main
Ray Set visibility: public d23d093 11d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "lm4673sd",
  "title": "LM4673SD",
  "brief": "Texas Instruments Audio Power OpAmps, WSON-8-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "amplifiers",
    "lm4673sd",
    "factory-2.0.0",
    "extractor-text"
  ],
  "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": {
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        "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",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "cbee016fb8ee69c44b13d8818fcf65dcf240f5fdca70b22700521eb617c5311a",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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        "file": "lm4673sd-etched.step",
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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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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "WSON-8-EP(3x3)",
      "Category": "Amplifiers",
      "Pins": "9"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "0345b49ca3f5f539d964d73d963a4ffba85040acc2d4aad087a2281252a3df41",
      "rows": [
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          "name": "Differential Output Offset Voltage",
          "symbol": "VOS",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 5,
          "max": null,
          "conditions": "VI = 0V, AV = 2V/V, VDD = 2.4V to 5.0V",
          "source_page": 4,
          "source": "datasheet"
        },
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          "name": "Logic High Input Current",
          "symbol": "IIH",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 17,
          "max": 100,
          "conditions": "VDD = 5.0V, VI = 5.5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Logic Low Input Current",
          "symbol": "IIL",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 0.9,
          "max": 5,
          "conditions": "VDD = 5.0V, VI = –0.3V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Power Supply Current",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 2.6,
          "max": 3.75,
          "conditions": "VIN = 0V, No Load, VDD = 5.0V",
          "source_page": 4,
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        },
        {
          "name": "Quiescent Power Supply Current",
          "symbol": "IDD",
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          "min": null,
          "typ": 2.1,
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          "symbol": "IDD",
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          "min": null,
          "typ": 1.7,
          "max": 2.3,
          "conditions": "VIN = 0V, No Load, VDD = 2.4V",
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          "name": "Shutdown Current",
          "symbol": "ISD",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 0.01,
          "max": 1,
          "conditions": "VSHUTDOWN = 0V, VDD = 2.4V to 5.0V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Shutdown voltage input high",
          "symbol": "VSDIH",
          "kind": "electrical",
          "unit": "V",
          "min": 1.4,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Shutdown voltage input low",
          "symbol": "VSDIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output Power (1% THD, 8Ω, 3.6V)",
          "symbol": "PO",
          "kind": "electrical",
          "unit": "mW",
          "min": 600,
          "typ": 650,
          "max": null,
          "conditions": "RL = 15μH + 8Ω + 15μH, THD = 1%, f = 1kHz, 22kHz BW, VDD = 3.6V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Supply Voltage (absolute maximum)",
          "symbol": "VDD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Junction Temperature",
          "symbol": "TJMAX",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "ESD Susceptibility, all other pins",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "Human body model, 100pF, 1.5kΩ",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "ESD Susceptibility",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "Machine Model, 220pF–240pF",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating Temperature",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "TMIN ≤ TA ≤ TMAX",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "Supply Voltage",
          "symbol": "VDD",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.4,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance Junction-to-Ambient (WSON)",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 73,
          "max": null,
          "conditions": "WSON",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Impedance in shutdown",
          "symbol": "ROSD",
          "kind": "electrical",
          "unit": "kΩ",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "VSHUTDOWN = 0.4V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Resistance from Shutdown Pin to GND",
          "symbol": "RSD",
          "kind": "electrical",
          "unit": "kΩ",
          "min": null,
          "typ": 300,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Rejection Ratio",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 78,
          "max": null,
          "conditions": "VRipple = 200mVPP, fRipple = 217Hz, VDD = 3.6, 5V, CI = 2μF",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Wake-up Time",
          "symbol": "TWU",
          "kind": "timing",
          "unit": "μs",
          "min": null,
          "typ": 17,
          "max": null,
          "conditions": "VDD = 3.6V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Shutdown Time",
          "symbol": "TSD",
          "kind": "timing",
          "unit": "μs",
          "min": null,
          "typ": 140,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_triggers": [
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  "discovery_pitch": "LM4673SD (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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