Capacitor Multiplier with One Transconductor Cell

A new programmable capacitance multiplier implementation is presented in this paper. It is based on a fairly known architecture, but the proposed circuit employs only one linear transconductor (Gm cell). The mathematical analysis of the new capacitance multiplier is presented along with simulations performoed on a circuit implemented in standard 0.18-μm CMOS process. Two applications are also presented: a triangular waveform generator and afully differential lossy integrator, both with emulated capacitances programmable over three octaves.