INA321E

{
  "schema_version": 1,
  "type": "component",
  "slug": "ina321e",
  "title": "INA321E",
  "brief": "Texas Instruments Instrumentation Amplifiers, VSSOP-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",
    "amplifiers-comparators",
    "ina321e",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "INA321E",
    "manufacturer": "Texas Instruments",
    "package": "VSSOP-8",
    "pin_count": 8,
    "category": "Amplifiers/Comparators",
    "subcategory": "Instrumentation Amplifiers",
    "datasheet": "https://www.ti.com/cn/lit/gpn/ina321",
    "parts": {
      "symbol": "ina321e.kicad_sym",
      "footprint": "ina321e.kicad_mod",
      "model_3d": "ina321e-hero.glb",
      "model_3d_plain": "ina321e.glb",
      "model_3d_step": "ina321e-etched.step",
      "model_3d_step_plain": "ina321e.step",
      "lbr": "ina321e.lbr"
    },
    "distributor_links": {
      "lcsc": "C2869118"
    },
    "distributor_check": {
      "checked_at": "2026-10-11T11:20:50Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "RG",
        "type": "passive",
        "description": "Gain-setting connection; the external resistors on RG, REF and VOUT set gain as G = 5 + 5(R2/R1), and resistor mismatch or tempco adds directly to gain error."
      },
      {
        "number": "2",
        "name": "VIN−",
        "type": "power_in",
        "description": "Inverting differential input; it needs a DC bias-current return path, and inputs that swing more than 0.5V beyond the supply rails should be limited to 10mA or less."
      },
      {
        "number": "3",
        "name": "VIN+",
        "type": "power_in",
        "description": "Non-inverting differential input; it needs a DC bias-current return path, and inputs that swing more than 0.5V beyond the supply rails should be limited to 10mA or less."
      },
      {
        "number": "4",
        "name": "V−",
        "type": "power_in",
        "description": "Negative power supply; the device is specified for V+ to V− from +2.7V to +5.5V, with an absolute maximum of 7.5V."
      },
      {
        "number": "5",
        "name": "REF",
        "type": "input",
        "description": "Reference terminal that sets the zero-output level and must be low impedance (as little as 160Ω in series degrades CMRR to 80dB), and it must be at least 1.2V below the positive supply rail."
      },
      {
        "number": "6",
        "name": "VOUT",
        "type": "output",
        "description": "Output referred to the REF terminal, with rail-to-rail swing for gains of 10 or greater, and optimized for loads of 10kΩ or greater."
      },
      {
        "number": "7",
        "name": "V+",
        "type": "power_in",
        "description": "Positive power supply; the device is specified from +2.7V to +5.5V (operating voltage range +2.5V to +5.5V), with an absolute maximum of 7.5V between V+ and V−."
      },
      {
        "number": "8",
        "name": "Shutdown",
        "type": "input",
        "description": "Shutdown control, nominally tied to V+; pulling it below 0.8V on a 5V supply puts the amplifier into sleep mode with less than 1µA quiescent current."
      }
    ],
    "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 datasheet calls this package MSOP-8 (DGK) in the ordering table and pin figure, while the packag; The pin configuration figure gives names and numbers as a diagram, not a table. Pin numbers were ass; The datasheet does not state KiCad-style types explicitly. RG is typed passive because it is a resis"
        ],
        "pages_sent": 25,
        "cost_usd": 0.1038,
        "at": "2026-10-11T11:20:33"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/ina321",
        "pages": 25,
        "sha256": "2363d452254a2876",
        "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": "ina321e.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.1,
          2,
          0.85
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "353552981eef35cb93635057d4aeb89aef22648c77af6fd095e328bfe6b834bd",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ina321e-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.1,
          2,
          0.85
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "0816048c8df1e0487b33f1030e509a66a875e4319c4f6f3b2b69c350334527ff",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "VSSOP-8",
      "Category": "Amplifiers/Comparators",
      "Pins": "8"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ina321e"
  ],
  "discovery_pitch": "INA321E (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",
    "ina321e.kicad_sym",
    "ina321e.kicad_mod",
    "ina321e.glb",
    "ina321e.step",
    "ina321e.lbr",
    "docs/hero.png",
    "docs/ina321e-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ina321e-hero.glb",
    "ina321e-hero.overlay.json"
  ],
  "visibility": {
    "public": true
  }
}