The MAX506BCWP+ is a quad 8-bit voltage-output digital-to-analog converter from Analog Devices, built on an R-2R ladder architecture. It packs four independent DACs into a 20-SOIC package, each with a buffered voltage output and a parallel data interface. Typical settling time is 6 µs, which puts it in the range for moderate-speed control loops, trim adjustments, or multi-channel waveform generation where 8-bit resolution is sufficient. The part requires split supplies — ±5 V for the analog section and +5 V for the digital logic — and uses an external voltage reference.
Dual-supply reality for the BOM
The supply scheme: analog rails at ±5 V and a separate digital 5 V rail. That means the board needs three supply voltages unless the ±5 V is already on the board for op-amps or an ADC.