COS128U

{
  "slug": "cos128u",
  "version": "0.1.0",
  "type": "component",
  "description": "COSINE Instrumentation Amplifiers, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "amplifiers-comparators",
    "cos128u",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cos128u.kicad_sym",
    "cos128u.kicad_mod",
    "cos128u.glb",
    "cos128u.step",
    "cos128u.lbr",
    "docs/hero.png",
    "docs/cos128u-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "cos128u-hero.glb",
    "cos128u-hero.overlay.json",
    "cos128u-etched.glb"
  ],
  "component": {
    "mpn": "COS128U",
    "manufacturer": "COSINE",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Amplifiers/Comparators",
    "subcategory": "Instrumentation Amplifiers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590904278586642432",
    "parts": {
      "symbol": "cos128u.kicad_sym",
      "footprint": "cos128u.kicad_mod",
      "model_3d": "cos128u-hero.glb",
      "model_3d_plain": "cos128u-etched.glb",
      "model_3d_step": "cos128u-etched.step",
      "model_3d_step_plain": "cos128u.step",
      "lbr": "cos128u.lbr"
    },
    "distributor_links": {
      "lcsc": "C5306797"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T11:21:38Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "RG",
        "type": "passive",
        "description": "Gain-setting pin; for gains greater than 1, a single gain resistor is connected between pin 1 and pin 8 (G = 1 + 50 kΩ/RG for COS128U, 1 + 49.4 kΩ/RG for COS129)."
      },
      {
        "number": "2",
        "name": "VIN-",
        "type": "power_in",
        "description": "Negative (inverting) differential input; the input common-mode voltage range is -Vs+1.9 V to +Vs-1.2 V."
      },
      {
        "number": "3",
        "name": "VIN+",
        "type": "power_in",
        "description": "Positive (non-inverting) differential input; the input common-mode voltage range is -Vs+1.9 V to +Vs-1.2 V."
      },
      {
        "number": "4",
        "name": "-VS",
        "type": "power_in",
        "description": "Negative supply rail; operates from dual supplies of ±2.25 V to ±18 V (or single supply from +4.5 V to +36V with +VS)."
      },
      {
        "number": "5",
        "name": "REF",
        "type": "input",
        "description": "Reference input that must be driven by a low-impedance source or connected to ground; a series resistance of 8 Ω degrades typical CMR to about 80 dB."
      },
      {
        "number": "6",
        "name": "VOUT",
        "type": "output",
        "description": "Output; output swing is +VS-1.1 V (high) to -VS+1.1 V (low) and output current is ±10 mA with VDROPOUT < 1.2 V."
      },
      {
        "number": "7",
        "name": "+VS",
        "type": "power_in",
        "description": "Positive supply rail; operates from dual supplies of ±2.25 V to ±18 V (or single supply from +4.5 V to +36V)."
      },
      {
        "number": "8",
        "name": "RG",
        "type": "passive",
        "description": "Gain-setting pin; the gain resistor RG is connected between pin 8 and pin 1 (internally the pin 1 and pin 8 pair are the two RG terminals)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pins 1 and 8 are both named RG in the datasheet pin table; they are the two terminals of the gain re; The datasheet has a single pin-function table (page 2) for the 8-pin packages and does not give a se; Pin 4 and 7 supply ranges are quoted from the recommended operating conditions and application notes"
        ],
        "pages_sent": 8,
        "cost_usd": 0.0314,
        "at": "2026-10-18T11:18:29"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590904278586642432",
        "pages": 8,
        "sha256": "e35a1a4eec057f26",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "cos128u.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cos128u-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "3ebc32ebf9e4b3bf13167770d2b9bcac0dd3a93d1ee1834d5e23cd1f165d4d09",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}