TM7780

{
  "schema_version": 1,
  "type": "component",
  "slug": "tm7780",
  "title": "TM7780",
  "brief": "TM Shenzhen Titan Micro Elec Energy Metering, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "data acquisition",
    "tm7780"
  ],
  "component": {
    "mpn": "TM7780",
    "manufacturer": "TM Shenzhen Titan Micro Elec",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Data Acquisition",
    "subcategory": "Energy Metering",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589835776403148800",
    "parts": {
      "symbol": "tm7780.kicad_sym",
      "footprint": "tm7780.kicad_mod",
      "model_3d": "tm7780-etched.glb",
      "model_3d_plain": "tm7780.glb",
      "model_3d_step": "tm7780-etched.step",
      "model_3d_step_plain": "tm7780.step",
      "lbr": "tm7780.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply. Recommended 4.5-5.5 V (typ 5.0 V). Brown-out reset asserts below ~4.0 V (release ~4.3 V). Decouple with 0.1 µF + 10 µF to GND."
      },
      {
        "number": "2",
        "name": "VAP",
        "type": "input",
        "description": "Current-channel differential positive input. Full-scale differential range ±43.75 mV peak between VAP/VAN. Equivalent input impedance ≈500 kΩ; input cap ≈6.4 pF. Absolute limits -2 V to +2 V."
      },
      {
        "number": "3",
        "name": "VAN",
        "type": "input",
        "description": "Current-channel differential negative input. Paired with VAP; ±43.75 mV peak differential full-scale. Absolute limits -2 V to +2 V."
      },
      {
        "number": "4",
        "name": "VBP",
        "type": "input",
        "description": "Voltage-channel single-ended positive input. Full-scale input range ±700 mV peak. Equivalent input impedance ≈6 MΩ. Typically driven from mains via resistor divider (e.g. 6×470 kΩ + 1 kΩ) with 0.1 µF to GND."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Negative supply / system ground reference for all analog and digital signals."
      },
      {
        "number": "6",
        "name": "CF",
        "type": "output",
        "description": "Active-power pulse output. Frequency proportional to real power: F_CF = (V1·V2·48 / V_REF²)·(f_CLK/128). 50% duty cycle. VOH ≥ VDD−0.5 V at Iout=5 mA; VOL ≤ 0.5 V at Iout=−5 mA. ±0.2% accuracy (IEC 687/1036)."
      },
      {
        "number": "7",
        "name": "CFA",
        "type": "output",
        "description": "RMS output pulse - selectable via SET: SET=GND outputs RMS current (F_CFAI = (V1·24/V_REF)·(f_CLK/512)); SET=VDD outputs RMS voltage (F_CFAU = (V2·2/V_REF)·(f_CLK/512)). ±0.5% accuracy, 50% duty cycle."
      },
      {
        "number": "8",
        "name": "SET",
        "type": "input",
        "description": "Mode-select input with internal pull-down. Selects CFA output content: tie to GND (or leave floating - internal pull-down) for RMS current on CFA; tie to VDD for RMS voltage on CFA. VIH ≥ 0.8·VDD, VIL ≤ 0.8 V."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589835776403148800",
        "pages": 5,
        "sha256": "9ab222968c46653d",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "tm7780.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tm7780-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "777d29aa44fc4a66582204a4a94832f2cec46f54552b98688d10529aefd804df",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "TM Shenzhen Titan Micro Elec",
      "Package": "SOP-8",
      "Category": "Data Acquisition",
      "Pins": "8"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "tm7780"
  ],
  "discovery_pitch": "TM7780 (TM Shenzhen Titan Micro Elec) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tm7780.kicad_sym",
    "tm7780.kicad_mod",
    "tm7780.glb",
    "tm7780.step",
    "tm7780.lbr",
    "docs/hero.png",
    "docs/tm7780-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-25T10:58:33.976Z"
}