10-bit DAC with SPI and dual-supply rails
The MAX504CSD+ is a single-channel 10-bit digital-to-analog converter from Analog Devices with a voltage-buffered output, built on an R-2R resistor-ladder architecture that guarantees monotonic performance across the full output range. It communicates over a standard SPI data interface and requires dual supply rails: ±5 V for the analog section and a separate 5 V digital supply, which is typical for mixed-signal designs where the analog output stage needs a bipolar rail to swing near ground.
Settling time and linearity for control-loop duty
The 25 µs typical settling time sets the upper bound on how fast the output can update to a new code — useful for closed-loop control or waveform generation where update rates above ~40 kHz would outrun the DAC's settling window. Integral nonlinearity is ±0.5 LSB maximum and differential nonlinearity is ±1 LSB maximum, meaning the output code-to-voltage relationship stays within half a least-significant bit of an ideal straight line, and no missing codes are guaranteed over temperature.
Supply rails and reference flexibility
The part accepts either an external or internal voltage reference, giving the designer a choice between a precision external reference for tighter absolute accuracy or the on-chip reference to save board space and BOM cost. The analog supply range is ±5 V, while the digital supply is fixed at 5 V — a common split-rail arrangement that allows the output to swing from near the negative rail to within a volt of the positive rail, useful for bipolar signal chains.
Package, temperature grade, and compliance
Housed in a 14-pin SOIC package (14-SOIC, 0.154-inch body width, 3.90 mm), surface-mount soldered directly to the PCB, with the standard SOIC footprint that does not require an exposed pad or special thermal management.