COS128UA

{
  "schema_version": 1,
  "type": "component",
  "slug": "cos128ua",
  "title": "COS128UA",
  "brief": "COSINE Instrumentation OpAmps, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "op-amp-cmp",
    "cos128ua"
  ],
  "component": {
    "mpn": "COS128UA",
    "manufacturer": "COSINE",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Op-amp/Cmp",
    "subcategory": "Instrumentation OpAmps",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2407101706_COSINE-COS128UA_C3008546.pdf",
    "parts": {
      "symbol": "cos128ua.kicad_sym",
      "footprint": "cos128ua.kicad_mod",
      "model_3d": "cos128ua-etched.glb",
      "model_3d_plain": "cos128ua.glb",
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      "lbr": "cos128ua.lbr"
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    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "RG",
        "type": "passive",
        "description": "Gain setting pin. Connect an external gain resistor RG between pin 1 and pin 8 to set voltage gain G = 1 + 50kΩ/RG (COS128). Leave open (NC) for unity gain."
      },
      {
        "number": "2",
        "name": "VIN-",
        "type": "input",
        "description": "Inverting (negative) analog input to the instrumentation amplifier. Diode-clamped to the supply rails; input signals exceeding rails by >0.5V should be current-limited to ≤10mA. Bias current ±2nA typ."
      },
      {
        "number": "3",
        "name": "VIN+",
        "type": "input",
        "description": "Non-inverting (positive) analog input to the instrumentation amplifier. Diode-clamped to supply rails; input signals exceeding rails by >0.5V should be current-limited to ≤10mA. Bias current ±2nA typ."
      },
      {
        "number": "4",
        "name": "-VS",
        "type": "power_in",
        "description": "Negative power supply pin. Operating range ±2.25V to ±18V (dual supply) or ground for single-supply operation. Bypass to ground with a 0.1µF ceramic capacitor close to the pin."
      },
      {
        "number": "5",
        "name": "REF",
        "type": "input",
        "description": "Reference input pin. Sets the DC offset of the output; must be driven by a low-impedance source or tied to ground. Series resistance as small as 8Ω degrades CMR to ~80dB."
      },
      {
        "number": "6",
        "name": "VOUT",
        "type": "output",
        "description": "Amplifier output. Swings to within 1.1V of each supply rail with ±10mA typical load current; short-circuit current ±24mA. Output = G × (VIN+ − VIN−) + VREF."
      },
      {
        "number": "7",
        "name": "+VS",
        "type": "power_in",
        "description": "Positive power supply pin. Operating range ±2.25V to ±18V dual, or +4.5V to +36V single supply. Bypass with a 0.1µF ceramic capacitor close to the pin; 2.2µF tantalum optional for better performance. Quiescent current 1.0mA typ."
      },
      {
        "number": "8",
        "name": "RG",
        "type": "passive",
        "description": "Gain setting pin. Connect an external gain resistor RG between pin 1 and pin 8 to set voltage gain G = 1 + 50kΩ/RG (COS128). Leave open (NC) for unity gain."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2407101706_COSINE-COS128UA_C3008546.pdf",
        "pages": 8,
        "sha256": "e35a1a4eec057f26",
        "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": "cos128ua.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "COSINE",
      "Package": "SOP-8",
      "Category": "Op-amp/Cmp",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "e35a1a4eec057f26",
      "rows": [
        {
          "name": "Input Offset Voltage",
          "symbol": "VOS",
          "kind": "electrical",
          "unit": "μV",
          "min": -125,
          "typ": 25,
          "max": 125,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input Offset Voltage Drift",
          "symbol": "ΔVOS/ΔT",
          "kind": "temperature_coefficient",
          "unit": "μV/°C",
          "min": null,
          "typ": 0.2,
          "max": 1,
          "conditions": "-40 to 125°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input Bias Current",
          "symbol": "IB",
          "kind": "electrical",
          "unit": "nA",
          "min": -10,
          "typ": 2,
          "max": 10,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input Offset Current",
          "symbol": "IOS",
          "kind": "electrical",
          "unit": "nA",
          "min": -10,
          "typ": 1,
          "max": 10,
          "conditions": "",
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        },
        {
          "name": "Common-Mode Rejection Ratio",
          "symbol": "CMRR",
          "kind": "electrical",
          "unit": "dB",
          "min": 125,
          "typ": null,
          "max": null,
          "conditions": "G=100",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Gain Range",
          "symbol": "GR",
          "kind": "electrical",
          "unit": "V/V",
          "min": 1,
          "typ": null,
          "max": 10000,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Gain Error",
          "symbol": "GE",
          "kind": "electrical",
          "unit": "%",
          "min": -2,
          "typ": null,
          "max": 2,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output Current",
          "symbol": "IOUT",
          "kind": "electrical",
          "unit": "mA",
          "min": -10,
          "typ": null,
          "max": 10,
          "conditions": "VDROPOUT < 1.2 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Short-Circuit Current",
          "symbol": "ISC",
          "kind": "electrical",
          "unit": "mA",
          "min": -24,
          "typ": null,
          "max": 24,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating Voltage Range",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 2.25,
          "typ": null,
          "max": 18,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Rejection Ratio",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": 120,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Current / Amplifier",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 1,
          "max": 1.5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Gain Bandwidth Product",
          "symbol": "GBWP",
          "kind": "electrical",
          "unit": "MHz",
          "min": null,
          "typ": 1.5,
          "max": null,
          "conditions": "CL=100pF, RL=10kΩ",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Slew Rate",
          "symbol": "SR",
          "kind": "electrical",
          "unit": "V/μs",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "CL=100pF, RL=10kΩ, Av=1",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Voltage Noise Density",
          "symbol": "en",
          "kind": "electrical",
          "unit": "nV/√Hz",
          "min": null,
          "typ": 8,
          "max": null,
          "conditions": "f=1kHz",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Voltage (absolute max, +Vs to -Vs)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 36,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Differential Input Voltage Range",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -36,
          "typ": null,
          "max": 36,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output Current",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Junction Temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating Temperature Range",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "ESD Susceptibility, HBM",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 2000,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "DC Supply Voltage",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.5,
          "typ": null,
          "max": 18,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating ambient temperature",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Package Thermal Resistance, junction-to-ambient (SOP8)",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 155,
          "max": null,
          "conditions": "SOP8 package",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_pitch": "COS128UA (COSINE) component page with datasheet-verified CAD.",
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  "variants": [
    {
      "mpn": "COS128UAU",
      "kind": "packaging"
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    {
      "mpn": "COS128UA",
      "kind": "packaging"
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    {
      "mpn": "COS128UAC",
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    {
      "mpn": "COS128UAP",
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      "mpn": "COS128UAPA",
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  "updated_at": "2026-09-24T19:25:48.823Z"
}