main
Ray Set visibility: public b682b97 12d ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "ada4938-1acpz-r7",
  "title": "ADA4938-1ACPZ-R7",
  "brief": "Analog Devices Differential OpAmps, LFCSP-16(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "amplifiers",
    "ada4938-1acpz-r7",
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  "component": {
    "mpn": "ADA4938-1ACPZ-R7",
    "manufacturer": "Analog Devices",
    "package": "LFCSP-16(3x3)",
    "pin_count": 17,
    "category": "Amplifiers",
    "subcategory": "Differential OpAmps",
    "datasheet": "https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/1105/ADA4938-1%2C2.pdf",
    "parts": {
      "symbol": "ada4938-1acpz-r7.kicad_sym",
      "footprint": "ada4938-1acpz-r7.kicad_mod",
      "model_3d": "ada4938-1acpz-r7-hero.glb",
      "model_3d_plain": "ada4938-1acpz-r7-etched.glb",
      "model_3d_step": "ada4938-1acpz-r7-etched.step",
      "model_3d_step_plain": "ada4938-1acpz-r7.step",
      "lbr": "ada4938-1acpz-r7.lbr"
    },
    "distributor_links": {
      "lcsc": "C578942",
      "digikey": "505-ADA4938-1ACPZ-R7TR-ND",
      "mouser": "584-ADA4938-1ACPZ-R7"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T12:28:22Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "505-ADA4938-1ACPZ-R7TR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "584-ADA4938-1ACPZ-R7",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "−FB",
        "type": "passive",
        "description": "Negative output feedback pin, connected through the external feedback resistor to the summing node."
      },
      {
        "number": "2",
        "name": "+IN",
        "type": "input",
        "description": "Positive input summing node."
      },
      {
        "number": "3",
        "name": "−IN",
        "type": "input",
        "description": "Negative input summing node."
      },
      {
        "number": "4",
        "name": "+FB",
        "type": "passive",
        "description": "Positive output feedback pin, connected through the external feedback resistor to the summing node."
      },
      {
        "number": "5",
        "name": "+VS",
        "type": "power_in",
        "description": "Positive supply voltage (pins 5 to 8 are all +VS); supply range +5 V to ±5 V, 12 V absolute maximum."
      },
      {
        "number": "6",
        "name": "+VS",
        "type": "power_in",
        "description": "Positive supply voltage (pins 5 to 8 are all +VS); supply range +5 V to ±5 V, 12 V absolute maximum."
      },
      {
        "number": "7",
        "name": "+VS",
        "type": "power_in",
        "description": "Positive supply voltage (pins 5 to 8 are all +VS); supply range +5 V to ±5 V, 12 V absolute maximum."
      },
      {
        "number": "8",
        "name": "+VS",
        "type": "power_in",
        "description": "Positive supply voltage (pins 5 to 8 are all +VS); supply range +5 V to ±5 V, 12 V absolute maximum."
      },
      {
        "number": "9",
        "name": "VOCM",
        "type": "input",
        "description": "Output common-mode voltage pin that sets the output common-mode level."
      },
      {
        "number": "10",
        "name": "+OUT",
        "type": "output",
        "description": "Positive output for load connection."
      },
      {
        "number": "11",
        "name": "−OUT",
        "type": "output",
        "description": "Negative output for load connection."
      },
      {
        "number": "12",
        "name": "PD",
        "type": "input",
        "description": "Power-down pin."
      },
      {
        "number": "13",
        "name": "−VS",
        "type": "power_in",
        "description": "Negative supply voltage (pins 13 to 16 are all −VS)."
      },
      {
        "number": "14",
        "name": "−VS",
        "type": "power_in",
        "description": "Negative supply voltage (pins 13 to 16 are all −VS)."
      },
      {
        "number": "15",
        "name": "−VS",
        "type": "power_in",
        "description": "Negative supply voltage (pins 13 to 16 are all −VS)."
      },
      {
        "number": "16",
        "name": "−VS",
        "type": "power_in",
        "description": "Negative supply voltage (pins 13 to 16 are all −VS)."
