Reply To: The well segmented dac-24 bit 384khz thermometer/r2r sign-magnitude discrete dac

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#1979
Sebastian
Participant

Hi Andrea,

 

I am preparing the power supplies.  For the digital part of the DAC (+/- 3.3 to +/- 5v), the clean side of the FIFO (3.3 to 5V) of the DRIXO (12-18V) is there any advantage for any particular voltage in those ranges?

I will be using the UltraBib 1.3 and while it can be brought down to 3.3v with special parts, it is easier to get 5v.  So If there is no penalty, I wold go with 5v for the first two.  For the last I can aim at whatever voltage in the rage, buy I have to take into account the transformers sec. VAC.

 

For Vref I will also use the Ultrabib, but in this case I might have to do down to +/-3.3V because of my systems gain structure (not yet sure on this).

 

Best regards,

S.