FAQ No.:0000001  Issue Date:2015-02-04

What is the operating voltage for ADC converter?

In the NuMicro™ family, the power distribution is divided into three segments:

1. Analog power from AVDD and AVSS provides the power for analog components operation;

2. Digital power from VDD and VSS supplies the power to the internal regulator with a fixed 1.8 V power for digital operation and I/O pins. (Except NUC100/120 AN, NUC100/120 BN and NUC130/140 CN and M051 AN Series will be 2.5V.)

3. USB transceiver power from VBUS offers the power for operating the USB transceiver (for NuMicro USB Series only).

The operating voltage for ADC converter is 0 ~ VREF. Analog power (AVDD) should be the same voltage level of the digital power (VDD), otherwise the leakage occurs.

Below figure is an example for the power architecture of NUC122 Series.

Products: M051 Base Series , M0518 Series , Mini51 Base Series , Nano100/102 Base Series , Nano110/112 LCD Series , Nano120 USB Series , Nano130 Advanced Series , NUC029 Series , NUC100/200 Advanced Series , NUC120/122/123/220 USB Series , NUC130/230 CAN Series , NUC131 CAN Series , NUC140/240 Connectivity Series , M451 Base Series , M451M Series , M452 USB Series , M453 CAN Series , NUC442/472 Series , NUC505 Series
Function: ADC


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