ADS1251U

{
  "schema_version": 1,
  "type": "component",
  "slug": "ads1251u",
  "title": "ADS1251U",
  "brief": "Texas Instruments Analog To Digital Converters (ADC), SOIC-8. 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",
    "data acquisition",
    "ads1251u",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "ADS1251U",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Data Acquisition",
    "subcategory": "Analog To Digital Converters (ADC)",
    "datasheet": "https://www.ti.com/cn/lit/gpn/ads1251",
    "parts": {
      "symbol": "ads1251u.kicad_sym",
      "footprint": "ads1251u.kicad_mod",
      "model_3d": "ads1251u-etched.glb",
      "model_3d_plain": "ads1251u.glb",
      "model_3d_step": "ads1251u-etched.step",
      "model_3d_step_plain": "ads1251u.step",
      "lbr": "ads1251u.lbr"
    },
    "distributor_links": {
      "lcsc": "C69098",
      "digikey": "ADS1251U-ND",
      "mouser": "595-ADS1251U"
    },
    "distributor_check": {
      "checked_at": "2026-09-26T12:46:33Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "ADS1251U-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-ADS1251U",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "+VIN",
        "type": "input",
        "description": "Positive input of the differential analog input; accepts analog input voltage from GND - 0.3V to VDD + 0.3V with maximum input current of ±10mA continuous."
      },
      {
        "number": "2",
        "name": "–VIN",
        "type": "input",
        "description": "Negative input of the differential analog input; accepts analog input voltage from GND - 0.3V to VDD + 0.3V with maximum input current of ±10mA continuous."
      },
      {
        "number": "3",
        "name": "+VDD",
        "type": "power_in",
        "description": "Power-supply voltage input; nominal +5V, operating range 4.75V to 5.25V, quiescent current 1.5 to 2mA."
      },
      {
        "number": "4",
        "name": "CLK",
        "type": "input",
        "description": "Device system clock, CMOS-compatible Schmitt-Trigger input; nominal 8MHz, used to determine modulator frequency and data output rate."
      },
      {
        "number": "5",
        "name": "DOUT/DRDY",
        "type": "output",
        "description": "Serial data output and data ready indicator; pulses LOW when new data loaded into output register, shifts data MSB-first on falling edge of SCLK."
      },
      {
        "number": "6",
        "name": "SCLK",
        "type": "input",
        "description": "Serial clock input, CMOS-compatible Schmitt-Trigger input; operates independently from CLK up to 8MHz; holding HIGH initiates modulator reset for synchronization or enters power-down mode."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for analog and digital sections; should connect to analog ground plane with trace connection to digital ground plane."
      },
      {
        "number": "8",
        "name": "VREF",
        "type": "power_in",
        "description": "Reference voltage input; accepts 0.5V to VDD with typical load current of 32µA at 8MHz clock; buffered reference recommended."
      }
    ],
    "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": [],
        "pages_sent": 25,
        "cost_usd": 0.1873,
        "at": "2026-09-26T12:46:17"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/ads1251",
        "pages": 25,
        "sha256": "114414aea45f64d9",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ads1251u.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ads1251u-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "b5e6e454c2bc66421a8a8fa91823e01482c32b0924b089c2223cfac5ce821cc1",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOIC-8",
      "Category": "Data Acquisition",
      "Pins": "8"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ads1251u"
  ],
  "discovery_pitch": "ADS1251U (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ads1251u.kicad_sym",
    "ads1251u.kicad_mod",
    "ads1251u.glb",
    "ads1251u.step",
    "ads1251u.lbr",
    "docs/hero.png",
    "docs/ads1251u-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  }
}