CM2219-QFNTR

{
  "schema_version": 1,
  "type": "component",
  "slug": "cm2219-qfntr",
  "title": "CM2219-QFNTR",
  "brief": "CIMO Analog To Digital Converters (ADC), QFN-20-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "data acquisition",
    "cm2219-qfntr",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "CM2219-QFNTR",
    "manufacturer": "CIMO",
    "package": "QFN-20-EP(4x4)",
    "pin_count": 21,
    "category": "Data Acquisition",
    "subcategory": "Analog To Digital Converters (ADC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8604438098956861440",
    "parts": {
      "symbol": "cm2219-qfntr.kicad_sym",
      "footprint": "cm2219-qfntr.kicad_mod",
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      "model_3d_step": "cm2219-qfntr-etched.step",
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      "lbr": "cm2219-qfntr.lbr"
    },
    "distributor_links": {
      "lcsc": "C42382207"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T06:39:57Z",
      "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, typically 4.5 V to 5.5 V; decouple with 10 μF and 100 nF capacitors."
      },
      {
        "number": "2",
        "name": "REF",
        "type": "bidirectional",
        "description": "Reference input/output: outputs 4.096 V when the internal reference is enabled, buffers REFIN (max VDD-0.5 V) when the buffer is enabled, or accepts an external reference of 0.5 V to VDD; must be decoupled with 10 μF placed as close to the pin as possible."
      },
      {
        "number": "3",
        "name": "REFIN",
        "type": "bidirectional",
        "description": "Internal unbuffered reference output when the internal reference is used (decouple with 0.1 μF), or external reference input of 0.5 V to 4.096 V that is buffered out on REF."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "6",
        "name": "IN4",
        "type": "passive",
        "description": "Analog input channel 4; in unipolar mode the positive input must stay between -0.1 V and VREF+0.1 V."
      },
      {
        "number": "7",
        "name": "IN5",
        "type": "passive",
        "description": "Analog input channel 5; in unipolar mode the positive input must stay between -0.1 V and VREF+0.1 V."
      },
      {
        "number": "8",
        "name": "IN6",
        "type": "passive",
        "description": "Analog input channel 6; in unipolar mode the positive input must stay between -0.1 V and VREF+0.1 V."
      },
      {
        "number": "9",
        "name": "IN7",
        "type": "passive",
        "description": "Analog input channel 7; in unipolar mode the positive input must stay between -0.1 V and VREF+0.1 V."
      },
      {
        "number": "10",
        "name": "COM",
        "type": "passive",
        "description": "Common input to which all IN[7:0] can be referenced; connect to 0 V or VREF/2, with COM limited to 0.1 V of ground (unipolar) or VREF/2 ±0.1 V (pseudo-bipolar)."
      },
      {
        "number": "11",
        "name": "CNV",
        "type": "input",
        "description": "Conversion input: a rising edge starts a conversion, and low level enables the SDO output as chip select."
      },
      {
        "number": "12",
        "name": "DIN",
        "type": "input",
        "description": "SPI serial data input used to write the 14-bit configuration register, sampled on SCK rising edges."
      },
      {
        "number": "13",
        "name": "SCK",
        "type": "input",
        "description": "SPI serial clock input."
      },
      {
        "number": "14",
        "name": "SDO",
        "type": "output",
        "description": "SPI serial data output; forced to high impedance when CNV is high."
      },
      {
        "number": "15",
        "name": "VIO",
        "type": "power_in",
        "description": "Digital interface supply, normally the same as the host interface supply (1.8 V, 2.5 V, 3 V or 5 V); electrical specification allows 1.8 V to VDD+0.3 V."
      },
      {
        "number": "16",
        "name": "IN0",
        "type": "passive",
        "description": "Analog input channel 0; in unipolar mode the positive input must stay between -0.1 V and VREF+0.1 V."
      },
      {
        "number": "17",
        "name": "IN1",
        "type": "passive",
        "description": "Analog input channel 1; in unipolar mode the positive input must stay between -0.1 V and VREF+0.1 V."
      },
      {
        "number": "18",
        "name": "IN2",
        "type": "passive",
        "description": "Analog input channel 2; in unipolar mode the positive input must stay between -0.1 V and VREF+0.1 V."
      },
      {
        "number": "19",
        "name": "IN3",
        "type": "passive",
        "description": "Analog input channel 3; in unipolar mode the positive input must stay between -0.1 V and VREF+0.1 V."
      },
      {
        "number": "20",
        "name": "VDD",
        "type": "power_in",
        "description": "Power supply, typically 4.5 V to 5.5 V; decouple with 10 μF and 100 nF capacitors."