      },
      {
        "number": "17",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "provenance": {
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        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
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        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet does not state electrical direction for the feedback pins; they were typed passive as ; The exposed pad is printed as 'EP' with no number, and the datasheet says it is not electrically con"
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        "pages_sent": 9,
        "cost_usd": 0.121,
        "at": "2026-10-23T12:28:03"
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      "datasheet": {
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        "pages": 26,
        "sha256": "4aac21d38044c837",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 17,
        "described": 17,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "3eb81ffac423a66cdcfead8efe56401da171edaf1f2257049aad7b2d3900f6c8",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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      {
        "file": "ada4938-1acpz-r7-etched.step",
        "role": "eda",
        "up": "Z",
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        "origin": "footprint origin = pad-pattern centre",
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        "zmin_mm": 0,
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        "sha256": "e8f024cf9ef7c2cef25c6a4018876950bd056794816e81f79f914ee70ba716bd",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Analog Devices",
      "Package": "LFCSP-16(3x3)",
      "Category": "Amplifiers",
      "Pins": "17"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "4aac21d38044c837f9fe7fbb387e6b714d61d2f7004556582556bf3974d0fead",
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          "max": 4,
          "conditions": "VOS, dm = VOUT, dm/2; VDIN+ = VDIN− = 0 V",
          "source_page": 3,
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          "name": "Offset Voltage (single supply)",
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          "max": 4,
          "conditions": "VOS, dm = VOUT, dm/2; VDIN+ = VDIN− = VOCM = 2.5 V",
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        {
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          "unit": "mA",
          "min": null,
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          "max": 40,
          "conditions": "Per amplifier",
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          "name": "Quiescent Current (single supply)",
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          "typ": 34,
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        {
          "name": "Quiescent Current Powered down (single supply)",
          "symbol": "IQ",
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          "unit": "mA",
          "min": null,
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          "max": 1.7,
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          "source": "datasheet"
        },
        {
          "name": "VOCM Gain (dual supply)",
          "symbol": "",
          "kind": "electrical",
          "unit": "V/V",
          "min": 0.95,
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          "max": 1.05,
          "conditions": "ΔVOUT, cm/ΔVOCM; ΔVOCM = ±1 V",
          "source_page": 4,
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        },
        {
          "name": "VOCM Gain (single supply)",
          "symbol": "",
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          "typ": 1,
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          "conditions": "ΔVOUT, cm/ΔVOCM; ΔVOCM = ±1 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "PD Input Voltage Powered down",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 2.5,
          "conditions": "Powered down",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "PD Input Voltage Enabled",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 3,
          "typ": null,
          "max": null,
          "conditions": "Enabled",
          "source_page": 4,
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        },
        {
          "name": "Operating Temperature Range",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
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          "source": "datasheet"
        },
        {
          "name": "Supply Voltage",
          "symbol": "",
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          "unit": "V",
          "min": null,
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          "max": 12,
          "conditions": "",
          "source_page": 7,
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        },
        {
          "name": "Storage Temperature Range",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
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        {
          "name": "Lead Temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
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          "conditions": "Soldering, 10 sec",
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        {
          "name": "Junction Temperature",
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        {
          "name": "Thermal Resistance 16-Lead LFCSP",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 95,
          "max": null,
          "conditions": "Exposed pad soldered, 4-layer board",
          "source_page": 7,
          "source": "datasheet"
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        {
          "name": "-3 dB Small Signal Bandwidth (dual supply)",
          "symbol": "",
          "kind": "electrical",
          "unit": "MHz",
          "min": null,
          "typ": 1000,
          "max": null,
          "conditions": "VOUT = 0.1 V p-p",
          "source_page": 3,
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        },
        {
          "name": "Slew Rate (dual supply)",
          "symbol": "",
          "kind": "electrical",
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          "source_page": 3,
          "source": "datasheet"
        },
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          "name": "Input Voltage Noise",
          "symbol": "",
          "kind": "electrical",
          "unit": "nV/√Hz",
          "min": null,
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          "conditions": "f = 10 MHz",
          "source_page": 3,
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          "name": "CMRR (dual supply)",
          "symbol": "",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": -75,
          "max": null,
          "conditions": "ΔVOUT, dm/ΔVIN, cm; ΔVIN, cm = ±1 V, f = 1 MHz",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Rejection Ratio (dual supply)",
          "symbol": "",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
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          "max": null,
          "conditions": "ΔVOUT, dm/ΔVS; ΔVS = ±1 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Linear Output Current (dual supply)",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 75,
          "max": null,
          "conditions": "Per amplifier, RL, dm = 20 Ω, f = 10 MHz; printed as ±75",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_pitch": "ADA4938-1ACPZ-R7 (Analog Devices) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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