Dennison used this opportunity to show that designers need to pay attention to the actual Operational Amplifier (Op Amp) specification which was provided by the industries to improve the yielded quality. For example, the amplifying of an Op Amp (open or closed loop) is now no longer modeled as a constant (a model that is typically used in academic designs), but as a parameter device which depends on frequency. Using this approach, the results from each step of circuit design will roughly be equal to each other. This means that the results from on-paper analysis, computer simulation, and even hardware testing will conform to each other. The specific performance of the system can then be predicted and obtained when the non-ideal specification is taken into account. On the other hand, the use of ideal Op Amp specification does not always produce a predictable system performance.

James Dennison, a man with a broad industrial and academical background, is currently leaving his position in McNeese State University (USA) Engineering Field for ITB Electrical Engineering in the academic year of 2015/2016. Before spending 20 years teaching university students, Professor Dennison was a product design engineer and project manager at IBM for 30 years. In ITB Electrical Engineering, Professor Dennison continues to develop teaching materials on practical design of non-ideal Op Amp specification. ITB as an education institution has played a role in optimizing teaching methods with international level collaboration.

Source: stei.itb.ac.id

Translated by

ITB Journalist Apprentice

Luthfi Naufan Yamin (Electrical Engineering 2014)