MCP4728 Quad 12-Bit DAC

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  "type": "component",
  "slug": "mcp4728",
  "title": "MCP4728 Quad 12-Bit DAC",
  "brief": "Quad-channel 12-bit voltage-output DAC with EEPROM and I2C, keeps settings through power cycles.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "dac",
    "12-bit",
    "quad",
    "i2c",
    "eeprom",
    "microchip",
    "msop-10"
  ],
  "component": {
    "mpn": "MCP4728",
    "manufacturer": "Microchip",
    "package": "MSOP-10",
    "pin_count": 10,
    "category": "Analog",
    "subcategory": "Digital-to-Analog Converter",
    "datasheet": "https://ww1.microchip.com/downloads/en/devicedoc/22187e.pdf",
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    "pins": [
      {
        "number": "1",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply voltage input, 2.7V to 5.5V. Also serves as the external voltage reference (VREF = VDD) when the external reference is selected. Bypass with a 0.1 µF ceramic capacitor to VSS."
      },
      {
        "number": "2",
        "name": "SCL",
        "type": "input",
        "description": "I2C serial clock input. Open-drain, requires an external pull-up resistor to VDD. Supports Standard (100 kHz), Fast (400 kHz), and High-Speed (3.4 MHz) modes."
      },
      {
        "number": "3",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C serial data line. Open-drain, requires an external pull-up resistor to VDD. Bidirectional data line for reads/writes to DAC input registers and EEPROM."
      },
      {
        "number": "4",
        "name": "LDAC",
        "type": "input",
        "description": "Active-low latch DAC input. A high-to-low transition transfers the contents of the input registers to the output DAC registers, updating all four analog outputs synchronously. Tie high if not used."
      },
      {
        "number": "5",
        "name": "RDY/BSY",
        "type": "output",
        "description": "Ready/Busy status output. Indicates EEPROM programming status: high when the internal EEPROM write is complete (Ready), low while EEPROM is being programmed (Busy). Open-drain style status pin."
      },
      {
        "number": "6",
        "name": "VOUT A",
        "type": "output",
        "description": "Analog voltage output for DAC channel A. Buffered rail-to-rail output; full-scale range is either VDD (external reference) or VREF/2·VREF (internal 2.048V reference with gain 1 or 2). Short-circuit current typ. 15 mA."
      },
      {
        "number": "7",
        "name": "VOUT B",
        "type": "output",
        "description": "Analog voltage output for DAC channel B. Buffered rail-to-rail output; full-scale range is either VDD (external reference) or VREF/2·VREF (internal 2.048V reference with gain 1 or 2)."
      },
      {
        "number": "8",
        "name": "VOUT C",
        "type": "output",
        "description": "Analog voltage output for DAC channel C. Buffered rail-to-rail output; full-scale range is either VDD (external reference) or VREF/2·VREF (internal 2.048V reference with gain 1 or 2)."
      },
      {
        "number": "9",
        "name": "VOUT D",
        "type": "output",
        "description": "Analog voltage output for DAC channel D. Buffered rail-to-rail output; full-scale range is either VDD (external reference) or VREF/2·VREF (internal 2.048V reference with gain 1 or 2)."
      },
      {
        "number": "10",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground / negative supply reference (0 V)."
      }
    ],
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        "pages": 68,
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        "source_tier": "mfr"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 10,
        "described": 10,
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        "refuses_to_fabricate": true
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  "metadata": {
    "specs": {
      "Resolution": "12-bit, 4 channels",
      "Output": "Voltage output (rail-to-rail)",
      "Reference": "Internal 2.048 V or VDD, per channel",
      "Nonvolatile": "EEPROM stores settings + power-on state",
      "Interface": "I2C (standard/fast/high-speed)",
      "Supply voltage": "2.7 V to 5.5 V",
      "Operating temperature": "-40 C to 85 C"
    }
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  "discovery_triggers": [
    "quad DAC",
    "I2C DAC",
    "voltage output DAC",
    "nonvolatile DAC",
    "4-channel analog out"
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  "discovery_pitch": "Four 12-bit analog outputs over I2C that remember their last values in EEPROM after a power cycle.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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