MCP3208

{
  "schema_version": 1,
  "type": "component",
  "slug": "mcp3208",
  "title": "MCP3208",
  "brief": "Microchip 8-channel 12-bit SPI ADC, SOIC-16. 100 ksps, single-ended or differential. Higher-res MCP3008. Datasheet-verified.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "data-converter",
    "adc",
    "spi",
    "12-bit",
    "soic-16",
    "microchip"
  ],
  "component": {
    "mpn": "MCP3208",
    "manufacturer": "Microchip Technology",
    "package": "SOIC-16",
    "pin_count": 16,
    "category": "Data Converter",
    "subcategory": "8-channel 12-bit SPI ADC",
    "datasheet": "https://ww1.microchip.com/downloads/en/DeviceDoc/21298e.pdf",
    "parts": {
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      "footprint": "mcp3208.kicad_mod",
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      "model_3d_step": "mcp3208-etched.step",
      "model_3d_step_plain": "mcp3208.step"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "CH0",
        "type": "input",
        "description": "Analog input channel 0. Configurable as single-ended input or as IN+/IN- of a pseudo-differential pair with CH1. Input range VSS to VREF in single-ended mode."
      },
      {
        "number": "2",
        "name": "CH1",
        "type": "input",
        "description": "Analog input channel 1. Configurable as single-ended input or as IN+/IN- of a pseudo-differential pair with CH0."
      },
      {
        "number": "3",
        "name": "CH2",
        "type": "input",
        "description": "Analog input channel 2. Configurable as single-ended input or as IN+/IN- of a pseudo-differential pair with CH3."
      },
      {
        "number": "4",
        "name": "CH3",
        "type": "input",
        "description": "Analog input channel 3. Configurable as single-ended input or as IN+/IN- of a pseudo-differential pair with CH2."
      },
      {
        "number": "5",
        "name": "CH4",
        "type": "input",
        "description": "Analog input channel 4. Configurable as single-ended input or as IN+/IN- of a pseudo-differential pair with CH5."
      },
      {
        "number": "6",
        "name": "CH5",
        "type": "input",
        "description": "Analog input channel 5. Configurable as single-ended input or as IN+/IN- of a pseudo-differential pair with CH4."
      },
      {
        "number": "7",
        "name": "CH6",
        "type": "input",
        "description": "Analog input channel 6. Configurable as single-ended input or as IN+/IN- of a pseudo-differential pair with CH7."
      },
      {
        "number": "8",
        "name": "CH7",
        "type": "input",
        "description": "Analog input channel 7. Configurable as single-ended input or as IN+/IN- of a pseudo-differential pair with CH6."
      },
      {
        "number": "9",
        "name": "DGND",
        "type": "power_in",
        "description": "Digital ground return for internal digital circuitry. Connect to the system ground plane; keep separate return path from AGND where possible."
      },
      {
        "number": "10",
        "name": "CS/SHDN",
        "type": "input",
        "description": "Active-low chip select / shutdown input. Falling edge initiates SPI communication and starts a conversion; driving high ends the conversion and places the device in low-power standby (IDDS ~0.5 uA typ). Must be pulled high between conversions."
      },
      {
        "number": "11",
        "name": "DIN",
        "type": "input",
        "description": "SPI serial data input (MOSI). Used to load the start bit, single/differential select, and channel configuration bits into the device. Data is latched on the rising edge of CLK."
      },
      {
        "number": "12",
        "name": "DOUT",
        "type": "output",
        "description": "SPI serial data output (MISO). Shifts out the 12-bit conversion result MSB first as the conversion takes place; data changes on the falling edge of CLK. High-impedance when CS is high."
      },
      {
        "number": "13",
        "name": "CLK",
        "type": "input",
        "description": "SPI serial clock input. Initiates conversion and clocks each bit of the conversion out on DOUT. fCLK max 2.0 MHz at VDD=5V, 1.0 MHz at VDD=2.7V; effective clock rates below 10 kHz can affect linearity due to sample-cap charge loss."
      },
      {
        "number": "14",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground return for internal analog circuitry. Connect to the analog ground plane and tie to DGND at a single star point to minimise digital noise coupling into conversions."
      },
      {
        "number": "15",
        "name": "VREF",
        "type": "input",
        "description": "External reference voltage input. Sets the analog input full-scale range. Valid range 0.25 V to VDD; typical current drain 100 uA (150 uA max). Reference noise/instability directly affects conversion accuracy."
      },
      {
        "number": "16",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply voltage, +2.7 V to +5.5 V. Typical operating current 320 uA at 5V (400 uA max, DOUT unloaded); bypass locally with a 0.1 uF ceramic to DGND/AGND."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://ww1.microchip.com/downloads/en/DeviceDoc/21298e.pdf",
        "pages": 40,
        "sha256": "89bc1e17c35e2bb1",
        "source_tier": "mfr"
      },
      "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"
    },
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
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        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-10-07",
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  },
  "metadata": {
    "specs": {
      "Type": "8-channel SAR ADC",
      "Resolution": "12-bit",
      "Sample rate": "100 ksps (at 5 V)",
      "Inputs": "8 single-ended or 4 pseudo-differential",
      "Interface": "SPI (up to 2 MHz)",
      "Reference": "external VREF pin",
      "Supply voltage": "2.7-5.5 V",
      "Package": "SOIC-16"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "mcp3208",
    "12-bit adc",
    "8 channel spi adc",
    "precision adc",
    "mcp3008 12 bit"
  ],
  "discovery_pitch": "MCP3208 8-channel 12-bit SPI ADC (SOIC-16) with datasheet-verified pinout, KiCad symbol/footprint/3D, and full provenance.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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    "path": "docs/hero.png"
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  "variants": [
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      "mpn": "MCP3208-CI/SL (SOIC-16)",
      "kind": "packaging"
    },
    {
      "mpn": "MCP3208-CI/P (PDIP-16)",
      "kind": "packaging"
    }
  ]
}