12-bit dual DAC with R-2R ladder and parallel interface
The Analog Devices DAC8221FSZ is a 12-bit, dual-channel digital-to-analog converter with current-unbuffered output, built around a classic R-2R ladder architecture. It settles to within ±0.5 LSB in 1 µs, making it suitable for control-loop and waveform-generation applications where two independent analog outputs share a common reference. Data is written via a parallel interface, which gives deterministic latency — no serial clock dependency — so the update timing is set by the host's write strobe alone. The external reference type means the full-scale output range tracks whatever reference voltage you supply, from 5 V to 15 V on both the analog and digital rails.
Industrial temperature grade and surface-mount package
The 24-SOIC (7.50 mm wide) body is a standard footprint for 8- to 14-bit converters; the wide-body SOIC gives better thermal coupling to the PCB copper than the narrow version. Supplied in a tube, the part is MSL-rated per the standard JEDEC profile for the package. The surface-mount leads are tin-plated and compatible with lead-free reflow — no special bake required if the moisture barrier bag is intact and the floor life has not been exceeded.
How it compares to the AD7545AKRZ-REEL7
The closest functional peer listed is the AD7545AKRZ-REEL7. Both are 12-bit, R-2R, current-unbuffered DACs with 1 µs settling and a parallel interface. The DAC8221FSZ gives you two DAC channels in one package versus the AD7545's single channel, and its INL/DNL is tighter (±0.4 / ±0.2 LSB) compared to the AD7545's ±0.5 / ±1 LSB max. If your BOM calls for a dual DAC in the same package width, the DAC8221FSZ is the drop-in upgrade without a board spin.