AD8331ARQZ-R7

{
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  "type": "component",
  "slug": "ad8331arqz-r7",
  "title": "AD8331ARQZ-R7",
  "brief": "Analog Devices Low Noise Amplifiers (LNA) - RF, QSOP-20-150mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
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  "component": {
    "mpn": "AD8331ARQZ-R7",
    "manufacturer": "Analog Devices",
    "package": "QSOP-20-150mil",
    "pin_count": 20,
    "category": "RF And Wireless",
    "subcategory": "Low Noise Amplifiers (LNA) - RF",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588918182099107840",
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      "lbr": "ad8331arqz-r7.lbr"
    },
    "distributor_links": {
      "lcsc": "C578697"
    },
    "pins": [
      {
        "number": "1",
        "name": "LMD",
        "type": "passive",
        "description": "LNA bias bypass pin; connect 18-22 nF capacitor to ground for mid-supply high-frequency bypassing"
      },
      {
        "number": "2",
        "name": "INH",
        "type": "input",
        "description": "LNA single-ended input, AC-coupled; accepts ±275 mV input signal range"
      },
      {
        "number": "3",
        "name": "VPSL",
        "type": "power_in",
        "description": "LNA 5 V power supply; bypass with 0.1 µF capacitor to COML"
      },
      {
        "number": "4",
        "name": "LON",
        "type": "output",
        "description": "LNA inverting output, 19 dB differential gain, 5 Ω impedance; drive RIZ feedback resistor for input impedance matching"
      },
      {
        "number": "5",
        "name": "LOP",
        "type": "output",
        "description": "LNA non-inverting output, 19 dB differential gain, 5 Ω impedance; AC-couple through 0.1 µF capacitor to VIP"
      },
      {
        "number": "6",
        "name": "COML",
        "type": "power_in",
        "description": "LNA ground; connect to PCB ground plane and LMD bypass capacitor"
      },
      {
        "number": "7",
        "name": "VIP",
        "type": "input",
        "description": "VGA non-inverting input, 100 Ω differential impedance; AC-coupled from LOP through 0.1 µF capacitor"
      },
      {
        "number": "8",
        "name": "VIN",
        "type": "power_in",
        "description": "VGA inverting input, 100 Ω differential impedance; AC-coupled from LON through 0.1 µF capacitor"
      },
      {
        "number": "9",
        "name": "MODE",
        "type": "input",
        "description": "Gain slope select logic input; low selects ascending mode (50 dB/V), high selects descending mode (−50 dB/V) where available"
      },
      {
        "number": "10",
        "name": "GAIN",
        "type": "input",
        "description": "Gain control voltage input, 40 mV to 1.0 V range; 50 dB/V scale provides ±48 dB total gain adjustment; 10 MΩ input impedance"
      },
      {
        "number": "11",
        "name": "VCM",
        "type": "input",
        "description": "VGA common-mode voltage reference; default 2.5 V, externally adjustable 1.5 V to 3.5 V; bypass with 0.1 µF and 1 nF capacitors in parallel"
      },
      {
        "number": "12",
        "name": "RCLMP",
        "type": "passive",
        "description": "Output clamp level resistor connection; connect resistor to ground to program output voltage clamp threshold, 0.5 V to 4.4 V p-p range"
      },
      {
        "number": "13",
        "name": "HILO",
        "type": "input",
        "description": "Gain range select logic input; low selects LO mode (−4.5 to 43.5 dB), high selects HI mode (7.5 to 55.5 dB)"
      },
      {
        "number": "14",
        "name": "VPOS",
        "type": "power_in",
        "description": "VGA 5 V power supply; bypass with 0.1 µF capacitor to COMM; separate supply rail from LNA VPSL"
      },
      {
        "number": "15",
        "name": "VOH",
        "type": "output",
        "description": "VGA non-inverting differential output, 1 Ω impedance; 2.5 V common mode ±1.125 V swing capability"
      },
      {
        "number": "16",
        "name": "VOL",
        "type": "output",
        "description": "VGA inverting differential output, 1 Ω impedance; 2.5 V common mode ±1.125 V swing capability"
      },
      {
        "number": "17",
        "name": "COMM",
        "type": "power_in",
        "description": "VGA ground; connect to PCB ground plane for output and supply return current"
      },
      {
        "number": "18",
        "name": "ENBV",
        "type": "input",
        "description": "VGA enable logic input; high enables VGA, low disables for reduced quiescent current; 40 kΩ input impedance"
      },
      {
        "number": "19",
        "name": "ENBL",
        "type": "input",
        "description": "LNA enable logic input; high enables LNA, low disables for reduced quiescent current; 25 kΩ input impedance"
      },
      {
        "number": "20",
        "name": "COMM",
        "type": "power_in",
        "description": "VGA ground; secondary ground connection for output return path current distribution"
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.2",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.2",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-4-6",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 56,
        "cost_usd": 0.6129,
        "at": "2026-09-22T14:01:15"
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      "datasheet": {
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        "pages": 56,
        "sha256": "59fd153ca71b5bca",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 20,
        "described": 20,
        "cites_pages": true,
        "refuses_to_fabricate": true
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        "sha256": "055dd9fdf66545aae18e6245832805cf8b1ec5a2eb70eadf276a65da5230a09e",
        "checked": "2026-10-07",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Analog Devices",
      "Package": "QSOP-20-150mil",
      "Category": "RF And Wireless",
      "Pins": "20"
    }
  },
  "variants": [],
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  "discovery_pitch": "AD8331ARQZ-R7 (Analog Devices) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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  "updated_at": "2026-09-24T15:42:14.280Z"
}