Low-sensitivity current-mode active-RC filters using impedance tapering

—This paper is concerned with a new design method of low-sensitivity current-mode filters, which results from lowsensitivity voltage-mode filter design using impedance tapering. The current–mode filters are obtained by application of a network transposition to their voltage-mode counterparts, in which the passive-RC network remains the same, and both filters are expected to have identical sensitivity properties. However, current–mode filters may be easier to realize in IC form and are expected to have higher bandwidths, greater linearity and wider dynamic range than the voltage-mode filters. In this paper, the 2nd-order class-4 current–mode filters (with positive feedback) will be considered. Design procedures will be given for the design of low-sensitivity lowpass (LP), high-pass (HP), band-pass (BP) and band-rejection (BR) filters, which are all realizable in class-4. A sensitivity analysis is examined using PSpice Monte Carlo runs.

• Type: Conference
• Year: 2005
• Where: ISCAS
• Authors: Drazen Jurisic, Neven Mijat, George S. Moschytz
• Keywords: Current–mode Filters, ISCAS 2005, Low-sensitivity Current-mode Filters, Voltage-mode Filters