Analog to Digital Converters are widely used in the field of VLSI and are mainly used in the applications like audio, instrumentation, seismic, voice etc which requires higher value of resolution. For such applications, ADCs can be used based on Nyquist Rate modulators (where sampling is done with twice the sampling frequency) or Sigma-Delta modulators (where sampling is done with 15-20 times the sampling frequency). ADC based on sigma-delta modulators is attractive for VLSI implementation because they are not so sensitive of circuit non-idealities and component mismatch. However, issues such...