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Design >> Mixed-Signal Design >> Comparator Vtrip in integrating ADC ?
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Message started by aic on Apr 27^th, 2017, 7:50am

Title: Comparator Vtrip in integrating ADC ?
Post by aic on Apr 27^th, 2017, 7:50am

I am designing a 8 bits dual slope integrating ADC. The modules (integrator and comparator)are implemented with single ended output architecture with supply 0V to 1V. Its analog input signal range is .25V to .75V ie Vcm is 0.5V and vamp is 0.25V. My confusion is choosing right Vref and Vtrip(Vtrip is reference voltage connected at +ve terminal of comparator to which we compare the voltage of integrating node). My understanding is Vref is .75V and Vtrip is 0.25V. Is this right?