The paper presents an original CMOS implementation of current and voltage followers in 40 nm TSMC technology. Authors have designed these components as basic components for construction more complex analog and mixed-signal embedded systems based on current signals processing. The main parameters of these basic building blocks have been analyzed and discussed. Authors give fundamental mathematical equations that allow describing both followers and their applications. Modern electronic systems need to be flexible with ability of programming some of their parameters. Thus, the idea digital-analog front-end based on binary programming of circuits parameters is introduced. Results of simulation experiments carried out with the presented components are given. Finally, the investigations are summarized and some conclusions emphasizing the quality of the analyzed approach are presented.