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12-bit I²C DAC with EEPROM

MCP4725 Working Principle

Learn how MCP4725 works with an illustrated explanation and practical readings.

MCP4725 at a glance

Follow the labeled connections and functional stages

MCP4725 working principle: illustrated functional stages, basic circuit and connections
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How it works

3 stages · Explore one step at a time

Step 1 / 3

Power a clean reference

Use 3.3 V at VDD and a common ground. Local 100 nF and 10 µF bypass capacitors reduce supply disturbance.

Step 2 / 3

Write the midpoint

At seven-bit address 0x60, the fast-write data bytes 0x08 and 0x00 load code 2048 in Normal mode without writing EEPROM.

Step 3 / 3

Measure the output

An ideal 3.3 V × 2048 / 4096 gives 1.650 V at VOUT. A high-impedance meter avoids excessive loading.

Component view