ADS8555SPM

{
  "schema_version": 1,
  "type": "component",
  "slug": "ads8555spm",
  "title": "ADS8555SPM",
  "brief": "Texas Instruments Analog To Digital Converters (ADC), LQFP-64(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "data acquisition",
    "ads8555spm",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "ADS8555SPM",
    "manufacturer": "Texas Instruments",
    "package": "LQFP-64(10x10)",
    "pin_count": 64,
    "category": "Data Acquisition",
    "subcategory": "Analog To Digital Converters (ADC)",
    "datasheet": "https://www.ti.com/cn/lit/gpn/ads8555",
    "parts": {
      "symbol": "ads8555spm.kicad_sym",
      "footprint": "ads8555spm.kicad_mod",
      "model_3d": "ads8555spm-hero.glb",
      "model_3d_plain": "ads8555spm.glb",
      "model_3d_step": "ads8555spm-etched.step",
      "model_3d_step_plain": "ads8555spm.step",
      "lbr": "ads8555spm.lbr"
    },
    "distributor_links": {
      "lcsc": 1542916,
      "digikey": "296-28206-ND",
      "mouser": "595-ADS8555SPM"
    },
    "distributor_check": {
      "checked_at": "2026-10-06T17:11:15Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-28206-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-ADS8555SPM",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "DB14/REFBUFEN",
        "type": "bidirectional",
        "description": "Data bit 14 input/output in parallel interface or reference buffer enable input in hardware mode (low enables, high disables); connect to BGND or BVDD in software mode."
      },
      {
        "number": "2",
        "name": "DB13/SDI",
        "type": "bidirectional",
        "description": "Data bit 13 input/output in parallel interface or serial data input in software mode; connect to BGND in hardware mode."
      },
      {
        "number": "3",
        "name": "DB12",
        "type": "bidirectional",
        "description": "Data bit 12 input/output; connect to BGND in serial interface."
      },
      {
        "number": "4",
        "name": "DB11",
        "type": "bidirectional",
        "description": "Data bit 11 input/output; connect to BGND in serial interface."
      },
      {
        "number": "5",
        "name": "DB10/SDO_C",
        "type": "bidirectional",
        "description": "Data bit 10 input/output or channel C serial data output when SEL_C=1; tie to BGND when SEL_C=0."
      },
      {
        "number": "6",
        "name": "DB9/SDO_B",
        "type": "bidirectional",
        "description": "Data bit 9 input/output or channel B serial data output when SEL_B=1; also provides channel C1 data when SEL_C=0."
      },
      {
        "number": "7",
        "name": "DB8/SDO_A",
        "type": "bidirectional",
        "description": "Data bit 8 input/output or channel A serial data output; acts as single output for all channels when SEL_C=0 and SEL_B=0."
      },
      {
        "number": "8",
        "name": "BGND",
        "type": "power_in",
        "description": "Buffer I/O ground; connect to digital ground plane."
      },
      {
        "number": "9",
        "name": "BVDD",
        "type": "power_in",
        "description": "Buffer I/O supply 2.7V to 5.5V; decouple with 1-μF ceramic or 100-nF and 10-μF ceramic capacitors to BGND."
      },
      {
        "number": "10",
        "name": "DB7/HBEN/DCEN",
        "type": "bidirectional",
        "description": "Data bit 7 in word mode or high byte enable in byte mode (high outputs high byte first) or daisy-chain enable input."
      },
      {
        "number": "11",
        "name": "DB6/SCLK",
        "type": "bidirectional",
        "description": "Data bit 6 input/output in word mode or serial clock input (36 MHz max) in serial mode; connect to BGND or BVDD in byte mode."
      },
      {
        "number": "12",
        "name": "DB5/DCIN_A",
        "type": "bidirectional",
        "description": "Data bit 5 in word mode or daisy-chain data input for channel A when DCEN=1; connect to BGND or BVDD in byte mode."
      },
      {
        "number": "13",
        "name": "DB4/DCIN_B",
        "type": "bidirectional",
        "description": "Data bit 4 in word mode or daisy-chain data input for channel B when SEL_B=1 and DCEN=1; connect to BGND or BVDD in byte mode."
      },
      {
        "number": "14",
        "name": "DB3/DCIN_C",
        "type": "bidirectional",
        "description": "Data bit 3 in word mode or daisy-chain data input for channel C when SEL_C=1 and DCEN=1; connect to BGND or BVDD in byte mode."
      },
      {
        "number": "15",
        "name": "DB2/SEL_C",
        "type": "bidirectional",
        "description": "Data bit 2 in word mode or SDO_C select input (high enables SDO_C, low disables); connect to BGND or BVDD in byte mode."
