ZJC2105-16ATPER

{
  "slug": "zjc2105-16atper",
  "version": "0.1.0",
  "type": "component",
  "description": "ZJW Analog To Digital Converters (ADCs), QFN-20(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "adc-dac-data conversion",
    "zjc2105-16atper",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
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    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
    "zjc2105-16atper.kicad_sym",
    "zjc2105-16atper.kicad_mod",
    "zjc2105-16atper.glb",
    "zjc2105-16atper.step",
    "zjc2105-16atper.lbr",
    "docs/hero.png",
    "docs/zjc2105-16atper-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "zjc2105-16atper-hero.glb",
    "zjc2105-16atper-hero.overlay.json",
    "zjc2105-16atper-etched.glb"
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  "component": {
    "mpn": "ZJC2105-16ATPER",
    "manufacturer": "ZJW",
    "package": "QFN-20(4x4)",
    "pin_count": 21,
    "category": "ADC/DAC/Data Conversion",
    "subcategory": "Analog To Digital Converters (ADCs)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/6a92ea75e0919277db0d40e84f28f56e.pdf",
    "parts": {
      "symbol": "zjc2105-16atper.kicad_sym",
      "footprint": "zjc2105-16atper.kicad_mod",
      "model_3d": "zjc2105-16atper-hero.glb",
      "model_3d_plain": "zjc2105-16atper-etched.glb",
      "model_3d_step": "zjc2105-16atper-etched.step",
      "model_3d_step_plain": "zjc2105-16atper.step",
      "lbr": "zjc2105-16atper.lbr"
    },
    "distributor_links": {
      "lcsc": "C20627311"
    },
    "distributor_check": {
      "checked_at": "2026-10-26T23:38:42Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VDD",
        "type": "power_in",
        "description": "Power supply, nominally 2.3 V to 5.5 V with an external reference, decoupled with 10 μF and 100 nF capacitors; minimum VDD is 3.0 V for the 2.5 V internal reference and 4.5 V for the 4.096 V internal reference."
      },
      {
        "number": "2",
        "name": "REF",
        "type": "bidirectional",
        "description": "External reference input or internal reference buffer output, selectable 2.5 V or 4.096 V, requiring a 10 μF decoupling capacitor close to the pin."
      },
      {
        "number": "3",
        "name": "REFIN",
        "type": "bidirectional",
        "description": "Internal reference output (0.1 μF decoupling) or external reference buffer input, accepting 0.5 V to 4.096 V."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Power supply ground."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Power supply ground."
      },
      {
        "number": "6",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection on the ZJC2105-16; recommended to be connected to GND."
      },
      {
        "number": "7",
        "name": "IN2",
        "type": "input",
        "description": "Analog input channel 2 on the ZJC2105-16."
      },
      {
        "number": "8",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection on the ZJC2105-16; recommended to be connected to GND."
      },
      {
        "number": "9",
        "name": "IN3",
        "type": "input",
        "description": "Analog input channel 3 on the ZJC2105-16."
      },
      {
        "number": "10",
        "name": "COM",
        "type": "input",
        "description": "Common channel input, which all input channels can be referenced to a common-mode point of 0 V or VREF / 2."
      },
      {
        "number": "11",
        "name": "CNV",
        "type": "input",
        "description": "Convert input; a rising edge initiates the conversion, and the busy indicator is enabled while CNV is high during conversion."
      },
      {
        "number": "12",
        "name": "DIN",
        "type": "input",
        "description": "Serial data input used for writing the 14-bit configuration register."
      },
      {
        "number": "13",
        "name": "SCK",
        "type": "input",
        "description": "Serial clock input that clocks data out on SDO and in on DIN, MSB first."
      },
      {
        "number": "14",
        "name": "SDO",
        "type": "output",
        "description": "Serial data output carrying conversion codes clocked by SCK; straight binary in unipolar modes and twos complement in bipolar modes."
      },
      {
        "number": "15",
        "name": "VIO",
        "type": "power_in",
        "description": "Digital interface power supply, nominally set to the same supply as the host interface."
      },
      {
        "number": "16",
        "name": "IN0",
        "type": "input",
        "description": "Analog input channel 0."
      },
      {
        "number": "17",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection on the ZJC2105-16; recommended to be connected to GND."
      },
      {
        "number": "18",
        "name": "IN1",
        "type": "input",
        "description": "Analog input channel 1 on the ZJC2105-16."
      },
      {
        "number": "19",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection on the ZJC2105-16; recommended to be connected to GND."
      },
      {
        "number": "20",
        "name": "VDD",
        "type": "power_in",
        "description": "Power supply, nominally 2.3 V to 5.5 V, same supply as pin 1."
      },
      {
        "number": "21",
        "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 MPN ZJC2105-16ATPER maps to the ZJC2105-16 variant (Figure 4, NC pins recommended to GND), so th"
        ],
        "pages_sent": 8,
        "cost_usd": 0.0184,
        "at": "2026-10-26T23:38:32"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/6a92ea75e0919277db0d40e84f28f56e.pdf",
        "pages": 36,
        "sha256": "075123bbcdfabf35",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 21,
        "described": 21,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "file": "zjc2105-16atper.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.0,
          4.0,
          0.77
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "c9476a1612023de37f27b4972110ab6ac6dc0eaf5ac48957a2e1c497650082a5",
        "checked": "2026-10-26",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "zjc2105-16atper-etched.step",
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        "zmin_mm": 0.0,
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        "footprint_binding": "identity",
        "sha256": "61588fd49d017f30000aa03b6727c607943915a85c8344fe4b7441147fc2b686",
        "checked": "2026-10-26",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}