PCB For MCP4921E SPI DAC Module

Description

PCB For MCP4921E SPI DAC Module

This is a DIY-friendly breakout PCB designed for the MCP4921E 12-bit SPI DAC. The board allows users to easily build a precision Digital-to-Analog Converter module with a selectable reference voltage source. The design is ideal for learning, prototyping, and integrating into Arduino, ESP32, STM32, or other microcontroller projects.

The PCB includes pads for the MCP4921 DAC IC, a MCP1541 precision 4.096V voltage reference, and a jumper option to select VCC or MCP1541 as the DAC reference. Users receive the schematic and interactive BOM for easy DIY assembly.

Features

• Supports MCP4921E (12-bit DAC, SPI interface)

• Selectable VREF: Jumper allows choosing between VCC supply or onboard MCP1541 (4.096V precision reference)

• Compact PCB layout for breadboard and embedded applications

• Clearly labeled pins for easy connections (SPI: CS, SCK, MOSI, VCC, GND, VOUT)

• DIY soldering friendly: Sold as empty PCB only (no components included)

• Provided resources: Schematic + Interactive BOM for guided soldering assembly

• Quality PCB: FR4 material, plated through-holes, solder mask, and silkscreen

Typical Applications

• Learn how DACs work in microcontroller projects

• Generate analog voltage signals (waveform, audio, or control voltage)

• Sensor simulation and calibration

• Signal processing and test equipment DIY projects

• Training students in SMD soldering and circuit assembly

PCB Specifications

• Material: FR4, 1.6 mm thickness

• Copper: 1 oz (35 µm)

• Solder mask: Blue (other colors on bulk order)

• Silkscreen: White with clear labeling

• Dimensions: Compact (~25×20 mm, adjust per your layout)

• Through-hole and SMD pads for easy DIY assembly

What’s Included

• 1× MCP4921 DAC DIY PCB (empty board only)

• Digital files: Schematic + Interactive BOM for soldering assistance

👉 Ideal for hobbyists, students, and engineers who want to practice DIY soldering and experiment with precision DAC circuits in their projects.