      },
      {
        "number": "16",
        "name": "DB1/SEL_B",
        "type": "bidirectional",
        "description": "Data bit 1 in word mode or SDO_B select input (high enables SDO_B, low disables); connect to BGND or BVDD in byte mode."
      },
      {
        "number": "17",
        "name": "DB0/SEL_A",
        "type": "bidirectional",
        "description": "Data bit 0 (LSB) in word mode or SDO_A select input (high enables, must always be high in byte mode); connect to BGND or BVDD."
      },
      {
        "number": "18",
        "name": "BUSY/INT",
        "type": "output",
        "description": "Converter busy status output or interrupt output depending on CR bit C21; transitions high when conversion starts and low when conversion data latched or after completion."
      },
      {
        "number": "19",
        "name": "CS/FS",
        "type": "input",
        "description": "Chip select input for parallel mode (parallel interface enabled when low) or frame synchronization input for serial mode."
      },
      {
        "number": "20",
        "name": "RD",
        "type": "input",
        "description": "Read data input; parallel data output enabled when low, disabled when high; connect to BGND in serial mode."
      },
      {
        "number": "21",
        "name": "CONVST_C",
        "type": "input",
        "description": "Conversion start for channel pair C; rising edge initiates simultaneous conversion of CH_C[1:0] in hardware mode."
      },
      {
        "number": "22",
        "name": "CONVST_B",
        "type": "input",
        "description": "Conversion start for channel pair B; rising edge initiates simultaneous conversion of CH_B[1:0] in hardware mode."
      },
      {
        "number": "23",
        "name": "CONVST_A",
        "type": "input",
        "description": "Conversion start for channel pair A; rising edge initiates simultaneous conversion of CH_A[1:0] in hardware mode or all selected channels in software mode."
      },
      {
        "number": "24",
        "name": "STBY",
        "type": "input",
        "description": "Standby mode input; device powered down including internal clock and reference when low, operates in normal mode when high."
      },
      {
        "number": "25",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground; connect to analog ground plane; can have dedicated ground if potential difference from AGND ≤±300 mV."
      },
      {
        "number": "26",
        "name": "AVDD",
        "type": "power_in",
        "description": "Analog power supply 4.5V to 5.5V; decouple each pin with 100-nF ceramic to AGND plus additional 10-μF capacitor; can have dedicated supply if ≤±300 mV difference."
      },
      {
        "number": "27",
        "name": "RANGE/XCLK",
        "type": "input",
        "description": "Input voltage range select in hardware mode (low=±4VREF, high=±2VREF) or external conversion clock input/internal clock output in software mode."
      },
      {
        "number": "28",
        "name": "RESET",
        "type": "input",
        "description": "Reset input active high; aborts ongoing conversions and resets control register to 0x000003FF; pulse must be ≥50 ns."
      },
      {
        "number": "29",
        "name": "WORD/BYTE",
        "type": "input",
        "description": "Output mode selection; low selects word mode using DB[15:0], high selects byte mode using DB[15:8]; connect to BGND in serial mode."
      },
      {
        "number": "30",
        "name": "HVSS",
        "type": "power_in",
        "description": "Negative supply voltage for analog inputs −16.5V to −5V; decouple with 100-nF ceramic next to device and 10-μF capacitor close to device."
      },
      {
        "number": "31",
        "name": "HVDD",
        "type": "power_in",
        "description": "Positive supply voltage for analog inputs 5V to 16.5V; decouple with 100-nF ceramic next to device and 10-μF capacitor close to device."
      },
      {
        "number": "32",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground; connect to analog ground plane."
      },
      {
        "number": "33",
        "name": "CH_A0",
        "type": "input",
        "description": "Analog input for channel A0; input voltage range controlled by RANGE pin in hardware mode or CR bit C26 in software mode."
      },
      {
        "number": "34",
        "name": "AVDD",
        "type": "power_in",
        "description": "Analog power supply 4.5V to 5.5V; decouple with 100-nF ceramic to AGND plus additional 10-μF capacitor."
      },
      {
        "number": "35",
        "name": "AVDD",
        "type": "power_in",
        "description": "Analog power supply 4.5V to 5.5V; decouple with 100-nF ceramic to AGND plus additional 10-μF capacitor."
      },
      {
        "number": "36",
        "name": "CH_A1",
        "type": "input",
        "description": "Analog input for channel A1; input voltage range controlled by RANGE pin in hardware mode or CR bit C26 in software mode."
      },
      {
        "number": "37",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground; connect to analog ground plane."
      },
      {
        "number": "38",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground; connect to analog ground plane."
      },
      {
        "number": "39",
        "name": "CH_B0",
        "type": "input",
        "description": "Analog input for channel B0; input voltage range controlled by RANGE pin in hardware mode or CR bit C27 in software mode."
