A wide-range tunable 25 MHz-110 MHz BiCMOS continuous-time filter

A high speed bandpass continuous-time biquad filter is implemented in a 0.8 /spl mu/m BiCMOS technology. It demonstrates a wide range of frequency tunability from 25 MHz-110 MHz. The filter intermodulation distortion stays below -52 dB at 50 MHz with 100 mV/sub p/ input differential signals. The power consumption (f/sub 0/=50 MHz) is 90 mW with a single 5 V supply.