ina310b3qdgkrq1.step` / `ina310b3qdgkrq1.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/8603646916455002112) (33 pp, sha256 `0aacc9d30cf73fb5`, retrieved 2026-10-08, 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/ina310b3qdgkrq1-datasheet.pdf)