{"product_id":"mcp4728-12-bit-4-channel-dac-module-i2c-interface","title":"MCP4728 12-Bit 4-Channel DAC Module - I2C Interface","description":"\u003ch1\u003eMCP4728 12-Bit 4-Channel DAC with I2C and EEPROM\u003c\/h1\u003e\n\n\u003cp\u003eThe MCP4728 is a quad-channel, 12-bit digital-to-analog converter with on‑board EEPROM and an I2C interface. It provides four independent analog voltage outputs from a single device, making it ideal for precision control applications such as sensor simulation, waveform generation, and voltage calibration. With built‑in reference options and low power consumption, it integrates seamlessly into microcontroller projects.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e12 bits\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eChannels\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003eI2C (address selectable via A0 pin)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e2.7V to 5.5V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInternal Reference\u003c\/td\u003e\n\u003ctd\u003e2.048V (can use external VREF)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eEEPROM\u003c\/td\u003e\n\u003ctd\u003eIntegrated (stores DAC settings)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eProgrammable multi‑channel voltage source for testing\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/esp32-waveform-generator-kit-build-4-waveforms-with-web-ui\"\u003eAudio waveform generator (e.g., sine, square, triangle)\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eSensor output simulator (e.g., pressure, temperature)\u003c\/li\u003e\n  \u003cli\u003ePrecision LED brightness control with multiple independent channels\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis DAC operates on 3.3V and 5V logic, making it fully compatible with Arduino, Raspberry Pi, ESP32, and any microcontroller that supports I2C. The module works out of the box with the standard Wire library on Arduino and the smbus2 library on Raspberry Pi.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect VCC to 3.3V or 5V, GND to ground, and SDA\/SCL to your microcontroller's I2C pins. The module includes onboard pull‑up resistors, so external pull‑ups are not required for most setups. For external reference, connect a stable voltage (up to VCC) to the VREF pin; leave it unconnected to use the internal 2.048V reference.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, the MCP4728 module works directly with Arduino using the Wire library. Set the I2C address (default 0x60) and send 12‑bit values for each channel.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I use an external voltage reference?\u003c\/summary\u003e\u003cp\u003eAbsolutely. The VREF pin allows an external reference up to the supply voltage. When an external reference is applied, the internal 2.048V reference is automatically overridden.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes it retain settings after power is removed?\u003c\/summary\u003e\u003cp\u003eYes. The integrated EEPROM stores DAC register values and configuration bits, so your last settings are restored upon power-up if saved before shutdown.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53445080744301,"sku":"CDN-0936","price":350.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/download_8e60706b-f22e-4a8e-be9a-dda9c53ac089.jpg?v=1781592458","url":"https:\/\/compoden.com\/products\/mcp4728-12-bit-4-channel-dac-module-i2c-interface","provider":"Compoden","version":"1.0","type":"link"}