      },
      {
        "number": "40",
        "name": "AVDD",
        "type": "power_in",
        "description": "Analog power supply 4.5V to 5.5V; decouple with 100-nF ceramic to AGND plus additional 10-μF capacitor."
      },
      {
        "number": "41",
        "name": "AVDD",
        "type": "power_in",
        "description": "Analog power supply 4.5V to 5.5V; decouple with 100-nF ceramic to AGND plus additional 10-μF capacitor."
      },
      {
        "number": "42",
        "name": "CH_B1",
        "type": "input",
        "description": "Analog input for channel B1; input voltage range controlled by RANGE pin in hardware mode or CR bit C27 in software mode."
      },
      {
        "number": "43",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground; connect to analog ground plane."
      },
      {
        "number": "44",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground; connect to analog ground plane."
      },
      {
        "number": "45",
        "name": "CH_C0",
        "type": "input",
        "description": "Analog input for channel C0; input voltage range controlled by RANGE pin in hardware mode or CR bit C28 in software mode."
      },
      {
        "number": "46",
        "name": "AVDD",
        "type": "power_in",
        "description": "Analog power supply 4.5V to 5.5V; decouple with 100-nF ceramic to AGND plus additional 10-μF capacitor."
      },
      {
        "number": "47",
        "name": "AVDD",
        "type": "power_in",
        "description": "Analog power supply 4.5V to 5.5V; decouple with 100-nF ceramic to AGND plus additional 10-μF capacitor."
      },
      {
        "number": "48",
        "name": "CH_C1",
        "type": "input",
        "description": "Analog input for channel C1; input voltage range controlled by RANGE pin in hardware mode or CR bit C28 in software mode."
      },
      {
        "number": "49",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground; connect to analog ground plane."
      },
      {
        "number": "50",
        "name": "AVDD",
        "type": "power_in",
        "description": "Analog power supply 4.5V to 5.5V; decouple with 100-nF ceramic to AGND plus additional 10-μF capacitor."
      },
      {
        "number": "51",
        "name": "REFIO",
        "type": "bidirectional",
        "description": "Reference voltage input/output 0.5V to 3.025V; internal reference enabled through REFEN/WR pin; output value controlled by internal DAC; connect 470-nF ceramic to pin 52."
      },
      {
        "number": "52",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground; connect to analog ground plane."
      },
      {
        "number": "53",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground; connect to analog ground plane."
      },
      {
        "number": "54",
        "name": "REFC_A",
        "type": "input",
        "description": "Reference decoupling capacitor connection for channel A; connect 10-μF ceramic decoupling capacitor between this pin and pin 53."
      },
      {
        "number": "55",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground; connect to analog ground plane."
      },
      {
        "number": "56",
        "name": "REFC_B",
        "type": "input",
        "description": "Reference decoupling capacitor connection for channel B; connect 10-μF ceramic decoupling capacitor between this pin and pin 55."
      },
      {
        "number": "57",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground; connect to analog ground plane."
      },
      {
        "number": "58",
        "name": "REFC_C",
        "type": "input",
        "description": "Reference decoupling capacitor connection for channel C; connect 10-μF ceramic decoupling capacitor between this pin and pin 57."
      },
      {
        "number": "59",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground; connect to analog ground plane."
      },
      {
        "number": "60",
        "name": "AVDD",
        "type": "power_in",
        "description": "Analog power supply 4.5V to 5.5V; decouple with 100-nF ceramic to AGND plus additional 10-μF capacitor."
      },
      {
        "number": "61",
        "name": "PAR/SER",
        "type": "input",
        "description": "Interface mode selection input; low selects parallel interface, high enables serial interface."
      },
      {
        "number": "62",
        "name": "HW/SW",
        "type": "input",
        "description": "Mode selection input; low selects hardware mode (configured by external pins), high selects software mode (configured by control register)."
      },
      {
        "number": "63",
        "name": "REFEN/WR",
        "type": "input",
        "description": "Internal reference enable input in hardware mode (high enables internal reference) or write input in software mode; connect to BGND or BVDD in serial software mode."
      },
      {
        "number": "64",
        "name": "DB15",
        "type": "bidirectional",
        "description": "Data bit 15 (MSB) input/output in parallel interface; connect to BGND in serial interface."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 12,
        "cost_usd": 0.2193,
        "at": "2026-10-06T17:10:47"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/ads8555",
        "pages": 46,
        "sha256": "2efad68b2c227003",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 64,
        "described": 64,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "LQFP-64(10x10)",
      "Category": "Data Acquisition",
      "Pins": "64"
    }
  },
  "variants": [],
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  "discovery_pitch": "ADS8555SPM (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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}