AD623

{
  "schema_version": 1,
  "type": "component",
  "slug": "ad623",
  "title": "AD623",
  "brief": "ADI single-supply instrumentation amplifier, SOIC-8. Gain set by one resistor, rail-to-rail output, 3-12 V. Datasheet-verified.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "amplifier",
    "instrumentation-amplifier",
    "single-supply",
    "soic-8",
    "analog-devices"
  ],
  "component": {
    "mpn": "AD623",
    "manufacturer": "Analog Devices",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Amplifier",
    "subcategory": "Instrumentation amplifier",
    "datasheet": "https://www.analog.com/media/en/technical-documentation/data-sheets/AD623.pdf",
    "parts": {
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      "footprint": "ad623.kicad_mod",
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      "lbr": "ad623.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "-RG",
        "type": "passive",
        "description": "Inverting terminal of the external gain-setting resistor R_G. Connect R_G between Pin 1 and Pin 8 to set gain G = 1 + 100 kΩ/R_G (1 to 1000). Leave open for unity gain."
      },
      {
        "number": "2",
        "name": "-IN",
        "type": "input",
        "description": "Inverting in-amp input. Differential input pair with Pin 3 (+IN); common-mode range extends 150 mV below -V_S. Input bias current typ 17 nA."
      },
      {
        "number": "3",
        "name": "+IN",
        "type": "input",
        "description": "Noninverting in-amp input. Differential input pair with Pin 2 (-IN); common-mode range extends 150 mV below -V_S. Input bias current typ 17 nA."
      },
      {
        "number": "4",
        "name": "-VS",
        "type": "power_in",
        "description": "Negative supply terminal. Connect to ground for single-supply operation (2.7 V to 12 V total) or to a negative rail for dual-supply operation (±2.5 V to ±6 V). Quiescent current 550 µA max."
      },
      {
        "number": "5",
        "name": "REF",
        "type": "input",
        "description": "In-amp output reference input. Sets the DC offset of the output; drive from a low-impedance source. V_REF establishes the common-mode voltage of the output signal."
      },
      {
        "number": "6",
        "name": "OUTPUT",
        "type": "output",
        "description": "In-amp output. Rail-to-rail swing; with R_L = 10 kΩ, output swings to within 0.2 V of each rail. 800 kHz small-signal bandwidth at G = 1."
      },
      {
        "number": "7",
        "name": "+VS",
        "type": "power_in",
        "description": "Positive supply terminal. Total supply (+V_S to -V_S) 2.7 V to 12 V. Bypass locally with a 0.1 µF ceramic capacitor to ground."
      },
      {
        "number": "8",
        "name": "+RG",
        "type": "passive",
        "description": "Noninverting terminal of the external gain-setting resistor R_G. Connect R_G between Pin 1 and Pin 8; leave open for G = 1."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.analog.com/media/en/technical-documentation/data-sheets/AD623.pdf",
        "pages": 32,
        "sha256": "44f12008011b61f7",
        "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"
    },
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        "file": "ad623.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": "ad623-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
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        "sha256": "9666c90004ad6ae7c523fe424bf66798d67ff4a1ff997a6aad816103f06cb838",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Type": "Instrumentation amplifier",
      "Gain": "1 to 1000 (one external resistor)",
      "Supply": "Single 3-12 V or dual +/-2.5 to +/-6 V",
      "Output": "Rail-to-rail",
      "CMRR": "90 dB (min, G=1)",
      "Supply current": "575 uA (max)",
      "Package": "SOIC-8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ad623",
    "instrumentation amplifier",
    "in-amp single supply",
    "bridge amplifier ic"
  ],
  "discovery_pitch": "ADI AD623 single-supply instrumentation amplifier (SOIC-8) with datasheet-verified pinout, KiCad symbol/footprint/3D, and full provenance.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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    "path": "docs/hero.png"
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    "ad623.lbr",
    "docs/hero.png",
    "docs/ad623-datasheet.pdf",
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}