The DAC8043 is a 12-bit current output multiplying digital-to-analog converter (DAC) that is packaged in a space-saving, surface-mount 8-pin SOIC. Its 3-wire serial interface saves additional circuit board space which results in low power dissipation. When used with microprocessors having a serial port, the DAC8043 minimizes the digital noise feedthrough from its input to output. The serial port can be used as a dedicated analog bus and kept inactive while the DAC8043 is in use. Serial interfacing reduces the complexity of opto or transformer isolation applications.