# INA333AIDRGT

**Texas Instruments** · Instrumentation Amplifiers · WSON-8-EP(3x3)

INA333AIDRGT from Texas Instruments, in a WSON-8-EP(3x3). 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 | RG | passive | Gain setting pin; connect external resistor between pins 1 and 8 to set gain G = 1 + 100kΩ/RG. |
| 2 | VIN- | power_in | Negative (inverting) input; recommended input voltage range (V-) + 0.1 to (V+) - 0.1 V. |
| 3 | VIN+ | power_in | Positive (non-inverting) input; recommended input voltage range (V-) + 0.1 to (V+) - 0.1 V. |
| 4 | V- | power_in | Negative supply; operating voltage range 1.8 to 5.5 V. |
| 5 | REF | input | Reference input; must be driven by low impedance or connected to ground. |
| 6 | VOUT | output | Output; output voltage range (V-) + 0.05 to (V+) - 0.05 V. |
| 7 | V+ | power_in | Positive supply; operating voltage range 1.8 to 5.5 V. |
| 8 | RG | passive | Gain setting pin; connect external resistor between pins 1 and 8 to set gain G = 1 + 100kΩ/RG. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | WSON-8-EP(3x3) |
| Category | Amplifiers/Comparators |
| Pins | 9 |

## CAD (KiCad official)

- Symbol: `INA333AIDRGT`
- Footprint: `Package_SON:WSON-8-1EP_3x3mm_P0.5mm_EP1.6x2.0mm`
- 3D model: WSON-8-EP(3x3) (KiCad packages3D, STEP)
- 3D model files: `ina333aidrgt-etched.step` / `ina333aidrgt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ina333aidrgt.step` / `ina333aidrgt.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/ina333) (35 pp, sha256 `b71fc9ea1ae31811`, 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/ina333aidrgt-datasheet.pdf)