ADF4351BCPZ

{
  "slug": "adf4351bcpz",
  "version": "0.1.0",
  "type": "component",
  "description": "Analog Devices Clock Generators, PLLs, Frequency Synthesizers, LFCSP-32(5x5). Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "clock-timing",
    "adf4351bcpz",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "adf4351bcpz.kicad_sym",
    "adf4351bcpz.kicad_mod",
    "adf4351bcpz.glb",
    "adf4351bcpz.step",
    "adf4351bcpz.lbr",
    "docs/hero.png",
    "docs/adf4351bcpz-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "component": {
    "mpn": "ADF4351BCPZ",
    "manufacturer": "Analog Devices",
    "package": "LFCSP-32(5x5)",
    "pin_count": 33,
    "category": "Clock/Timing",
    "subcategory": "Clock Generators, PLLs, Frequency Synthesizers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588915074786603008",
    "parts": {
      "symbol": "adf4351bcpz.kicad_sym",
      "footprint": "adf4351bcpz.kicad_mod",
      "model_3d": "adf4351bcpz-etched.glb",
      "model_3d_plain": "adf4351bcpz.glb",
      "model_3d_step": "adf4351bcpz-etched.step",
      "model_3d_step_plain": "adf4351bcpz.step",
      "lbr": "adf4351bcpz.lbr"
    },
    "distributor_links": {
      "lcsc": "C654681"
    },
    "pins": [
      {
        "number": "1",
        "name": "CLK",
        "type": "input",
        "description": "Serial clock input; 32-bit data is input bit-by-bit to shift register on CLK rising edge; high impedance CMOS input."
      },
      {
        "number": "2",
        "name": "DATA",
        "type": "input",
        "description": "Serial data input; data loaded MSB first with three LSBs serving as control bits C3, C2, C1; high impedance CMOS input."
      },
      {
        "number": "3",
        "name": "LE",
        "type": "input",
        "description": "Load enable input; when LE transitions high, data from 32-bit shift register loads into register selected by control bits; high impedance CMOS input."
      },
      {
        "number": "4",
        "name": "CE",
        "type": "input",
        "description": "Chip enable input; logic low powers down device and puts charge pump into tri-state; logic high powers up device based on shutdown bit state."
      },
      {
        "number": "5",
        "name": "SW",
        "type": "output",
        "description": "Fast lock switch output; external loop filter connected to this pin when using fast lock mode; SW pin can be shorted to AGND during fast lock."
      },
      {
        "number": "6",
        "name": "VP",
        "type": "power_in",
        "description": "Charge pump supply voltage; must equal AVDD (3.0 V to 3.6 V); place decoupling capacitor close to this pin."
      },
      {
        "number": "7",
        "name": "CPOUT",
        "type": "output",
        "description": "Charge pump output; provides ±ICP (0.312 mA to 5.0 mA programmable) to external loop filter when enabled; loop filter output connects to VTUNE."
      },
      {
        "number": "8",
        "name": "CPGND",
        "type": "power_in",
        "description": "Charge pump ground return; ground reference for CPOUT output."
      },
      {
        "number": "9",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground; ground reference return for AVDD analog supply voltage."
      },
      {
        "number": "10",
        "name": "AVDD",
        "type": "power_in",
        "description": "Analog supply voltage; 3.0 V to 3.6 V; must equal DVDD; place decoupling capacitor close to this pin."
      },
      {
        "number": "11",
        "name": "AGNDVCO",
        "type": "power_in",
        "description": "VCO analog ground; ground return for VCO core circuit."
      },
      {
        "number": "12",
        "name": "RFOUTA+",
        "type": "output",
        "description": "VCO fundamental (2.2 GHz to 4.4 GHz) or divided output (34.375 MHz min); programmable power −4 dBm to +5 dBm in 3 dB steps."
      },
      {
        "number": "13",
        "name": "RFOUTA-",
        "type": "output",
        "description": "Complementary VCO output; provides VCO fundamental or divided output; programmable power −4 dBm to +5 dBm."
      },
      {
        "number": "14",
        "name": "RFOUTB+",
        "type": "output",
        "description": "Auxiliary VCO output; provides VCO fundamental or divided output; programmable power −4 dBm to +5 dBm; disabled when not needed."
      },
      {
        "number": "15",
        "name": "RFOUTB-",
        "type": "output",
        "description": "Complementary auxiliary VCO output; provides VCO fundamental or divided output; programmable power −4 dBm to +5 dBm."
