I'm using a UC3C1128C in 5V configuration with an external 3.0V reference. The datasheet says 7ua/Mhz for the ADC and 3ua/Mhz for the DAC. Although it says that includes power from VDDANA I have doubts.
I'm running the CPU and the buses at 7.3728Mhz. The A/D is setup for no S/H with 2 channels being converted using a 460800Hz clock. The 5V current increases by 3.88ma when the A/D is configured and started. A lot higher than the 52ua the datasheet suggests.
For the DAC it's running with 1 output at an update rate of about 25Khz if I remember correctly. The 5V current increases by 2.34ma when it is configured and started. Again, a lot higher than the 22ua the datasheet suggests.
Anyone else measured actual ADC and DAC current consumptions?