The AD5689/AD5687 members of the nanoDAC+? family are low power， dual， 16-/12-bit， buffered voltage output digital-toanalog converters （DACs）。 The devices include a gain select pin giving a full-scale output of 2.5 V （gain = 1） or 5 V （gain = 2）。 The AD5689/AD5687 operate from a single 2.7 V to 5.5 V supply， are guaranteed monotonic by design， and exhibit less than 0.1% FSR gain error and 1.5 mV offset error performance. Both devices are available in a 3 mm × 3 mm LFCSP and a TSSOP package. The AD5689/AD5687 also incorporate a power-on reset circuit and a RSTSEL pin that ensure that the DAC outputs power up to zero scale or midscale and remain there until a valid write takes place. Each part contains a per channel power-down feature that reduces the current consumption of the device to 4 μA at 3 V while in power-down mode. The AD5689/AD5687 use a versatile serial peripheral interface that operates at clock rates up to 50 MHz. Both devices contain a VLOGIC pin that is intended for 1.8 V/3 V/5 V logic.