component
COS129U
Public Made by Adomby adom
COSINE Instrumentation OpAmps, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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COS129U
COSINE · Instrumentation OpAmps · SOP-8
COS129U 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, place a gain resistor between pin 1 and pin 8 (G = 1 + 49.4 kΩ/RG for COS129). |
| 2 | VIN- | power_in | Negative input. |
| 3 | VIN+ | power_in | Positive input. |
| 4 | -VS | power_in | Negative supply; dual supply ±2.25V to ±18V. |
| 5 | REF | input | Reference input; must be driven by low impedance or connected to ground. |
| 6 | VOUT | output | Output. |
| 7 | +VS | power_in | Positive supply; dual supply ±2.25V to ±18V. |
| 8 | RG | passive | Gain setting pin; for gains greater than 1, place a gain resistor between pin 1 and pin 8. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | COSINE |
| Package | SOP-8 |
| Category | Operational Amplifier/Comparator |
| 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 (COS129U) | VOS | -50 | 10 | 50 | μV | COS128U/129U; printed ±10 typ, ±50 max | 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 | printed ±2 typ, ±10 max | 3 |
| Input Offset Current | IOS | -10 | 1 | 10 | nA | printed ±1 typ, ±10 max | 3 |
| Gain Range | GR | 1 | 10000 | V/V | 4 | ||
| Gain Error | GE | -2 | 2 | % | printed ±2 | 4 | |
| Output Current | IOUT | -10 | 10 | mA | VDROPOUT < 1.2 V | 4 | |
| Operating Voltage Range | 2.25 | 18 | V | printed ±2.25 to ±18 | 4 | ||
| Quiescent Current / Amplifier | IQ | 1 | 1.5 | mA | 4 | ||
| Power Supply Voltage +Vs to -Vs | 36 | V | 2 | ||||
| Differential Input Voltage Range | -36 | 36 | V | printed ±36 | 2 | ||
| Output Current | 50 | mA | 2 | ||||
| Storage Temperature Range | -65 | 150 | °C | 2 | |||
| Junction Temperature | 150 | °C | 2 | ||||
| Operating Temperature Range (absolute max table) | -40 | 125 | °C | 2 | |||
| ESD Susceptibility, HBM | 2000 | V | HBM | 2 | |||
| DC Supply Voltage | 2.5 | 18 | V | printed ±2.5V ~ ±18V | 3 | ||
| Operating ambient temperature | -40 | 125 | °C | 3 | |||
| Package Thermal Resistance Junction-to-ambient | RθJA | 155 | °C/W | SOP8 | 3 | ||
| Common-Mode Rejection Ratio | CMRR | 125 | dB | G=100 | 3 | ||
| Short-Circuit Current | ISC | 24 | mA | printed ±24 | 4 | ||
| Power Supply Rejection Ratio | PSRR | 120 | dB | 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 |
CAD (KiCad official)
- Symbol:
COS129U - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
cos129u-etched.step/cos129u-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cos129u.step/cos129u.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: COSINE datasheet (8 pp, sha256
e35a1a4eec057f26, retrieved 2026-10-24, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-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).
# COS129U
**COSINE** · Instrumentation OpAmps · SOP-8
COS129U 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, place a gain resistor between pin 1 and pin 8 (G = 1 + 49.4 kΩ/RG for COS129). |
| 2 | VIN- | power_in | Negative input. |
| 3 | VIN+ | power_in | Positive input. |
| 4 | -VS | power_in | Negative supply; dual supply ±2.25V to ±18V. |
| 5 | REF | input | Reference input; must be driven by low impedance or connected to ground. |
| 6 | VOUT | output | Output. |
| 7 | +VS | power_in | Positive supply; dual supply ±2.25V to ±18V. |
| 8 | RG | passive | Gain setting pin; for gains greater than 1, place a gain resistor between pin 1 and pin 8. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | COSINE |
| Package | SOP-8 |
| Category | Operational Amplifier/Comparator |
| 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 (COS129U) | VOS | -50 | 10 | 50 | μV | COS128U/129U; printed ±10 typ, ±50 max | 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 | printed ±2 typ, ±10 max | 3 |
| Input Offset Current | IOS | -10 | 1 | 10 | nA | printed ±1 typ, ±10 max | 3 |
| Gain Range | GR | 1 | | 10000 | V/V | | 4 |
| Gain Error | GE | -2 | | 2 | % | printed ±2 | 4 |
| Output Current | IOUT | -10 | | 10 | mA | VDROPOUT < 1.2 V | 4 |
| Operating Voltage Range | | 2.25 | | 18 | V | printed ±2.25 to ±18 | 4 |
| Quiescent Current / Amplifier | IQ | | 1 | 1.5 | mA | | 4 |
| Power Supply Voltage +Vs to -Vs | | | | 36 | V | | 2 |
| Differential Input Voltage Range | | -36 | | 36 | V | printed ±36 | 2 |
| Output Current | | | | 50 | mA | | 2 |
| Storage Temperature Range | | -65 | | 150 | °C | | 2 |
| Junction Temperature | | | | 150 | °C | | 2 |
| Operating Temperature Range (absolute max table) | | -40 | | 125 | °C | | 2 |
| ESD Susceptibility, HBM | | | | 2000 | V | HBM | 2 |
| DC Supply Voltage | | 2.5 | | 18 | V | printed ±2.5V ~ ±18V | 3 |
| Operating ambient temperature | | -40 | | 125 | °C | | 3 |
| Package Thermal Resistance Junction-to-ambient | RθJA | | 155 | | °C/W | SOP8 | 3 |
| Common-Mode Rejection Ratio | CMRR | | 125 | | dB | G=100 | 3 |
| Short-Circuit Current | ISC | | 24 | | mA | printed ±24 | 4 |
| Power Supply Rejection Ratio | PSRR | | 120 | | dB | | 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 |
## CAD (KiCad official)
- Symbol: `COS129U`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `cos129u-etched.step` / `cos129u-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cos129u.step` / `cos129u.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [COSINE datasheet](docs/cos129u-datasheet.pdf) (8 pp, sha256 `e35a1a4eec057f26`, retrieved 2026-10-24, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/cos129u-datasheet.pdf)