A class-AB square-root domain biquad filter based on floating gate MOS transistors

In this paper a new approach for designing of a class-AB current-mode square-root domain biquad filter based on the electronically simulated translinear loop principle is presented. FG-MOS transistors that operate in strong inverted saturation region are employed for implementation of translinear loop circuit. The proposed filter is immune to body effect, has low circuit complexity and large input dynamic range, and also works in low voltage compared to those reported before. Simulation results by HSPICE confirm the validity of the proposed design technique and show high performance of the filter.