INA155E

{
  "slug": "ina155e",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Instrumentation Amplifiers, VSSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "amplifiers-comparators",
    "ina155e",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ina155e.kicad_sym",
    "ina155e.kicad_mod",
    "ina155e.glb",
    "ina155e.step",
    "ina155e.lbr",
    "docs/hero.png",
    "docs/ina155e-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ina155e-hero.glb",
    "ina155e-hero.overlay.json"
  ],
  "component": {
    "mpn": "INA155E",
    "manufacturer": "Texas Instruments",
    "package": "VSSOP-8",
    "pin_count": 8,
    "category": "Amplifiers/Comparators",
    "subcategory": "Instrumentation Amplifiers",
    "datasheet": "https://www.ti.com/cn/lit/gpn/ina155",
    "parts": {
      "symbol": "ina155e.kicad_sym",
      "footprint": "ina155e.kicad_mod",
      "model_3d": "ina155e-hero.glb",
      "model_3d_plain": "ina155e.glb",
      "model_3d_step": "ina155e-etched.step",
      "model_3d_step_plain": "ina155e.step",
      "lbr": "ina155e.lbr"
    },
    "distributor_links": {
      "lcsc": "C2869149"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T16:48:55Z",
      "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 pin: leave open for G = 10, connect directly to pin 8 for G = 50, or place a resistor between pins 1 and 8 for 10 < G < 50, keeping the pin 1 to pin 8 connection low impedance (20Ω can cause a 0.2% gain error shift)."
      },
      {
        "number": "2",
        "name": "VIN–",
        "type": "power_in",
        "description": "Inverting signal input, with a safe input voltage of (V-) - 0.5V to (V+) + 0.5V and an input bias current return path required; inputs beyond the supply rails by more than 500mV should be limited to 10mA."
      },
      {
        "number": "3",
        "name": "VIN+",
        "type": "power_in",
        "description": "Non-inverting signal input, with common-mode range of 0.3V to 5.2V at VS = 5.5V and 0.2V to 2.5V at VS = 2.7V, and an input bias current return path required."
      },
      {
        "number": "4",
        "name": "V–",
        "type": "power_in",
        "description": "Negative power supply terminal (ground in single-supply operation), with the device specified for a total supply of +2.7V to +5.5V."
      },
      {
        "number": "5",
        "name": "Ref",
        "type": "input",
        "description": "Output reference terminal normally set to VS/2 that must be driven low impedance for good CMRR, since 200Ω in series with Ref degrades a typical device to about 80dB CMRR."
      },
      {
        "number": "6",
        "name": "VOUT",
        "type": "output",
        "description": "Output referred to the Ref terminal, swinging to within 10mV of either rail with RL = 10kΩ and rated for ±50mA short-circuit current to ground."
      },
      {
        "number": "7",
        "name": "V+",
        "type": "power_in",
        "description": "Positive power supply terminal, specified for +2.7V to +5.5V with quiescent current of 1.7mA typical and 2.1mA maximum at 25°C."
      },
      {
        "number": "8",
        "name": "RG",
        "type": "passive",
        "description": "Second gain-setting pin, used with pin 1 exactly as described for pin 1: open for G = 10, shorted to pin 1 for G = 50, or joined by a resistor for intermediate gains."
      }
    ],
    "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: Pin-to-name mapping was reconstructed from the text extraction of the top-view drawing on page 4 (la; Package naming differs: the datasheet's top view and ordering table call this package MSOP-8 (E) wit; Pin descriptions for VIN+, V+ and Ref use specified values from the typical-value and specification ",
          "1/8 pins cited to the wrong page (name found elsewhere): ['3:VIN+@p4']"
        ],
        "pages_sent": 17,
        "cost_usd": 0.0983,
        "at": "2026-10-08T16:48:34"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/ina155",
        "pages": 17,
        "sha256": "477f3b4451cfbf8f",
        "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": "ina155e.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.1,
          2.0,
          0.85
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "353552981eef35cb93635057d4aeb89aef22648c77af6fd095e328bfe6b834bd",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ina155e-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.1,
          2.0,
          0.85
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "7059942a7b466baa9db47fbd9eeb4f404c61b72a0b1f5a98af0f359629f04665",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}