AD7656BSTZ-1

{
  "slug": "ad7656bstz-1",
  "version": "0.1.0",
  "type": "component",
  "description": "Analog Devices Analog To Digital Converters (ADC), LQFP-64(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "data acquisition",
    "ad7656bstz-1",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ad7656bstz-1.kicad_sym",
    "ad7656bstz-1.kicad_mod",
    "ad7656bstz-1.glb",
    "ad7656bstz-1.step",
    "ad7656bstz-1.lbr",
    "docs/hero.png",
    "docs/ad7656bstz-1-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ad7656bstz-1-hero.glb",
    "ad7656bstz-1-hero.overlay.json",
    "ad7656bstz-1-etched.glb"
  ],
  "component": {
    "mpn": "AD7656BSTZ-1",
    "manufacturer": "Analog Devices",
    "package": "LQFP-64(10x10)",
    "pin_count": 64,
    "category": "Data Acquisition",
    "subcategory": "Analog To Digital Converters (ADC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588885146837110784",
    "parts": {
      "symbol": "ad7656bstz-1.kicad_sym",
      "footprint": "ad7656bstz-1.kicad_mod",
      "model_3d": "ad7656bstz-1-hero.glb",
      "model_3d_plain": "ad7656bstz-1-etched.glb",
      "model_3d_step": "ad7656bstz-1-etched.step",
      "model_3d_step_plain": "ad7656bstz-1.step",
      "lbr": "ad7656bstz-1.lbr"
    },
    "distributor_links": {
      "lcsc": "C495030",
      "digikey": "505-AD7656BSTZ-1-ND",
      "mouser": "584-AD7656BSTZ-1"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T09:36:22Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "505-AD7656BSTZ-1-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "584-AD7656BSTZ-1",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "DB14/REFBUFEN/DIS",
        "type": "bidirectional",
        "description": "Parallel data bit 14 or reference buffer enable/disable function; detailed text not in the supplied pages."
      },
      {
        "number": "2",
        "name": "DB13",
        "type": "bidirectional",
        "description": "Parallel data output bit 13; tied to DGND in serial interface mode."
      },
      {
        "number": "3",
        "name": "DB12",
        "type": "bidirectional",
        "description": "Parallel data output bit 12; tied to DGND in serial interface mode."
      },
      {
        "number": "4",
        "name": "DB11",
        "type": "bidirectional",
        "description": "Parallel data output bit 11; tied to DGND in serial interface mode."
      },
      {
        "number": "5",
        "name": "DB10/DOUT C",
        "type": "bidirectional",
        "description": "Parallel data bit 10 when SER/PAR SEL = 0, or serial data output DOUT C when SER/PAR SEL = 1."
      },
      {
        "number": "6",
        "name": "DB9/DOUT B",
        "type": "bidirectional",
        "description": "Parallel data bit 9 when SER/PAR SEL = 0, or serial data output DOUT B when SER/PAR SEL = 1."
      },
      {
        "number": "7",
        "name": "DB8/DOUT A",
        "type": "bidirectional",
        "description": "Parallel data bit 8 when SER/PAR SEL = 0, or serial data output DOUT A when SER/PAR SEL = 1."
      },
      {
        "number": "8",
        "name": "DGND",
        "type": "power_in",
        "description": "Digital ground for digital circuitry; connect to the system DGND plane, within 0.3 V of AGND."
      },
      {
        "number": "9",
        "name": "VDRIVE",
        "type": "power_in",
        "description": "Logic power supply for the interface, 4.75 V to 5.25 V range per supply description; sets the interface logic output voltage (abs max DGND-0.3 V to DVCC+0.3 V)."
      },
      {
        "number": "10",
        "name": "DB7/HBEN/DCEN",
        "type": "bidirectional",
        "description": "Parallel data bit 7, or HBEN in byte mode (W/B = 1), or DCEN daisy-chain enable in serial mode."
      },
      {
        "number": "11",
        "name": "DB6/SCLK",
        "type": "bidirectional",
        "description": "Parallel data bit 6 when SER/PAR SEL = 0, or serial clock input when SER/PAR SEL = 1."
      },
      {
        "number": "12",
        "name": "DB5/DCIN A",
        "type": "bidirectional",
        "description": "Parallel data bit 5, or daisy-chain input A in serial mode when DCEN = 1."
      },
      {
        "number": "13",
        "name": "DB4/DCIN B",
        "type": "bidirectional",
        "description": "Parallel data bit 4, or daisy-chain input B in serial mode when DCEN = 1."
      },
      {
        "number": "14",
        "name": "DB3/DCIN C",
        "type": "bidirectional",
        "description": "Parallel data bit 3, or daisy-chain input C in serial mode when DCEN = 1."
      },
      {
        "number": "15",
        "name": "DB2/SEL C",
        "type": "bidirectional",
        "description": "Parallel data bit 2, or SEL C in serial mode selecting use of DOUT C as a serial output."
