AFE4400RHAT

{
  "slug": "afe4400rhat",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Analog Front End (AFE), VQFN-40-EP(6x6). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "data acquisition",
    "afe4400rhat",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "afe4400rhat.kicad_sym",
    "afe4400rhat.kicad_mod",
    "afe4400rhat.glb",
    "afe4400rhat.step",
    "afe4400rhat.lbr",
    "docs/hero.png",
    "docs/afe4400rhat-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "afe4400rhat-hero.glb",
    "afe4400rhat-hero.overlay.json"
  ],
  "component": {
    "mpn": "AFE4400RHAT",
    "manufacturer": "Texas Instruments",
    "package": "VQFN-40-EP(6x6)",
    "pin_count": 41,
    "category": "Data Acquisition",
    "subcategory": "Analog Front End (AFE)",
    "datasheet": "https://www.ti.com/cn/lit/gpn/afe4400",
    "parts": {
      "symbol": "afe4400rhat.kicad_sym",
      "footprint": "afe4400rhat.kicad_mod",
      "model_3d": "afe4400rhat-hero.glb",
      "model_3d_plain": "afe4400rhat.glb",
      "model_3d_step": "afe4400rhat-etched.step",
      "model_3d_step_plain": "afe4400rhat.step",
      "lbr": "afe4400rhat.lbr"
    },
    "distributor_links": {
      "lcsc": "C2651560",
      "digikey": "296-36191-2-ND",
      "mouser": "595-AFE4400RHAT"
    },
    "distributor_check": {
      "checked_at": "2026-10-11T07:27:52Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-36191-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-AFE4400RHAT",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "INN",
        "type": "input",
        "description": "Receiver input pin; connect to the photodiode anode."
      },
      {
        "number": "2",
        "name": "INP",
        "type": "input",
        "description": "Receiver input pin; connect to the photodiode cathode."
      },
      {
        "number": "3",
        "name": "RX_ANA_GND",
        "type": "power_in",
        "description": "Rx analog ground pin; connect to common board ground."
      },
      {
        "number": "4",
        "name": "VCM",
        "type": "passive",
        "description": "Input common-mode voltage output; connect a series 1 kΩ resistor and a 10 nF decoupling capacitor to ground."
      },
      {
        "number": "5",
        "name": "DNC",
        "type": "unconnected",
        "description": "Do not connect; leave as open circuit."
      },
      {
        "number": "6",
        "name": "DNC",
        "type": "unconnected",
        "description": "Do not connect; leave as open circuit."
      },
      {
        "number": "7",
        "name": "BG",
        "type": "passive",
        "description": "Decoupling capacitor for the internal band-gap voltage; connect a 2.2-µF capacitor to ground."
      },
      {
        "number": "8",
        "name": "VSS",
        "type": "power_in",
        "description": "Substrate ground; connect to common board ground."
      },
      {
        "number": "9",
        "name": "TX_REF",
        "type": "passive",
        "description": "Transmitter reference voltage, 0.75 V default after reset; connect a 2.2-µF decoupling capacitor to ground."
      },
      {
        "number": "10",
        "name": "DNC",
        "type": "unconnected",
        "description": "Do not connect; leave as open circuit."
      },
      {
        "number": "11",
        "name": "TX_CTRL_SUP",
        "type": "power_in",
        "description": "Transmit control supply pin with a 0.1-µF decoupling capacitor to ground; Tx supply range is 3.0 V to 5.25 V."
      },
      {
        "number": "12",
        "name": "LED_DRV_GND",
        "type": "power_in",
        "description": "LED driver ground pin for the H-bridge; connect to common board ground."
      },
      {
        "number": "13",
        "name": "LED_DRV_GND",
        "type": "power_in",
        "description": "LED driver ground pin for the H-bridge; connect to common board ground."
      },
      {
        "number": "14",
        "name": "TXN",
        "type": "output",
        "description": "LED driver output B of the H-bridge; connect to the LED."
      },
      {
        "number": "15",
        "name": "TXP",
        "type": "output",
        "description": "LED driver output B of the H-bridge; connect to the LED."
      },
      {
        "number": "16",
        "name": "LED_DRV_GND",
        "type": "power_in",
        "description": "LED driver ground pin for the H-bridge; connect to common board ground."
      },
      {
        "number": "17",
        "name": "LED_DRV_SUP",
        "type": "power_in",
        "description": "LED driver supply pin for the H-bridge; connect to an external supply capable of sourcing the large LED current drawn by this pin (Tx supply range 3.0 V to 5.25 V)."
      },
      {
        "number": "18",
        "name": "LED_DRV_SUP",
        "type": "power_in",
        "description": "LED driver supply pin for the H-bridge; connect to an external supply capable of sourcing the large LED current drawn by this pin (Tx supply range 3.0 V to 5.25 V)."
