# COSOP27SRB

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

COSOP27SRB 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; the pin table also describes an optional VOS trim function where a nulling resistor (e.g. 20kΩ) goes between pins 1 and 8. |
| 2 | -IN | input | Inverting input of the amplifier, with a voltage range 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, with a 0.1μF bypass capacitor placed as close to the part as possible between the supply pins or between the supply pins and ground. |
| 8 | NC | unconnected | No connection per the pin diagram; the pin table also describes an optional VOS trim function where a nulling resistor (e.g. 20kΩ) goes between pins 1 and 8. |

## Key specifications

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

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input Offset Voltage (B grade) | VOS |  | 10 | 100 | μV |  | 4 |
| Input Offset Voltage Drift | ΔVOS/ΔT |  | 0.2 | 0.7 | μV/°C | -40 to 125°C | 4 |
| Input Bias Current | IB |  | 4 | 8 | nA |  | 4 |
| Input Offset Current | IOS |  | 0.5 | 2 | nA |  | 4 |
| Common-Mode Voltage Range | VCM | 13 | 14 |  | V |  | 4 |
| Common-Mode Rejection Ratio | CMRR | 80 | 110 |  | dB |  | 4 |
| Open-Loop Voltage Gain | AOL | 90 | 120 |  | dB | RL ≥ 2kΩ, VO = ±10V | 4 |
| Output Voltage Swing | VO(PP) | 12 | 13.8 |  | V | RL ≥ 10kΩ | 4 |
| Operating Voltage Range |  | 2.25 |  | 18 | V |  | 4 |
| Power Supply Rejection Ratio | PSRR | 100 | 120 |  | dB |  | 4 |
| Quiescent Current / Amplifier | IQ |  | 1.2 | 1.5 | mA |  | 4 |
| Gain Bandwidth Product | GBWP | 5 | 8 |  | MHz | CL=100pF, RL=10kΩ | 4 |
| Short-Circuit Current | ISC |  | 28 |  | mA |  | 4 |
| Slew Rate | SR |  | 2.8 |  | V/μs | CL=100pF, RL=10kΩ, Av=1 | 4 |
| Voltage Noise Density | en |  | 5 |  | nV/√Hz | f=1kHz | 4 |
| Differential Input Voltage Range |  | -0.7 |  | 0.7 | V |  | 3 |
| Power Supply: +Vs to -Vs |  |  |  | 36 | V |  | 3 |
| Output Current |  |  |  | 50 | mA |  | 3 |
| Storage Temperature Range |  | -65 |  | 150 | °C |  | 3 |
| Junction Temperature |  |  |  | 150 | °C |  | 3 |
| Operating Temperature Range (absolute maximum table) |  | -40 |  | 125 | °C |  | 3 |
| ESD Susceptibility, HBM |  |  |  | 2000 | V |  | 3 |
| DC Supply Voltage |  | 2.25 |  | 18 | V |  | 3 |
| Operating Ambient Temperature |  | -40 |  | 85 | °C |  | 3 |
| Package Thermal Resistance, junction-to-ambient (SOP8) | RθJA |  | 155 |  | °C/W |  | 3 |

## CAD (KiCad official)

- Symbol: `COSOP27SRB`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `cosop27srb-etched.step` / `cosop27srb-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cosop27srb.step` / `cosop27srb.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [COSINE datasheet](docs/cosop27srb-datasheet.pdf) (8 pp, sha256 `43c6ffa5d6a958ab`, retrieved 2026-11-05, 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/cosop27srb-datasheet.pdf)