PCM1681TPWPRQ1

{
  "slug": "pcm1681tpwprq1",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments ADCs/DACs - Special Purpose, HTSSOP-28. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "data acquisition",
    "pcm1681tpwprq1",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "pcm1681tpwprq1.kicad_sym",
    "pcm1681tpwprq1.kicad_mod",
    "pcm1681tpwprq1.glb",
    "pcm1681tpwprq1.step",
    "pcm1681tpwprq1.lbr",
    "docs/hero.png",
    "docs/pcm1681tpwprq1-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "component": {
    "mpn": "PCM1681TPWPRQ1",
    "manufacturer": "Texas Instruments",
    "package": "HTSSOP-28",
    "pin_count": 29,
    "category": "Data Acquisition",
    "subcategory": "ADCs/DACs - Special Purpose",
    "datasheet": "https://www.ti.com/cn/lit/gpn/pcm1681-q1",
    "parts": {
      "symbol": "pcm1681tpwprq1.kicad_sym",
      "footprint": "pcm1681tpwprq1.kicad_mod",
      "model_3d": "pcm1681tpwprq1-etched.glb",
      "model_3d_plain": "pcm1681tpwprq1.glb",
      "model_3d_step": "pcm1681tpwprq1-etched.step",
      "model_3d_step_plain": "pcm1681tpwprq1.step",
      "lbr": "pcm1681tpwprq1.lbr"
    },
    "distributor_links": {
      "lcsc": "C2667052",
      "digikey": "296-29414-2-ND",
      "mouser": "595-PCM1681TPWPRQ1"
    },
    "distributor_check": {
      "checked_at": "2026-10-01T06:49:19Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-29414-2-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "595-PCM1681TPWPRQ1",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "ZR1/ZR1/FMT0",
        "type": "bidirectional",
        "description": "Zero-flag output 1 for SPI/I2C modes or format control input 0 for parallel H/W mode; Schmitt-trigger 5-V tolerant."
      },
      {
        "number": "2",
        "name": "MS/ADR/FMT1",
        "type": "input",
        "description": "Select input for SPI, address input for I2C, format control input 1 for H/W; Schmitt-trigger 5-V tolerant."
      },
      {
        "number": "3",
        "name": "MC/SCL/DEMP",
        "type": "input",
        "description": "Shift clock input for SPI, serial clock input for I2C, de-emphasis control for H/W; Schmitt-trigger 5-V tolerant."
      },
      {
        "number": "4",
        "name": "MD/SDA/MUTE",
        "type": "bidirectional",
        "description": "Serial data input for SPI, serial data input/output for I2C, mute control for H/W; Schmitt-trigger 5-V tolerant, open-drain output in I2C mode."
      },
      {
        "number": "5",
        "name": "SCK",
        "type": "input",
        "description": "System clock input with frequency of 128, 192, 256, 384, 512, 768, or 1152 fS (1.024 to 36.864 MHz)."
      },
      {
        "number": "6",
        "name": "DATA1",
        "type": "input",
        "description": "Serial audio data input for VOUT1 and VOUT2; Schmitt-trigger 5-V tolerant."
      },
      {
        "number": "7",
        "name": "BCK",
        "type": "input",
        "description": "Shift clock input for serial audio data; Schmitt-trigger 5-V tolerant."
      },
      {
        "number": "8",
        "name": "LRCK",
        "type": "input",
        "description": "Left/right clock input with frequency equal to sampling rate fS; 5-V tolerant."
      },
      {
        "number": "9",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital power supply, 3.3 V nominal (3.0 to 3.6 V operating range)."
      },
      {
        "number": "10",
        "name": "DGND",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "11",
        "name": "DATA2",
        "type": "input",
        "description": "Serial audio data input for VOUT3 and VOUT4; Schmitt-trigger 5-V tolerant."
      },
      {
        "number": "12",
        "name": "DATA3",
        "type": "input",
        "description": "Serial audio data input for VOUT5 and VOUT6; Schmitt-trigger 5-V tolerant."
      },
      {
        "number": "13",
        "name": "DATA4",
        "type": "input",
        "description": "Serial audio data input for VOUT7 and VOUT8; Schmitt-trigger 5-V tolerant."
      },
      {
        "number": "14",
        "name": "MSEL",
        "type": "input",
        "description": "Mode control select for I2C (tied to DGND), SPI (tied to VDD), or parallel H/W (pull-up/pull-down for wide/narrow oversampling); VDD/2 biased quad-state input."
      },
      {
        "number": "15",
        "name": "VOUT8",
        "type": "output",
        "description": "Unbalanced audio output for right-channel of DATA4, 3.75 VPP typical into 5 k\u03a9 load."
      },
      {
        "number": "16",
        "name": "VOUT7",
        "type": "output",
        "description": "Unbalanced audio output for left-channel of DATA4, 3.75 VPP typical into 5 k\u03a9 load."
      },
      {
        "number": "17",
        "name": "VCC1",
        "type": "power_in",
        "description": "Analog power supply, 5 V nominal (4.5 to 5.5 V operating range)."
      },
      {
        "number": "18",
        "name": "AGND1",
        "type": "power_in",
        "description": "Analog ground."
      },
      {
        "number": "19",
        "name": "VOUT6",
        "type": "output",
        "description": "Unbalanced audio output for right-channel of DATA3, 3.75 VPP typical into 5 k\u03a9 load."
      },
      {
        "number": "20",
        "name": "VOUT5",
        "type": "output",
        "description": "Unbalanced audio output for left-channel of DATA3, 3.75 VPP typical into 5 k\u03a9 load."
      },
      {
        "number": "21",
        "name": "VOUT4",
        "type": "output",
        "description": "Unbalanced audio output for right-channel of DATA2, 3.75 VPP typical into 5 k\u03a9 load."
      },
      {
        "number": "22",
        "name": "VOUT3",
        "type": "output",
        "description": "Unbalanced audio output for left-channel of DATA2, 3.75 VPP typical into 5 k\u03a9 load."
      },
      {
        "number": "23",
        "name": "VCC2",
        "type": "power_in",
        "description": "Analog power supply, 5 V nominal (4.5 to 5.5 V operating range)."
      },
      {
        "number": "24",
        "name": "AGND2",
        "type": "power_in",
        "description": "Analog ground."
      },
      {
        "number": "25",
        "name": "VCOM",
        "type": "output",
        "description": "Common voltage output biased to 0.486 VCC; requires 10-\u03bcF capacitor bypass to AGND."
      },
      {
        "number": "26",
        "name": "VOUT2",
        "type": "output",
        "description": "Unbalanced audio output for right-channel of DATA1, 3.75 VPP typical into 5 k\u03a9 load."
      },
      {
        "number": "27",
        "name": "VOUT1",
        "type": "output",
        "description": "Unbalanced audio output for left-channel of DATA1, 3.75 VPP typical into 5 k\u03a9 load."
      },
      {
        "number": "28",
        "name": "ZR2",
        "type": "output",
        "description": "Zero-flag output 2, detects silence on assigned channels; active-high by default."
      },
      {
        "number": "29",
        "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-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "exposed pad 29 added from the footprint"
        ],
        "pages_sent": 12,
        "cost_usd": 0.1602,
        "at": "2026-10-01T06:49:04"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/pcm1681-q1",
        "pages": 46,
        "sha256": "a111585ea2f64b35",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 29,
        "described": 29,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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}