What this 12-bit DAC brings to the board
The AD5691RACPZ-1RL7 is a single-channel, 12-bit voltage-output DAC from Analog Devices' nanoDAC+® family. It uses a string-DAC architecture for monotonic performance and integrates a 2 ppm/°C internal reference — no external reference chip needed unless you want a different span. The I2C interface keeps wiring to two lines, which matters when you're squeezing a trim DAC onto a crowded sensor board or a motor-drive control card. Settling to 12-bit accuracy takes 7 µs, fast enough for most closed-loop setpoint updates and calibration trims in industrial or instrumentation gear.
Supply rails and temperature range — no surprises
Housed in an 8-lead LFCSP-UD measuring 2 mm × 2 mm — the exposed pad helps pull heat into the PCB ground plane. Surface-mount only, so plan for reflow or hot-air rework. The small footprint is a win for dense mixed-signal layouts, but verify your stencil aperture for the pad; it's easy to starve the thermal joint on a 2×2 package.
ADI lists this part as Active. ROHS3 compliant.