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- Title
Current-Mode Universal Biquad Using Current Followers: A Minimal Realization.
- Authors
Senani, R.; Gupta, S. S.
- Abstract
A new universal biquad filter is presented which employs a minimum number of active elements (only three current followers (CF)) along with a minimum number of passive components (i.e. only two resistors and two capacitors). The new circuit provides all the five standard filter responses (namely lowpass, bandpass, highpass, notch and allpass) from the same structure without requiring any component matching conditions and with explicit current outputs available from high output impedance terminals. The workability of the proposed universal biquad, realized with unity-gain current followers implemented in 0.35 µm CMOS and operated from 1.65 volts DC power supplies, is established by SPICE simulations.
- Subjects
DIGITAL filters (Mathematics); CAPACITORS; ELECTRONIC circuits; COMPUTER simulation; BANDPASS filters; ELECTRONIC structure
- Publication
Radioengineering, 2011, Vol 20, Issue 4, p898
- ISSN
1210-2512
- Publication type
Article