OPA1678

{
  "schema_version": 1,
  "type": "component",
  "slug": "opa1678",
  "title": "OPA1678",
  "brief": "TI dual audio op-amp, SOIC-8. Low noise, low distortion, rail-to-rail output, 2.25-5.5 V. Datasheet-verified.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "amplifier",
    "op-amp",
    "audio",
    "low-distortion",
    "soic-8",
    "texas-instruments"
  ],
  "component": {
    "mpn": "OPA1678",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Amplifier",
    "subcategory": "Audio operational amplifier",
    "datasheet": "https://www.ti.com/lit/ds/symlink/opa1678.pdf",
    "parts": {
      "symbol": "opa1678.kicad_sym",
      "footprint": "opa1678.kicad_mod",
      "model_3d": "opa1678-etched.glb",
      "model_3d_plain": "opa1678.glb",
      "model_3d_step": "opa1678-etched.step",
      "model_3d_step_plain": "opa1678.step",
      "lbr": "opa1678.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "OUT A",
        "type": "output",
        "description": "Output of channel A op-amp. Rail-to-rail output stage swings within 800 mV of the supply rails into a 2-kΩ load."
      },
      {
        "number": "2",
        "name": "-IN A",
        "type": "input",
        "description": "Inverting input of channel A op-amp. High-impedance input, typical input bias current 10 pA."
      },
      {
        "number": "3",
        "name": "+IN A",
        "type": "input",
        "description": "Noninverting input of channel A op-amp. High-impedance input, typical input bias current 10 pA."
      },
      {
        "number": "4",
        "name": "V-",
        "type": "power_in",
        "description": "Negative (lowest) power supply. Operates from -18 V to 0 V in split-supply mode or tied to GND in single-supply operation (total supply 4.5 V to 36 V)."
      },
      {
        "number": "5",
        "name": "+IN B",
        "type": "input",
        "description": "Noninverting input of channel B op-amp. High-impedance input, typical input bias current 10 pA."
      },
      {
        "number": "6",
        "name": "-IN B",
        "type": "input",
        "description": "Inverting input of channel B op-amp. High-impedance input, typical input bias current 10 pA."
      },
      {
        "number": "7",
        "name": "OUT B",
        "type": "output",
        "description": "Output of channel B op-amp. Rail-to-rail output stage swings within 800 mV of the supply rails into a 2-kΩ load."
      },
      {
        "number": "8",
        "name": "V+",
        "type": "power_in",
        "description": "Positive (highest) power supply. ±2.25 V to ±18 V split, or 4.5 V to 36 V single-supply with V- at GND. Quiescent current ~2 mA per channel."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/opa1678.pdf",
        "pages": 56,
        "sha256": "4072daad4ebc4ec9",
        "source_tier": "mfr"
      },
      "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": "opa1678.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "opa1678-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "490b131a52b94b22b42737c1b2dba446c3d2e2c3ff3f8af4dd21787a1445f73b",
        "checked": "2026-11-03",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Type": "Dual audio op-amp",
      "Input noise": "4.5 nV/rtHz",
      "THD+N": "0.00006% (typ)",
      "Gain-bandwidth": "16 MHz",
      "Output": "Rail-to-rail",
      "Supply": "2.25-5.5 V",
      "Package": "SOIC-8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "opa1678",
    "audio op amp",
    "low noise op amp",
    "hifi op amp dual"
  ],
  "discovery_pitch": "TI OPA1678 dual audio op-amp (SOIC-8) with datasheet-verified pinout, KiCad symbol/footprint/3D, and full provenance.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "opa1678.kicad_sym",
    "opa1678.kicad_mod",
    "opa1678.glb",
    "opa1678.step",
    "opa1678.lbr",
    "docs/hero.png",
    "docs/opa1678-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "opa1678-etched.step"
  ],
  "variants": [
    {
      "mpn": "OPA1678IDR (SOIC-8)",
      "kind": "packaging"
    },
    {
      "mpn": "OPA1678IDGKR (VSSOP-8)",
      "kind": "packaging"
    },
    {
      "mpn": "OPA1679IDR (quad, SOIC-14)",
      "kind": "unknown"
    }
  ]
}