ADS1235QWRHMRQ1

{
  "schema_version": 1,
  "type": "component",
  "slug": "ads1235qwrhmrq1",
  "title": "ADS1235QWRHMRQ1",
  "brief": "Texas Instruments Analog To Digital Converters (ADCs), VQFN-32-EP(5x5). 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",
    "ads1235qwrhmrq1",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "ADS1235QWRHMRQ1",
    "manufacturer": "Texas Instruments",
    "package": "VQFN-32-EP(5x5)",
    "pin_count": 33,
    "category": "ADC/DAC/Data Conversion",
    "subcategory": "Analog To Digital Converters (ADCs)",
    "datasheet": "https://www.ti.com/cn/lit/gpn/ads1235-q1",
    "parts": {
      "symbol": "ads1235qwrhmrq1.kicad_sym",
      "footprint": "ads1235qwrhmrq1.kicad_mod",
      "model_3d": "ads1235qwrhmrq1-hero.glb",
      "model_3d_plain": "ads1235qwrhmrq1-etched.glb",
      "model_3d_step": "ads1235qwrhmrq1-etched.step",
      "model_3d_step_plain": "ads1235qwrhmrq1.step",
      "lbr": "ads1235qwrhmrq1.lbr"
    },
    "distributor_links": {
      "lcsc": "C2876667",
      "digikey": "296-ADS1235QWRHMRQ1TR-ND",
      "mouser": "595-ADS1235QWRHMRQ1"
    },
    "distributor_check": {
      "checked_at": "2026-10-20T21:55:36Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-ADS1235QWRHMRQ1TR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "595-ADS1235QWRHMRQ1",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection; float or connect to AVSS."
      },
      {
        "number": "2",
        "name": "CAPP",
        "type": "output",
        "description": "PGA output P; connect a 4.7-nF C0G dielectric capacitor across CAPP and CAPN."
      },
      {
        "number": "3",
        "name": "CAPN",
        "type": "output",
        "description": "PGA output N; connect a 4.7-nF C0G dielectric capacitor across CAPP and CAPN."
      },
      {
        "number": "4",
        "name": "AVDD",
        "type": "power_in",
        "description": "Positive analog power supply."
      },
      {
        "number": "5",
        "name": "AVSS",
        "type": "power_in",
        "description": "Negative analog power supply."
      },
      {
        "number": "6",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection; solder the pin for mechanical support, float or connect to DGND."
      },
      {
        "number": "7",
        "name": "PWDN",
        "type": "input",
        "description": "Power down, active low."
      },
      {
        "number": "8",
        "name": "RESET",
        "type": "input",
        "description": "Reset, active low."
      },
      {
        "number": "9",
        "name": "START",
        "type": "input",
        "description": "Start conversion control, active high."
      },
      {
        "number": "10",
        "name": "CS",
        "type": "input",
        "description": "Serial interface chip select, active low."
      },
      {
        "number": "11",
        "name": "SCLK",
        "type": "input",
        "description": "Serial interface shift clock."
      },
      {
        "number": "12",
        "name": "DIN",
        "type": "input",
        "description": "Serial interface data input."
      },
      {
        "number": "13",
        "name": "DRDY",
        "type": "output",
        "description": "Data ready indicator, active low."
      },
      {
        "number": "14",
        "name": "DOUT/DRDY",
        "type": "output",
        "description": "Dual-function serial interface data output and active-low data ready indicator."
      },
      {
        "number": "15",
        "name": "BYPASS",
        "type": "output",
        "description": "Internal subregulator bypass; connect a 1-µF capacitor to DGND."
      },
      {
        "number": "16",
        "name": "DGND",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "17",
        "name": "DVDD",
        "type": "power_in",
        "description": "Digital power supply."
      },
      {
        "number": "18",
        "name": "CLKIN",
        "type": "input",
        "description": "Internal oscillator: connect to DGND; external clock: connect clock input."
      },
      {
        "number": "19",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection; solder the pin for mechanical support, float or connect to DGND."
      },
      {
        "number": "20",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection; solder the pin for mechanical support, float or connect to DGND."
      },
      {
        "number": "21",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection; solder the pin for mechanical support, float or connect to DGND."
      },
      {
        "number": "22",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection; solder the pin for mechanical support, float or connect to DGND."
      },
      {
        "number": "23",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection; solder the pin for mechanical support, float or connect to DGND."
      },
      {
        "number": "24",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection; solder the pin for mechanical support, float or connect to DGND."
