LM321A-TR

{
  "schema_version": 1,
  "type": "component",
  "slug": "lm321a-tr",
  "title": "LM321A-TR",
  "brief": "3PEAK Operational Amplifier, SOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "op-amp-cmp",
    "lm321a-tr"
  ],
  "component": {
    "mpn": "LM321A-TR",
    "manufacturer": "3PEAK",
    "package": "SOT-23-5",
    "pin_count": 5,
    "category": "Op-amp/Cmp",
    "subcategory": "Operational Amplifier",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/8135d02857e49e19ef4e9d9212547558.pdf",
    "parts": {
      "symbol": "lm321a-tr.kicad_sym",
      "footprint": "lm321a-tr.kicad_mod",
      "model_3d": "lm321a-tr-etched.glb",
      "model_3d_plain": "lm321a-tr.glb",
      "model_3d_step": "lm321a-tr-etched.step",
      "model_3d_step_plain": "lm321a-tr.step",
      "lbr": "lm321a-tr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2842352"
    },
    "pins": [
      {
        "number": "1",
        "name": "+IN",
        "type": "input",
        "description": "Non-inverting input of the op-amp. Common-mode input voltage range extends from (V-) to (V+)-2V, supporting operation down to the negative rail."
      },
      {
        "number": "2",
        "name": "-Vs",
        "type": "power_in",
        "description": "Negative supply rail (V-). Typically ground in single-supply operation; supports single-supply operation from 3V up to 36V, or split-supply operation up to ±18V."
      },
      {
        "number": "3",
        "name": "-IN",
        "type": "input",
        "description": "Inverting input of the op-amp. Typical input bias current 60pA, input offset voltage ±3mV maximum."
      },
      {
        "number": "4",
        "name": "OUT",
        "type": "output",
        "description": "Rail-to-rail op-amp output. Output short-circuit current typ 30mA; withstands indefinite short-circuit to either rail (subject to thermal limits)."
      },
      {
        "number": "5",
        "name": "+Vs",
        "type": "power_in",
        "description": "Positive supply rail (V+). Total supply voltage (V+ - V-) from 3V to 36V (40V absolute maximum). Decouple to V- with a local bypass capacitor near the pin."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/8135d02857e49e19ef4e9d9212547558.pdf",
        "pages": 16,
        "sha256": "084c1fd820d05005",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 5,
        "described": 5,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -1.1375,
        -0.95
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-23-5@sha256:455a3f7c3e5eb5b8",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "lm321a-tr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "720a6eab0024069bbee68e7cb4c3ff1149468a34611225cdc852662c5d0ec2b7",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm321a-tr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "ad24caabd2d0081abc88e94d04e2fdb86ea59a587c188d0f31c496e6d5c2cabd",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "3PEAK",
      "Package": "SOT-23-5",
      "Category": "Op-amp/Cmp",
      "Pins": "5"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "084c1fd820d05005",
      "rows": [
        {
          "name": "Supply Voltage Range",
          "symbol": "VS",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 3,
          "typ": null,
          "max": 36,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Current per Amplifier",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 110,
          "max": 200,
          "conditions": "VS = 30V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Current per Amplifier, Operating Range",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 250,
          "conditions": "VS = 30V; Operating Range",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Current per Amplifier",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 100,
          "max": 150,
          "conditions": "VS = 5V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Current per Amplifier, Operating Range",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "VS = 5V; Operating Range",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Rejection Ratio",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": 85,
          "typ": 120,
          "max": null,
          "conditions": "VS = 5V to 36V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Rejection Ratio, Operating Range",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": 80,
          "typ": null,
          "max": null,
          "conditions": "VS = 5V to 36V; Operating Range",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input Offset Voltage",
          "symbol": "VOS",
          "kind": "electrical",
          "unit": "mV",
          "min": -3,
          "typ": 0.1,
          "max": 3,
          "conditions": "VS = 30V, VCM = 0V to 28V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input Offset Voltage, Operating Range",
          "symbol": "VOS",
          "kind": "electrical",
          "unit": "mV",
          "min": -7,
          "typ": null,
          "max": 7,
          "conditions": "VS = 30V, VCM = 0V to 28V; Operating Range",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input Offset Voltage Drift",
          "symbol": "VOS TC",
          "kind": "temperature_coefficient",
          "unit": "μV/°C",
          "min": null,
          "typ": null,
          "max": 7,
          "conditions": "Operating Range",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input Bias Current, Operating Range",
          "symbol": "IB",
          "kind": "electrical",
          "unit": "pA",
          "min": null,
          "typ": null,
          "max": 600,
          "conditions": "Operating Range",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Different Input Current",
          "symbol": "IIN",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "VS = 36V, VID = 36V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Different Input Current, Operating Range",
          "symbol": "IIN",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "VS = 36V, VID = 36V; Operating Range",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Open-loop Voltage Gain",
          "symbol": "Av",
          "kind": "electrical",
          "unit": "dB",
          "min": 95,
          "typ": 110,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Open-loop Voltage Gain, Operating Range",
          "symbol": "Av",
          "kind": "electrical",
          "unit": "dB",
          "min": 90,
          "typ": null,
          "max": null,
          "conditions": "Operating Range",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Common Mode Rejection Ratio",
          "symbol": "CMRR",
          "kind": "electrical",
          "unit": "dB",
          "min": 75,
          "typ": 120,
          "max": null,
          "conditions": "VCM = 0V to 28V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Common Mode Rejection Ratio, Operating Range",
          "symbol": "CMRR",
          "kind": "electrical",
          "unit": "dB",
          "min": 70,
          "typ": 90,
          "max": null,
          "conditions": "VCM = 0V to 28V; Operating Range",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage Swing from Positive and Negative Rail",
