The errors study of the second order current-mode RC oscillators

摘要

This paper proposes a systematic approach of second order current-mode RC oscillators (CMO-RC) and the study of the errors introduced by these oscillators. The generation is done by current amplifying active blocks with a single input and two opposing outputs (SIDO) and standard current amplifiers (a single input and a single output). This solution of using one input - two outputs current amplifiers represents the edge of this proposed generation method. Theoretically such current amplifiers can be easily obtained, using current-conveyors. From the transfer function of the oscillator I intended determination of errors introduced by the parameters that can be estimated and intervene in the gain expression (Go) and in the frequency of oscillation (ω0). The appreciation of the parameter influence into changing the values of interest, previously determined, will be done considering constant the other parameters.