ADS5281IRGCR

{
  "schema_version": 1,
  "type": "component",
  "slug": "ads5281irgcr",
  "title": "ADS5281IRGCR",
  "brief": "Texas Instruments Analog To Digital Converters (ADCs), VQFN-64-EP(9x9). 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",
    "ads5281irgcr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "ADS5281IRGCR",
    "manufacturer": "Texas Instruments",
    "package": "VQFN-64-EP(9x9)",
    "pin_count": 65,
    "category": "ADC/DAC/Data Conversion",
    "subcategory": "Analog To Digital Converters (ADCs)",
    "datasheet": "https://www.ti.com/cn/lit/gpn/ads5281",
    "parts": {
      "symbol": "ads5281irgcr.kicad_sym",
      "footprint": "ads5281irgcr.kicad_mod",
      "model_3d": "ads5281irgcr-etched.glb",
      "model_3d_plain": "ads5281irgcr.glb",
      "model_3d_step": "ads5281irgcr-etched.step",
      "model_3d_step_plain": "ads5281irgcr.step",
      "lbr": "ads5281irgcr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2670883"
    },
    "pins": [
      {
        "number": "1",
        "name": "IN1P",
        "type": "input",
        "description": "Positive differential analog input for channel 1; drive with IN1N around 1.5V common-mode with 2VPP total differential swing maximum."
      },
      {
        "number": "2",
        "name": "IN1N",
        "type": "input",
        "description": "Negative differential analog input for channel 1; pair with IN1P around 1.5V common-mode with 2VPP maximum differential swing."
      },
      {
        "number": "3",
        "name": "AVSS",
        "type": "power_in",
        "description": "Analog power supply ground."
      },
      {
        "number": "4",
        "name": "IN2P",
        "type": "input",
        "description": "Positive differential analog input for channel 2; drive with IN2N around 1.5V common-mode with 2VPP total differential swing maximum."
      },
      {
        "number": "5",
        "name": "IN2N",
        "type": "input",
        "description": "Negative differential analog input for channel 2; pair with IN2P around 1.5V common-mode with 2VPP maximum differential swing."
      },
      {
        "number": "6",
        "name": "AVSS",
        "type": "power_in",
        "description": "Analog power supply ground."
      },
      {
        "number": "7",
        "name": "IN3P",
        "type": "input",
        "description": "Positive differential analog input for channel 3; drive with IN3N around 1.5V common-mode with 2VPP total differential swing maximum."
      },
      {
        "number": "8",
        "name": "IN3N",
        "type": "input",
        "description": "Negative differential analog input for channel 3; pair with IN3P around 1.5V common-mode with 2VPP maximum differential swing."
      },
      {
        "number": "9",
        "name": "AVSS",
        "type": "power_in",
        "description": "Analog power supply ground."
      },
      {
        "number": "10",
        "name": "IN4P",
        "type": "input",
        "description": "Positive differential analog input for channel 4; drive with IN4N around 1.5V common-mode with 2VPP total differential swing maximum."
      },
      {
        "number": "11",
        "name": "IN4N",
        "type": "input",
        "description": "Negative differential analog input for channel 4; pair with IN4P around 1.5V common-mode with 2VPP maximum differential swing."
      },
      {
        "number": "12",
        "name": "LVSS",
        "type": "power_in",
        "description": "Digital power supply ground."
      },
      {
        "number": "13",
        "name": "PD",
        "type": "input",
        "description": "Power-down control input, active high; pull high to enter power-down mode as configured via register 0x0F."
      },
      {
        "number": "14",
        "name": "LVSS",
        "type": "power_in",
        "description": "Digital power supply ground."
      },
      {
        "number": "15",
        "name": "OUT1P",
        "type": "output",
        "description": "LVDS positive output for channel 1; 12-bit serialized ADC data at 1× sample rate with 1200mV common-mode and 350mV differential swing."
      },
      {
        "number": "16",
        "name": "OUT1N",
        "type": "output",
        "description": "LVDS negative output for channel 1; 12-bit serialized ADC data at 1× sample rate with 1200mV common-mode and 350mV differential swing."
      },
      {
        "number": "17",
        "name": "OUT2P",
        "type": "output",
        "description": "LVDS positive output for channel 2; 12-bit serialized ADC data at 1× sample rate with 1200mV common-mode and 350mV differential swing."
      },
      {
        "number": "18",
        "name": "OUT2N",
        "type": "output",
        "description": "LVDS negative output for channel 2; 12-bit serialized ADC data at 1× sample rate with 1200mV common-mode and 350mV differential swing."
      },
      {
        "number": "19",
        "name": "OUT3P",
        "type": "output",
        "description": "LVDS positive output for channel 3; 12-bit serialized ADC data at 1× sample rate with 1200mV common-mode and 350mV differential swing."
      },
      {
        "number": "20",
        "name": "OUT3N",
        "type": "output",
        "description": "LVDS negative output for channel 3; 12-bit serialized ADC data at 1× sample rate with 1200mV common-mode and 350mV differential swing."
