High slew-rate OTA with low quiescent current based on non-linear current mirror

This paper presents a high slew-rate OTA based on a non-linear current mirror which dramatically reduces the quiescent current. The proposed circuit achieves less quiescent current than previous proposed architectures since no additional bias branches are needed. The compactness of the proposed architecture does not require so much silicon area as other more complex adaptive bias architectures. The proposed circuit was simulated in a 0.5µm CMOS process and compared with other previously presented works.