PGA870IRHDR

{
  "schema_version": 1,
  "type": "component",
  "slug": "pga870irhdr",
  "title": "PGA870IRHDR",
  "brief": "Texas Instruments Differential Amplifiers, VQFN-28-EP(5x5). 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",
    "amplifiers-comparators",
    "pga870irhdr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "PGA870IRHDR",
    "manufacturer": "Texas Instruments",
    "package": "VQFN-28-EP(5x5)",
    "pin_count": 29,
    "category": "Amplifiers/Comparators",
    "subcategory": "Differential Amplifiers",
    "datasheet": "https://www.ti.com/cn/lit/gpn/pga870",
    "parts": {
      "symbol": "pga870irhdr.kicad_sym",
      "footprint": "pga870irhdr.kicad_mod",
      "model_3d": "pga870irhdr-hero.glb",
      "model_3d_plain": "pga870irhdr.glb",
      "model_3d_step": "pga870irhdr-etched.step",
      "model_3d_step_plain": "pga870irhdr.step",
      "lbr": "pga870irhdr.lbr"
    },
    "distributor_links": {
      "lcsc": "C702000",
      "digikey": "296-38782-2-ND",
      "mouser": "595-PGA870IRHDR"
    },
    "distributor_check": {
      "checked_at": "2026-10-07T21:44:10Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-38782-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-PGA870IRHDR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "LATCH MODE",
        "type": "input",
        "description": "Controls latched and unlatched acquisition of the gain control word (B0 to B5); digital thresholds are 0.9 V low and 2.1 V high."
      },
      {
        "number": "2",
        "name": "VS+",
        "type": "power_in",
        "description": "+5 V power supply; specified operating voltage 4.75 V to 5.25 V."
      },
      {
        "number": "3",
        "name": "IN+",
        "type": "input",
        "description": "Noninverting input; differential input resistance 150 Ω typical."
      },
      {
        "number": "4",
        "name": "VMID2",
        "type": "passive",
        "description": "Buffer output for the internal midsupply reference, not intended to drive an external load, and should be bypassed by a 0.1-μF capacitor."
      },
      {
        "number": "5",
        "name": "IN–",
        "type": "input",
        "description": "Inverting input; differential input resistance 150 Ω typical."
      },
      {
        "number": "6",
        "name": "VS+",
        "type": "power_in",
        "description": "+5 V power supply; specified operating voltage 4.75 V to 5.25 V."
      },
      {
        "number": "7",
        "name": "GAIN STROBE",
        "type": "input",
        "description": "Gain latch clock pin; data set-up time to GAIN STROBE low is 2.5 ns typical and hold time is 0 ns."
      },
      {
        "number": "8",
        "name": "B5 (MSB)",
        "type": "input",
        "description": "Gain control MSB of the 6-bit gain word."
      },
      {
        "number": "9",
        "name": "B4",
        "type": "input",
        "description": "Gain control bit 4."
      },
      {
        "number": "10",
        "name": "B3",
        "type": "input",
        "description": "Gain control bit 3."
      },
      {
        "number": "11",
        "name": "VS+",
        "type": "power_in",
        "description": "+5 V power supply; specified operating voltage 4.75 V to 5.25 V."
      },
      {
        "number": "12",
        "name": "B2",
        "type": "input",
        "description": "Gain control bit 2."
      },
      {
        "number": "13",
        "name": "B1",
        "type": "input",
        "description": "Gain control bit 1."
      },
      {
        "number": "14",
        "name": "B0 (LSB)",
        "type": "input",
        "description": "Gain control bit 0 (LSB)."
      },
      {
        "number": "15",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "16",
        "name": "VS+",
        "type": "power_in",
        "description": "+5 V power supply; specified operating voltage 4.75 V to 5.25 V."
      },
      {
        "number": "17",
        "name": "OUT–",
        "type": "output",
        "description": "Inverting output."
      },
      {
        "number": "18",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "19",
        "name": "OUT+",
        "type": "output",
        "description": "Noninverting output."
      },
      {
        "number": "20",
        "name": "VS+",
        "type": "power_in",
        "description": "+5 V power supply; specified operating voltage 4.75 V to 5.25 V."
      },
      {
        "number": "21",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "22",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "23",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "24",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "25",
        "name": "VS+",
        "type": "power_in",
        "description": "+5 V power supply; specified operating voltage 4.75 V to 5.25 V."
      },
      {
        "number": "26",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "27",
        "name": "PD",
        "type": "input",
        "description": "Active-low power-down for the analog circuitry (on above 2.1 V, off below 0.9 V); gain control CMOS circuitry stays active when PD is low."
      },
      {
        "number": "28",
        "name": "VMID1",
        "type": "passive",
        "description": "Chip bypass pin for the internal midsupply reference, not intended as an input, and should be bypassed with a 0.1-μF capacitor."
      },
      {
        "number": "29",
        "name": "PowerPAD",
        "type": "power_in",
        "description": "Thermal contact for heat dissipation; the thermal pad must be connected to electrical ground."
      }
    ],
    "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: Package hint says VQFN-28-EP(5x5). The excerpt names the package QFN-28 RHD (PowerPAD) and the packa; The thermal pad is not given a printed pin number in the datasheet text, so it is listed as 'EP' as ; Pin types for VMID1 and VMID2 are set to passive because the datasheet describes them as a reference",
          "exposed pad 29 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
        ],
        "pages_sent": 9,
        "cost_usd": 0.0719,
        "at": "2026-10-07T21:43:52"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/pga870",
        "pages": 39,
        "sha256": "12ba1f4c47abcbd2",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 29,
        "described": 29,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "pga870irhdr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5,
          5,
          0.92
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "e9d6d740f505b03e5aa0ac826330f9e269344b84656d051f50eb07ac162749eb",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "pga870irhdr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5,
          5,
          0.92
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "26612aab613f92ef4b0bc495a24da0840a77e58dcfe3389fb4e8d4f087c51a36",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "VQFN-28-EP(5x5)",
      "Category": "Amplifiers/Comparators",
      "Pins": "29"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "pga870irhdr"
  ],
  "discovery_pitch": "PGA870IRHDR (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "pga870irhdr.kicad_sym",
    "pga870irhdr.kicad_mod",
    "pga870irhdr.glb",
    "pga870irhdr.step",
    "pga870irhdr.lbr",
    "docs/hero.png",
    "docs/pga870irhdr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "pga870irhdr-hero.glb",
    "pga870irhdr-hero.overlay.json"
  ],
  "visibility": {
    "public": true
  }
}