ADS7843E

{
  "schema_version": 1,
  "type": "component",
  "slug": "ads7843e",
  "title": "ADS7843E",
  "brief": "Texas Instruments Touch Screen Controllers, SSOP-16-150mil. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "data acquisition",
    "ads7843e"
  ],
  "component": {
    "mpn": "ADS7843E",
    "manufacturer": "Texas Instruments",
    "package": "SSOP-16-150mil",
    "pin_count": 16,
    "category": "Data Acquisition",
    "subcategory": "Touch Screen Controllers",
    "datasheet": "https://www.ti.com/cn/lit/gpn/ads7843",
    "parts": {
      "symbol": "ads7843e.kicad_sym",
      "footprint": "ads7843e.kicad_mod",
      "model_3d": "ads7843e-etched.glb",
      "model_3d_plain": "ads7843e.glb",
      "model_3d_step": "ads7843e-etched.step",
      "model_3d_step_plain": "ads7843e.step",
      "lbr": "ads7843e.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "+VCC",
        "type": "power_in",
        "description": "Power Supply, 2.7V to 5V. Tied together with pin 10 (+VCC)."
      },
      {
        "number": "2",
        "name": "X+",
        "type": "input",
        "description": "X+ Position Input. ADC input Channel 1. Connects to the X+ electrode of the resistive touch panel; also drivable by internal switch (~5Ω on-resistance) to +VCC."
      },
      {
        "number": "3",
        "name": "Y+",
        "type": "input",
        "description": "Y+ Position Input. ADC input Channel 2. Connects to the Y+ electrode of the resistive touch panel; also drivable by internal switch (~5Ω on-resistance) to +VCC."
      },
      {
        "number": "4",
        "name": "X-",
        "type": "input",
        "description": "X- Position Input. Connects to the X- electrode of the resistive touch panel; also drivable by internal switch (~6Ω on-resistance) to GND."
      },
      {
        "number": "5",
        "name": "Y-",
        "type": "input",
        "description": "Y- Position Input. Connects to the Y- electrode of the resistive touch panel; also drivable by internal switch (~6Ω on-resistance) to GND."
      },
      {
        "number": "6",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for both analog and digital sections."
      },
      {
        "number": "7",
        "name": "IN3",
        "type": "input",
        "description": "Auxiliary Input 1. ADC input Channel 3. General-purpose single-ended analog input, 0V to VREF range."
      },
      {
        "number": "8",
        "name": "IN4",
        "type": "input",
        "description": "Auxiliary Input 2. ADC input Channel 4. General-purpose single-ended analog input, 0V to VREF range."
      },
      {
        "number": "9",
        "name": "VREF",
        "type": "input",
        "description": "Voltage Reference Input. Sets the ADC full-scale range; may be varied between 1V and +VCC (typical 2.5V)."
      },
      {
        "number": "10",
        "name": "+VCC",
        "type": "power_in",
        "description": "Power Supply, 2.7V to 5V. Tied together with pin 1 (+VCC)."
      },
      {
        "number": "11",
        "name": "PENIRQ",
        "type": "output",
        "description": "Pen Interrupt. Open-anode (open-drain) output that asserts low when the pen touches the panel; requires a 10kΩ to 100kΩ external pull-up resistor."
      },
      {
        "number": "12",
        "name": "DOUT",
        "type": "tri_state",
        "description": "Serial Data Output (MISO). Data is shifted out on the falling edge of DCLK. Output is high-impedance when CS is HIGH."
      },
      {
        "number": "13",
        "name": "BUSY",
        "type": "tri_state",
        "description": "Busy Output. Indicates a conversion is in progress. Output is high-impedance when CS is HIGH."
      },
      {
        "number": "14",
        "name": "DIN",
        "type": "input",
        "description": "Serial Data Input (MOSI). If CS is LOW, data is latched on the rising edge of DCLK."
      },
      {
        "number": "15",
        "name": "CS",
        "type": "input",
        "description": "Chip Select Input (active low). Controls conversion timing and enables the serial input/output register."
      },
      {
        "number": "16",
        "name": "DCLK",
        "type": "input",
        "description": "External Clock Input (SCLK). This clock runs the SAR conversion process and synchronizes serial data I/O."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/ads7843",
        "pages": 20,
        "sha256": "ea67b3946b732aa0",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "file": "ads7843e.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.8,
          6.2,
          2.1
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d0e11e46aeca5dbaa5c4bb538f3f4899761267cabdeba6486325ae9e979c03ef",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ads7843e-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0.0,
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        "sha256": "bd543809d7b1f9a34fe9e18081b95b571b1e00a2d8b5af2151b471862aa34d3e",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SSOP-16-150mil",
      "Category": "Data Acquisition",
      "Pins": "16"
    }
  },
  "variants": [
    {
      "mpn": "ADS7843E",
      "kind": "packaging"
    },
    {
      "mpn": "ADS7843E/2K5",
      "kind": "packaging"
    }
  ],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ads7843e"
  ],
  "discovery_pitch": "ADS7843E (Texas Instruments) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
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    "ads7843e.kicad_mod",
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    "ads7843e.lbr",
    "docs/hero.png",
    "docs/ads7843e-datasheet.pdf",
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  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T16:01:19.366Z"
}