      },
      {
        "number": "21",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
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        "primary_model": "claude-haiku-5-5",
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        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "exposed pad 21 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
        ],
        "pages_sent": 29,
        "cost_usd": 0.1189,
        "at": "2026-10-18T06:37:38"
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      "datasheet": {
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        "sha256": "fccccf31d7653135",
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 21,
        "described": 21,
        "cites_pages": true,
        "refuses_to_fabricate": true
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    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
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    "models_3d": [
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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  "metadata": {
    "specs": {
      "Manufacturer": "CIMO",
      "Package": "QFN-20-EP(4x4)",
      "Category": "Data Acquisition",
      "Pins": "21"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
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      "rows": [
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          "name": "Operating temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
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        {
          "name": "Storage temperature",
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          "name": "Junction temperature",
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          "name": "Lead-free soldering temperature",
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        {
          "name": "VDD to GND",
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        {
          "name": "VDD to VIO",
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        {
          "name": "DIN, CNV, SCK, SDO to GND",
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          "conditions": "Upper limit printed as VIO+0.3",
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        },
        {
          "name": "ESD HBM",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
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          "max": 5000,
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        {
          "name": "ESD CDM",
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        {
          "name": "Full-bandwidth conversion rate",
          "symbol": "",
          "kind": "electrical",
          "unit": "kSPS",
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          "max": 500,
          "conditions": "Full bandwidth",
          "source_page": 9,
          "source": "datasheet"
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        {
          "name": "1/4-bandwidth conversion rate",
          "symbol": "",
          "kind": "electrical",
          "unit": "kSPS",
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          "name": "INL",
          "symbol": "INL",
          "kind": "electrical",
          "unit": "LSB",
          "min": -2.5,
          "typ": 0.6,
          "max": 2.5,
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        {
          "name": "DNL",
          "symbol": "DNL",
          "kind": "electrical",
          "unit": "LSB",
          "min": -1,
          "typ": 0.4,
          "max": 1,
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          "source_page": 9,
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        {
          "name": "Gain error, all modes",
          "symbol": "",
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          "unit": "LSB",
          "min": -4,
          "typ": 0.5,
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          "conditions": "All modes",
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          "name": "Gain error matching",
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        {
          "name": "Gain error temperature drift",
          "symbol": "",
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          "unit": "ppm/℃",
          "min": -0.5,
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          "name": "Offset error, all modes",
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          "name": "Offset error matching",
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          "name": "Offset error temperature drift",
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          "min": -0.3,
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        {
          "name": "Internal reference REF output voltage",
          "symbol": "REF",
          "kind": "electrical",
          "unit": "V",
          "min": 4.086,
          "typ": 4.096,
          "max": 4.106,
          "conditions": "TA = 25°C",
          "source_page": 9,
          "source": "datasheet"
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        {
          "name": "Internal reference REF output current",
          "symbol": "REF",
          "kind": "electrical",
          "unit": "μA",
          "min": -300,
          "typ": null,
          "max": 300,
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          "source_page": 9,
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        {
          "name": "Internal reference temperature drift",
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        {
          "name": "External reference voltage range, REF input",
          "symbol": "REF",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0.5,
          "typ": null,
          "max": null,
          "conditions": "Upper limit printed as VDD+0.3",
          "source_page": 9,
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        {
          "name": "External reference voltage range, REFIN input (buffered)",
          "symbol": "REFIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0.5,
          "typ": null,
          "max": null,
          "conditions": "Upper limit printed as VDD-0.2",
          "source_page": 9,
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        {
          "name": "Unipolar analog input voltage range",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 0,
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          "max": null,
          "conditions": "Unipolar mode; upper limit printed as VREF",
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          "name": "Absolute positive input voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": -0.1,
          "typ": null,
          "max": null,
          "conditions": "Positive input, unipolar and pseudo-bipolar modes; upper limit printed as VREF+0.1",
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          "name": "Absolute negative input or COM voltage",
          "symbol": "",
          "kind": "electrical",
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          "typ": null,
          "max": 0.1,
          "conditions": "Negative input or COM input, unipolar mode",
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          "source": "datasheet"
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        {
          "name": "Supply voltage VDD",
          "symbol": "VDD",
          "kind": "recommended_operating",
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          "min": 4.5,
          "typ": null,
          "max": 5.5,
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          "source_page": 9,
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        {
          "name": "Digital interface supply VIO",
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          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.8,
          "typ": null,
          "max": null,
          "conditions": "Upper limit printed as VDD+0.3",
          "source_page": 10,
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        {
          "name": "Digital input low voltage",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "Upper limit printed as 0.3VIO",
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          "source": "datasheet"
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          "name": "Digital output low voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
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          "max": 0.4,
          "conditions": "ISINK = 500μA",
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          "name": "Input leakage current low",
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          "kind": "electrical",
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          "max": 1,
          "conditions": "",
          "source_page": 10,
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          "name": "Input leakage current high",
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          "kind": "electrical",
          "unit": "μA",
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          "typ": null,
          "max": 1,
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          "source_page": 10,
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          "name": "Power dissipation, 500 kSPS, external reference",
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          "conditions": "VDD = 5V, 500kSPS",
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          "name": "Power dissipation, 500 kSPS, internal reference",
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          "conditions": "VDD = 5V, 500kSPS, internal reference",
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          "name": "SCLK falling edge data hold time",
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          "typ": 10.5,
          "max": 15.4,
          "conditions": "VIO = 5.5V",
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          "name": "SCLK falling edge to data valid",
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          "min": 9.2,
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          "max": 18,
          "conditions": "VIO = 3.3V",
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          "name": "SCLK falling edge to data valid",
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          "max": 29,
          "conditions": "VIO = 1.8V",
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        {
          "name": "CNV low to SDO MSB valid",
          "symbol": "tEN",
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          "min": 10.1,
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          "conditions": "VIO = 5.5V",
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          "name": "CNV low to SDO MSB valid",
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          "name": "CNV low to SDO MSB valid",
          "symbol": "tEN",
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          "conditions": "VIO = 1.8V",
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          "source": "datasheet"
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        {
          "name": "CNV high or last SCLK falling edge to SDO high-Z",
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  ],
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  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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  "visibility": {
    "public": true
  }
}