# COS4177SR

**COSINE** · Precision Op Amps · SOP-14

COS4177SR from COSINE, in a SOP-14. 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 | OUTA | output | Output of amplifier A, which swings to within millivolts of each supply rail. |
| 2 | -INA | input | Inverting input of amplifier A, voltage range from -Vs to +Vs. |
| 3 | +INA | input | Non-inverting input of amplifier A, same voltage range as the inverting input (-Vs to +Vs). |
| 4 | +Vs | power_in | Positive power supply (+2.5V to +18V with dual supplies, 36V total max); bypass with 0.1µF close to the pin. |
| 5 | +INB | input | Non-inverting input of amplifier B, same voltage range as the inverting input (-Vs to +Vs). |
| 6 | -INB | input | Inverting input of amplifier B, voltage range from -Vs to +Vs. |
| 7 | OUTB | output | Output of amplifier B, which swings to within millivolts of each supply rail. |
| 8 | OUTC | output | Output of amplifier C, which swings to within millivolts of each supply rail. |
| 9 | -INC | input | Inverting input of amplifier C, voltage range from -Vs to +Vs. |
| 10 | +INC | input | Non-inverting input of amplifier C, same voltage range as the inverting input (-Vs to +Vs). |
| 11 | -Vs | power_in | Negative power supply or ground; bypass with 0.1µF close to the pin if not grounded. |
| 12 | +IND | input | Non-inverting input of amplifier D, same voltage range as the inverting input (-Vs to +Vs). |
| 13 | -IND | input | Inverting input of amplifier D, voltage range from -Vs to +Vs. |
| 14 | OUTD | output | Output of amplifier D, which swings to within millivolts of each supply rail. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | COSINE |
| Package | SOP-14 |
| Category | Amplifiers/Comparators |
| Pins | 14 |

## 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 | VOS | -125 | 25 | 125 | μV | +VS=+15V, -VS=-15V, TA=+25°C, RL=10kΩ to VS/2; COS4177 variant | 4 |
| Input Bias Current | IB | -7 | 0.5 | 7 | nA | +VS=+15V, -VS=-15V, TA=+25°C, RL=10kΩ to VS/2 | 4 |
| Input Offset Current | IOS | -7 | 0.5 | 7 | nA | +VS=+15V, -VS=-15V, TA=+25°C, RL=10kΩ to VS/2 | 4 |
| Common-Mode Voltage Range | VCM | -13 | 14 |  | V | +VS=+15V, -VS=-15V, TA=+25°C, RL=10kΩ to VS/2 | 4 |
| Common-Mode Rejection Ratio | CMRR | 110 | 125 |  | dB |  | 4 |
| Open-Loop Voltage Gain | AOL | 90 | 120 |  | dB | RL ≥ 2kΩ, VO = ±10V | 4 |
| Output Voltage High | VOH | 14 | 14.1 |  | V |  | 4 |
| Output Voltage Low | VOL | -14.1 | -13.9 |  | V |  | 4 |
| Output Current | IOUT | -10 |  | 10 | mA | VDROPOUT < 1.2 V | 4 |
| Short-Circuit Current | ISC | -28 |  | 28 | mA |  | 4 |
| Operating Voltage Range |  | 2.5 |  | 18 | V |  | 4 |
| Power Supply Rejection Ratio | PSRR | 120 | 130 |  | dB |  | 4 |
| Quiescent Current / Amplifier | IQ |  | 330 | 530 | μA |  | 4 |
| Input Offset Voltage Drift | ΔVOS/ΔT |  | 0.2 | 0.7 | μV/°C | -40 to 125°C | 4 |
| Supply Voltage (absolute maximum, +Vs to -Vs) |  |  |  | 36 | V | Power Supply: +Vs to -Vs | 3 |
| Output Current |  |  |  | 50 | mA |  | 3 |
| Storage Temperature Range |  | -65 |  | 150 | °C |  | 3 |
| Junction Temperature |  |  |  | 150 | °C |  | 3 |
| Operating Temperature Range |  | -40 |  | 125 | °C |  | 3 |
| ESD Susceptibility, HBM |  |  |  | 2000 | V | HBM | 3 |
| DC Supply Voltage |  | 2.5 |  | 18 | V |  | 3 |
| Operating Ambient Temperature |  | -40 |  | 85 | °C |  | 3 |
| Package Thermal Resistance, junction-to-ambient (SOP14) | RθJA |  | 82 |  | °C/W | SOP14 package, junction-to-ambient | 3 |

## CAD (KiCad official)

- Symbol: `COS4177SR`
- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`
- 3D model: SOP-14 (KiCad packages3D, STEP)
- 3D model files: `cos4177sr-etched.step` / `cos4177sr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cos4177sr.step` / `cos4177sr.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/8776488972732518400) (9 pp, sha256 `081dec7544ce6bdd`, retrieved 2026-10-20, 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/cos4177sr-datasheet.pdf)