CMOS balanced output transconductor and applications for analog VLSI

A new CMOS programmable balanced output transconductor (BOTA) is introduced . The BOTA is a useful block for continuous-time analog signal processing. A new CMOS realization based on MOS transistors operating in the saturation region is given. Application of the BOTA in realizing bandpass-lowpass-all pass-notch biquad mixed mode filter using four BOTAs and two grounded capac itors and in realizing current mode MOS-C oscillators using three or four B OTAs and two grounded capacitors are given. PSpice simulation results for t he BOTA circuit and for its applications are also included. (C) 1998 Elsevi er Science Ltd. All rights reserved.