A new topology for translinear filters in CMOS IC technology is presented. This translinear filter is based on the exponential relation of passive PN-diodes in CMOS technology while the CMOS transistors only provide gain. From simulations, it is demonstrated that this topology leads to an improvement in high-frequency performance. Cut-off frequencies higher than 200 MHz with Total Harmonic Distortion (THD) figures around 2% are reported. Keywords – dynamic translinear, translinear, log domain, analog electronics, CMOS, filter.
Sandro A. P. Haddad, Wouter A. Serdijn