INA4181A1QPWRQ1

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  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Current Sense Amplifiers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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  "component": {
    "mpn": "INA4181A1QPWRQ1",
    "manufacturer": "Texas Instruments",
    "package": "TSSOP-20",
    "pin_count": 20,
    "category": "Amplifiers/Comparators",
    "subcategory": "Current Sense Amplifiers",
    "datasheet": "https://www.ti.com/cn/lit/gpn/ina181-q1",
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    "distributor_links": {
      "lcsc": 2876981,
      "digikey": "296-51188-2-ND",
      "mouser": "595-INA4181A1QPWRQ1"
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    "distributor_check": {
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    "pins": [
      {
        "number": "1",
        "name": "REF1",
        "type": "input",
        "description": "Channel 1 reference voltage input (range 0V to VS); sets the zero-current output level for bidirectional current sensing"
      },
      {
        "number": "2",
        "name": "OUT1",
        "type": "output",
        "description": "Channel 1 analog output voltage proportional to sensed current magnitude and direction"
      },
      {
        "number": "3",
        "name": "IN–1",
        "type": "input",
        "description": "Channel 1 negative current sensing input; connect to load side of sense resistor (high-side) or ground side (low-side)"
      },
      {
        "number": "4",
        "name": "IN+1",
        "type": "input",
        "description": "Channel 1 positive current sensing input; connect to bus voltage side of sense resistor (high-side) or load side (low-side)"
      },
      {
        "number": "5",
        "name": "VS",
        "type": "power_in",
        "description": "Analog power supply pin (range 2.7V to 5.5V)"
      },
      {
        "number": "6",
        "name": "IN+2",
        "type": "input",
        "description": "Channel 2 positive current sensing input; connect to bus voltage side of sense resistor (high-side) or load side (low-side)"
      },
      {
        "number": "7",
        "name": "IN–2",
        "type": "input",
        "description": "Channel 2 negative current sensing input; connect to load side of sense resistor (high-side) or ground side (low-side)"
      },
      {
        "number": "8",
        "name": "OUT2",
        "type": "output",
        "description": "Channel 2 analog output voltage proportional to sensed current magnitude and direction"
      },
      {
        "number": "9",
        "name": "REF2",
        "type": "input",
        "description": "Channel 2 reference voltage input (range 0V to VS); sets the zero-current output level for bidirectional current sensing"
      },
      {
        "number": "10",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection; pin may be left floating or connected to any voltage between VS and ground"
      },
      {
        "number": "11",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection; pin may be left floating or connected to any voltage between VS and ground"
      },
      {
        "number": "12",
        "name": "REF3",
        "type": "input",
        "description": "Channel 3 reference voltage input (range 0V to VS); sets the zero-current output level for bidirectional current sensing"
      },
      {
        "number": "13",
        "name": "OUT3",
        "type": "output",
        "description": "Channel 3 analog output voltage proportional to sensed current magnitude and direction"
      },
      {
        "number": "14",
        "name": "IN–3",
        "type": "input",
        "description": "Channel 3 negative current sensing input; connect to load side of sense resistor (high-side) or ground side (low-side)"
      },
      {
        "number": "15",
        "name": "IN+3",
        "type": "input",
        "description": "Channel 3 positive current sensing input; connect to bus voltage side of sense resistor (high-side) or load side (low-side)"
      },
      {
        "number": "16",
        "name": "GND",
        "type": "power_in",
        "description": "Analog ground reference pin"
      },
      {
        "number": "17",
        "name": "IN+4",
        "type": "input",
        "description": "Channel 4 positive current sensing input; connect to bus voltage side of sense resistor (high-side) or load side (low-side)"
      },
      {
        "number": "18",
        "name": "IN–4",
        "type": "input",
        "description": "Channel 4 negative current sensing input; connect to load side of sense resistor (high-side) or ground side (low-side)"
      },
      {
        "number": "19",
        "name": "OUT4",
        "type": "output",
        "description": "Channel 4 analog output voltage proportional to sensed current magnitude and direction"
      },
      {
        "number": "20",
        "name": "REF4",
        "type": "input",
        "description": "Channel 4 reference voltage input (range 0V to VS); sets the zero-current output level for bidirectional current sensing"
      }
    ],
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        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 31,
        "cost_usd": 0.2363,
        "at": "2026-10-03T08:55:19"
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      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/ina181-q1",
        "pages": 57,
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        "total": 20,
        "described": 20,
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