A Very Wideband OTA-C Filter in CMOS VLSI Technology

摘要

This paper describes the design of a fully differential, highly linear, very wide band OTA-C filter implemented using a modern 0.18 μm CMOS technological process. The filter is a sixth order Chebyshev bandpass filter with passband from 2 MHz to 400 MHz and 1 dB ripple in the passband. The filter consumes 80.70 mW of power with supply voltages of ±1.5 V. The dynamic rage is close to 40 dB and the third order intermodulation intercept (IIP{sub}3) is -27.29 dBW (i.e., 2.71 dBm). This filter could be used as a wideband vestigial sideband filter.