A Novel Architecture for Reducing the Sensitivity of Multibit Sigma-Delta ADCs To DAC Nonlinearity

A novel first order sigma-delta architecture, which also shapes the nonlinearity of the DAC is proposed. Unlike other proposed solutions this topology consists of multibit quantisation noise only so offers enhanced stability and higher-order noise-shaping at the expense of a highly linear analog differentiatior. The paper discusses some aspects of a… CONTINUE READING