# COS620ARZ

**COSINE** · Instrumentation OpAmps · SOP-8

COS620ARZ 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 | RG | passive | Gain setting pin; for gains greater than 1, a gain resistor is placed between pins 1 and 8, with gain G = 1 + 49.4 kΩ/RG. |
| 2 | VIN- | power_in | Negative input of the instrumentation amplifier, with common-mode input range of -Vs+1.9 V to +Vs-1.2 V. |
| 3 | VIN+ | power_in | Positive input of the instrumentation amplifier, with common-mode input range of -Vs+1.9 V to +Vs-1.2 V. |
| 4 | -VS | power_in | Negative supply; dual supplies from ±2.25 V to ±18 V, with the -Vs supply bypassed to ground by a separate 0.1 µF ceramic capacitor. |
| 5 | REF | input | Reference input that must be driven by a low-impedance source or connected to ground; a series resistance of 8 Ω degrades common-mode rejection to about 80 dB. |
| 6 | VOUT | output | Amplifier output, with output current limited to 50 mA absolute maximum. |
| 7 | +VS | power_in | Positive supply; single-supply operation from +4.5 V to +36 V or dual supplies from ±2.25 V to ±18 V, bypassed close to the pin with a 0.1 µF ceramic capacitor. |
| 8 | RG | passive | Gain setting pin; for gains greater than 1, a gain resistor is placed between pins 1 and 8, with gain G = 1 + 49.4 kΩ/RG. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | COSINE |
| Package | SOP-8 |
| Category | Amplifiers |
| 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 | VOS | -125 | 25 | 125 | μV | COS620ARZ; +VS=+15V, -VS=-15V, TA=+25°C, RL=2kΩ (table header) | 3 |
| Input Offset Voltage Drift | ΔVOS/ΔT |  | 0.2 | 1 | μV/°C | -40 to 125°C | 3 |
| Input Bias Current | IB | -10 | 2 | 10 | nA |  | 3 |
| Input Offset Current | IOS | -10 | 1 | 10 | nA |  | 3 |
| Gain Range | GR | 1 |  | 10000 | V/V |  | 4 |
| Gain Error | GE | -2 |  | 2 | % |  | 4 |
| Output Current | IOUT | -10 |  | 10 | mA | VDROPOUT < 1.2 V | 4 |
| Short-Circuit Current | ISC | -24 |  | 24 | mA |  | 4 |
| Operating Voltage Range |  | 2.25 |  | 18 | V | Dual supply (±VS) | 4 |
| Quiescent Current / Amplifier | IQ |  | 1 | 1.3 | mA | per amplifier | 4 |
| Gain Bandwidth Product | GBWP |  | 1.5 |  | MHz | CL=100pF, RL=10kΩ | 4 |
| Slew Rate | SR |  | 1 |  | V/μs | CL=100pF, RL=10kΩ, Av=1 | 4 |
| Voltage Noise Density | en |  | 8 |  | nV/√Hz | f=1kHz | 4 |
| Power Supply (+Vs to -Vs) |  |  |  | 36 | V |  | 2 |
| Differential Input Voltage Range |  | -36 |  | 36 | V |  | 2 |
| Output Current |  |  |  | 50 | mA |  | 2 |
| Storage Temperature Range |  | -65 |  | 150 | °C |  | 2 |
| Junction Temperature |  |  |  | 150 | °C |  | 2 |
| Operating Temperature Range |  | -40 |  | 125 | °C |  | 2 |
| DC Supply Voltage |  | 2.3 |  | 18 | V | Dual supply ±VS | 3 |
| Operating Ambient Temperature |  | -40 |  | 125 | °C |  | 3 |
| Package Thermal Resistance, junction-to-ambient (SOP8) | RθJA |  | 155 |  | °C/W | SOP8 package | 3 |

## CAD (KiCad official)

- Symbol: `COS620ARZ`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `cos620arz-etched.step` / `cos620arz-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cos620arz.step` / `cos620arz.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [COSINE datasheet](docs/cos620arz-datasheet.pdf) (8 pp, sha256 `9b31190c50a77ce4`, retrieved 2026-11-04, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/cos620arz-datasheet.pdf)