The DAC8800FPZ is an octal 8-bit Digital-to-analog Converter (DAC) designed to be a general purpose digitally controlled voltage adjustment device. The output voltage range can be independently set for set of four D/A converter. In addition, both unipolar and bipolar output voltage ranges are easy to establish by external reference input high and low terminals. The digitally-programmed output voltages are ideal for op amp trimming, voltage-controlled amplifier gain setting and any general purpose trimming tasks. A 3-wire serial digital interface loads the contents of eight internal DAC registers which establish the output voltage levels. An asynchronous clear (CLR) input places DAC in a zero code output condition, very handy for system power-up. An internal regulator provides TTL input compatibility over a wide range of VDD supply voltages. Single supply operation is available by connecting VSS to GND.