DAC7822IRTAT

{
  "slug": "dac7822irtat",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Digital To Analog Converters (DACs), WQFN-40-EP(6x6). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "data converters",
    "dac7822irtat",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
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    "dac7822irtat.kicad_mod",
    "dac7822irtat.glb",
    "dac7822irtat.step",
    "dac7822irtat.lbr",
    "docs/hero.png",
    "docs/dac7822irtat-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "dac7822irtat-hero.glb",
    "dac7822irtat-hero.overlay.json"
  ],
  "component": {
    "mpn": "DAC7822IRTAT",
    "manufacturer": "Texas Instruments",
    "package": "WQFN-40-EP(6x6)",
    "pin_count": 41,
    "category": "Data Converters",
    "subcategory": "Digital To Analog Converters (DACs)",
    "datasheet": "https://www.ti.com/lit/ds/symlink/dac7822.pdf",
    "parts": {
      "symbol": "dac7822irtat.kicad_sym",
      "footprint": "dac7822irtat.kicad_mod",
      "model_3d": "dac7822irtat-hero.glb",
      "model_3d_plain": "dac7822irtat.glb",
      "model_3d_step": "dac7822irtat-etched.step",
      "model_3d_step_plain": "dac7822irtat.step",
      "lbr": "dac7822irtat.lbr"
    },
    "distributor_links": {
      "lcsc": "C2679564",
      "digikey": "296-20636-2-ND",
      "mouser": "595-DAC7822IRTAT"
    },
    "distributor_check": {
      "checked_at": "2026-11-12T20:08:18Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-20636-2-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "595-DAC7822IRTAT",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "R1A",
        "type": "passive",
        "description": "DAC A 4-quadrant resistor that allows bipolar operation and other configuration modes with a minimum of external components."
      },
      {
        "number": "2",
        "name": "R2A",
        "type": "passive",
        "description": "DAC A 4-quadrant resistor that allows bipolar operation and other configuration modes with a minimum of external components."
      },
      {
        "number": "3",
        "name": "R2_3A",
        "type": "passive",
        "description": "DAC A 4-quadrant resistor that allows bipolar operation and other configuration modes with a minimum of external components."
      },
      {
        "number": "4",
        "name": "R3A",
        "type": "passive",
        "description": "DAC A 4-quadrant resistor that allows bipolar operation and other configuration modes with a minimum of external components."
      },
      {
        "number": "5",
        "name": "VREFA",
        "type": "input",
        "description": "DAC A reference voltage input terminal for the multiplying R-2R DAC."
      },
      {
        "number": "6",
        "name": "DGND",
        "type": "power_in",
        "description": "Digital ground pin."
      },
      {
        "number": "7",
        "name": "LDAC",
        "type": "input",
        "description": "Load DAC input: when driven low the DAC updates asynchronously, and when held permanently low an automatic synchronous update occurs on the rising edge of CS."
      },
      {
        "number": "8",
        "name": "DAC A/B",
        "type": "input",
        "description": "Selects DAC A when low and DAC B when high."
      },
      {
        "number": "9",
        "name": "NC",
        "type": "unconnected",
        "description": "Not internally connected."
      },
      {
        "number": "10",
        "name": "DB11",
        "type": "bidirectional",
        "description": "Parallel data bit 11 (MSB) used to load data to the input latch or read back the DAC register."
      },
      {
        "number": "11",
        "name": "DB10",
        "type": "bidirectional",
        "description": "Parallel data bit 10 used to load data to the input latch or read back the DAC register."
      },
      {
        "number": "12",
        "name": "DB9",
        "type": "bidirectional",
        "description": "Parallel data bit 9 used to load data to the input latch or read back the DAC register."
      },
      {
        "number": "13",
        "name": "DB8",
        "type": "bidirectional",
        "description": "Parallel data bit 8 used to load data to the input latch or read back the DAC register."
      },
      {
        "number": "14",
        "name": "DB7",
        "type": "bidirectional",
        "description": "Parallel data bit 7 used to load data to the input latch or read back the DAC register."
      },
      {
        "number": "15",
        "name": "DB6",
        "type": "bidirectional",
        "description": "Parallel data bit 6 used to load data to the input latch or read back the DAC register."
      },
      {
        "number": "16",
        "name": "DB5",
        "type": "bidirectional",
        "description": "Parallel data bit 5 used to load data to the input latch or read back the DAC register."
      },
      {
        "number": "17",
        "name": "DB4",
        "type": "bidirectional",
        "description": "Parallel data bit 4 used to load data to the input latch or read back the DAC register."
      },
      {
        "number": "18",
        "name": "DB3",
        "type": "bidirectional",
        "description": "Parallel data bit 3 used to load data to the input latch or read back the DAC register."
      },
      {
        "number": "19",
        "name": "DB2",
        "type": "bidirectional",
        "description": "Parallel data bit 2 used to load data to the input latch or read back the DAC register."
      },
      {
        "number": "20",
        "name": "DB1",
        "type": "bidirectional",
        "description": "Parallel data bit 1 used to load data to the input latch or read back the DAC register."