          "symbol": "",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 200,
          "max": 300,
          "conditions": "RLOAD = 10kΩ to VS/2",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage Swing from Positive and Negative Rail, Operating Range",
          "symbol": "",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 700,
          "conditions": "RLOAD = 10kΩ to VS/2; Operating Range",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage Swing from Positive and Negative Rail",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.1,
          "max": 1.3,
          "conditions": "RLOAD = 2kΩ to VS/2",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage Swing from Positive and Negative Rail, Operating Range",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "RLOAD = 2kΩ to VS/2; Operating Range",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage Swing from Negative Rail",
          "symbol": "",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 5,
          "max": 10,
          "conditions": "VS = 5V, RLOAD = 10kΩ to 0V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output Short-Circuit Current",
          "symbol": "ISC",
          "kind": "electrical",
          "unit": "mA",
          "min": 25,
          "typ": 30,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output Short-Circuit Current, Operating Range",
          "symbol": "ISC",
          "kind": "electrical",
          "unit": "mA",
          "min": 15,
          "typ": null,
          "max": null,
          "conditions": "Operating Range",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Supply Voltage (+VS)-(-VS)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input Current: +IN, -IN",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -10,
          "typ": null,
          "max": 10,
          "conditions": "Note 2",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating Temperature Range",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Maximum Junction Temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Lead Temperature (Soldering)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "10 sec",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "ESD Human Body Model",
          "symbol": "HBM",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": 3,
          "typ": null,
          "max": null,
          "conditions": "ANSI/ESDA/JEDEC JS-001",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "ESD Charged Device Model",
          "symbol": "CDM",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "ANSI/ESDA/JEDEC JS-002",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance, Junction-to-Ambient",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 250,
          "max": null,
          "conditions": "5-Pin SOT23",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance, Junction-to-Case",
          "symbol": "θJC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 81,
          "max": null,
          "conditions": "5-Pin SOT23",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input Bias Current",
          "symbol": "IB",
          "kind": "electrical",
          "unit": "pA",
          "min": null,
          "typ": 60,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input Offset Current",
          "symbol": "IOS",
          "kind": "electrical",
          "unit": "pA",
          "min": null,
          "typ": 60,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Gain-Bandwidth Product",
          "symbol": "GBW",
          "kind": "electrical",
          "unit": "MHz",
          "min": null,
          "typ": 0.9,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Slew Rate",
          "symbol": "SR",
          "kind": "electrical",
          "unit": "V/μs",
          "min": null,
          "typ": 0.5,
          "max": null,
          "conditions": "G = 1, 2V step",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Settling Time, 0.1%",
          "symbol": "tS",
          "kind": "timing",
          "unit": "μs",
          "min": null,
          "typ": 4,
          "max": null,
          "conditions": "G = 1, 2V step",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Settling Time, 0.01%",
          "symbol": "tS",
          "kind": "timing",
          "unit": "μs",
          "min": null,
          "typ": 5,
          "max": null,
          "conditions": "G = 1, 2V step",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Phase Margin",
          "symbol": "PM",
          "kind": "electrical",
          "unit": "°",
          "min": null,
          "typ": 60,
          "max": null,
          "conditions": "VS = 30V, RL=1K, CL=100pF",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Gain Margin",
          "symbol": "GM",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 15,
          "max": null,
          "conditions": "VS = 30V, RL=1K, CL=100pF",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Channel Separation",
          "symbol": "",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 120,
          "max": null,
          "conditions": "f = 1 kHz to 20 kHz",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Input Voltage Noise",
          "symbol": "EN",
          "kind": "electrical",
          "unit": "μVRMS",
          "min": null,
          "typ": 3,
          "max": null,
          "conditions": "f = 0.1Hz to 10Hz",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Input Voltage Noise Density",
          "symbol": "eN",
          "kind": "electrical",
          "unit": "nV/√Hz",
          "min": null,
          "typ": 70,
          "max": null,
          "conditions": "f = 1kHz",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Input Current Noise",
          "symbol": "iN",
          "kind": "electrical",
          "unit": "fA/√Hz",
          "min": null,
          "typ": 3,
          "max": null,
          "conditions": "f = 1kHz",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Total Harmonic Distortion and Noise",
          "symbol": "THD+N",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 0.001,
          "max": null,
          "conditions": "f = 1kHz, G =1, RL = 10kΩ, VOUT = 6VRMS",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Input Capacitance",
          "symbol": "CIN",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 5,
          "max": null,
          "conditions": "Differential Mode",
          "source_page": 5,
          "source": "datasheet"
        }
      ]
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "lm321a-tr"
  ],
  "discovery_pitch": "LM321A-TR (3PEAK) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm321a-tr.kicad_sym",
    "lm321a-tr.kicad_mod",
    "lm321a-tr.glb",
    "lm321a-tr.step",
    "lm321a-tr-etched.step",
    "lm321a-tr.lbr",
    "docs/hero.png",
    "docs/lm321a-tr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "LM321A-TR",
      "kind": "packaging"
    },
    {
      "mpn": "LM321A-TRSR",
      "kind": "packaging"
    },
    {
      "mpn": "LM321A-TRCSR",
      "kind": "packaging"
    },
    {
      "mpn": "LM321A-TRTSR",
      "kind": "packaging"
    },
    {
      "mpn": "LM321A-TRVR",
      "kind": "packaging"
    },
    {
      "mpn": "LM321A-TRF1R",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-28T16:35:43.404Z"
}