Up to 16 ADC input channels are available depending on the part model selected with any unused DAC channels capable of being configured as ADC input channels. The ADC itself is a 1MSPS 12-bit ADC using a SAR architecture. The key D.C. specs are an INL (integral nonlinearity) of 1.5LSBs and DNL (differential nonlinearity) of 1LSB. It also features excellent A.C. performance with a SNR (signal-to-noise ratio) specification of 71dB.