ADS1147IPWR

{
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  "type": "component",
  "slug": "ads1147ipwr",
  "title": "ADS1147IPWR",
  "brief": "Texas Instruments Analog To Digital Converters (ADC), TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
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    "data acquisition",
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  "component": {
    "mpn": "ADS1147IPWR",
    "manufacturer": "Texas Instruments",
    "package": "TSSOP-20",
    "pin_count": 20,
    "category": "Data Acquisition",
    "subcategory": "Analog To Digital Converters (ADC)",
    "datasheet": "https://www.ti.com/cn/lit/gpn/ads1148",
    "parts": {
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      "lbr": "ads1147ipwr.lbr"
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    "distributor_links": {
      "lcsc": "C913842"
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    "pins": [
      {
        "number": "1",
        "name": "DVDD",
        "type": "power_in",
        "description": "Digital power supply input 2.7 to 5.25 V with 0.1 µF bypass capacitor connected to DGND for decoupling."
      },
      {
        "number": "2",
        "name": "DGND",
        "type": "power_in",
        "description": "Digital ground reference."
      },
      {
        "number": "3",
        "name": "CLK",
        "type": "input",
        "description": "External clock input accepting 1 to 4.5 MHz frequency with 25% to 75% duty cycle, or tie to DGND to enable internal oscillator."
      },
      {
        "number": "4",
        "name": "RESET",
        "type": "input",
        "description": "Active-low reset input with minimum pulse width 4 tCLK that restores all registers to default values."
      },
      {
        "number": "5",
        "name": "REFP0/GPIO0",
        "type": "bidirectional",
        "description": "Positive external reference input 0 accepting 0.5 to AVDD-AVSS-1 V, or general-purpose digital input/output pin 0."
      },
      {
        "number": "6",
        "name": "REFN0/GPIO1",
        "type": "bidirectional",
        "description": "Negative external reference input 0, or general-purpose digital input/output pin 1."
      },
      {
        "number": "7",
        "name": "VREFOUT",
        "type": "output",
        "description": "Positive internal reference voltage output at 2.048 V nominal with ±10 mA output current capability and 1 to 47 µF load capacitor to VREFCOM."
      },
      {
        "number": "8",
        "name": "VREFCOM",
        "type": "output",
        "description": "Negative internal reference voltage output connected to AVSS for unipolar or mid-voltage ground when using bipolar supply."
      },
      {
        "number": "9",
        "name": "AIN0/IEXC",
        "type": "input",
        "description": "Analog input 0 from AVSS-100 mV to AVDD+100 mV with optional excitation current output capability when IDAC is routed to this channel."
      },
      {
        "number": "10",
        "name": "AIN1/IEXC",
        "type": "input",
        "description": "Analog input 1 from AVSS-100 mV to AVDD+100 mV with optional excitation current output capability."
      },
      {
        "number": "11",
        "name": "AIN2/IEXC/GPIO2",
        "type": "bidirectional",
        "description": "Analog input 2 from AVSS-100 mV to AVDD+100 mV with optional excitation current output, or general-purpose digital input/output pin 2."
      },
      {
        "number": "12",
        "name": "AIN3/IEXC/GPIO3",
        "type": "bidirectional",
        "description": "Analog input 3 from AVSS-100 mV to AVDD+100 mV with optional excitation current output, or general-purpose digital input/output pin 3."
      },
      {
        "number": "13",
        "name": "AVSS",
        "type": "power_in",
        "description": "Negative analog power supply from -2.65 to 0.1 V relative to DGND for proper analog circuit biasing and operation."
      },
      {
        "number": "14",
        "name": "AVDD",
        "type": "power_in",
        "description": "Positive analog power supply 2.7 to 5.25 V with 0.1 µF bypass capacitor connected to AVSS for power supply noise reduction."
      },
      {
        "number": "15",
        "name": "START",
        "type": "input",
        "description": "Active-high conversion start input with minimum pulse width 3 tCLK to initiate ADC conversion or hold high for continuous conversion."
      },
      {
        "number": "16",
        "name": "CS",
        "type": "input",
        "description": "Active-low chip select for SPI communication with minimum high pulse duration 5 tCLK that resets serial interface when taken high."
      },
      {
        "number": "17",
        "name": "DRDY",
        "type": "output",
        "description": "Data ready output active-low indicating new ADC conversion result is available in the output register."
      },
      {
        "number": "18",
        "name": "DOUT/DRDY",
        "type": "output",
        "description": "Serial data output that functions as DOUT only when DRDY MODE bit is 0, or as combined DOUT/DRDY when DRDY MODE bit is 1."
      },
      {
        "number": "19",
        "name": "DIN",
        "type": "input",
        "description": "Serial data input for SPI commands shifted on SCLK falling edge with setup time 5 ns before and hold time 5 ns after falling edge."
      },
      {
        "number": "20",
        "name": "SCLK",
        "type": "input",
        "description": "Serial clock input for SPI interface with minimum period 488 ns and duty cycle 25% to 75% for reliable communication."
      }
    ],
    "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-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 100,
        "cost_usd": 0.9768,
        "at": "2026-09-24T10:52:43"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/ads1148",
        "pages": 100,
        "sha256": "45e0fc75c85fcf9e",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 20,
        "described": 20,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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        "seat": "z = 0",
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "97339947f3a7196470ec2f1d9f9b92bb2fc2ab66ad53be0cf105192585ef3c9a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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        "checked": "2026-10-07",
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      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "TSSOP-20",
      "Category": "Data Acquisition",
      "Pins": "20"
    }
  },
  "variants": [],
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  "discovery_pitch": "ADS1147IPWR (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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