The AD5697R， a member of the nanoDAC+? family， is a low power， dual， 12-bit buffered voltage output digital-to-analog converter （DAC）。 The device includes a 2.5 V， 2 ppm/°C internal reference （enabled by default） and a gain select pin giving a full-scale output of 2.5 V （gain = 1） or 5 V （gain = 2）。 The AD5697R operates from a single 2.7 V to 5.5 V supply， is guaranteed monotonic by design， and exhibits less than 0.1% FSR gain error and 1.5 mV offset error performance. The device is available in a 3 mm × 3 mm LFCSP and a TSSOP package. The AD5697R also incorporates 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. It 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 AD5697R uses a versatile 2-wire serial interface that operates at clock rates up to 400 kHz and includes a VLOGIC pin intended for 1.8 V/3 V/5 V logic