ADS8509IDWR

{
  "schema_version": 1,
  "type": "component",
  "slug": "ads8509idwr",
  "title": "ADS8509IDWR",
  "brief": "Texas Instruments Analog To Digital Converters (ADCs), SOIC-20-300mil. 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",
    "ads8509idwr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "ADS8509IDWR",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-20-300mil",
    "pin_count": 20,
    "category": "ADC/DAC/Data Conversion",
    "subcategory": "Analog To Digital Converters (ADCs)",
    "datasheet": "https://www.ti.com/cn/lit/gpn/ads8509",
    "parts": {
      "symbol": "ads8509idwr.kicad_sym",
      "footprint": "ads8509idwr.kicad_mod",
      "model_3d": "ads8509idwr-hero.glb",
      "model_3d_plain": "ads8509idwr.glb",
      "model_3d_step": "ads8509idwr-etched.step",
      "model_3d_step_plain": "ads8509idwr.step",
      "lbr": "ads8509idwr.lbr"
    },
    "distributor_links": {
      "lcsc": "C543025",
      "digikey": "ADS8509IDWR-ND",
      "mouser": "595-ADS8509IDWR"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T21:34:54Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "ADS8509IDWR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-ADS8509IDWR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "R1IN",
        "type": "input",
        "description": "Analog input; see Table 2 for input range connections, with an absolute maximum rating of ±25 V."
      },
      {
        "number": "2",
        "name": "AGND1",
        "type": "power_in",
        "description": "Analog ground used internally as the ground reference point, with minimal current flow."
      },
      {
        "number": "3",
        "name": "R2IN",
        "type": "input",
        "description": "Analog input; see Table 2 for input range connections, with an absolute maximum rating of ±25 V."
      },
      {
        "number": "4",
        "name": "R3IN",
        "type": "input",
        "description": "Analog input; see Table 2 for input range connections, with an absolute maximum rating of ±25 V."
      },
      {
        "number": "5",
        "name": "CAP",
        "type": "passive",
        "description": "Reference buffer capacitor, specified as 2.2-µF tantalum to ground (printed as 2.2-mF in the source)."
      },
      {
        "number": "6",
        "name": "REF",
        "type": "bidirectional",
        "description": "Reference input/output that outputs the internal 2.5-V reference or accepts an external reference (2.3 V to 2.7 V for specified linearity), bypassed to ground with a 2.2-µF tantalum capacitor."
      },
      {
        "number": "7",
        "name": "AGND2",
        "type": "power_in",
        "description": "Analog ground."
      },
      {
        "number": "8",
        "name": "SB/BTC",
        "type": "input",
        "description": "Selects the data output format: high gives straight binary and low gives binary 2's complement."
      },
      {
        "number": "9",
        "name": "EXT/INT",
        "type": "input",
        "description": "Selects the external clock (high, data synchronized to DATACLK input) or internal clock (low, a convert command starts data transmission with 16 clock pulses on DATACLK) for transmitting data."
      },
      {
        "number": "10",
        "name": "DGND",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "11",
        "name": "SYNC",
        "type": "output",
        "description": "Sync output that supplies a data synchronization pulse when EXT is high and at least one external clock pulse has occurred while not in read mode."
      },
      {
        "number": "12",
        "name": "DATACLK",
        "type": "bidirectional",
        "description": "Input or output depending on the EXT/INT level; output data is synchronized to this clock, and when EXT/INT is low it transmits 16 pulses after each conversion and stays low between conversions."
      },
      {
        "number": "13",
        "name": "DATA",
        "type": "output",
        "description": "Serial data output synchronized to DATACLK, with format set by SB/BTC; in external clock mode it outputs the TAG level after 16 bits while CS is low and R/C is high."
      },
      {
        "number": "14",
        "name": "TAG",
        "type": "input",
        "description": "Tag input for external clock mode; when EXT is high, digital data from TAG is output on DATA with a delay that depends on the external clock mode."
      },
      {
        "number": "15",
        "name": "R/C",
        "type": "input",
        "description": "Read/convert input; with CS low, a falling edge puts the sample-and-hold into hold and starts a conversion, and it also starts data transmission when EXT/INT is low."
      },
      {
        "number": "16",
        "name": "CS",
        "type": "input",
        "description": "Chip select, internally ORed with R/C."
      },
      {
        "number": "17",
        "name": "BUSY",
        "type": "output",
        "description": "Busy output that falls when a conversion starts and remains low until the conversion is complete and the data is latched into the output shift register."
      },
      {
        "number": "18",
        "name": "PWRD",
        "type": "input",
        "description": "Power-down input; when high, conversions are inhibited and power consumption is significantly reduced, with previous results held in the output shift register."
      },
      {
        "number": "19",
        "name": "VANA",
        "type": "power_in",
        "description": "Analog supply input, nominally +5 V (absolute maximum 6 V); connect directly to pin 20 and decouple to ground with 0.1-µF ceramic and 10-µF tantalum capacitors."
      },
      {
        "number": "20",
        "name": "VDIG",
        "type": "power_in",
        "description": "Digital supply input, nominally +5 V (absolute maximum 6 V); connect directly to pin 19 and keep at or below VANA."
      }
    ],
    "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 DW pin numbers were taken from the Terminal Functions table (DW NO. column) on page 6, because t; The CAP capacitor value is printed as '2.2-mF' in the source, likely an OCR rendering of 2.2 µF. It ; The Terminal Functions table gives no DW pin number for EXT/INT, SB/BTC, CAP, REF, AGND1, AGND2 or D"
        ],
        "pages_sent": 10,
        "cost_usd": 0.0749,
        "at": "2026-10-08T21:34:04"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/ads8509",
        "pages": 35,
        "sha256": "5e8b3f4fd4d038f2",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 20,
        "described": 20,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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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": "59a10b341e6972b31d81802a048060326da627d8b92dcf4263064f4f62ec808e",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
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        "role": "eda",
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        "zmin_mm": 0,
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        "footprint_binding": "identity",
        "sha256": "ca0c903b147957cce9656aad98235b23304c017922d5126700dbbb512a9dcdf4",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOIC-20-300mil",
      "Category": "ADC/DAC/Data Conversion",
      "Pins": "20"
    }
  },
  "variants": [],
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  "discovery_pitch": "ADS8509IDWR (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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