ADS1194CPAGR

{
  "schema_version": 1,
  "type": "component",
  "slug": "ads1194cpagr",
  "title": "ADS1194CPAGR",
  "brief": "Texas Instruments Analog Front End (AFE), TQFP-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",
    "ads1194cpagr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "ADS1194CPAGR",
    "manufacturer": "Texas Instruments",
    "package": "TQFP-64(10x10)",
    "pin_count": 64,
    "category": "Data Acquisition",
    "subcategory": "Analog Front End (AFE)",
    "datasheet": "https://www.ti.com/cn/lit/gpn/ads1194",
    "parts": {
      "symbol": "ads1194cpagr.kicad_sym",
      "footprint": "ads1194cpagr.kicad_mod",
      "model_3d": "ads1194cpagr-etched.glb",
      "model_3d_plain": "ads1194cpagr.glb",
      "model_3d_step": "ads1194cpagr-etched.step",
      "model_3d_step_plain": "ads1194cpagr.step",
      "lbr": "ads1194cpagr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2864654"
    },
    "pins": [
      {
        "number": "1",
        "name": "IN8N",
        "type": "input",
        "description": "Differential analog negative input 8 (ADS1198 only); connect unused inputs to AVDD."
      },
      {
        "number": "2",
        "name": "IN8P",
        "type": "input",
        "description": "Differential analog positive input 8 (ADS1198 only); connect unused inputs to AVDD."
      },
      {
        "number": "3",
        "name": "IN7N",
        "type": "input",
        "description": "Differential analog negative input 7 (ADS1198 only); connect unused inputs to AVDD."
      },
      {
        "number": "4",
        "name": "IN7P",
        "type": "input",
        "description": "Differential analog positive input 7 (ADS1198 only); connect unused inputs to AVDD."
      },
      {
        "number": "5",
        "name": "IN6N",
        "type": "input",
        "description": "Differential analog negative input 6 (ADS1196/8 only); connect unused inputs to AVDD."
      },
      {
        "number": "6",
        "name": "IN6P",
        "type": "input",
        "description": "Differential analog positive input 6 (ADS1196/8 only); connect unused inputs to AVDD."
      },
      {
        "number": "7",
        "name": "IN5N",
        "type": "input",
        "description": "Differential analog negative input 5 (ADS1196/8 only); connect unused inputs to AVDD."
      },
      {
        "number": "8",
        "name": "IN5P",
        "type": "input",
        "description": "Differential analog positive input 5 (ADS1196/8 only); connect unused inputs to AVDD."
      },
      {
        "number": "9",
        "name": "IN4N",
        "type": "input",
        "description": "Differential analog negative input 4; connect unused inputs to AVDD."
      },
      {
        "number": "10",
        "name": "IN4P",
        "type": "input",
        "description": "Differential analog positive input 4; connect unused inputs to AVDD."
      },
      {
        "number": "11",
        "name": "IN3N",
        "type": "input",
        "description": "Differential analog negative input 3; connect unused inputs to AVDD."
      },
      {
        "number": "12",
        "name": "IN3P",
        "type": "input",
        "description": "Differential analog positive input 3; connect unused inputs to AVDD."
      },
      {
        "number": "13",
        "name": "IN2N",
        "type": "input",
        "description": "Differential analog negative input 2; connect unused inputs to AVDD."
      },
      {
        "number": "14",
        "name": "IN2P",
        "type": "input",
        "description": "Differential analog positive input 2; connect unused inputs to AVDD."
      },
      {
        "number": "15",
        "name": "IN1N",
        "type": "input",
        "description": "Differential analog negative input 1; connect unused inputs to AVDD."
      },
      {
        "number": "16",
        "name": "IN1P",
        "type": "input",
        "description": "Differential analog positive input 1; connect unused inputs to AVDD."
      },
      {
        "number": "17",
        "name": "TESTP_PACE_OUT1",
        "type": "bidirectional",
        "description": "Internal test signal or pace detection output based on register settings; short to AVDD if unused."
      },
      {
        "number": "18",
        "name": "TESTN_PACE_OUT2",
        "type": "bidirectional",
        "description": "Internal test signal or pace detection output based on register settings; short to AVDD if unused."
      },
      {
        "number": "19",
        "name": "AVDD",
        "type": "power_in",
        "description": "Analog supply voltage, 2.7V to 5.25V."
