The S9418 DACPOTTM is a serial input, voltage output, quad 8-bit digital to analog converter. The S9418 operates from a single +2.7V to +5.5V supply. Internal precision buffers swing rail-to-rail and the reference input range includes both ground and the positive supply. The S9418 integrates four 8-bit DACs and their associated circuits which include; an enhanced unity gain operational amplifier output, an 8-bit data latch, an 8-bit nonvolatile register and an industry standard serial interface for reading and writing data to the DACs' data latches and registers. The DACs are independently programmable and each has its own electrically isolated Vreference inputs.