MCP3911A0-E

{
  "slug": "mcp3911a0-e",
  "version": "0.1.0",
  "type": "component",
  "description": "Microchip Tech Pre-ordered MCUs, QFN-20(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "embedded processors & controllers",
    "mcp3911a0-e",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
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    "docs/mcp3911a0-e-datasheet.pdf",
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  "component": {
    "mpn": "MCP3911A0-E",
    "manufacturer": "Microchip Tech",
    "package": "QFN-20(4x4)",
    "pin_count": 21,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Pre-ordered MCUs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/3764de5c42db125f491ccf89583074ed.pdf",
    "parts": {
      "symbol": "mcp3911a0-e.kicad_sym",
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      "model_3d_step": "mcp3911a0-e-etched.step",
      "model_3d_step_plain": "mcp3911a0-e.step",
      "lbr": "mcp3911a0-e.lbr"
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    "distributor_links": {
      "lcsc": "C637698"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T09:24:40Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "CH0+",
        "type": "input",
        "description": "Noninverting analog input for Channel 0; linear range is ±600 mV/GAIN with VREF = 1.2V, and absolute input is ±1V with no distortion (±2V without damage) relative to AGND."
      },
      {
        "number": "2",
        "name": "CH0-",
        "type": "input",
        "description": "Inverting analog input for Channel 0; linear range is ±600 mV/GAIN with VREF = 1.2V, and absolute input is ±1V with no distortion (±2V without damage) relative to AGND."
      },
      {
        "number": "3",
        "name": "CH1-",
        "type": "input",
        "description": "Inverting analog input for Channel 1; linear range is ±600 mV/GAIN with VREF = 1.2V, and absolute input is ±1V with no distortion (±2V without damage) relative to AGND."
      },
      {
        "number": "4",
        "name": "CH1+",
        "type": "input",
        "description": "Noninverting analog input for Channel 1; linear range is ±600 mV/GAIN with VREF = 1.2V, and absolute input is ±1V with no distortion (±2V without damage) relative to AGND."
      },
      {
        "number": "5",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground, return path for internal analog circuitry; must be connected to the same ground as DGND, preferably with a star connection."
      },
      {
        "number": "6",
        "name": "REFIN+/OUT",
        "type": "bidirectional",
        "description": "Noninverting voltage reference input (external reference when VREFEXT = 1) and internal reference output (when VREFEXT = 0) with minimal drive capability, where a 0.1 µF ceramic capacitor is sufficient."
      },
      {
        "number": "7",
        "name": "REFIN-",
        "type": "input",
        "description": "Inverting voltage reference input, connected to the external VREF- for a differential reference or directly to AGND for a single-ended or internal reference."
      },
      {
        "number": "8",
        "name": "DGND",
        "type": "power_in",
        "description": "Digital ground, return path for internal digital circuitry; must be connected to the same ground as AGND, preferably with a star connection."
      },
      {
        "number": "9",
        "name": "MDAT1",
        "type": "tri_state",
        "description": "Modulator data output for Channel 1, high-impedance when its MODOUT bit is low and otherwise updated at the AMCLK frequency."
      },
      {
        "number": "10",
        "name": "MDAT0",
        "type": "tri_state",
        "description": "Modulator data output for Channel 0, high-impedance when its MODOUT bit is low and otherwise updated at the AMCLK frequency."
      },
      {
        "number": "11",
        "name": "DR",
        "type": "tri_state",
        "description": "Active-low data ready pulse output, high-impedance when DR_HIZ = 0 (default) or driven high when DR_HIZ = 1; a 100 kΩ pull-up to DVDD is recommended when DR_HIZ = 0."
      },
      {
        "number": "12",
        "name": "OSC1/CLKI",
        "type": "input",
        "description": "Oscillator crystal connection or external clock input."
      },
      {
        "number": "13",
        "name": "OSC2",
        "type": "passive",
        "description": "Oscillator crystal connection."
      },
      {
        "number": "14",
        "name": "CS",
        "type": "input",
        "description": "Serial interface chip select input."
      },
      {
        "number": "15",
        "name": "SCK",
        "type": "input",
        "description": "Serial interface clock input (SPI up to 20 MHz)."
      },
      {
        "number": "16",
        "name": "SDO",
        "type": "output",
        "description": "Serial interface data output (the pin table misprints it as 'Data Input')."
      },
      {
        "number": "17",
        "name": "SDI",
        "type": "input",
        "description": "Serial interface data input."
      },
      {
        "number": "18",
        "name": "RESET",
        "type": "input",
        "description": "Active-low Schmitt-triggered master reset input that resets all registers to default and blocks communication while at DGND."
      },
      {
        "number": "19",
        "name": "DVDD",
        "type": "power_in",
        "description": "Digital power supply, to be maintained between 2.7V and 3.6V with appropriate bypass capacitors."
      },
      {
        "number": "20",
        "name": "AVDD",
        "type": "power_in",
        "description": "Analog power supply, to be maintained between 2.7V and 3.6V with appropriate bypass capacitors."
      },
      {
        "number": "21",
        "name": "EP",
        "type": "passive",
        "description": "Exposed thermal pad, must be connected to AGND or left floating."
      }
    ],
    "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",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Datasheet pin table describes SDO (QFN pin 16) as 'Serial Interface Data Input Pin', an apparent typ; The QFN pin column was used because the MPN suffix -E/ML in the marking section indicates the QFN va; OSC2 type chosen as passive (crystal connection); datasheet does not state a direction.",
          "1/21 pins cited to the wrong page (name found elsewhere): ['13:OSC2@p19']"
        ],
        "pages_sent": 13,
        "cost_usd": 0.132,
        "at": "2026-10-23T09:24:30"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/3764de5c42db125f491ccf89583074ed.pdf",
        "pages": 74,
        "sha256": "6aa4f0fb7c0af6d5",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 21,
        "described": 21,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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  }
}