Maxim 132 series 18 bit adc with serial interface maxim max132cng this analog to digital converter adc is a cmos 18 bit serial output integrating device that features a multi slope integration that enables operation up to 100 conversions per second and higher resolution conversions in less time than standard integrating adcs communication is via a 4 wire serial interface that easily connects to all common microprocessors br br four serially programmed digital outputs can be use