8-bit Serial I/o A/d Converter With 4-channel Multiplexer

The ADC0833 series is an 8-bit successive approximation A/D converter with a serial I/O and configurable input multi- plexer with 4 channels. The serial I/O is configured to com- ply with the NSC MICROWIRETM serial data exchange stan- dard for easy Interface to the COPSTM family of processors, as well as with standard Shift registers or mPs. The 4-channel multiplexer is software configured for single- ended or differential inputs when channel assigned by a 4- bit serial word. The differential Analog voltage input allows increasing the common-mode rejection and offsetting the Analog zero in- put voltage value. In addition, the Voltage Reference input CAN be adjusted to allow encoding any smaller Analog volt- age span to the full 8 bits of resolution. By National Semiconductor Corporation