ADC08231

ADC08231 ADC08234 ADC08238 8-Bit 2 ms Serial I O A D Converters with MUX Reference and Track Hold December 1994 ADC08231 ADC08234 ADC08238 8-Bit 2 ms Serial I O A D Converters with MUX Reference and Track Hold General Description The ADC08231 ADC08234 ADC08238 are 8-bit successive approximation A D converters with serial I O and configurable input multiplexers with up to 8 channels The serial I O is configured to comply with the NSC MICROWIRE TM serial data exchange standard for easy interface to the COPSTM family of controllers and can easily interface with standard shift registers or microprocessors Designed for high-speed low-power applications the devices are capable of a fast 2 ms conversion when used with a 4 MHz clock All three devices provide a 2 5V band-gap derived reference with guaranteed performance over temperature A track hold function allows the analog voltage at the positive input to vary during the actual A D conversion The analog inputs can be configured to operate in various combinations of single-ended differential or pseudo-differential modes In addition input voltage spans as small as 1V can be accommodated Features Y Y Y Y Y Y Y Y Serial digital data link requires few I O pins Analog input track hold function 4- or 8-channel input multiplexer options with address logic On-chip 2 5V band-gap reference ( g 2% over temperature guaranteed) No zero or full scale adjustment required TTL CMOS input output compatible 0V to 5V analog input range with sing...