      },
      {
        "number": "16",
        "name": "DB1/SEL B",
        "type": "bidirectional",
        "description": "Parallel data bit 1, or SEL B in serial mode selecting use of DOUT B as a serial output."
      },
      {
        "number": "17",
        "name": "DB0/SEL A",
        "type": "bidirectional",
        "description": "Parallel data bit 0, or SEL A in serial mode selecting use of DOUT A as a serial output."
      },
      {
        "number": "18",
        "name": "BUSY",
        "type": "output",
        "description": "Busy output that goes high when conversion starts and returns low when conversion data is latched into the output register."
      },
      {
        "number": "19",
        "name": "CS",
        "type": "input",
        "description": "Chip select input, active low; with RD it enables reading the conversion result and with WR it enables writes."
      },
      {
        "number": "20",
        "name": "RD",
        "type": "input",
        "description": "Read input, active low; used with CS to read conversion results."
      },
      {
        "number": "21",
        "name": "CONVST C",
        "type": "input",
        "description": "Conversion start input C that starts simultaneous conversion of V5 and V6."
      },
      {
        "number": "22",
        "name": "CONVST B",
        "type": "input",
        "description": "Conversion start input B that starts simultaneous conversion of V3 and V4."
      },
      {
        "number": "23",
        "name": "CONVST A",
        "type": "input",
        "description": "Conversion start input A that starts simultaneous conversion of V1 and V2."
      },
      {
        "number": "24",
        "name": "STBY",
        "type": "input",
        "description": "Standby mode input; function text not in the supplied pages."
      },
      {
        "number": "25",
        "name": "DGND",
        "type": "power_in",
        "description": "Digital ground for digital circuitry; connect to the system DGND plane, within 0.3 V of AGND."
      },
      {
        "number": "26",
        "name": "DVCC",
        "type": "power_in",
        "description": "Digital supply voltage 4.75 V to 5.25 V; decouple to DGND with a 1 uF capacitor and keep within 0.3 V of AVCC."
      },
      {
        "number": "27",
        "name": "RANGE",
        "type": "input",
        "description": "Analog input range select in hardware mode, setting the range of V1 to V6 (+/-4xVREF or +/-2xVREF); detail text not in supplied pages."
      },
      {
        "number": "28",
        "name": "RESET",
        "type": "input",
        "description": "Reset input; function text not in the supplied pages."
      },
      {
        "number": "29",
        "name": "W/B",
        "type": "input",
        "description": "Word/byte select for the parallel interface (W/B = 0 word mode, W/B = 1 byte mode with HBEN)."
      },
      {
        "number": "30",
        "name": "VSS",
        "type": "power_in",
        "description": "Negative power supply for the high voltage analog input structure; abs max +0.3 V to -16.5 V relative to AGND/DGND."
      },
      {
        "number": "31",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive power supply for the high voltage analog input structure; abs max -0.3 V to +16.5 V relative to AGND/DGND."
      },
      {
        "number": "32",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground reference for on-chip circuitry; connect to the system AGND plane, within 0.3 V of DGND."
      },
      {
        "number": "33",
        "name": "V1",
        "type": "input",
        "description": "Analog input 1, single-ended; range set by RANGE pin (hardware mode) or control register (software mode)."
      },
      {
        "number": "34",
        "name": "AVCC",
        "type": "power_in",
        "description": "Analog supply voltage 4.75 V to 5.25 V; decouple to AGND and keep within 0.3 V of DVCC."
      },
      {
        "number": "35",
        "name": "AVCC",
        "type": "power_in",
        "description": "Analog supply voltage 4.75 V to 5.25 V; decouple to AGND and keep within 0.3 V of DVCC."
      },
      {
        "number": "36",
        "name": "V2",
        "type": "input",
        "description": "Analog input 2, single-ended; range set by RANGE pin (hardware mode) or control register (software mode)."
      },
      {
        "number": "37",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground reference for on-chip circuitry; connect to the system AGND plane, within 0.3 V of DGND."
      },
      {
        "number": "38",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground reference for on-chip circuitry; connect to the system AGND plane, within 0.3 V of DGND."
      },
      {
        "number": "39",
        "name": "V3",
        "type": "input",
        "description": "Analog input 3, single-ended; range set by RANGE pin (hardware mode) or control register (software mode)."
      },
      {
        "number": "40",
        "name": "AVCC",
        "type": "power_in",
        "description": "Analog supply voltage 4.75 V to 5.25 V; decouple to AGND and keep within 0.3 V of DVCC."
      },
      {
        "number": "41",
        "name": "AVCC",
        "type": "power_in",
        "description": "Analog supply voltage 4.75 V to 5.25 V; decouple to AGND and keep within 0.3 V of DVCC."
      },
      {
        "number": "42",
        "name": "V4",
        "type": "input",
        "description": "Analog input 4, single-ended; range set by RANGE pin (hardware mode) or control register (software mode)."
