ADS1191IRSMR

{
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  "type": "component",
  "slug": "ads1191irsmr",
  "title": "ADS1191IRSMR",
  "brief": "Texas Instruments Analog Front End (AFEs), VQFN-32-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
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  "component": {
    "mpn": "ADS1191IRSMR",
    "manufacturer": "Texas Instruments",
    "package": "VQFN-32-EP(4x4)",
    "pin_count": 33,
    "category": "ADC/DAC/Data Conversion",
    "subcategory": "Analog Front End (AFEs)",
    "datasheet": "https://www.ti.com/lit/ds/symlink/ads1191.pdf",
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    "distributor_links": {
      "lcsc": "C528625",
      "digikey": "296-50883-2-ND",
      "mouser": "595-ADS1191IRSMR"
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    "distributor_check": {
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    },
    "pins": [
      {
        "number": "1",
        "name": "PGA1N",
        "type": "output",
        "description": "Differential analog negative output of PGA channel 1."
      },
      {
        "number": "2",
        "name": "PGA1P",
        "type": "output",
        "description": "Differential analog positive output of PGA channel 1."
      },
      {
        "number": "3",
        "name": "IN1N",
        "type": "input",
        "description": "Differential analog negative input 1; excludes effects of noise, linearity, offset, and gain error."
      },
      {
        "number": "4",
        "name": "IN1P",
        "type": "input",
        "description": "Differential analog positive input 1; excludes effects of noise, linearity, offset, and gain error."
      },
      {
        "number": "5",
        "name": "IN2N",
        "type": "input",
        "description": "Differential analog negative input 2; excludes effects of noise, linearity, offset, and gain error."
      },
      {
        "number": "6",
        "name": "IN2P",
        "type": "input",
        "description": "Differential analog positive input 2; excludes effects of noise, linearity, offset, and gain error."
      },
      {
        "number": "7",
        "name": "PGA2N",
        "type": "output",
        "description": "Differential analog negative output of PGA channel 2."
      },
      {
        "number": "8",
        "name": "PGA2P",
        "type": "output",
        "description": "Differential analog positive output of PGA channel 2."
      },
      {
        "number": "9",
        "name": "VREFP",
        "type": "bidirectional",
        "description": "Positive reference voltage; analog input/output pin."
      },
      {
        "number": "10",
        "name": "VREFN",
        "type": "input",
        "description": "Negative reference voltage."
      },
      {
        "number": "11",
        "name": "VCAP1",
        "type": "passive",
        "description": "Analog bypass capacitor connection."
      },
      {
        "number": "12",
        "name": "AVDD",
        "type": "power_in",
        "description": "Analog supply; AVDD to AVSS is specified from -0.3 V to +7 V absolute maximum."
      },
      {
        "number": "13",
        "name": "AVSS",
        "type": "power_in",
        "description": "Analog ground."
      },
      {
        "number": "14",
        "name": "CLKSEL",
        "type": "input",
        "description": "Digital input that selects the master clock source."
      },
      {
        "number": "15",
        "name": "PWDN/RESET",
        "type": "input",
        "description": "Power-down and system reset input; active low."
      },
      {
        "number": "16",
        "name": "START",
        "type": "input",
        "description": "Digital input to start conversions."
      },
      {
        "number": "17",
        "name": "CLK",
        "type": "input",
        "description": "Master clock input."
      },
      {
        "number": "18",
        "name": "CS",
        "type": "input",
        "description": "SPI chip select digital input."
      },
      {
        "number": "19",
        "name": "DIN",
        "type": "input",
        "description": "SPI serial data input."
      },
      {
        "number": "20",
        "name": "SCLK",
        "type": "input",
        "description": "SPI serial clock digital input."
      },
      {
        "number": "21",
        "name": "DOUT",
        "type": "output",
        "description": "SPI serial data output."
      },
      {
        "number": "22",
        "name": "DRDY",
        "type": "output",
        "description": "Data ready digital output; active low."
      },
      {
        "number": "23",
        "name": "DVDD",
        "type": "power_in",
        "description": "Digital power supply; DVDD to DGND is specified from -0.3 V to +7 V absolute maximum."
      },
      {
        "number": "24",
        "name": "DGND",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "25",
        "name": "GPIO2/RCLK2",
        "type": "bidirectional",
        "description": "General-purpose digital input/output GPIO2."
      },
      {
        "number": "26",
        "name": "GPIO1/RCLK1",
        "type": "bidirectional",
        "description": "General-purpose digital input/output GPIO1."
      },
      {
        "number": "27",
        "name": "VCAP2",
        "type": "passive",
        "description": "Analog bypass capacitor connection."
      },
      {
        "number": "28",
        "name": "RLDINV",
        "type": "input",
        "description": "Right leg drive inverting input."
      },
      {
        "number": "29",
        "name": "RLDIN/RLDREF",
        "type": "input",
        "description": "Right leg drive input to the MUX and RLD reference."
      },
      {
        "number": "30",
        "name": "RLDOUT",
        "type": "input",
        "description": "Right leg drive output pin, listed as an analog input in the datasheet table."
      },
      {
        "number": "31",
        "name": "IN3P",
        "type": "bidirectional",
        "description": "Differential analog positive input 3; analog input/output pin."
      },
      {
        "number": "32",
        "name": "IN3N",
        "type": "bidirectional",
        "description": "Differential analog negative input 3; analog input/output pin."
      },
      {
        "number": "33",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
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        "at": "2026-11-05T21:19:42"
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        "pages": 70,
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        "source_tier": "mfr"
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        "described": 33,
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  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "VQFN-32-EP(4x4)",
      "Category": "ADC/DAC/Data Conversion",
      "Pins": "33"
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          "name": "Electrostatic discharge HBM",
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          "name": "Data rate",
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          "name": "VREF accuracy",
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          "name": "Internal oscillator clock frequency accuracy",
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