If reducing the CMOS data output resistor count (or pin count) is even more critical in your system, then using a serialized CMOS interface (DDR) may be an attractive choice. Similar to parallel CMOS, there are a few options to consider when using a serial CMOS interface.

To transmit all 14 bits within the time period of the sampling rate, the ADC output data must be transmitted at a faster rate (serialized), and we must provide this serialization frequency as an input to the ADC. Also, a frame clock is now generated by the ADC to encapsulate each 14 bit sample, so that we will know the beginning and end of each sample.