what is the maximum supply voltage for analog circuits (maximum AVcc)?

[cmao]

Posted on December 19, 2004 at 09:57

what is the maximum supply voltage for analog circuits (maximum AVcc)?

[cmao]

Posted on May 17, 2011 at 12:03Our analog input ranges from 0 to 4V, so my question is: can I use the ADC in uPSD3354DV ? In other words, I'd like to set reference voltage Vref = 4.096 V, supply analog circuits with AVcc = 5V, MCU Module Vcc= 3.3V, and PSD module Vdd=3.3V, is this setting feasible?

[daxenberger]

Posted on May 17, 2011 at 12:03

Hi,

AVref maximum is 3.6V! So you cannot use a higher voltage reference! You have to scale down your input voltage to a range that will not damage the MCU. Regards, Stefan