LM4673SD

{
  "slug": "lm4673sd",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Audio Power OpAmps, WSON-8-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "amplifiers",
    "lm4673sd",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm4673sd.kicad_sym",
    "lm4673sd.kicad_mod",
    "lm4673sd.glb",
    "lm4673sd.step",
    "lm4673sd.lbr",
    "docs/hero.png",
    "docs/lm4673sd-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lm4673sd-hero.glb",
    "lm4673sd-hero.overlay.json",
    "lm4673sd-etched.glb"
  ],
  "component": {
    "mpn": "LM4673SD",
    "manufacturer": "Texas Instruments",
    "package": "WSON-8-EP(3x3)",
    "pin_count": 9,
    "category": "Amplifiers",
    "subcategory": "Audio Power OpAmps",
    "datasheet": "https://www.ti.com/lit/ds/symlink/lm4673sd.pdf",
    "parts": {
      "symbol": "lm4673sd.kicad_sym",
      "footprint": "lm4673sd.kicad_mod",
      "model_3d": "lm4673sd-hero.glb",
      "model_3d_plain": "lm4673sd-etched.glb",
      "model_3d_step": "lm4673sd-etched.step",
      "model_3d_step_plain": "lm4673sd.step",
      "lbr": "lm4673sd.lbr"
    },
    "distributor_links": {
      "lcsc": "C201534"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T23:15:43Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 613 calls left today"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "IN+",
        "type": "input",
        "description": "Non-inverting differential audio input, with gain set by external Ri (AV = 2*150kΩ/Ri)."
      },
      {
        "number": "2",
        "name": "IN-",
        "type": "input",
        "description": "Inverting differential audio input, with gain set by external Ri (AV = 2*150kΩ/Ri)."
      },
      {
        "number": "3",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply voltage pin for 2.4V to 5.5V operation, bypassed with a 4.7µF capacitor placed close to the device."
      },
      {
        "number": "4",
        "name": "SHDN",
        "type": "input",
        "description": "Active-low shutdown input (logic high min 1.4V, logic low max 0.4V) with internal 300kΩ resistor to GND, so floating enters shutdown."
      },
      {
        "number": "5",
        "name": "VO1",
        "type": "output",
        "description": "Class D differential speaker output 1, switching at 300kHz between VDD and GND."
      },
      {
        "number": "6",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin."
      },
      {
        "number": "7",
        "name": "PVDD",
        "type": "power_in",
        "description": "Power supply for the output stage, connected to the same 2.4V to 5.5V supply as VDD."
      },
      {
        "number": "8",
        "name": "VO2",
        "type": "output",
        "description": "Class D differential speaker output 2, switching at 300kHz between VDD and GND."
      },
      {
        "number": "9",
        "name": "EP",
        "type": "passive",
        "description": "Exposed thermal pad that must be soldered to the PCB for thermal and mechanical performance; the datasheet does not state its net."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet does not say which net the exposed pad (pin 9) connects to. The package drawing only s; The WSON connection diagram shows no separate PGND pin. GND on pin 6 serves as the only ground pin, ",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 30,
        "cost_usd": 0.7228,
        "at": "2026-10-22T23:15:34"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/lm4673sd.pdf",
        "pages": 30,
        "sha256": "0345b49ca3f5f539",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 9,
        "described": 9,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
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        "role": "plain",
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "cbee016fb8ee69c44b13d8818fcf65dcf240f5fdca70b22700521eb617c5311a",
        "checked": "2026-10-22",
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      },
      {
        "file": "lm4673sd-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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        "sha256": "5faa8e99726fee869921e5642bf3207998ed5151ce3dd4aaa802d9ec0faa98b4",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  }
}