Eight-channel DAC for multi-output analog control
The MAX5258EEE+T integrates eight 8-bit voltage-output DACs in a single 16-QSOP package, each with a buffered output and a typical settling time of 10 µs. The SPI-compatible data interface daisy-chains easily with other serial peripherals, keeping the board-side wiring to four signal lines regardless of the number of channels used. Each DAC uses a string architecture with an external voltage reference, delivering an INL of ±0.1 LSB and DNL of ±0.05 LSB — monotonic by design across the full 8-bit range.
Settling time and linearity for closed-loop trimming
A 10 µs typical settling time to ±0.5 LSB means the DAC can update at roughly 100 kSPS per channel — adequate for slow-loop process control, bias trimming, or programmable voltage references. The ±0.1 LSB INL keeps the output error below one-quarter of an LSB at 5 V full-scale, which is roughly 2 mV of absolute error before reference tolerance. Both analog and digital supply rails are specified at 5 V, simplifying the power tree in a single-5 V system. The external reference input accepts any voltage between 0 V and VDD, so the output span can be scaled to match the ADC reference or sensor excitation voltage without an extra regulator.