ADS7138QRTERQ1

{
  "schema_version": 1,
  "type": "component",
  "slug": "ads7138qrterq1",
  "title": "ADS7138QRTERQ1",
  "brief": "Texas Instruments Analog To Digital Converters (ADCs), WQFN-16(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",
    "adc-dac-data conversion",
    "ads7138qrterq1",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "ADS7138QRTERQ1",
    "manufacturer": "Texas Instruments",
    "package": "WQFN-16(3x3)",
    "pin_count": 17,
    "category": "ADC/DAC/Data Conversion",
    "subcategory": "Analog To Digital Converters (ADCs)",
    "datasheet": "https://www.ti.com/lit/ds/symlink/ads7138-q1.pdf",
    "parts": {
      "symbol": "ads7138qrterq1.kicad_sym",
      "footprint": "ads7138qrterq1.kicad_mod",
      "model_3d": "ads7138qrterq1-hero.glb",
      "model_3d_plain": "ads7138qrterq1-etched.glb",
      "model_3d_step": "ads7138qrterq1-etched.step",
      "model_3d_step_plain": "ads7138qrterq1.step",
      "lbr": "ads7138qrterq1.lbr"
    },
    "distributor_links": {
      "lcsc": "C5215158"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T18:31:39Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 870 calls left today"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "AIN2/GPIO2",
        "type": "bidirectional",
        "description": "Channel 2; configurable as either an analog input (default) or a GPIO."
      },
      {
        "number": "2",
        "name": "AIN3/GPIO3",
        "type": "bidirectional",
        "description": "Channel 3; configurable as either an analog input (default) or a GPIO."
      },
      {
        "number": "3",
        "name": "AIN4/GPIO4",
        "type": "bidirectional",
        "description": "Channel 4; configurable as either an analog input (default) or a GPIO."
      },
      {
        "number": "4",
        "name": "AIN5/GPIO5",
        "type": "bidirectional",
        "description": "Channel 5; configurable as either an analog input (default) or a GPIO."
      },
      {
        "number": "5",
        "name": "AIN6/GPIO6",
        "type": "bidirectional",
        "description": "Channel 6; configurable as either an analog input (default) or a GPIO."
      },
      {
        "number": "6",
        "name": "AIN7/GPIO7",
        "type": "bidirectional",
        "description": "Channel 7; configurable as either an analog input (default) or a GPIO."
      },
      {
        "number": "7",
        "name": "AVDD",
        "type": "power_in",
        "description": "Analog supply input (2.35 V to 5.5 V), also used as the ADC reference voltage; connect a 1-µF decoupling capacitor to GND."
      },
      {
        "number": "8",
        "name": "DECAP",
        "type": "passive",
        "description": "Connect a 1-µF decoupling capacitor between DECAP and GND for the internal power supply."
      },
      {
        "number": "9",
        "name": "GND",
        "type": "power_in",
        "description": "Ground for the power supply; all analog and digital signals are referred to this pin voltage."
      },
      {
        "number": "10",
        "name": "DVDD",
        "type": "power_in",
        "description": "Digital I/O supply voltage (1.65 V to 5.5 V); connect a 1-µF decoupling capacitor to GND."
      },
      {
        "number": "11",
        "name": "ADDR",
        "type": "input",
        "description": "Input for selecting the device I2C address; connect a resistor from DECAP or GND to select one of eight addresses."
      },
      {
        "number": "12",
        "name": "ALERT",
        "type": "output",
        "description": "Open-drain (default) or push-pull output for the digital comparator."
      },
      {
        "number": "13",
        "name": "SCL",
        "type": "input",
        "description": "Serial clock for the I2C interface."
      },
      {
        "number": "14",
        "name": "SDA",
        "type": "bidirectional",
        "description": "Serial data input or output for the I2C interface."
      },
      {
        "number": "15",
        "name": "AIN0/GPIO0",
        "type": "bidirectional",
        "description": "Channel 0; configurable as either an analog input (default) or a general-purpose input/output (GPIO)."
      },
      {
        "number": "16",
        "name": "AIN1/GPIO1",
        "type": "bidirectional",
        "description": "Channel 1; configurable as either an analog input (default) or a GPIO."
      },
      {
        "number": "17",
        "name": "Thermal pad",
        "type": "power_in",
        "description": "Exposed thermal pad; connect to GND."
