DAC Design ( binary weighted Capacitor)

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vimedu

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I am design a DAC ( binary weighted DAC). My analog input ranges from .5 V to .75 V.
How much should be my Vref in the design? And how to decide ?

Please anyone help me
 

how many bits are there in your DAC?? i think the Vref depends on that....
the Vout=Value(digital) *Vref/(2^N) [for N bit DAC]
 

What ever Vref you decide with direclty affect your opamp specs . vref is normaly given and from VRef we decide LSB and opamp specs .
 

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