      },
      {
        "number": "25",
        "name": "AIN5",
        "type": "input",
        "description": "Analog input 5."
      },
      {
        "number": "26",
        "name": "AIN4",
        "type": "input",
        "description": "Analog input 4."
      },
      {
        "number": "27",
        "name": "AIN3",
        "type": "bidirectional",
        "description": "Analog input 3, also GPIO3 and ACX2."
      },
      {
        "number": "28",
        "name": "AIN2",
        "type": "bidirectional",
        "description": "Analog input 2, also GPIO2 and ACX1."
      },
      {
        "number": "29",
        "name": "AIN1",
        "type": "bidirectional",
        "description": "Analog input 1, also GPIO1, ACX2 and reference input 1 negative."
      },
      {
        "number": "30",
        "name": "AIN0",
        "type": "bidirectional",
        "description": "Analog input 0, also GPIO0, ACX1 and reference input 1 positive."
      },
      {
        "number": "31",
        "name": "REFN0",
        "type": "bidirectional",
        "description": "Reference input 0 negative."
      },
      {
        "number": "32",
        "name": "REFP0",
        "type": "bidirectional",
        "description": "Reference input 0 positive."
      },
      {
        "number": "33",
        "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 exposed thermal pad is listed in the pin table as 'Thermal Pad' with no printed pin number, so i; Pin types for AIN3, AIN2, AIN1, AIN0, REFN0 and REFP0 are printed as 'Analog input/output' in the da; Pin types for CAPP, CAPN and BYPASS are printed as 'Analog output' and mapped to KiCad output. AVSS ",
          "exposed pad 33 added from the footprint"
        ],
        "pages_sent": 14,
        "cost_usd": 0.0878,
        "at": "2026-10-20T21:52:23"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/ads1235-q1",
        "pages": 75,
        "sha256": "d9217352d32d5a09",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 33,
        "described": 33,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ads1235qwrhmrq1.step",
        "role": "plain",
        "up": "Z",
        "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": "5fa713ea46b36980895812ed853577889b7cb06d275041a39b99bc0be305dc79",
        "checked": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ads1235qwrhmrq1-etched.step",
        "role": "eda",
        "up": "Z",
        "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": "434ca84640ae7c53ea06461fc1c5e716fe661a13bc9ae1f587143b621fd5e192",
        "checked": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "VQFN-32-EP(5x5)",
      "Category": "ADC/DAC/Data Conversion",
      "Pins": "33"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "d9217352d32d5a09e8170c46205bb1ab94e93a7b90bd48b16ae9b8b3ddeef691",
      "rows": [
        {
          "name": "Power supply voltage AVDD to AVSS",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "AVSS to DGND",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -3,
          "typ": null,
          "max": 0.3,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "DVDD to DGND",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
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          "conditions": "",
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        },
        {
          "name": "Input current",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -10,
          "typ": null,
          "max": 10,
          "conditions": "Continuous, all pins except power-supply pins",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Junction temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -60,
          "typ": null,
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          "conditions": "",
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        },
        {
          "name": "Analog power supply AVDD to AVSS",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 4.75,
          "typ": 5,
          "max": 5.25,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "AVSS to DGND",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": -2.6,
          "typ": null,
          "max": 0,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Digital power supply DVDD to DGND",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.7,
          "typ": null,
          "max": 5.25,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Differential reference voltage",
          "symbol": "VREF",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0.9,
          "typ": null,
          "max": null,
          "conditions": "VREF = V(REFPx) – V(REFNx)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "External clock frequency",
          "symbol": "fCLK",
          "kind": "recommended_operating",
          "unit": "MHz",
          "min": 1,
          "typ": 7.3728,
          "max": 8,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Duty cycle",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "%",
          "min": 40,
          "typ": null,
          "max": 60,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operating ambient temperature",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Absolute input current",
          "symbol": "",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": 4,
          "max": 12,
          "conditions": "PGA mode, V(AINx) = 2.5 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Differential input current",
          "symbol": "",
          "kind": "electrical",
          "unit": "nA",
          "min": -8,
          "typ": 1,
          "max": 8,
          "conditions": "PGA mode, VIN = 2.5 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Data rate",
          "symbol": "DR",
          "kind": "electrical",
          "unit": "SPS",
          "min": 2.5,
          "typ": null,
          "max": 7200,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Integral non-linearity",
          "symbol": "INL",
          "kind": "electrical",
          "unit": "ppmFSR",
          "min": -10,
