# COSOP27SRC

**COSINE** · Precision Op Amps · SOP-8

COSOP27SRC from COSINE, in a SOP-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 | NC | unconnected | No connection per the pin diagram, although the pin function table also mentions an optional VOS trim resistor (e.g. 20kΩ) between pins 1 and 8. |
| 2 | -IN | input | Inverting input of the amplifier, whose voltage range can go from -Vs to +Vs. |
| 3 | +IN | input | Non-inverting input of the amplifier, with the same voltage range as -IN. |
| 4 | -Vs | power_in | Negative power supply or ground; if not connected to ground, bypass it with a 0.1µF capacitor placed as close to the part as possible. |
| 5 | NC | unconnected | No connection. |
| 6 | OUT | output | Amplifier output, whose voltage range extends to within millivolts of each supply rail. |
| 7 | +Vs | power_in | Positive power supply, to be bypassed with a 0.1µF capacitor placed as close to the part as possible. |
| 8 | NC | unconnected | No connection per the pin diagram, although the pin function table also mentions an optional VOS trim resistor (e.g. 20kΩ) between pins 1 and 8. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `COSOP27SRC`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `cosop27src-etched.step` / `cosop27src-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cosop27src.step` / `cosop27src.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [COSINE datasheet](docs/cosop27src-datasheet.pdf) (8 pp, sha256 `43c6ffa5d6a958ab`, retrieved 2026-10-27, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/cosop27src-datasheet.pdf)