8-bit dual DAC with 120 ns settling
The AD5428YRUZ is an 8-bit, dual-channel digital-to-analog converter from Analog Devices, built on a current-unbuffered R-2R architecture. It settles to 0.5 LSB within 120 ns, making it suitable for high-speed waveform generation or closed-loop control loops where the update rate is limited by the DAC, not the downstream amplifier.
Linearity and interface
Integral nonlinearity is ±0.25 LSB maximum, and differential nonlinearity is ±1 LSB maximum — the monotonicity guarantee across the full 8-bit range means a rising digital code always produces a rising analog output, which matters in servo loops where a non-monotonic step would reverse the correction direction. The parallel data interface accepts an 8-bit word on a single strobe — no serial clock needed, so the update rate is limited only by the write-pulse width and the 120 ns settling time. Both converters share the same data bus; the channel select pin determines which DAC latch captures the word.