ADAR7251WBCSZ

{
  "slug": "adar7251wbcsz",
  "version": "0.1.0",
  "type": "component",
  "description": "Analog Devices Analog To Digital Converters (ADCs), LFCSP-48(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "adc-dac-data conversion",
    "adar7251wbcsz",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
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    "path": "docs/hero.png"
  },
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    "README.md",
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    "adar7251wbcsz.kicad_mod",
    "adar7251wbcsz.glb",
    "adar7251wbcsz.step",
    "adar7251wbcsz.lbr",
    "docs/hero.png",
    "docs/adar7251wbcsz-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
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    "adar7251wbcsz-hero.overlay.json",
    "adar7251wbcsz-etched.glb"
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  "component": {
    "mpn": "ADAR7251WBCSZ",
    "manufacturer": "Analog Devices",
    "package": "LFCSP-48(7x7)",
    "pin_count": 49,
    "category": "ADC/DAC/Data Conversion",
    "subcategory": "Analog To Digital Converters (ADCs)",
    "datasheet": "https://www.analog.com/media/en/technical-documentation/data-sheets/ADAR7251.pdf",
    "parts": {
      "symbol": "adar7251wbcsz.kicad_sym",
      "footprint": "adar7251wbcsz.kicad_mod",
      "model_3d": "adar7251wbcsz-hero.glb",
      "model_3d_plain": "adar7251wbcsz-etched.glb",
      "model_3d_step": "adar7251wbcsz-etched.step",
      "model_3d_step_plain": "adar7251wbcsz.step",
      "lbr": "adar7251wbcsz.lbr"
    },
    "distributor_links": {
      "lcsc": "C654357",
      "digikey": "505-ADAR7251WBCSZ-ND",
      "mouser": "584-ADAR7251WBCSZ"
    },
    "distributor_check": {
      "checked_at": "2026-10-31T12:37:54Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "505-ADAR7251WBCSZ-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "584-ADAR7251WBCSZ",
        "status": "found",
        "lifecycle": "Restricted Availability"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "AGND1",
        "type": "power_in",
        "description": "Analog ground, the reference point for all analog blocks; AGND1 and AGND2 are shorted internally."
      },
      {
        "number": "2",
        "name": "AIN3P",
        "type": "input",
        "description": "Noninverting input to differential analog channel 3."
      },
      {
        "number": "3",
        "name": "AIN3N",
        "type": "input",
        "description": "Inverting input to differential analog channel 3."
      },
      {
        "number": "4",
        "name": "AIN4P",
        "type": "input",
        "description": "Noninverting input to differential analog channel 4."
      },
      {
        "number": "5",
        "name": "AIN4N",
        "type": "input",
        "description": "Inverting input to differential analog channel 4."
      },
      {
        "number": "6",
        "name": "AUXIN1",
        "type": "input",
        "description": "Auxiliary ADC single-ended analog input 1."
      },
      {
        "number": "7",
        "name": "AUXIN2",
        "type": "input",
        "description": "Auxiliary ADC single-ended analog input 2."
      },
      {
        "number": "8",
        "name": "CM",
        "type": "bidirectional",
        "description": "ADC reference output; connect a 10 µF capacitor in parallel with a 100 nF capacitor from this pin to AGNDx."
      },
      {
        "number": "9",
        "name": "AGND2",
        "type": "power_in",
        "description": "Analog ground, the reference point for all analog blocks; shorted internally to AGND1."
      },
      {
        "number": "10",
        "name": "BIASN",
        "type": "output",
        "description": "Internal bias generator; decouple to AGNDx using a 0.47 µF capacitor."
      },
      {
        "number": "11",
        "name": "BIASP",
        "type": "output",
        "description": "Internal bias generator; decouple to AVDDx using a 0.47 µF capacitor."
      },
      {
        "number": "12",
        "name": "AVDD1",
        "type": "power_in",
        "description": "Analog supply voltage, 3.3 V; decouple to AGNDx."
      },
      {
        "number": "13",
        "name": "PLLGND",
        "type": "power_in",
        "description": "Analog ground for the PLL; connect to a ground plane directly on the board."
      },
      {
        "number": "14",
        "name": "PLLFILT",
        "type": "passive",
        "description": "Filter components connection for the PLL (see Figure 60)."
