COS8221ARZ

{
  "schema_version": 1,
  "type": "component",
  "slug": "cos8221arz",
  "title": "COS8221ARZ",
  "brief": "COSINE Instrumentation Amplifiers, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "amplifiers-comparators",
    "cos8221arz"
  ],
  "component": {
    "mpn": "COS8221ARZ",
    "manufacturer": "COSINE",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Amplifiers/Comparators",
    "subcategory": "Instrumentation Amplifiers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590234192907960320",
    "parts": {
      "symbol": "cos8221arz.kicad_sym",
      "footprint": "cos8221arz.kicad_mod",
      "model_3d": "cos8221arz-etched.glb",
      "model_3d_plain": "cos8221arz.glb",
      "model_3d_step": "cos8221arz-etched.step",
      "model_3d_step_plain": "cos8221arz.step",
      "lbr": "cos8221arz.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "VIN-",
        "type": "input",
        "description": "Negative (inverting) analog input to the instrumentation amplifier. Input terminals are diode-clamped to the supply rails; signals swinging more than 0.5V beyond the rails should be current-limited to <=10mA. Common-mode voltage range: -Vs+1.9V to +Vs-1.2V."
      },
      {
        "number": "2",
        "name": "RG",
        "type": "passive",
        "description": "Gain-setting pin. Connect an external gain resistor RG between pins 2 and 3 to set gain per G = 1 + 49.4kΩ/RG. Leave open (NC) for unity gain."
      },
      {
        "number": "3",
        "name": "RG",
        "type": "passive",
        "description": "Gain-setting pin. Connect an external gain resistor RG between pins 2 and 3 to set gain per G = 1 + 49.4kΩ/RG. Leave open (NC) for unity gain."
      },
      {
        "number": "4",
        "name": "VIN+",
        "type": "input",
        "description": "Positive (non-inverting) analog input to the instrumentation amplifier. Input terminals are diode-clamped to the supply rails; signals swinging more than 0.5V beyond the rails should be current-limited to <=10mA. Common-mode voltage range: -Vs+1.9V to +Vs-1.2V."
      },
      {
        "number": "5",
        "name": "-VS",
        "type": "power_in",
        "description": "Negative supply rail. Operating range -2.25V to -18V (dual-supply operation) or ground for single-supply operation. Bypass to ground with a 0.1µF ceramic capacitor placed close to the pin."
      },
      {
        "number": "6",
        "name": "REF",
        "type": "input",
        "description": "Output-stage reference input; sets the output DC level. Must be driven by a low-impedance source (or tied to ground) to preserve CMRR; ~8Ω of series resistance degrades CMR to ~80dB."
      },
      {
        "number": "7",
        "name": "VOUT",
        "type": "output",
        "description": "Amplifier output. Output swing extends to +Vs-1.1V (high) and -Vs+0.9V (low); rated output current ±10mA (short-circuit current typ ±24mA)."
      },
      {
        "number": "8",
        "name": "+VS",
        "type": "power_in",
        "description": "Positive supply rail. Operating range +2.25V to +18V (dual-supply) or +4.5V to +36V (single-supply). Bypass with a 0.1µF ceramic capacitor placed close to the pin; a 2.2µF tantalum may be added for improved performance."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590234192907960320",
        "pages": 8,
        "sha256": "0e71b764a438c162",
        "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": "cos8221arz.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cos8221arz-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "f7ed5ac22cfe78470a61dbfa1c16f4ba4e98dd37a9b72ddee73c0eacdfdb1f56",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "COSINE",
      "Package": "SOP-8",
      "Category": "Amplifiers/Comparators",
      "Pins": "8"
    }
  },
  "variants": [
    {
      "mpn": "COS8221ARZ",
      "kind": "packaging"
    },
    {
      "mpn": "COS8221BRZ",
      "kind": "unknown"
    },
    {
      "mpn": "COS8221MR",
      "kind": "unknown"
    },
    {
      "mpn": "COS8221DT",
      "kind": "unknown"
    }
  ],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "cos8221arz"
  ],
  "discovery_pitch": "COS8221ARZ (COSINE) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cos8221arz.kicad_sym",
    "cos8221arz.kicad_mod",
    "cos8221arz.glb",
    "cos8221arz.step",
    "cos8221arz.lbr",
    "docs/hero.png",
    "docs/cos8221arz-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T19:30:15.723Z"
}