**5. Conclusions**

In this paper, a digital OTA which, unless the others in literature, is realized with only digital gates of a standard cell library is proposed and demonstrated. The post layout circuit, resulting from a fully automatic design process, was simulated in open and closed loop conditions, which completely validate the idea.

In order to compare the performance of the proposed SC-DIGOTA with respect the previously DIGOTAs presented in literature, well-known figures of merits have been used. The comparison shows that added to main strength deriving by the fully standard cell realization, which gives significant advantages in the design step. The SG-DIGOTA results are also very competitive in the small signal domain, especially considering the very small silicon area required, while performing less in the large signal domain.

**Author Contributions:** Conceptualization, G.S.; methodology, G.S. and G.P.; software, G.S.; validation, G.S. and G.P.; writing—original draft preparation, G.S. and G.P.; writing—review and editing, G.S. and G.P. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research received no external funding.

**Data Availability Statement:** The data presented in this study are available in article.

**Conflicts of Interest:** The authors declare no conflict of interest.
