INA240

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  "type": "component",
  "slug": "ina240",
  "title": "INA240",
  "brief": "TI bidirectional current-sense amplifier, SOIC-8. -4 to 80 V common-mode, enhanced PWM rejection. Datasheet-verified.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "amplifier",
    "current-sense",
    "instrumentation",
    "motor-control",
    "soic-8",
    "texas-instruments"
  ],
  "component": {
    "mpn": "INA240",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Amplifier",
    "subcategory": "Bidirectional current-sense amplifier",
    "datasheet": "https://www.ti.com/lit/ds/symlink/ina240.pdf",
    "parts": {
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      "footprint": "ina240.kicad_mod",
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    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection. Reserved - connect to ground or leave floating."
      },
      {
        "number": "2",
        "name": "IN+",
        "type": "input",
        "description": "Non-inverting differential analog input. Connect to the supply (high) side of the shunt resistor. Common-mode range −4 V to +80 V independent of VS."
      },
      {
        "number": "3",
        "name": "IN-",
        "type": "input",
        "description": "Inverting differential analog input. Connect to the load side of the shunt resistor. Shares the −4 V to +80 V common-mode range with IN+."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Analog ground / device ground return."
      },
      {
        "number": "5",
        "name": "VS",
        "type": "power_in",
        "description": "Positive supply, 2.7 V to 5.5 V. Bypass to GND with a 0.1 µF ceramic close to the pin. Quiescent current 1.8 mA typ, 2.4 mA max."
      },
      {
        "number": "6",
        "name": "REF2",
        "type": "input",
        "description": "Reference-2 input for setting the output midpoint. Valid input range 0 V to VS. Tie to VS or to a second reference to configure unidirectional or bidirectional output midpoint."
      },
      {
        "number": "7",
        "name": "REF1",
        "type": "input",
        "description": "Reference-1 input for setting the output midpoint. Valid input range 0 V to VS. Combined with REF2 to form the output offset per the Adjusting the Output Midpoint With the Reference Pins section."
      },
      {
        "number": "8",
        "name": "OUT",
        "type": "output",
        "description": "Buffered analog output voltage, VOUT = Gain × VSENSE + VREF, where Gain is 20/50/100/200 V/V for A1/A2/A3/A4. Swings from GND+10 mV to VS−0.2 V into 10 kΩ."
      }
    ],
    "provenance": {
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      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/ina240.pdf",
        "pages": 39,
        "sha256": "c9d26e72ebdb52a1",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
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    },
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
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        "checked": "2026-10-07",
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    ]
  },
  "metadata": {
    "specs": {
      "Type": "Bidirectional current-sense amplifier",
      "Common-mode range": "-4 V to +80 V",
      "Feature": "enhanced PWM rejection",
      "Gain": "20 / 50 / 100 / 200 V/V (by variant)",
      "Bandwidth": "400 kHz",
      "Reference": "REF pins (bidirectional zero)",
      "Supply voltage": "2.7-5.5 V",
      "Package": "SOIC-8"
    }
  },
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  "discovery_triggers": [
    "ina240",
    "current sense amplifier",
    "bidirectional current sense",
    "motor current sensing",
    "pwm current sense"
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  "discovery_pitch": "INA240 bidirectional current-sense amplifier (SOIC-8) with datasheet-verified pinout, KiCad symbol/footprint/3D, and full provenance.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
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  "variants": [
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      "mpn": "INA240A1D (SOIC-8, gain 20)",
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      "mpn": "INA240A2D (SOIC-8, gain 50)",
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}