# COS8552MR

**COSINE** · Operational Amplifier · MSOP-8

COS8552MR 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 | OUT1 | output | Output of amplifier A. Rail-to-rail output; swing extends to within ~5mV of each supply rail with RL=100kΩ (15mV with RL=10kΩ). Short-circuit sourcing/sinking current is ±7mA. |
| 2 | -IN1 | input | Inverting input of amplifier A. Input voltage range extends from -Vs -0.3V to +Vs +0.3V (absolute max ±0.5V beyond rails). Input bias current ±100pA typical. |
| 3 | +IN1 | input | Non-inverting input of amplifier A. Same common-mode voltage range as -IN1 (-Vs to +Vs, rail-to-rail input). Input bias current ±100pA typical. |
| 4 | -Vs | power_in | Negative supply or ground pin. In single-supply operation tie to GND; in dual-supply operation connect to negative rail. If not connected to ground, bypass with a 0.1µF capacitor as close to the part as possible. Total supply (+Vs to -Vs) must not exceed 6V. |
| 5 | +IN2 | input | Non-inverting input of amplifier B. Rail-to-rail input; common-mode range -Vs to +Vs. Input bias current ±100pA typical. |
| 6 | -IN2 | input | Inverting input of amplifier B. Input voltage range extends from -Vs -0.3V to +Vs +0.3V. Input bias current ±100pA typical. |
| 7 | OUT2 | output | Output of amplifier B. Rail-to-rail output; swing extends to within ~5mV of each supply rail with RL=100kΩ. Short-circuit sourcing/sinking current is ±7mA. |
| 8 | +Vs | power_in | Positive supply pin. Operating range 1.8V to 5.5V (absolute max 6V from -Vs). Quiescent current 55µA per amplifier at Vs=3.0V. Place a 0.1µF bypass capacitor as close to the pin as possible, between +Vs and -Vs (or between +Vs and ground). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | COSINE |
| Package | MSOP-8 |
| Category | Op-amp/Cmp |
| Pins | 8 |

## Ordering variants

Same part, different packaging or reel option.

- `COS8552MRA`
- `COS8552MRB`
- `COS8552MRC`
- `COS8552SRA`
- `COS8552SR`
- `COS8552SRC`
- `COS8552SRD`

## CAD (KiCad official)

- Symbol: `COS8552MR`
- Footprint: `Package_SO:MSOP-8_3x3mm_P0.65mm`
- 3D model: MSOP-8 (KiCad packages3D, STEP)
- 3D model files: `cos8552mr-etched.step` / `cos8552mr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cos8552mr.step` / `cos8552mr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [COSINE datasheet](docs/cos8552mr-datasheet.pdf) (12 pp, sha256 `845c61f20f164396`, retrieved 2026-08-17, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/cos8552mr-datasheet.pdf)