      },
      {
        "number": "16",
        "name": "VVCO",
        "type": "power_in",
        "description": "VCO supply voltage; 3.0 V to 3.6 V; must equal AVDD; place decoupling capacitor close to this pin."
      },
      {
        "number": "17",
        "name": "VVCO",
        "type": "power_in",
        "description": "VCO supply voltage; 3.0 V to 3.6 V; must equal AVDD; place decoupling capacitor close to this pin."
      },
      {
        "number": "18",
        "name": "AGNDVCO",
        "type": "power_in",
        "description": "VCO analog ground; ground return for VCO core circuit."
      },
      {
        "number": "19",
        "name": "TEMP",
        "type": "output",
        "description": "Temperature compensation output; provides temperature-compensated bias for optimizing VCO performance; place decoupling capacitor close to pin."
      },
      {
        "number": "20",
        "name": "VTUNE",
        "type": "input",
        "description": "VCO tuning control input; voltage derived from filtered CPOUT determines VCO output frequency; control range 0.5 V to 2.5 V."
      },
      {
        "number": "21",
        "name": "AGNDVCO",
        "type": "power_in",
        "description": "VCO analog ground; ground return for VCO core circuit."
      },
      {
        "number": "22",
        "name": "RSET",
        "type": "output",
        "description": "Charge pump current setting pin; connect resistor between RSET and ground to program ICP; nominal bias voltage 0.55 V; ICP = 25.5/RSET(kΩ); RSET range 3.9 kΩ to 10 kΩ."
      },
      {
        "number": "23",
        "name": "VCOM",
        "type": "output",
        "description": "Internal compensation node; biases half the tuning range of VCO; place decoupling capacitor close to this pin."
      },
      {
        "number": "24",
        "name": "VREF",
        "type": "power_in",
        "description": "Reference voltage output; provides bias references for analog circuits; place decoupling capacitor close to this pin."
      },
      {
        "number": "25",
        "name": "LD",
        "type": "output",
        "description": "Lock detect output; outputs logic high when PLL locked; outputs logic low when PLL unlocked; pin mode configurable via register 5."
      },
      {
        "number": "26",
        "name": "PDBRF",
        "type": "input",
        "description": "RF power down control input; logic low mutes RF outputs RFOUTA and RFOUTB; logic high enables RF output; also software programmable."
      },
      {
        "number": "27",
        "name": "DGND",
        "type": "power_in",
        "description": "Digital ground; ground return for DVDD digital supply voltage."
      },
      {
        "number": "28",
        "name": "DVDD",
        "type": "power_in",
        "description": "Digital supply voltage; 3.0 V to 3.6 V; must equal AVDD; place decoupling capacitor close to this pin."
      },
      {
        "number": "29",
        "name": "REFIN",
        "type": "input",
        "description": "Reference clock input; 10 MHz to 250 MHz; CMOS input with nominal threshold at AVDD/2; 100 kΩ input resistance; TTL/CMOS oscillator or AC-coupled."
      },
      {
        "number": "30",
        "name": "MUXOUT",
        "type": "tri_state",
        "description": "Multiplexer output; provides access to lock detect, N divider output, R divider output, or supply voltages; configurable via M3:M1 bits in register 2."
      },
      {
        "number": "31",
        "name": "SDGND",
        "type": "power_in",
        "description": "Digital sigma-delta modulator ground; ground return for Σ-Δ modulator circuits."
      },
      {
        "number": "32",
        "name": "SDVDD",
        "type": "power_in",
        "description": "Digital sigma-delta modulator supply; 3.0 V to 3.6 V; must equal AVDD; place decoupling capacitor close to this pin."
      },
      {
        "number": "33",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "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": [
          "extractor flagged: SW pin classification: Described as 'Fast Lock Switch' with external loop filter connection; classif; RSET pin classification: Provides 0.55 V bias voltage for external resistor setting charge pump curr; VCO Analog Ground (AGNDVCO) appears at pins 11, 18, and 21; all classified as power_in as ground con",
          "exposed pad 33 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
        ],
        "pages_sent": 28,
        "cost_usd": 0.662,
        "at": "2026-09-21T20:45:47"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588915074786603008",
        "pages": 28,
        "sha256": "bf842820730b1137",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 33,
        "described": 33,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
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    "models_3d": [
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5.0,
          5.0,
          0.875
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "5fa713ea46b36980895812ed853577889b7cb06d275041a39b99bc0be305dc79",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "adf4351bcpz-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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        "sha256": "4343a42763f78d7982be5f206f6e8fe390f686132b7eb3c240f35f5e2c3e4b6c",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}