      },
      {
        "number": "21",
        "name": "DB0",
        "type": "bidirectional",
        "description": "Parallel data bit 0 (LSB) used to load data to the input latch or read back the DAC register."
      },
      {
        "number": "22",
        "name": "CS",
        "type": "input",
        "description": "Active-low chip select that is edge sensitive, with the DAC data latched when it is pulled high."
      },
      {
        "number": "23",
        "name": "R/W",
        "type": "input",
        "description": "Read/write control: when low, used with CS to load parallel data; when high, used with CS to read back the DAC register contents."
      },
      {
        "number": "24",
        "name": "CLR",
        "type": "input",
        "description": "Active-low control input that clears the DAC output, input and DAC registers."
      },
      {
        "number": "25",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive power supply input that can be operated from 2.5 V to 5.5 V."
      },
      {
        "number": "26",
        "name": "VREFB",
        "type": "input",
        "description": "DAC B reference voltage input terminal for the multiplying R-2R DAC."
      },
      {
        "number": "27",
        "name": "R3B",
        "type": "passive",
        "description": "DAC B 4-quadrant resistor that allows bipolar operation and other configuration modes with a minimum of external components."
      },
      {
        "number": "28",
        "name": "R2_3B",
        "type": "passive",
        "description": "DAC B 4-quadrant resistor that allows bipolar operation and other configuration modes with a minimum of external components."
      },
      {
        "number": "29",
        "name": "R2B",
        "type": "passive",
        "description": "DAC B 4-quadrant resistor that allows bipolar operation and other configuration modes with a minimum of external components."
      },
      {
        "number": "30",
        "name": "R1B",
        "type": "passive",
        "description": "DAC B 4-quadrant resistor that allows bipolar operation and other configuration modes with a minimum of external components."
      },
      {
        "number": "31",
        "name": "RFBB",
        "type": "output",
        "description": "DAC B feedback resistor terminal connected to the external amplifier output."
      },
      {
        "number": "32",
        "name": "IOUT2B",
        "type": "power_in",
        "description": "Analog ground for the DAC that typically ties to the system analog ground but can be biased to achieve single-supply operation."
      },
      {
        "number": "33",
        "name": "IOUT1B",
        "type": "output",
        "description": "DAC B current output."
      },
      {
        "number": "34",
        "name": "NC",
        "type": "unconnected",
        "description": "Not internally connected."
      },
      {
        "number": "35",
        "name": "NC",
        "type": "unconnected",
        "description": "Not internally connected."
      },
      {
        "number": "36",
        "name": "NC",
        "type": "unconnected",
        "description": "Not internally connected."
      },
      {
        "number": "37",
        "name": "NC",
        "type": "unconnected",
        "description": "Not internally connected."
      },
      {
        "number": "38",
        "name": "IOUT1A",
        "type": "output",
        "description": "DAC A current output."
      },
      {
        "number": "39",
        "name": "IOUT2A",
        "type": "power_in",
        "description": "Analog ground for the DAC that typically ties to the system analog ground but can be biased to achieve single-supply operation."
      },
      {
        "number": "40",
        "name": "RFBA",
        "type": "output",
        "description": "DAC A feedback resistor terminal connected to the external amplifier output."
      },
      {
        "number": "41",
        "name": "EP",
        "type": "passive",
        "description": "Exposed thermal pad that must be soldered to the printed circuit board for optimal thermal and mechanical performance."
      }
    ],
    "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 thermal pad is not listed in the terminal functions table. It is labeled 41 only in the land pat; The terminal functions table labels pins 32 and 39 as 'DAC A Analog Ground', but pin 32 is named IOU; Types for pins 5, 26 (VREF) and 31, 40 (RFB) are my ERC classifications from the datasheet descripti"
        ],
        "pages_sent": 25,
        "cost_usd": 0.0075,
        "at": "2026-11-12T20:08:05"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/dac7822.pdf",
        "pages": 25,
        "sha256": "a8f8e4be8cb38074",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "model_3d_generated": {
        "generator": "factory/gen_pkg3d.py",
        "family": "QFN",
        "height_mm": 0.8,
        "height_basis": "datasheet A, max",
        "standoff_mm": 0.0
      },
      "pins": {
        "total": 41,
        "described": 41,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "dac7822irtat.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.02,
          6.02,
          0.8
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "7e554fbe73f9db1d863463e0e9bdc36a67a9bc92edb4f7a076a8bd2ec4e1219b",
        "checked": "2026-11-12",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "dac7822irtat-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": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "4be56e47c66418a24178ba2b4f5e82467e0fbb33cf6faa6a51d770516ddff19b",
        "checked": "2026-11-12",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "RTA0040B",
      "source_page": 22,
      "D": {
        "nom_mm": 6.0,
        "range_mm": [
          5.9,
          6.1
        ]
      },
      "E1": {
        "nom_mm": 6.0,
        "range_mm": [
          5.9,
          6.1
        ]
      },
      "e": {
        "nom_mm": 0.5,
        "range_mm": [
          null,
          null
        ]
      },
      "A": {
        "nom_mm": 0.8,
        "range_mm": [
          null,
          0.8
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "dac7822irtat.step",
        "verdict": "PASS",
        "reasons": [
          "height within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}