This block diagram shows a basic overview of the SAR ADC based ADuC702x family. Again, highlighted in blue is the analog section of the chip which include an integrated 12-bit SAR ADC with from 5 to 16 input channels (dependent on the specific model selected). The ADC inputs may be configured in Single-Ended mode, Fully Differential mode, or a Pseudo-Differential mode. However, in Pseudo Differential mode, an external bias signal is required. Also included in the analog portion of the diagram are up to four 12-bit DACs, a voltage reference, and an on-chip comparator.