      },
      {
        "number": "21",
        "name": "OUT4P",
        "type": "output",
        "description": "LVDS positive output for channel 4; 12-bit serialized ADC data at 1× sample rate with 1200mV common-mode and 350mV differential swing."
      },
      {
        "number": "22",
        "name": "OUT4N",
        "type": "output",
        "description": "LVDS negative output for channel 4; 12-bit serialized ADC data at 1× sample rate with 1200mV common-mode and 350mV differential swing."
      },
      {
        "number": "23",
        "name": "ADCLKP",
        "type": "output",
        "description": "LVDS positive frame clock output at 1× sample rate; synchronized with serialized data output."
      },
      {
        "number": "24",
        "name": "ADCLKN",
        "type": "output",
        "description": "LVDS negative frame clock output at 1× sample rate; synchronized with serialized data output."
      },
      {
        "number": "25",
        "name": "LCLKP",
        "type": "output",
        "description": "LVDS positive bit clock output at 6× sample rate; strobe for capturing 12-bit serialized data words."
      },
      {
        "number": "26",
        "name": "LCLKN",
        "type": "output",
        "description": "LVDS negative bit clock output at 6× sample rate; strobe for capturing 12-bit serialized data words."
      },
      {
        "number": "27",
        "name": "OUT5P",
        "type": "output",
        "description": "LVDS positive output for channel 5; 12-bit serialized ADC data at 1× sample rate with 1200mV common-mode and 350mV differential swing."
      },
      {
        "number": "28",
        "name": "OUT5N",
        "type": "output",
        "description": "LVDS negative output for channel 5; 12-bit serialized ADC data at 1× sample rate with 1200mV common-mode and 350mV differential swing."
      },
      {
        "number": "29",
        "name": "OUT6P",
        "type": "output",
        "description": "LVDS positive output for channel 6; 12-bit serialized ADC data at 1× sample rate with 1200mV common-mode and 350mV differential swing."
      },
      {
        "number": "30",
        "name": "OUT6N",
        "type": "output",
        "description": "LVDS negative output for channel 6; 12-bit serialized ADC data at 1× sample rate with 1200mV common-mode and 350mV differential swing."
      },
      {
        "number": "31",
        "name": "OUT7P",
        "type": "output",
        "description": "LVDS positive output for channel 7; 12-bit serialized ADC data at 1× sample rate with 1200mV common-mode and 350mV differential swing."
      },
      {
        "number": "32",
        "name": "OUT7N",
        "type": "output",
        "description": "LVDS negative output for channel 7; 12-bit serialized ADC data at 1× sample rate with 1200mV common-mode and 350mV differential swing."
      },
      {
        "number": "33",
        "name": "OUT8P",
        "type": "output",
        "description": "LVDS positive output for channel 8; 12-bit serialized ADC data at 1× sample rate with 1200mV common-mode and 350mV differential swing."
      },
      {
        "number": "34",
        "name": "OUT8N",
        "type": "output",
        "description": "LVDS negative output for channel 8; 12-bit serialized ADC data at 1× sample rate with 1200mV common-mode and 350mV differential swing."
      },
      {
        "number": "35",
        "name": "LVDD",
        "type": "power_in",
        "description": "Digital and I/O power supply, nominal 1.8V; requires bulk and bypass capacitors to LVSS."
      },
      {
        "number": "36",
        "name": "LVSS",
        "type": "power_in",
        "description": "Digital power supply ground."
      },
      {
        "number": "37",
        "name": "AVSS",
        "type": "power_in",
        "description": "Analog power supply ground."
      },
      {
        "number": "38",
        "name": "IN5P",
        "type": "input",
        "description": "Positive differential analog input for channel 5; drive with IN5N around 1.5V common-mode with 2VPP total differential swing maximum."
      },
      {
        "number": "39",
        "name": "IN5N",
        "type": "input",
        "description": "Negative differential analog input for channel 5; pair with IN5P around 1.5V common-mode with 2VPP maximum differential swing."
      },
      {
        "number": "40",
        "name": "AVSS",
        "type": "power_in",
        "description": "Analog power supply ground."
      },
      {
        "number": "41",
        "name": "IN6P",
        "type": "input",
        "description": "Positive differential analog input for channel 6; drive with IN6N around 1.5V common-mode with 2VPP total differential swing maximum."
      },
      {
        "number": "42",
        "name": "IN6N",
        "type": "input",
        "description": "Negative differential analog input for channel 6; pair with IN6P around 1.5V common-mode with 2VPP maximum differential swing."
      },
      {
        "number": "43",
        "name": "AVSS",
        "type": "power_in",
        "description": "Analog power supply ground."
      },
      {
        "number": "44",
        "name": "IN7P",
        "type": "input",
        "description": "Positive differential analog input for channel 7; drive with IN7N around 1.5V common-mode with 2VPP total differential swing maximum."
