ADI’s AD5681 / AD5682 / AD5683 and AD5691 / AD5692 / AD5693 are part of the nanoDAC+ family. These DACs are 3 V and 5 V, rail-to-rail devices with SPI and I²C interfaces. nanoDAC+ are known for their low power, monotonic, voltage output precision in extremely small 2 mm x 2 mm packages. These 12- / 14- / 16-bit DACs have a digital voltage supply range of 1.8 V or 2.7 V to 5.5 V and an analog voltage supply range of 2.7 V to 5.5 V. The AD568x family are all SPI interface devices with internal references. The AD569x family are all I²C devices with internal references. Both the AD5683 and AD5693 have options of an external reference as well.