The ADC0852 and ADC0854 are CMOS devices that combine a versatile analog input multiplexer voltage comparator and an 8-bit DAC which provides the comparator's threshold voltage (VTH) The comparator provides a ``1-bit'' output as a result of a comparison between the analog input and the DAC's output This allows for easy implementation of set-point on-off or ``bang-bang'' control systems with several advantages over previous devices The ADC0854 has a 4 input multiplexer that can be software configured for single ended pseudo-differential and full-differential modes of operation In addition the DAC's reference input is brought out to allow for reduction of the span The ADC0852 has a two input multiplexer that can be configured as 2 single-ended or 1 differential input pair The DAC reference input is internally tied to VCC The multiplexer and 8-bit DAC are programmed via a serial data input word Once programmed the output is updated