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COS129UA

Public Made by Adom

by adom

COSINE Instrumentation OpAmps, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

markdown

COS129UA

COSINE · Instrumentation OpAmps · SOP-8

COS129UA 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 range ±2.25V to ±18V.
5 REF input Reference input that must be driven by low impedance or connected to ground.
6 VOUT output Output.
7 +VS power_in Positive supply, bypass with a 0.1μF ceramic capacitor close to the pin.
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 (COS129UA) VOS -125 25 125 μV COS128UA/129UA 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
Quiescent Current / Amplifier IQ 1 1.5 mA 4
Operating Voltage Range 2.25 18 V ±2.25 to ±18 V 4
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 mA 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 Voltage +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
ESD Susceptibility, HBM 2000 V 2
DC Supply Voltage 2.5 18 V ±2.5V ~ ±18V 3
Operating ambient temperature -40 125 °C 3
Package Thermal Resistance, RθJA RθJA 155 °C/W SOP8, junction-to-ambient 3

CAD (KiCad official)

  • Symbol: COS129UA
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: cos129ua-etched.step / cos129ua-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cos129ua.step / cos129ua.glb are the bare package body.

Provenance

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

  • Datasheet: COSINE datasheet (8 pp, sha256 e35a1a4eec057f26, retrieved 2026-10-23, 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