          "typ": 2,
          "max": 10,
          "conditions": "Gain = 1, 64 and 128",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Offset voltage",
          "symbol": "VOS",
          "kind": "electrical",
          "unit": "µV",
          "min": -355,
          "typ": 50,
          "max": 355,
          "conditions": "TA = 25°C, gain = 1",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Offset voltage",
          "symbol": "VOS",
          "kind": "electrical",
          "unit": "µV",
          "min": -10,
          "typ": 1.5,
          "max": 10,
          "conditions": "TA = 25°C, gain = 64 and 128",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Offset voltage",
          "symbol": "VOS",
          "kind": "electrical",
          "unit": "µV",
          "min": -0.6,
          "typ": 0.2,
          "max": 0.6,
          "conditions": "TA = 25°C, gain = 1, chop mode",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Offset voltage",
          "symbol": "VOS",
          "kind": "electrical",
          "unit": "µV",
          "min": -0.06,
          "typ": 0.005,
          "max": 0.06,
          "conditions": "TA = 25°C, gain = 64 and 128, chop mode",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Offset voltage drift",
          "symbol": "",
          "kind": "electrical",
          "unit": "nV/°C",
          "min": null,
          "typ": 150,
          "max": 350,
          "conditions": "Gain = 1",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Offset voltage drift",
          "symbol": "",
          "kind": "electrical",
          "unit": "nV/°C",
          "min": null,
          "typ": 15,
          "max": 75,
          "conditions": "Gain = 64 and 128",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Offset voltage drift",
          "symbol": "",
          "kind": "electrical",
          "unit": "nV/°C",
          "min": null,
          "typ": 1,
          "max": 5,
          "conditions": "Gain = 1, 64, and 128, chop mode",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Gain error",
          "symbol": "GE",
          "kind": "electrical",
          "unit": "%",
          "min": -0.6,
          "typ": 0.05,
          "max": 0.6,
          "conditions": "TA = 25°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Gain drift",
          "symbol": "",
          "kind": "electrical",
          "unit": "ppm/°C",
          "min": null,
          "typ": 0.5,
          "max": 4,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Common-mode rejection ratio",
          "symbol": "CMRR",
          "kind": "electrical",
          "unit": "dB",
          "min": 105,
          "typ": 115,
          "max": null,
          "conditions": "Data rate = 400 SPS",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Power-supply rejection ratio, AVDD and AVSS",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": 85,
          "typ": 100,
          "max": null,
          "conditions": "AVDD and AVSS",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Power-supply rejection ratio, DVDD",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": 95,
          "typ": 120,
          "max": null,
          "conditions": "DVDD",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Internal oscillator accuracy",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -2,
          "typ": 0.5,
          "max": 2,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Low voltage monitor threshold low",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.4,
          "max": 0.6,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Input leakage",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": -10,
          "typ": null,
          "max": 10,
          "conditions": "VIH or VIL",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Analog supply current",
          "symbol": "IAVDD, IAVSS",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 2.7,
          "max": 4.5,
          "conditions": "PGA bypass",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Analog supply current",
          "symbol": "IAVDD, IAVSS",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 4.3,
          "max": 6.5,
          "conditions": "PGA mode, gain = 64 and 128",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Analog supply current in power-down mode",
          "symbol": "IAVDD, IAVSS",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 2,
          "max": 8,
          "conditions": "Power-down mode",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Digital supply current",
          "symbol": "IDVDD",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.4,
          "max": 0.7,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Digital supply current in power-down mode",
          "symbol": "IDVDD",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 30,
          "max": 75,
          "conditions": "Power-down mode; CLKIN input stopped",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Power dissipation",
          "symbol": "PD",
          "kind": "electrical",
          "unit": "mW",
          "min": null,
          "typ": 23,
          "max": 35,
          "conditions": "PGA mode, gain = 64 and 128",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Power dissipation in power-down mode",
          "symbol": "PD",
          "kind": "electrical",
          "unit": "mW",
          "min": null,
          "typ": 0.1,
          "max": 0.3,
          "conditions": "Power-down mode",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "SCLK period",
          "symbol": "tc(SC)",
          "kind": "timing",
          "unit": "ns",
          "min": 97,
          "typ": null,
          "max": 106,
          "conditions": "DVDD = 2.7 V to 5.25 V; DOUT/DRDY load 20 pF || 100 kΩ to DGND",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Propagation delay, CS falling edge to DOUT/DRDY driven",
          "symbol": "tp(CSDO)",
          "kind": "timing",
          "unit": "ns",
          "min": 0,
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