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Ray Set visibility: public 9771e6a 7d ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "lm4927sd",
  "title": "LM4927SD",
  "brief": "Texas Instruments Audio Amplifiers, WSON-8-EP(2x2). 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-comparators",
    "lm4927sd",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LM4927SD",
    "manufacturer": "Texas Instruments",
    "package": "WSON-8-EP(2x2)",
    "pin_count": 9,
    "category": "Amplifiers/Comparators",
    "subcategory": "Audio Amplifiers",
    "datasheet": "https://www.ti.com/cn/lit/gpn/lm4927",
    "parts": {
      "symbol": "lm4927sd.kicad_sym",
      "footprint": "lm4927sd.kicad_mod",
      "model_3d": "lm4927sd-hero.glb",
      "model_3d_plain": "lm4927sd-etched.glb",
      "model_3d_step": "lm4927sd-etched.step",
      "model_3d_step_plain": "lm4927sd.step",
      "lbr": "lm4927sd.lbr"
    },
    "distributor_links": {
      "lcsc": "C2867214",
      "mouser": "926-LM4927SD"
    },
    "distributor_check": {
      "checked_at": "2026-10-21T00:34:57Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": "926-LM4927SD",
        "status": "found",
        "lifecycle": "Obsolete"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "SD",
        "type": "input",
        "description": "Shutdown control: the datasheet states shutdown is enabled by a logic low on this pin, giving an ultra-low shutdown current of 0.1 µA (typ)."
      },
      {
        "number": "2",
        "name": "BYP",
        "type": "passive",
        "description": "Bypass pin for the internal common-mode bias, decoupled externally as shown in the typical application circuit (Figure 1)."
      },
      {
        "number": "3",
        "name": "IN+",
        "type": "input",
        "description": "Positive differential audio input of the fully differential amplifier."
      },
      {
        "number": "4",
        "name": "IN-",
        "type": "input",
        "description": "Negative differential audio input of the fully differential amplifier."
      },
      {
        "number": "5",
        "name": "Vo+",
        "type": "output",
        "description": "Positive differential output driving the speaker load; the datasheet specifies no coupling capacitors are required and the device can drive capacitive loads up to 100 pF."
      },
      {
        "number": "6",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply pin; the operating supply range is 2.4 V to 5.5 V, with an absolute maximum of 6.0 V."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the amplifier and supply."
      },
      {
        "number": "8",
        "name": "Vo-",
        "type": "output",
        "description": "Negative differential output driving the speaker load; the datasheet specifies no output coupling capacitors are required."
      },
      {
        "number": "9",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "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: The connection diagram text on page 2 lists the labels and pin numbers separately (labels SD, BYP, I; The exposed die-attach pad (EP/DAP) on the WSON-8-EP package is not given a pin number or a net conn; The 2x2 mm body size in the package hint is not stated in the provided pages; only the package code "
        ],
        "pages_sent": 6,
        "cost_usd": 0.1333,
        "at": "2026-10-21T00:32:37"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lm4927",
        "pages": 21,
        "sha256": "59053aa2a18e6297",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 9,
        "described": 9,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "7672cac8d88d8679800ef3bf90954e7996ea74e8ddb1f157f2d82bca6b2015e4",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm4927sd-etched.step",
        "role": "eda",
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        "sha256": "40b6d724f262b71dbe18537277701e785a9f42557efbe96e30a983e54294daf1",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "WSON-8-EP(2x2)",
      "Category": "Amplifiers/Comparators",
      "Pins": "9"
    },
    "appearance": {
      "contacts": {
        "quote": "heatsinking. In many cases, larger traces near the output, VDD, and GND pins can be used to lower the θJA. The larger areas of copper provide a form of heatsinking allowing higher power dissipation. F",
        "page": 12,
        "doc": "ds.pdf",
        "material": "copper"
      },
      "version": 1,
      "datasheet_sha256": "59053aa2a18e6297fc033bfe1c21c431b35e63d688585945f3b0077527a0340e"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "59053aa2a18e6297fc033bfe1c21c431b35e63d688585945f3b0077527a0340e",
      "rows": [
        {
          "name": "Quiescent Power Supply Current (VIN = 0V, no load)",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 2.2,
          "max": 4.5,
          "conditions": "VDD = 5V; VIN = 0V, no load",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Power Supply Current (VIN = 0V, RL = 8Ω)",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 2.2,
          "max": 4.5,
          "conditions": "VDD = 5V; VIN = 0V, RL = 8Ω",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Shutdown Current",
          "symbol": "ISD",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.1,
