some questions about sigma_delta adc

大大山

i have some questions about sigma_delta adc:
  can anyone tell me the relationship between  the coefficient of capacitance and the input voltage,thank  you!!

lqlcug

The input voltage is just limited by the stability(have relativity with architecture) and the Reference Voltage. The coefficient of capacitors decide the stability .
     So someone usually make the system modeling decide the coefficient. there are method such as numeration method , Simulated annealing and so on ,it's very difficult. someone also use the experience to decide the coefficient.