Analysis and improvements of accurate dynamic current mirrors

The possibility of realizing highly accurate dynamic current mirrors based on dynamic analog techniques and improvements thereof is considered. These current mirrors, which memorize the input current, are insensitive to transistor mismatch, whereas for conventional current mirrors, the accuracy is limited by the achievable matching. Different current mirror structures are presented, the interfacing parameters are shown, and their influence is explained. The dominant transients occurring during switching are shown. Improvements which allow for increases in the performance of dynamic current mirrors are proposed, and experimental results are shown