Why I’m getting a DNL plot like this?
I have designed a flash ADC, and calculated its DNL using cadence virtuoso. and made use of the dnl function in calculator.
DNL Function equation
DNL plot i got
Calculation of DNL, INL of a Flash ADC using cadence virtuoso
I have designed a 3bit flash ADC, with a supply voltage of 1.2 V. ADC ADC wave form. here r0,r1,r2,r3,r4,r5,r6 are the divided reference voltages. b0,b1,b2 are the outputs(3 bit output).