      }
    ],
    "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: The datasheet lists the thermal pad with number '—' (no pin number). I labeled it '17' as a placehol; The datasheet's DECAP function is 'Supply', but it is a decoupling-capacitor node, not a supply inpu"
        ],
        "pages_sent": 12,
        "cost_usd": 0.118,
        "at": "2026-10-23T18:31:25"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/ads7138-q1.pdf",
        "pages": 90,
        "sha256": "de71831192632278",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 17,
        "described": 17,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
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        "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": "3eb81ffac423a66cdcfead8efe56401da171edaf1f2257049aad7b2d3900f6c8",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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      {
        "file": "ads7138qrterq1-etched.step",
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "centre_offset_mm": 0,
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        "sha256": "1665e0e5b8a1d90955b8b43f6d7f67ddfea771d5e945228b5e01728dad24f6c5",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "WQFN-16(3x3)",
      "Category": "ADC/DAC/Data Conversion",
      "Pins": "17"
    },
    "appearance": {
      "contacts": {
        "quote": "voltage for the ADS7138-Q1. Place the decoupling capacitor for AVDD close to the device AVDD and GND pins and connect the decoupling capacitor to the device pins with thick copper tracks.",
        "page": 80,
        "doc": "ds.pdf",
        "material": "copper"
      },
      "version": 1,
      "datasheet_sha256": "de718311926322780dca10250a08a3fa8d6bc7808ee267b29041c387ececd1a3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "de718311926322780dca10250a08a3fa8d6bc7808ee267b29041c387ececd1a3",
      "rows": [
        {
          "name": "DVDD to GND",
          "symbol": "DVDD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "AVDD to GND",
          "symbol": "AVDD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "ADDR pin voltage",
          "symbol": "ADDR",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 2.1,
          "conditions": "min is GND – 0.3",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Digital inputs",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 5.5,
          "conditions": "min is GND – 0.3",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Current through any pin except supply pins, SCL, and SDA",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -10,
          "typ": null,
          "max": 10,
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        },
        {
          "name": "Junction temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -60,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "ESD HBM",
          "symbol": "V(ESD)",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -2000,
          "typ": null,
          "max": 2000,
          "conditions": "Human-body model, AEC Q100-002",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "ESD CDM corner pins",
          "symbol": "V(ESD)",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -750,
          "typ": null,
          "max": 750,
          "conditions": "AEC Q100-011; corner pins (1, 4, 5, 8, 9, 12, 13, 16)",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "ESD CDM other pins",
          "symbol": "V(ESD)",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -500,
          "typ": null,
          "max": 500,
          "conditions": "AEC Q100-011; all other pins",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Analog supply voltage",
          "symbol": "AVDD",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.35,
          "typ": 3.3,
          "max": 5.5,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Digital supply voltage",
          "symbol": "DVDD",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.65,
          "typ": 3.3,
          "max": 5.5,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Full-scale input range",
          "symbol": "FSR",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "AINx – GND; max is AVDD",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Absolute input voltage",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": -0.1,
          "typ": null,
          "max": null,
          "conditions": "AINx – GND; max is AVDD + 0.1",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Ambient temperature",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "℃",
          "min": -40,
          "typ": 25,
          "max": 125,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-ambient thermal resistance",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 49.7,
          "max": null,
          "conditions": "RTE (WQFN) 16 pins",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-case (top) thermal resistance",
          "symbol": "RθJC(top)",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 53.4,
          "max": null,
          "conditions": "RTE (WQFN) 16 pins",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-board thermal resistance",
          "symbol": "RθJB",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 24.7,
          "max": null,
          "conditions": "RTE (WQFN) 16 pins",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-top characterization parameter",
          "symbol": "ΨJT",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 1.3,
          "max": null,
          "conditions": "RTE (WQFN) 16 pins",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-board characterization parameter",
          "symbol": "ΨJB",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 24.7,
          "max": null,
          "conditions": "RTE (WQFN) 16 pins",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-case (bottom) thermal resistance",
          "symbol": "RθJC(bot)",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 9.3,
          "max": null,
