REF2033

{
  "schema_version": 1,
  "type": "component",
  "slug": "ref2033",
  "title": "REF2033",
  "brief": "TI dual-output voltage reference, SOT-23-5. 3.3 V VREF plus a tracking VBIAS at VREF/2, low drift. Datasheet-verified.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "reference",
    "voltage-reference",
    "bidirectional",
    "sot-23-5",
    "texas-instruments"
  ],
  "component": {
    "mpn": "REF2033",
    "manufacturer": "Texas Instruments",
    "package": "SOT-23-5",
    "pin_count": 5,
    "category": "Reference",
    "subcategory": "Voltage reference",
    "datasheet": "https://www.ti.com/lit/ds/symlink/ref2033.pdf",
    "parts": {
      "symbol": "ref2033.kicad_sym",
      "footprint": "ref2033.kicad_mod",
      "model_3d": "ref2033-etched.glb",
      "model_3d_plain": "ref2033.glb",
      "model_3d_step": "ref2033-etched.step",
      "model_3d_step_plain": "ref2033.step",
      "lbr": "ref2033.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "VBIAS",
        "type": "output",
        "description": "Bias voltage output equal to VREF/2 (1.65 V for REF2033). Can source and sink up to ±20 mA and tracks VREF over temperature."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground return."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "Active-high enable. Device is enabled when EN >= VIN - 0.7 V; shutdown when EN <= 0.7 V. Shutdown supply current is typically 3.3 uA."
      },
      {
        "number": "4",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply voltage, VREF + 0.02 V to 5.5 V (absolute max 6 V). Quiescent current typ 360 uA in active mode."
      },
      {
        "number": "5",
        "name": "VREF",
        "type": "output",
        "description": "Primary reference voltage output (3.3 V for REF2033). Sources/sinks up to ±20 mA with 10 mV typical dropout; stable with 0-10 uF output capacitance."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/ref2033.pdf",
        "pages": 37,
        "sha256": "b79fc315c8fa1a6c",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 5,
        "described": 5,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ref2033.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "720a6eab0024069bbee68e7cb4c3ff1149468a34611225cdc852662c5d0ec2b7",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ref2033-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "7b698ef106dbaa3ccd2fc5255d769a1d1438a2a0704d89c2ab085aeefaba5eab",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Type": "Dual-output voltage reference",
      "VREF": "3.3 V",
      "VBIAS": "VREF/2 (tracking)",
      "Initial accuracy": "+/-0.05% to 0.1%",
      "Temp drift": "8 ppm/C (max)",
      "Supply": "VREF + 0.2 V to 5.5 V",
      "Package": "SOT-23-5"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ref2033",
    "dual output voltage reference",
    "bias reference",
    "adc reference with midscale"
  ],
  "discovery_pitch": "TI REF2033 dual-output voltage reference (SOT-23-5) with datasheet-verified pinout, KiCad symbol/footprint/3D, and full provenance.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ref2033.kicad_sym",
    "ref2033.kicad_mod",
    "ref2033.glb",
    "ref2033.step",
    "ref2033.lbr",
    "docs/hero.png",
    "docs/ref2033-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ref2033-etched.step"
  ],
  "variants": [
    {
      "mpn": "REF2033AIDDFR (SOT-23-5)",
      "kind": "packaging"
    },
    {
      "mpn": "REF2030AIDDFR (3.0 V variant)",
      "kind": "unknown"
    },
    {
      "mpn": "REF2025AIDDFR (2.5 V variant)",
      "kind": "unknown"
    }
  ]
}