Title :
The influence of the choice of ground node on the performance of active filters
Author_Institution :
Silicon Systems, Tustin, CA, USA
Abstract :
It is shown that, although the active nullor and CCII have no a priori ground node, the choice of ground for any practical filter incorporating these elements has an impact on the sensitivity of the realized poles to the device parasitics. A network derived from the high-pass Sallen and Key filter is studied for all choices of ground node, with measured and theoretical results given for an active nullor/CCII having nonzero input/output admittances, gain errors, and finite bandwidths
Keywords :
active filters; high-pass filters; poles and zeros; sensitivity analysis; Sallen/Key filter; active filters; active nullor; device parasitics; finite bandwidths; gain errors; ground node; high-pass; nonzero input/output admittances; Active filters; Admittance; Band pass filters; Bandwidth; Equations; Gain measurement; Grounding; Network topology; Operational amplifiers; Silicon;
Conference_Titel :
Circuits and Systems, 1992. ISCAS '92. Proceedings., 1992 IEEE International Symposium on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-0593-0
DOI :
10.1109/ISCAS.1992.230093