      },
      {
        "number": "45",
        "name": "IN7N",
        "type": "input",
        "description": "Negative differential analog input for channel 7; pair with IN7P around 1.5V common-mode with 2VPP maximum differential swing."
      },
      {
        "number": "46",
        "name": "AVSS",
        "type": "power_in",
        "description": "Analog power supply ground."
      },
      {
        "number": "47",
        "name": "IN8P",
        "type": "input",
        "description": "Positive differential analog input for channel 8; drive with IN8N around 1.5V common-mode with 2VPP total differential swing maximum."
      },
      {
        "number": "48",
        "name": "IN8N",
        "type": "input",
        "description": "Negative differential analog input for channel 8; pair with IN8P around 1.5V common-mode with 2VPP maximum differential swing."
      },
      {
        "number": "49",
        "name": "AVDD",
        "type": "power_in",
        "description": "Analog power supply, nominal 3.3V; requires bulk and bypass capacitors to AVSS."
      },
      {
        "number": "50",
        "name": "AVDD",
        "type": "power_in",
        "description": "Analog power supply, nominal 3.3V; requires bulk and bypass capacitors to AVSS."
      },
      {
        "number": "51",
        "name": "ISET",
        "type": "passive",
        "description": "External resistor to ground, nominal 56.2kΩ; sets internal bias current to 20μA for ADC operation."
      },
      {
        "number": "52",
        "name": "TP",
        "type": "unconnected",
        "description": "Test pin; do not connect or connect to ground."
      },
      {
        "number": "53",
        "name": "VCM",
        "type": "output",
        "description": "Common-mode output pin, nominal 1.5V; internally generated reference voltage for input biasing."
      },
      {
        "number": "54",
        "name": "REFB",
        "type": "bidirectional",
        "description": "Negative reference voltage input/output; 0.5V nominal internal or external 0.4-0.6V depending on INT/EXT configuration."
      },
      {
        "number": "55",
        "name": "REFT",
        "type": "bidirectional",
        "description": "Positive reference voltage input/output; 2.5V nominal internal or external 2.4-2.6V depending on INT/EXT configuration."
      },
      {
        "number": "56",
        "name": "INT/EXT",
        "type": "input",
        "description": "Internal/external reference mode select; pull low for external reference mode, high for internal reference mode (default)."
      },
      {
        "number": "57",
        "name": "AVDD",
        "type": "power_in",
        "description": "Analog power supply, nominal 3.3V; requires bulk and bypass capacitors to AVSS."
      },
      {
        "number": "58",
        "name": "CLKP",
        "type": "input",
        "description": "Positive differential ADC sample clock input; operate 10-65MSPS with 0.6-2.2V CMOS or ac-coupled differential signal."
      },
      {
        "number": "59",
        "name": "CLKN",
        "type": "input",
        "description": "Negative differential ADC sample clock input; tie to 0V for single-ended clock or drive differentially with CLKP."
      },
      {
        "number": "60",
        "name": "AVDD",
        "type": "power_in",
        "description": "Analog power supply, nominal 3.3V; requires bulk and bypass capacitors to AVSS."
      },
      {
        "number": "61",
        "name": "CS",
        "type": "input",
        "description": "Serial interface chip select, active low; hold low for at least 24 SCLK periods to execute register write."
      },
      {
        "number": "62",
        "name": "SDATA",
        "type": "input",
        "description": "Serial data input; 24-bit word format (8-bit address + 16-bit data), latched on SCLK rising edges when CS is low."
      },
      {
        "number": "63",
        "name": "SCLK",
        "type": "input",
        "description": "Serial clock input; up to 20MHz frequency, latches SDATA on rising edges."
      },
      {
        "number": "64",
        "name": "RESET",
        "type": "input",
        "description": "Active low asynchronous reset input; pulse low for minimum 100ns to initialize all registers to default values."
      },
      {
        "number": "65",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.2",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.2",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-4-6",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "exposed pad 65 added from the footprint"
        ],
        "pages_sent": 52,
        "cost_usd": 0.7809,
        "at": "2026-09-22T00:12:23"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/ads5281",
        "pages": 52,
        "sha256": "b793bc6b7365edb1",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 65,
        "described": 65,
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        "refuses_to_fabricate": true
      }
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      "footprint": "viewers/footprint.html"
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "dce07a86ec3fe3ca87eebdff13827f55e036ced5518fee01f85cec4a3f56366d",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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        "sha256": "d9efe1cb385bb55f0a64cde0d3df467f0ad522b04c9e68d7e309e4a4060b91e8",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "VQFN-64-EP(9x9)",
      "Category": "ADC/DAC/Data Conversion",
      "Pins": "65"
    }
  },
  "variants": [],
  "sections": [
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  "discovery_triggers": [
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  "discovery_pitch": "ADS5281IRGCR (Texas Instruments) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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  "updated_at": "2026-09-24T15:59:56.596Z"
}