      },
      {
        "number": "20",
        "name": "AVSS",
        "type": "power_in",
        "description": "Analog ground, reference for analog supply."
      },
      {
        "number": "21",
        "name": "AVDD",
        "type": "power_in",
        "description": "Analog supply voltage, 2.7V to 5.25V."
      },
      {
        "number": "22",
        "name": "AVDD",
        "type": "power_in",
        "description": "Analog supply voltage, 2.7V to 5.25V."
      },
      {
        "number": "23",
        "name": "AVSS",
        "type": "power_in",
        "description": "Analog ground, reference for analog supply."
      },
      {
        "number": "24",
        "name": "VREFP",
        "type": "bidirectional",
        "description": "Positive reference voltage, 2.5V for 3V supply or 4.1V for 5V supply; internally generated as 2.4V or 4.0V."
      },
      {
        "number": "25",
        "name": "VREFN",
        "type": "input",
        "description": "Negative reference voltage, typically connected to AVSS for internal reference mode."
      },
      {
        "number": "26",
        "name": "VCAP4",
        "type": "passive",
        "description": "Analog supply bypass capacitor; connect to AVSS with 10µF and 0.1µF capacitors placed as close to package as possible."
      },
      {
        "number": "27",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection; leave floating."
      },
      {
        "number": "28",
        "name": "VCAP1",
        "type": "passive",
        "description": "Analog supply bypass capacitor; connect to AVSS with 10µF and 0.1µF capacitors placed as close to package as possible."
      },
      {
        "number": "29",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection; leave floating."
      },
      {
        "number": "30",
        "name": "VCAP2",
        "type": "passive",
        "description": "Analog supply bypass capacitor; connect to AVSS with 1µF and 0.1µF capacitors placed as close to package as possible."
      },
      {
        "number": "31",
        "name": "RESV1",
        "type": "input",
        "description": "Reserved for future use; must tie to logic low (DGND)."
      },
      {
        "number": "32",
        "name": "AVSS",
        "type": "power_in",
        "description": "Analog ground, reference for analog supply."
      },
      {
        "number": "33",
        "name": "DGND",
        "type": "power_in",
        "description": "Digital ground, reference for digital supply."
      },
      {
        "number": "34",
        "name": "DIN",
        "type": "input",
        "description": "SPI serial data input; device latches data on falling edge of SCLK."
      },
      {
        "number": "35",
        "name": "PWDN",
        "type": "input",
        "description": "Power-down active-low input; pull low to enter low-power power-down mode."
      },
      {
        "number": "36",
        "name": "RESET",
        "type": "input",
        "description": "System reset active-low input; apply minimum 2 tCLK low pulse to reset device."
      },
      {
        "number": "37",
        "name": "CLK",
        "type": "bidirectional",
        "description": "External master clock input when CLKSEL=0 or internal clock output when CLKSEL=1 and CLK_EN=1; maximum 2.25MHz for external."
      },
      {
        "number": "38",
        "name": "START",
        "type": "input",
        "description": "Start conversion input; must be held high for at least 2 tCLK cycles to begin conversions."
      },
      {
        "number": "39",
        "name": "CS",
        "type": "input",
        "description": "SPI chip select active-low input; must remain low for entire duration of serial communication."
      },
      {
        "number": "40",
        "name": "SCLK",
        "type": "input",
        "description": "SPI serial clock input; maximum frequency 16MHz at DVDD=3.6V or 8MHz at DVDD=1.65V."
      },
      {
        "number": "41",
        "name": "DAISY_IN",
        "type": "input",
        "description": "Daisy-chain input; tie to DGND (logic zero) if daisy-chain mode not used."
      },
      {
        "number": "42",
        "name": "GPIO1",
        "type": "bidirectional",
        "description": "General-purpose input/output pin; individually configurable as input or output, can be used as PACEIN signal."
      },
      {
        "number": "43",
        "name": "DOUT",
        "type": "output",
        "description": "SPI serial data output; data shift out on rising edge of SCLK, goes to high-impedance when CS is high."
      },
      {
        "number": "44",
        "name": "GPIO2",
        "type": "bidirectional",
        "description": "General-purpose input/output pin; individually configurable as input or output, multiplexed with RESP_BLK signal."
      },
      {
        "number": "45",
        "name": "GPIO3",
        "type": "bidirectional",
        "description": "General-purpose input/output pin; individually configurable as input or output, multiplexed with RESP signal."
