Please use this identifier to cite or link to this item:
https://hdl.handle.net/11499/56809
Title: | Voltage-Mode Multifunction and Universal Biquads with Two CFOAs | Authors: | Doğan, Mehmet Yüce, Erkan Dicle, Zafer |
Keywords: | Second-order voltage-mode multifunction filter universal filter CFOA Current-Feedback Amplifier Oscillators Filters |
Publisher: | World Scientific Publ Co Pte Ltd | Abstract: | In this paper, a new voltage-mode (VM) multifunction filter including only two grounded capacitors, three resistors, and two current feedback operational amplifiers is introduced. This filter with one high input impedance and two low output impedances can simultaneously provide band-pass filter (BPF) and low-pass filter (LPF) responses with an adjustable gain. A universal VM filter topology with three inputs and one output generating high-pass filter (HPF), BPF, LPF, notch filter, and all-pass filter (APF) responses is obtained from the multifunction one. It has the same number of active and passive elements as the multifunction and a low output impedance. Sensitivities of both introduced filters are low enough. However, the APF of the introduced universal filter has a passive element-matching problem. As an example, parasitic impedance effects are considered for the LPF of the universal filter, while non-ideal gain analyses are given for the HPF. To see how the introduced universal filter works, countless simulations are performed through the SPICE (Simulation Program with Integrated Circuit Emphasis) program in which 0.13 mu m IBM CMOS technology parameters are utilized. DC supply voltages are selected as +/- 0.9 V. Also, several experiments using commercially available AD844s with +/- 10 V supply voltages are carried out to see the performance. | URI: | https://doi.org/10.1142/S0218126624501962 https://hdl.handle.net/11499/56809 |
ISSN: | 0218-1266 1793-6454 |
Appears in Collections: | Mühendislik Fakültesi Koleksiyonu Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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