      },
      {
        "number": "43",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground reference for on-chip circuitry; connect to the system AGND plane, within 0.3 V of DGND."
      },
      {
        "number": "44",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground reference for on-chip circuitry; connect to the system AGND plane, within 0.3 V of DGND."
      },
      {
        "number": "45",
        "name": "V5",
        "type": "input",
        "description": "Analog input 5, single-ended; range set by RANGE pin (hardware mode) or control register (software mode)."
      },
      {
        "number": "46",
        "name": "AVCC",
        "type": "power_in",
        "description": "Analog supply voltage 4.75 V to 5.25 V; decouple to AGND and keep within 0.3 V of DVCC."
      },
      {
        "number": "47",
        "name": "AVCC",
        "type": "power_in",
        "description": "Analog supply voltage 4.75 V to 5.25 V; decouple to AGND and keep within 0.3 V of DVCC."
      },
      {
        "number": "48",
        "name": "V6",
        "type": "input",
        "description": "Analog input 6, single-ended; range set by RANGE pin (hardware mode) or control register (software mode)."
      },
      {
        "number": "49",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground reference for on-chip circuitry; connect to the system AGND plane, within 0.3 V of DGND."
      },
      {
        "number": "50",
        "name": "AVCC",
        "type": "power_in",
        "description": "Analog supply voltage 4.75 V to 5.25 V; decouple to AGND and keep within 0.3 V of DVCC."
      },
      {
        "number": "51",
        "name": "REFIN/REFOUT",
        "type": "bidirectional",
        "description": "Reference input or 2.5 V internal reference output; decouple to AGND with a 1 uF capacitor (abs max -0.3 V to AVCC+0.3 V)."
      },
      {
        "number": "52",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground reference for on-chip circuitry; connect to the system AGND plane, within 0.3 V of DGND."
      },
      {
        "number": "53",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground reference for on-chip circuitry; connect to the system AGND plane, within 0.3 V of DGND."
      },
      {
        "number": "54",
        "name": "REFCAPA",
        "type": "passive",
        "description": "Reference decoupling capacitor A pin; connect a 1 uF capacitor to AGND, used for the ADC pair converted by CONVST A."
      },
      {
        "number": "55",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground reference for on-chip circuitry; connect to the system AGND plane, within 0.3 V of DGND."
      },
      {
        "number": "56",
        "name": "REFCAPB",
        "type": "passive",
        "description": "Reference decoupling capacitor B pin; connect a 1 uF capacitor to AGND."
      },
      {
        "number": "57",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground reference for on-chip circuitry; connect to the system AGND plane, within 0.3 V of DGND."
      },
      {
        "number": "58",
        "name": "REFCAPC",
        "type": "passive",
        "description": "Reference decoupling capacitor C pin; connect a 1 uF capacitor to AGND."
      },
      {
        "number": "59",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground reference for on-chip circuitry; connect to the system AGND plane, within 0.3 V of DGND."
      },
      {
        "number": "60",
        "name": "AVCC",
        "type": "power_in",
        "description": "Analog supply voltage 4.75 V to 5.25 V; decouple to AGND and keep within 0.3 V of DVCC."
      },
      {
        "number": "61",
        "name": "SER/PAR SEL",
        "type": "input",
        "description": "Interface select: logic low selects parallel interface, logic high selects serial interface."
      },
      {
        "number": "62",
        "name": "H/S SEL",
        "type": "input",
        "description": "Hardware/software select: logic high uses DB[15:8] with CS and WR to write the control register; logic low selects hardware mode."
      },
      {
        "number": "63",
        "name": "WR/REFEN/DIS",
        "type": "input",
        "description": "Write input in software mode, or internal reference enable/disable when H/S SEL = 0 (REFEN/DIS = 0 uses external reference, 1 enables internal reference)."
      },
      {
        "number": "64",
        "name": "DB15",
        "type": "bidirectional",
        "description": "Parallel data output bit 15 (MSB); tied to DGND in serial interface mode."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: MPN AD7656BSTZ-1 is not listed exactly in the ordering table on page 30. The closest entries are AD7; Pin 30 has no explicit label in the extracted text. The top-view text lists 'W/B 30', 'VSS 31', 'VDD; Page 12 text for DB13/DB12/DB11 and STBY is partly garbled. Serial-mode handling for DB[13:11] (tied"
        ],
        "pages_sent": 7,
        "cost_usd": 0.1365,
        "at": "2026-10-19T09:33:21"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588885146837110784",
        "pages": 32,
        "sha256": "67071afe34b463ae",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 64,
        "described": 64,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          12.0,
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "b0c827bc5c05552175d28affe44a5bd2ab45c9c36efff6ff07a74cc449b13db4",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ad7656bstz-1-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,
        "footprint_binding": "identity",
        "sha256": "d3c0962ff248d9fbcbbf98b09588f9d1d85064c280d3e017c2040abe21827f7f",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}