ADS8507IDW

{
  "slug": "ads8507idw",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Analog To Digital Converters (ADC), SOIC-28-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
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    "data acquisition",
    "ads8507idw",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "ADS8507IDW",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-28-300mil",
    "pin_count": 28,
    "category": "Data Acquisition",
    "subcategory": "Analog To Digital Converters (ADC)",
    "datasheet": "https://www.ti.com/cn/lit/gpn/ads8507",
    "parts": {
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      "lbr": "ads8507idw.lbr"
    },
    "distributor_links": {
      "lcsc": "C701098",
      "digikey": "2156-ADS8507IDW-ND",
      "mouser": "595-ADS8507IDW"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T19:55:48Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "2156-ADS8507IDW-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-ADS8507IDW",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "R1IN",
        "type": "passive",
        "description": "Analog input; absolute maximum ±25 V, and its connection depends on the selected input range per Table 1 (±10 V: VIN to R1IN via 200 Ω to CAP for 0-5 V and 0-4 V ranges as listed)."
      },
      {
        "number": "2",
        "name": "AGND1",
        "type": "power_in",
        "description": "Analog sense ground used internally as the ground reference point, with minimal current flow through it."
      },
      {
        "number": "3",
        "name": "R2IN",
        "type": "passive",
        "description": "Analog input; absolute maximum ±25 V, and its connection depends on the selected input range per Table 1."
      },
      {
        "number": "4",
        "name": "CAP",
        "type": "passive",
        "description": "Reference buffer output that requires a 2.2-µF tantalum capacitor to ground."
      },
      {
        "number": "5",
        "name": "REF",
        "type": "passive",
        "description": "Reference input/output that outputs the internal 2.5-V reference or accepts an external system reference, bypassed to ground with a 2.2-µF tantalum capacitor."
      },
      {
        "number": "6",
        "name": "AGND2",
        "type": "power_in",
        "description": "Analog ground."
      },
      {
        "number": "7",
        "name": "SB/BTC",
        "type": "input",
        "description": "Selects output data format: high gives straight binary output, low gives binary 2's complement output."
      },
      {
        "number": "8",
        "name": "EXT/INT",
        "type": "input",
        "description": "Selects external or internal data clock: high synchronizes output data to the DATACLK input; low makes a convert command start transmission of the previous conversion's data with 16 clock pulses on DATACLK."
      },
      {
        "number": "9",
        "name": "D7",
        "type": "output",
        "description": "Parallel data bit 7 when BYTE is high, or bit 15 (MSB) when BYTE is low; high-impedance when CS is high and/or R/C is low, and left unconnected when using serial output."
      },
      {
        "number": "10",
        "name": "D6",
        "type": "output",
        "description": "Parallel data bit 6 when BYTE is high, or bit 14 when BYTE is low; high-impedance when CS is high and/or R/C is low."
      },
      {
        "number": "11",
        "name": "D5",
        "type": "output",
        "description": "Parallel data bit 5 when BYTE is high, or bit 13 when BYTE is low; high-impedance when CS is high and/or R/C is low."
      },
      {
        "number": "12",
        "name": "D4",
        "type": "output",
        "description": "Parallel data bit 4 when BYTE is high, or bit 12 when BYTE is low; high-impedance when CS is high and/or R/C is low."
      },
      {
        "number": "13",
        "name": "D3",
        "type": "output",
        "description": "Parallel data bit 3 when BYTE is high, or bit 11 when BYTE is low; high-impedance when CS is high and/or R/C is low."
      },
      {
        "number": "14",
        "name": "DGND",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "15",
        "name": "D2",
        "type": "output",
        "description": "Parallel data bit 2 when BYTE is high, or bit 10 when BYTE is low; high-impedance when CS is high and/or R/C is low."
      },
      {
        "number": "16",
        "name": "D1",
        "type": "output",
        "description": "Parallel data bit 1 when BYTE is high, or bit 9 when BYTE is low; high-impedance when CS is high and/or R/C is low."
      },
      {
        "number": "17",
        "name": "D0",
        "type": "output",
        "description": "Parallel data bit 0 (LSB) when BYTE is high, or bit 8 when BYTE is low; high-impedance when CS is high and/or R/C is low."
      },
      {
        "number": "18",
        "name": "DATACLK",
        "type": "bidirectional",
        "description": "Input or output depending on EXT/INT; output data is synchronized to it, and in internal clock mode it transmits 16 pulses after each conversion and stays low between conversions."
      },
      {
        "number": "19",
        "name": "SDATA",
        "type": "output",
        "description": "Serial data output synchronized to DATACLK, with format set by SB/BTC; after 16 bits in external clock mode it outputs the TAG level while CS is low and R/C is high."
      },
      {
        "number": "20",
        "name": "TAG",
        "type": "input",
        "description": "Tag input for external clock mode; when EXT/INT is high, its digital data is output on SDATA with a delay dependent on the external clock mode."
      },
      {
        "number": "21",
        "name": "BYTE",
        "type": "input",
        "description": "Selects the 8 most significant bits (low) or the 8 least significant bits (high) on the parallel output pins."
      },
      {
        "number": "22",
        "name": "R/C",
        "type": "input",
        "description": "Read/convert input; with CS low, a falling edge puts the sample-and-hold into hold and starts a conversion, and in internal clock mode it also initiates transmission of the previous result."
      },
      {
        "number": "23",
        "name": "CS",
        "type": "input",
        "description": "Chip select, internally ORed with R/C; with R/C low, a falling edge starts a new conversion, and in internal clock mode it starts serial transmission of the previous result."
      },
      {
        "number": "24",
        "name": "BUSY",
        "type": "output",
        "description": "Goes low at the start of a conversion and stays low until the conversion is complete and the digital outputs are updated."
      },
      {
        "number": "25",
        "name": "PWRD",
        "type": "input",
        "description": "Power-down input; when high, conversions are inhibited and power consumption is significantly reduced while the previous result is held in the output shift register (power-down mode is 50 µW max per the specification)."
      },
      {
        "number": "26",
        "name": "REFD",
        "type": "input",
        "description": "Reference disable input; when high it shuts down the internal reference, so an external reference is required for conversions (REFD high power is 20 mW per the specification)."
      },
      {
        "number": "27",
        "name": "VANA",
        "type": "power_in",
        "description": "Analog supply, nominally +5 V (4.75 V to 5.25 V per the specification), to be decoupled with 0.1-µF ceramic and 10-µF tantalum capacitors; absolute maximum 6 V."
      },
      {
        "number": "28",
        "name": "VDIG",
        "type": "power_in",
        "description": "Digital supply, nominally +5 V; connect directly to pin 27 and it must be less than or equal to VANA."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "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": [
          "extractor flagged: The datasheet pin description for AGND1 is cut off after 'Minimal current flow', so the sentence her; The datasheet gives no per-pin limits for R1IN or R2IN beyond the ±25 V absolute maximum on the anal; Package is SO-28 (DW), which matches the ADS8507IDW ordering entry; the pin numbers 1–28 in the term"
        ],
        "pages_sent": 9,
        "cost_usd": 0.0761,
        "at": "2026-10-08T19:55:13"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/ads8507",
        "pages": 37,
        "sha256": "b4887a0099e083eb",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 28,
        "described": 28,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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}