          "conditions": "RTE (WQFN) 16 pins",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Differential nonlinearity",
          "symbol": "DNL",
          "kind": "electrical",
          "unit": "LSB",
          "min": -0.75,
          "typ": 0.2,
          "max": 0.75,
          "conditions": "typ printed ±0.2",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Integral nonlinearity",
          "symbol": "INL",
          "kind": "electrical",
          "unit": "LSB",
          "min": -1.5,
          "typ": 0.45,
          "max": 1.5,
          "conditions": "typ printed ±0.45",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Input offset error",
          "symbol": "V(OS)",
          "kind": "electrical",
          "unit": "LSB",
          "min": -2,
          "typ": 0.4,
          "max": 2,
          "conditions": "Post offset calibration; typ printed ±0.4",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Gain error",
          "symbol": "GE",
          "kind": "electrical",
          "unit": "%FSR",
          "min": -0.065,
          "typ": 0.025,
          "max": 0.065,
          "conditions": "typ printed ±0.025",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Input offset thermal drift",
          "symbol": "",
          "kind": "temperature_coefficient",
          "unit": "ppm/°C",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "Post offset calibration; typ printed ±1",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Gain error thermal drift",
          "symbol": "",
          "kind": "temperature_coefficient",
          "unit": "ppm/°C",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "typ printed ±1",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "SINAD",
          "symbol": "SINAD",
          "kind": "electrical",
          "unit": "dB",
          "min": 70,
          "typ": 72.8,
          "max": null,
          "conditions": "AVDD = 5 V, fIN = 2 kHz",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "SINAD",
          "symbol": "SINAD",
          "kind": "electrical",
          "unit": "dB",
          "min": 69.8,
          "typ": 72.4,
          "max": null,
          "conditions": "AVDD = 3 V, fIN = 2 kHz",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "SNR",
          "symbol": "SNR",
          "kind": "electrical",
          "unit": "dB",
          "min": 71.2,
          "typ": 73,
          "max": null,
          "conditions": "AVDD = 5 V, fIN = 2 kHz",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "SNR",
          "symbol": "SNR",
          "kind": "electrical",
          "unit": "dB",
          "min": 70.5,
          "typ": 72.5,
          "max": null,
          "conditions": "AVDD = 3 V, fIN = 2 kHz",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Total harmonic distortion",
          "symbol": "THD",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": -85,
          "max": null,
          "conditions": "fIN = 2 kHz",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Spurious-free dynamic range",
          "symbol": "SFDR",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 91,
          "max": null,
          "conditions": "fIN = 2 kHz",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Crosstalk",
          "symbol": "",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": -100,
          "max": null,
          "conditions": "100-kHz signal applied on any OFF channel and measured on ON the channel",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Sampling capacitance",
          "symbol": "CSH",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 12,
          "max": null,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Decoupling capacitor on DECAP pin",
          "symbol": "CDECAP",
          "kind": "electrical",
          "unit": "µF",
          "min": 0.1,
          "typ": 1,
          "max": 4.7,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Voltage output on DECAP pin",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.8,
          "max": null,
          "conditions": "CDECAP = 1 µF",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "SCL/SDA input low logic level",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "All I2C modes; max is 0.3 x DVDD",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "SCL/SDA output low logic level",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 0.4,
          "conditions": "Sink current = 2 mA, DVDD > 2 V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "SCL/SDA low-level output current",
          "symbol": "IOL",
          "kind": "electrical",
          "unit": "mA",
          "min": 3,
          "typ": null,
          "max": null,
          "conditions": "VOL = 0.4 V, standard and fast Mode",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "SCL/SDA low-level output current",
          "symbol": "IOL",
          "kind": "electrical",
          "unit": "mA",
          "min": 6,
          "typ": null,
          "max": null,
          "conditions": "VOL = 0.6 V, fast mode",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "SCL/SDA low-level output current",
          "symbol": "IOL",
          "kind": "electrical",
          "unit": "mA",
          "min": 20,
          "typ": null,
          "max": null,
          "conditions": "VOL = 0.4 V, fast mode plus",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "GPIO input low logic level",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "max is 0.3 x AVDD",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "GPIO input leakage current",
          "symbol": "",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": 10,
          "max": 100,
          "conditions": "GPIO configured as input",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "GPIO output high source current",
          "symbol": "IOH",
          "kind": "electrical",
          "unit": "mA",
          "min": 5,
          "typ": null,
          "max": null,
          "conditions": "VOH > 0.7 x AVDD",
          "source_page": 8,
          "source": "datasheet"
        },
        {
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