INA125U

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  "slug": "ina125u",
  "title": "INA125U",
  "brief": "Texas Instruments Instrumentation Amplifiers, SOIC-16. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
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  "component": {
    "mpn": "INA125U",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-16",
    "pin_count": 16,
    "category": "Amplifiers/Comparators",
    "subcategory": "Instrumentation Amplifiers",
    "datasheet": "https://www.ti.com/cn/lit/gpn/ina125",
    "parts": {
      "symbol": "ina125u.kicad_sym",
      "footprint": "ina125u.kicad_mod",
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      "lbr": "ina125u.lbr"
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    "distributor_links": {
      "lcsc": "C2868334",
      "digikey": "INA125U-ND"
    },
    "distributor_check": {
      "checked_at": "2026-10-21T18:17:59Z",
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        "pn": "INA125U-ND",
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      "mouser": {
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    "pins": [
      {
        "number": "1",
        "name": "V+",
        "type": "power_in",
        "description": "Positive power supply voltage: 2.7V to 36V single supply or ±1.35V to ±18V dual supply."
      },
      {
        "number": "2",
        "name": "SLEEP",
        "type": "input",
        "description": "Logic input for shutdown mode; logic low (≤100mV) enables sleep mode with quiescent current dropping to approximately 1µA; wake-up time 150µs."
      },
      {
        "number": "3",
        "name": "V–",
        "type": "power_in",
        "description": "Negative power supply voltage; connected to ground in single supply operation or to negative supply in dual supply operation."
      },
      {
        "number": "4",
        "name": "VREFOUT",
        "type": "output",
        "description": "Precision voltage reference output; connect to VREFBG (1.24V), VREF2.5, VREF5, or VREF10 pins to select output reference voltage; recommended to connect even when reference not used to avoid saturating amplifier."
      },
      {
        "number": "5",
        "name": "IAREF",
        "type": "input",
        "description": "Instrumentation amplifier reference terminal; must be connected to low impedance ground or reference voltage for proper common-mode rejection; voltage applied is added to output signal."
      },
      {
        "number": "6",
        "name": "VIN+",
        "type": "input",
        "description": "Non-inverting differential input; protected for ±40V input voltage; input bias current 10-25nA typical; must remain within specified input common-mode voltage range."
      },
      {
        "number": "7",
        "name": "VIN–",
        "type": "input",
        "description": "Inverting differential input; protected for ±40V input voltage; input bias current 10-25nA typical; must remain within specified input common-mode voltage range."
      },
      {
        "number": "8",
        "name": "RG",
        "type": "passive",
        "description": "External gain-setting resistor connection; connect resistor between pin 8 and pin 9 to set gain from 4 to 10,000 per equation G = 4 + 60kΩ/RG."
      },
      {
        "number": "9",
        "name": "VREF10",
        "type": "passive",
        "description": "Internal 10V reference node; connect VREFOUT to this pin to select 10V precision reference voltage with ±0.5% initial accuracy and ±35ppm/°C drift."
      },
      {
        "number": "10",
        "name": "VREF5",
        "type": "passive",
        "description": "Internal 5V reference node; connect VREFOUT to this pin to select 5V precision reference voltage with ±0.5% initial accuracy and ±35ppm/°C drift."
      },
      {
        "number": "11",
        "name": "VREF2.5",
        "type": "passive",
        "description": "Internal 2.5V reference node; connect VREFOUT to this pin to select 2.5V precision reference voltage with ±0.5% initial accuracy and ±35ppm/°C drift."
      },
      {
        "number": "12",
        "name": "VREFBG",
        "type": "passive",
        "description": "Bandgap reference voltage node (1.24V ±0.5%); connect VREFOUT to this pin to output the precision bandgap reference voltage."
      },
      {
        "number": "13",
        "name": "VREFCOM",
        "type": "power_in",
        "description": "Reference common terminal; approximately 180µA flows out of this terminal; connect through low impedance path to sensor common to avoid ground loop problems."
      },
      {
        "number": "14",
        "name": "VO",
        "type": "output",
        "description": "Single-ended amplifier output; output voltage swing (V+)-0.9V to (V-)+0.4V for ±15V supplies; short-circuit current ±9 to ±12mA; load capacitance up to 1000pF."
      },
      {
        "number": "15",
        "name": "Sense",
        "type": "input",
        "description": "Bridge output sense connection for bridge measurement and transducer applications; enables feedback path for gain setting and error correction."
      },
      {
        "number": "16",
        "name": "RG",
        "type": "passive",
        "description": "External gain-setting resistor connection; second terminal of gain-setting resistor connected between pin 8 and pin 16 (or pin 9 per functional description)."
      }
    ],
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      "Manufacturer": "Texas Instruments",
      "Package": "SOIC-16",
      "Category": "Amplifiers/Comparators",
      "Pins": "16"
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