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Voltage/Current-Mode Multifunction Filters Using One Current Feedback Amplifier and Grounded Capacitors
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Abstract
One configuration for realizing voltage-mode multifunction filters and another configuration for realizing current-mode multifunction filters using current feedback amplifiers (CFAs) are presented. The proposed voltage-mode circuit exhibit simultaneously lowpass and bandpass filters. The proposed current-mode circuit exhibit simultaneously lowpass, bandpass and highpass filters. The proposed circuits offer the following features: no requirements for component matching conditions; low active and passive sensitivities; employing only grounded capacitors and the ability to obtain multifunction filters from the same circuit configuration.
KeywordsCurrent Feedback AmplifierActive FilterVoltage-ModeCurrent-Mode
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