      },
      {
        "number": "15",
        "name": "PLLVDD",
        "type": "power_in",
        "description": "Analog supply for the analog PLL, 3.3 V; decouple to PLLGND (Pin 13) with a 0.1 µF MLCC and connect to AVDDx or an external 3.3 V source."
      },
      {
        "number": "16",
        "name": "XIN/MCLKIN",
        "type": "input",
        "description": "Internal oscillator input or clock input accepting 16 MHz to 54 MHz; connect a crystal between XIN and XOUT, or drive a single-ended clock at MCLKIN."
      },
      {
        "number": "17",
        "name": "XOUT",
        "type": "output",
        "description": "Internal oscillator output connection for the external crystal."
      },
      {
        "number": "18",
        "name": "AVDD2",
        "type": "power_in",
        "description": "Analog supply voltage, 3.3 V; decouple to AGNDx."
      },
      {
        "number": "19",
        "name": "REGOUT_DIGITAL",
        "type": "power_out",
        "description": "LDO regulator output for the internal digital core (1.8 V typical); decouple to DGNDx and connect to the DVDDx pins when using the internal regulator."
      },
      {
        "number": "20",
        "name": "DGND1",
        "type": "power_in",
        "description": "Digital ground, the reference point for the digital circuitry; DGND1, DGND2 and DGND3 are shorted internally."
      },
      {
        "number": "21",
        "name": "DVDD1",
        "type": "power_in",
        "description": "Digital core power supply input, 1.8 V; connect to REGOUT_DIGITAL (Pin 19) or an external 1.8 V source and decouple to DGNDx."
      },
      {
        "number": "22",
        "name": "DATA_READY",
        "type": "output",
        "description": "ADC conversion data ready output; connect to the DSP general-purpose input/output."
      },
      {
        "number": "23",
        "name": "DGND2",
        "type": "power_in",
        "description": "Digital ground, the reference point for the digital circuitry; shorted internally to the other DGNDx pins."
      },
      {
        "number": "24",
        "name": "DVDD2",
        "type": "power_in",
        "description": "Digital core power supply input, 1.8 V; connect to REGOUT_DIGITAL (Pin 19) or an external 1.8 V source and decouple to DGNDx."
      },
      {
        "number": "25",
        "name": "IOVDD1",
        "type": "power_in",
        "description": "Logic power supply input that sets the interface operating voltage; decouple to DGNDx."
      },
      {
        "number": "26",
        "name": "ADC_DOUT0",
        "type": "output",
        "description": "ADC data output in serial mode, or ADC data output Bit 0 and Bit 8 in PPI mode."
      },
      {
        "number": "27",
        "name": "ADC_DOUT1",
        "type": "output",
        "description": "ADC data output in serial mode, or ADC data output Bit 1/9 in PPI mode."
      },
      {
        "number": "28",
        "name": "ADC_DOUT2/GPIO1",
        "type": "output",
        "description": "ADC data output Bit 2 and Bit 10 (PPI mode) or general-purpose input/output 1."
      },
      {
        "number": "29",
        "name": "ADC_DOUT3/GPIO2",
        "type": "output",
        "description": "ADC data output Bit 3 and Bit 11 (PPI mode) or general-purpose input/output 2."
      },
      {
        "number": "30",
        "name": "ADC_DOUT4",
        "type": "bidirectional",
        "description": "ADC data output Bit 4 and Bit 12 in PPI mode."
      },
      {
        "number": "31",
        "name": "ADC_DOUT5",
        "type": "bidirectional",
        "description": "ADC data output Bit 5 and Bit 13 in PPI mode."
      },
      {
        "number": "32",
        "name": "ADDR15/ADC_DOUT6",
        "type": "bidirectional",
        "description": "Sets Bit 1 of the SPI device address (tie to DGNDx or IOVDDx via a 10 kΩ pull-down or pull-up) or serves as ADC data output Bit 6 and Bit 14 in PPI mode."
      },
      {
        "number": "33",
        "name": "FS_ADC/ADC_DOUT7",
        "type": "bidirectional",
        "description": "Active low frame synchronization signal for default ADC data in serial mode, or ADC data output Bit 7 and Bit 15 in PPI mode."
      },
      {
        "number": "34",
        "name": "SCLK_ADC",
        "type": "bidirectional",
        "description": "Serial bit clock for the ADC data output in serial and PPI mode; input in slave mode, output in master mode."
