A /spl plusmn/1.5 V, 4 MHz low-pass Gm-C filter in CMOS

摘要

A fifth-order, 4 MHz elliptic low-pass Gm-C filter is described, which is tuned by single-integrator based on-chip tuning circuit. MOS transistors in linear region are used for voltage-to-current conversion in OTA for low voltage operation. The experimental results of the prototype implemented in a 0.8 /spl mu/m CMOS process are given.