8-bit High-speed Serial I/o A/d Converters With Multiplexer Options, Voltage Reference, And Track/hold Function - National Semiconductor

The ADC08131 ADC08134 ADC08138 are 8-bit successive approximation A/D converters with serial I/O and config- urable input multiplexers with up to 8 channels. The serial I/O is configured to comply with the NSC MICROWIRE se- rial data exchange standard for easy Interface to the COPS family of controllers, and CAN easily Interface with standard Shift registers or Microprocessors 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. By National Semiconductor Corporation