      },
      {
        "number": "19",
        "name": "RX_DIG_GND",
        "type": "power_in",
        "description": "Rx digital ground pin; connect to common board ground."
      },
      {
        "number": "20",
        "name": "AFE_PDN",
        "type": "input",
        "description": "AFE-only power-down input, active low; can be connected to an MCU port pin."
      },
      {
        "number": "21",
        "name": "DIAG_END",
        "type": "output",
        "description": "Output signal indicating completion of diagnostics; can be connected to an MCU port pin."
      },
      {
        "number": "22",
        "name": "LED_ALM",
        "type": "output",
        "description": "Output signal indicating an LED cable fault; can be connected to an MCU port pin."
      },
      {
        "number": "23",
        "name": "PD_ALM",
        "type": "output",
        "description": "Output signal indicating a PD sensor or cable fault; can be connected to an MCU port pin."
      },
      {
        "number": "24",
        "name": "SCLK",
        "type": "input",
        "description": "SPI clock pin."
      },
      {
        "number": "25",
        "name": "SPISOMI",
        "type": "output",
        "description": "SPI serial out, master in."
      },
      {
        "number": "26",
        "name": "SPISIMO",
        "type": "input",
        "description": "SPI serial in, master out."
      },
      {
        "number": "27",
        "name": "SPISTE",
        "type": "input",
        "description": "SPI serial interface enable."
      },
      {
        "number": "28",
        "name": "ADC_RDY",
        "type": "output",
        "description": "Output signal indicating ADC conversion completion; can be connected to an external MCU interrupt input."
      },
      {
        "number": "29",
        "name": "RESET",
        "type": "input",
        "description": "AFE-only reset input, active low; can be connected to an MCU port pin."
      },
      {
        "number": "30",
        "name": "CLKOUT",
        "type": "output",
        "description": "Buffered 4-MHz clock output; can be connected to the clock input of an external MCU."
      },
      {
        "number": "31",
        "name": "RX_DIG_SUP",
        "type": "power_in",
        "description": "Rx digital supply pin (Rx supply range 2.0 V to 3.6 V) with a 0.1-µF decoupling capacitor to ground."
      },
      {
        "number": "32",
        "name": "RX_DIG_GND",
        "type": "power_in",
        "description": "Rx digital ground pin; connect to common board ground."
      },
      {
        "number": "33",
        "name": "RX_ANA_SUP",
        "type": "power_in",
        "description": "Rx analog supply pin (Rx supply range 2.0 V to 3.6 V) with a 0.1-µF decoupling capacitor to ground."
      },
      {
        "number": "34",
        "name": "DNC",
        "type": "unconnected",
        "description": "Do not connect; leave as open circuit."
      },
      {
        "number": "35",
        "name": "DNC",
        "type": "unconnected",
        "description": "Do not connect; leave as open circuit."
      },
      {
        "number": "36",
        "name": "RX_ANA_GND",
        "type": "power_in",
        "description": "Rx analog ground pin; connect to common board ground."
      },
      {
        "number": "37",
        "name": "XOUT",
        "type": "passive",
        "description": "Crystal oscillator pin; connect an external 8-MHz crystal between XIN and XOUT with the vendor-specified load capacitors to ground."
      },
      {
        "number": "38",
        "name": "XIN",
        "type": "passive",
        "description": "Crystal oscillator pin; connect an external 8-MHz crystal between XIN and XOUT with the vendor-specified load capacitors to ground."
      },
      {
        "number": "39",
        "name": "RX_ANA_SUP",
        "type": "power_in",
        "description": "Rx analog supply pin (Rx supply range 2.0 V to 3.6 V) with a 0.1-µF decoupling capacitor to ground."
      },
      {
        "number": "40",
        "name": "RX_ANA_GND",
        "type": "power_in",
        "description": "Rx analog ground pin; connect to common board ground."
      },
      {
        "number": "41",
        "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-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 pages provided do not show an exposed thermal pad pin number for the VQFN-40-EP hint. ; Pin-number mapping was taken from the Pin Functions table (page 6). The flattened pin figure on page; KiCad ERC has no analog class. INN and INP were mapped to input, and TXN and TXP to output, based on",
          "exposed pad 41 added from the footprint"
        ],
        "pages_sent": 13,
        "cost_usd": 0.0979,
        "at": "2026-10-11T07:27:36"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/afe4400",
        "pages": 87,
        "sha256": "32fd40f29bb554b6",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 41,
        "described": 41,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "afe4400rhat.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          6.0,
          1.0
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "e5b4286c2329085d9ef7f90d5eb5bf41a435241ecc1baaf1383823b6d6a946ae",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "afe4400rhat-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          6.0,
          1.0
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "daab426eea4bb2c3e33eaf25430e1fc7b3ad688970d8ced3a568256adf13ef1d",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}