A Low-Power Wideband Reconfigurable Integrated Active-RC Filter With 73 dB SFDR

A. Vasilopoulos, G. Vitzilaios, G. Theodoratos, Y. Papananos
2006 IEEE Journal of Solid-State Circuits  
In this paper, a low-power, highly linear, integrated, active-RC filter exhibiting a reconfigurable transfer function (Chebyshev, Elliptic) and bandwidth (5 MHz, 10 MHz), is presented. The filter exploits digitally-controlled polysilicon resistor banks and a digital automatic tuning scheme to account for process and temperature variations. The operational amplifiers used are based on a new compensation technique that allows optimized high-frequency filter performance and minimized current
more » ... ption. A filter prototype has been fabricated in a 0.12-m CMOS process, occupies 0.25 mm 2 (tuning circuit included), and achieves an IIP3 of approximately +20 dBm, whereas its spurious free dynamic range (SFDR) reaches 73 dB. The dissipation of the filter core and the tuning circuit is 4.6 mW and 1.5 mW, respectively.
doi:10.1109/jssc.2006.880616 fatcat:pxwnnr4zencmvj7ri4aocfm6fq