12-bit quad DAC with I²C – what it replaces on the board
The MCP47CVB24T-E/ML is a 12-bit, quad-channel, voltage-output DAC from Microchip's MCP series, using an R-2R ladder architecture. Its I²C data interface keeps the pin count down to 20 leads in a 4x4 mm QFN package — a dense footprint that frees board area for other analog or mixed-signal blocks. Four independent DACs in one package means you replace four single-channel DACs or a larger multi-channel part, cutting per-channel cost and routing complexity. The buffered voltage output can drive moderate loads directly without an external op-amp, though the 16 µs typical settling time sets the upper bound on update rate — fine for set-point control or slow modulation, not for high-speed waveform synthesis.
The analog and digital supply rails each accept 1.8V to 5.5V, so the part runs from a common 3.3V or 5V rail without a separate regulator. Reference type is selectable between external, internal, or supply, giving the designer control over the output voltage span. Using the supply as reference (ratiometric mode) saves a pin and a reference IC, but ties the full-scale voltage to the rail's accuracy.
The 20-QFN (4x4 mm) package is a standard Microchip footprint — no exotic reball or custom stencil needed in rework.