      },
      {
        "number": "35",
        "name": "CONV_START",
        "type": "input",
        "description": "Active low ADC conversion start input in DAQ/PPI/serial mode; an active low signal initiates a conversion."
      },
      {
        "number": "36",
        "name": "DGND3",
        "type": "power_in",
        "description": "Digital ground, the reference point for the digital circuitry; shorted internally to the other DGNDx pins."
      },
      {
        "number": "37",
        "name": "IOVDD2",
        "type": "power_in",
        "description": "Logic power supply input that sets the interface operating voltage; decouple to DGNDx."
      },
      {
        "number": "38",
        "name": "SPI_MISO",
        "type": "tri_state",
        "description": "SPI control interface slave data output, tristated until a read operation is requested."
      },
      {
        "number": "39",
        "name": "SPI_MOSI",
        "type": "input",
        "description": "SPI control interface slave data input."
      },
      {
        "number": "40",
        "name": "SPI_CLK",
        "type": "input",
        "description": "SPI control interface serial clock input."
      },
      {
        "number": "41",
        "name": "SPI_SS",
        "type": "input",
        "description": "SPI control interface slave select, active low; connect an external 10 kΩ pull-up resistor to IOVDDx."
      },
      {
        "number": "42",
        "name": "FAULT",
        "type": "output",
        "description": "Digital output active under fault condition; connect an external 10 kΩ pull-up resistor to IOVDDx and usable as an interrupt to the microcontroller or DSP."
      },
      {
        "number": "43",
        "name": "RESET/PWDN",
        "type": "input",
        "description": "Active low reset input that places the device in power-down when held low; must be held low until AVDDx is within its specified operating range."
      },
      {
        "number": "44",
        "name": "AIN1P",
        "type": "input",
        "description": "Noninverting input to differential analog channel 1."
      },
      {
        "number": "45",
        "name": "AIN1N",
        "type": "input",
        "description": "Inverting input to differential analog channel 1."
      },
      {
        "number": "46",
        "name": "AIN2P",
        "type": "input",
        "description": "Noninverting input to differential analog channel 2."
      },
      {
        "number": "47",
        "name": "AIN2N",
        "type": "input",
        "description": "Inverting input to differential analog channel 2."
      },
      {
        "number": "48",
        "name": "AVDD3",
        "type": "power_in",
        "description": "Analog supply voltage; decouple to AGNDx."
      },
      {
        "number": "49",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The Figure 7 pin-configuration drawing disagrees with Table 9 for pins 1-12 and 25-36. For example, ; The text does not say how the exposed pad is named or numbered, so I listed it as 'EPAD'. It is sold; Pin types are inferred from Table 9's type codes. These pins are the judgment calls: ADC_DOUT2/GPIO1",
          "1/49 pins cited to the wrong page (name found elsewhere): ['17:XOUT@p12']"
        ],
        "pages_sent": 15,
        "cost_usd": 0.234,
        "at": "2026-10-31T12:37:37"
      },
      "datasheet": {
        "url": "https://www.analog.com/media/en/technical-documentation/data-sheets/ADAR7251.pdf",
        "pages": 72,
        "sha256": "0446061b3236843e",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 49,
        "described": 49,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "adar7251wbcsz.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.0,
          7.0,
          0.77
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "f2b38b0b4bf967c77e683e8d4599608b9f0503055ec535b93c4ebb5d0163e916",
        "checked": "2026-10-31",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "adar7251wbcsz-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.0,
          7.0,
          0.77
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "c12009b86c1a01b682b11e76e55467936077d9733385a235a6ba08780ac06d2f",
        "checked": "2026-10-31",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "CS-48-1",
      "source_page": 72,
      "D": {
        "nom_mm": 7.0,
        "range_mm": [
          6.9,
          7.1
        ]
      },
      "E1": {
        "nom_mm": 7.0,
        "range_mm": [
          6.9,
          7.1
        ]
      },
      "e": {
        "nom_mm": 0.5,
        "range_mm": [
          null,
          null
        ]
      },
      "A": {
        "nom_mm": 0.75,
        "range_mm": [
          0.7,
          0.8
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "adar7251wbcsz.step",
        "verdict": "PASS",
        "reasons": [
          "height within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}