      },
      {
        "number": "46",
        "name": "GPIO4",
        "type": "bidirectional",
        "description": "General-purpose input/output pin; individually configurable as input or output, multiplexed with RESP_PH signal."
      },
      {
        "number": "47",
        "name": "DRDY",
        "type": "output",
        "description": "Data ready active-low output; transitions low when new conversion data are available."
      },
      {
        "number": "48",
        "name": "DVDD",
        "type": "power_in",
        "description": "Digital supply voltage, 1.65V to 3.6V."
      },
      {
        "number": "49",
        "name": "DGND",
        "type": "power_in",
        "description": "Digital ground, reference for digital supply."
      },
      {
        "number": "50",
        "name": "DVDD",
        "type": "power_in",
        "description": "Digital supply voltage, 1.65V to 3.6V."
      },
      {
        "number": "51",
        "name": "DGND",
        "type": "power_in",
        "description": "Digital ground, reference for digital supply."
      },
      {
        "number": "52",
        "name": "CLKSEL",
        "type": "input",
        "description": "Master clock select input; connect to DVDD for internal oscillator or DGND for external clock source."
      },
      {
        "number": "53",
        "name": "AVSS1",
        "type": "power_in",
        "description": "Analog ground for charge pump; star-connect to AVSS and AVDD for optimal performance."
      },
      {
        "number": "54",
        "name": "AVDD1",
        "type": "power_in",
        "description": "Analog supply for charge pump; star-connect to AVDD and AVSS for optimal performance."
      },
      {
        "number": "55",
        "name": "VCAP3",
        "type": "passive",
        "description": "Bypass capacitor for internally-generated AVDD+1.9V; connect to AVSS with 1µF capacitor placed as close to package as possible."
      },
      {
        "number": "56",
        "name": "AVDD",
        "type": "power_in",
        "description": "Analog supply voltage, 2.7V to 5.25V."
      },
      {
        "number": "57",
        "name": "AVSS",
        "type": "power_in",
        "description": "Analog ground, reference for analog supply."
      },
      {
        "number": "58",
        "name": "AVSS",
        "type": "power_in",
        "description": "Analog ground for charge pump; star-connect to AVSS1."
      },
      {
        "number": "59",
        "name": "AVDD",
        "type": "power_in",
        "description": "Analog supply for charge pump; star-connect to AVDD1."
      },
      {
        "number": "60",
        "name": "RLDREF",
        "type": "input",
        "description": "Right leg drive noninverting input; connect to (AVDD+AVSS)/2 externally or set RLDREF_INT for internal generation."
      },
      {
        "number": "61",
        "name": "RLDINV",
        "type": "bidirectional",
        "description": "Right leg drive inverting input; part of RLD amplifier feedback loop for common-mode rejection."
      },
      {
        "number": "62",
        "name": "RLDIN",
        "type": "input",
        "description": "Right leg drive input to multiplexer; can route RLD signal to electrode or short to AVDD if unused."
      },
      {
        "number": "63",
        "name": "RLDOUT",
        "type": "output",
        "description": "Right leg drive output; provides inverted common-mode feedback signal to electrodes for reducing interference."
      },
      {
        "number": "64",
        "name": "WCT",
        "type": "output",
        "description": "Wilson Center Terminal output; low-current (50µA max) buffered average of selected ECG leads."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.2",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.2",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-4-6",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: ADS1194 is a 4-channel variant; pins IN5-IN8 (channels 5-8) are present on package but not used by t"
        ],
        "pages_sent": 81,
        "cost_usd": 1.0573,
        "at": "2026-09-17T22:13:57"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/ads1194",
        "pages": 81,
        "sha256": "3923a51be1b79af3",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 64,
        "described": 64,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
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        "extents_mm": [
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        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "60567e81b0770b6c519104183a7a05ba52dddc11146b5fbe21434fbb5801696c",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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      {
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        "sha256": "449a37b5ee46351f4d4d9d9e7e830f4021a508b2d91aa54c2ccd2dd1869d6d2c",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "TQFP-64(10x10)",
      "Category": "Data Acquisition",
      "Pins": "64"
    }
  },
  "variants": [],
  "sections": [
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  "discovery_triggers": [
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  "discovery_pitch": "ADS1194CPAGR (Texas Instruments) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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  "updated_at": "2026-09-24T15:56:49.216Z"
}