# COSINA333MRA

**COSINE** · Instrumentation Amplifiers · MSOP-8

COSINA333MRA from COSINE, in a MSOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | RG | passive | Gain setting pin; for gains greater than 1, place a gain resistor between pins 1 and 8. |
| 2 | VIN- | power_in | Negative input. |
| 3 | VIN+ | power_in | Positive input. |
| 4 | -VS | power_in | Negative supply. |
| 5 | REF | input | Reference input; must be driven by low impedance or connected to ground. |
| 6 | VOUT | output | Output. |
| 7 | +VS | power_in | Positive supply. |
| 8 | RG | passive | Gain setting pin; for gains greater than 1, place a gain resistor between pins 1 and 8. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | COSINE |
| Package | MSOP-8 |
| Category | Amplifiers/Comparators |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `COSINA333MRA`
- Footprint: `Package_SO:MSOP-8_3x3mm_P0.65mm`
- 3D model: MSOP-8 (KiCad packages3D, STEP)
- 3D model files: `cosina333mra-etched.step` / `cosina333mra-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cosina333mra.step` / `cosina333mra.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [COSINE datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590909070524030976) (7 pp, sha256 `f240a1778d0e13a8`, retrieved 2026-09-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-4-6` (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/cosina333mra-datasheet.pdf)