          "max": 1,
          "conditions": "VDD = 5V; VSHUTDOWN = GND",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output Power",
          "symbol": "Po",
          "kind": "electrical",
          "unit": "W",
          "min": 1.2,
          "typ": 1.3,
          "max": null,
          "conditions": "VDD = 5V; THD = 1% (max); f = 1 kHz; RL = 8Ω",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Rejection Ratio",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": 71,
          "typ": 85,
          "max": null,
          "conditions": "VDD = 5V; f = 1kHz; Vripple = 200mV sine p-p; 10Ω terminated input",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Rejection Ratio",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": 90,
          "typ": null,
          "max": null,
          "conditions": "VDD = 5V; f = 217Hz; Vripple = 200mV sine p-p; 10Ω terminated input",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Shutdown Voltage Input High",
          "symbol": "VSDIH",
          "kind": "electrical",
          "unit": "V",
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        },
        {
          "name": "Shutdown Voltage Input Low",
          "symbol": "VSDIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "VDD = 5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Internal Feedback Resistance",
          "symbol": "RF",
          "kind": "electrical",
          "unit": "kΩ",
          "min": 37,
          "typ": 40,
          "max": 47,
          "conditions": "VDD = 5V; Ri = 40kΩ",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Gain",
          "symbol": "AV",
          "kind": "electrical",
          "unit": "dB",
          "min": -0.68,
          "typ": 0,
          "max": 1.4,
          "conditions": "VDD = 5V; Ri = 40kΩ",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Power Supply Current (VIN = 0V, no load)",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 2,
          "max": 4.3,
          "conditions": "VDD = 3V; VIN = 0V, no load",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Power Supply Current (VIN = 0V, RL = 8Ω)",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 2,
          "max": 4.3,
          "conditions": "VDD = 3V; VIN = 0V, RL = 8Ω",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Shutdown Current",
          "symbol": "ISD",
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          "unit": "µA",
          "min": null,
          "typ": 0.1,
          "max": 1,
          "conditions": "VDD = 3V; VSHUTDOWN = GND",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output Offset",
          "symbol": "VOS",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 4,
          "conditions": "VDD = 3V; VIN = 0V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Shutdown Voltage Input High",
          "symbol": "VSDIH",
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          "unit": "V",
          "min": 1.4,
          "typ": null,
          "max": null,
          "conditions": "VDD = 3V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Shutdown Voltage Input Low",
          "symbol": "VSDIL",
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          "unit": "V",
          "min": null,
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          "max": 0.4,
          "conditions": "VDD = 3V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operating Temperature Range",
          "symbol": "TMIN ≤ TA ≤ TMAX",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Supply Voltage",
          "symbol": "VDD",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.4,
          "typ": null,
          "max": 5.5,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Supply Voltage",
          "symbol": "",
          "kind": "absolute_maximum",
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          "min": null,
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          "max": 6,
          "conditions": "",
          "source_page": 3,
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        },
        {
          "name": "Storage Temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
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        },
        {
          "name": "Input Voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "Upper limit printed as VDD + 0.3V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Junction Temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "ESD Susceptibility (Human Body Model)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 2000,
          "conditions": "Human body model, 100pF discharged through 1.5kΩ",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "ESD Susceptibility (Machine Model)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "Machine Model, 220pF–240pF discharged through all pins",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance junction-to-ambient",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 63,
          "max": null,
          "conditions": "Printed as θJA (SD)",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_pitch": "LM4927SD (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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