ADS7871IDBR

{
  "slug": "ads7871idbr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments ADCs/DACs - Special Purpose, SSOP-28. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "data acquisition",
    "ads7871idbr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
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    "ads7871idbr.step",
    "ads7871idbr.lbr",
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  "component": {
    "mpn": "ADS7871IDBR",
    "manufacturer": "Texas Instruments",
    "package": "SSOP-28",
    "pin_count": 28,
    "category": "Data Acquisition",
    "subcategory": "ADCs/DACs - Special Purpose",
    "datasheet": "https://www.ti.com/lit/ds/symlink/ads7871.pdf",
    "parts": {
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      "model_3d_step_plain": "ads7871idbr.step",
      "lbr": "ads7871idbr.lbr"
    },
    "distributor_links": {
      "lcsc": "C1847958",
      "digikey": "296-ADS7871IDBRTR-ND",
      "mouser": "595-ADS7871IDBR"
    },
    "distributor_check": {
      "checked_at": "2026-11-05T21:17:00Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-ADS7871IDBRTR-ND",
        "status": "found"
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        "pn": "595-ADS7871IDBR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "LN0",
        "type": "passive",
        "description": "MUX analog input line 0, linear operation between GND − 0.2 V and VDD + 0.2 V."
      },
      {
        "number": "2",
        "name": "LN1",
        "type": "passive",
        "description": "MUX analog input line 1, linear operation between GND − 0.2 V and VDD + 0.2 V."
      },
      {
        "number": "3",
        "name": "LN2",
        "type": "passive",
        "description": "MUX analog input line 2, linear operation between GND − 0.2 V and VDD + 0.2 V."
      },
      {
        "number": "4",
        "name": "LN3",
        "type": "passive",
        "description": "MUX analog input line 3, linear operation between GND − 0.2 V and VDD + 0.2 V."
      },
      {
        "number": "5",
        "name": "LN4",
        "type": "passive",
        "description": "MUX analog input line 4, linear operation between GND − 0.2 V and VDD + 0.2 V."
      },
      {
        "number": "6",
        "name": "LN5",
        "type": "passive",
        "description": "MUX analog input line 5, linear operation between GND − 0.2 V and VDD + 0.2 V."
      },
      {
        "number": "7",
        "name": "LN6",
        "type": "passive",
        "description": "MUX analog input line 6, linear operation between GND − 0.2 V and VDD + 0.2 V."
      },
      {
        "number": "8",
        "name": "LN7",
        "type": "passive",
        "description": "MUX analog input line 7, linear operation between GND − 0.2 V and VDD + 0.2 V."
      },
      {
        "number": "9",
        "name": "RESET",
        "type": "input",
        "description": "Master reset input that zeros all registers."
      },
      {
        "number": "10",
        "name": "RISE/FALL",
        "type": "input",
        "description": "Sets the active SCLK edge: low selects the falling edge and high selects the rising edge."
      },
      {
        "number": "11",
        "name": "I/O0",
        "type": "bidirectional",
        "description": "General-purpose digital input or output signal, configurable through the serial interface."
      },
      {
        "number": "12",
        "name": "I/O1",
        "type": "bidirectional",
        "description": "General-purpose digital input or output signal, configurable through the serial interface."
      },
      {
        "number": "13",
        "name": "I/O2",
        "type": "bidirectional",
        "description": "General-purpose digital input or output signal, configurable through the serial interface."
      },
      {
        "number": "14",
        "name": "I/O3",
        "type": "bidirectional",
        "description": "General-purpose digital input or output signal, configurable through the serial interface."
      },
      {
        "number": "15",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection, grounded internally on the ADS7871 and weakly pulled down on the ADS7870."
      },
      {
        "number": "16",
        "name": "CONVERT",
        "type": "input",
        "description": "A 0-to-1 transition starts a conversion cycle."
      },
      {
        "number": "17",
        "name": "BUSY",
        "type": "output",
        "description": "Goes high to indicate that the converter is busy."
      },
      {
        "number": "18",
        "name": "OSC ENABLE",
        "type": "input",
        "description": "Low sets CCLK as an input; high sets CCLK as an output and turns on the internal oscillator."
      },
      {
        "number": "19",
        "name": "CCLK",
        "type": "bidirectional",
        "description": "Outputs the internal oscillator when OSC ENABLE is high, otherwise acts as the external conversion clock input."
      },
      {
        "number": "20",
        "name": "SCLK",
        "type": "input",
        "description": "Serial data input/output transfer clock whose active edge is set by RISE/FALL."
      },
      {
        "number": "21",
        "name": "DIN",
        "type": "bidirectional",
        "description": "Serial data input in 3-wire mode; in 2-wire mode serial data output also appears on this pin."
      },
      {
        "number": "22",
        "name": "DOUT",
        "type": "output",
        "description": "Serial data output, driven when CS is low and high impedance when CS is high."
      },
      {
        "number": "23",
        "name": "CS",
        "type": "input",
        "description": "Chip select: low enables the serial interface and high disables it, without directly enabling or disabling conversion."
      },
      {
        "number": "24",
        "name": "VDD",
        "type": "power_in",
        "description": "Power supply voltage, 2.7 V to 5.5 V."
      },
      {
        "number": "25",
        "name": "GND",
        "type": "power_in",
        "description": "Power supply ground."
      },
      {
        "number": "26",
        "name": "VREF",
        "type": "power_in",
        "description": "On-chip voltage reference output of 2.048 V or 2.5 V."
      },
      {
        "number": "27",
        "name": "BUFIN",
        "type": "input",
        "description": "Input to the reference buffer amplifier."
      },
      {
        "number": "28",
        "name": "BUFOUT/REFIN",
        "type": "bidirectional",
        "description": "Output of the reference buffer amplifier and reference input to the A/D converter."
      }
    ],
    "provenance": {
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      "factory_chain": {
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        "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": [],
        "pages_sent": 12,
        "cost_usd": 0.0236,
        "at": "2026-11-05T21:16:48"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/ads7871.pdf",
        "pages": 48,
        "sha256": "a3e9bb79e44d0324",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 28,
        "described": 28,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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}