Power-minimization Design Procedure for Rauch Biquadratic Cells

In this paper an analytical procedure to design the single-opamp active-RC Rauch biquadratic cells is presented. The design procedure optimizes the trade-off between the opamp input referred noise and the thermal noise due to the filter resistors, in order to minimize the current consumption. The proposed procedure is validated by means of a benchmark of a biquadratic cell for an UMTS and WLAN applications. The design is realized using the 0.13μm CMOS technology with a 1.2V supply voltage.