Lossless Grounded Capacitance Multiplier Based On Two CFOAs

Öz

A new lossless grounded capacitance multiplier (GCM) based on two current-feedback operational amplifiers (CFOAs) is proposed. The proposed circuit is built with a least number of passive elements. The capacitor is selected as grounded in the proposed circuit, while one resistor is grounded and the other is floating. The proposed GCM has low power consumption and a very large multiplying factor. The passive element matching conditions are not necessary for the designed GCM. The SPICE program is used for the simulations, and all the simulations are performed with 0.18µm CMOS technology parameters. The simulation results verify the ideal results from 10Hz to 15MHz. Further, the designed GCM is tested in the application circuit, which is a second-order passive filter. The experiments of the desgined GCM are achieved by using AD844s instead of CFOAs.

Anahtar Kelimeler

• Grounded capacitance multiplier
• CFOA
• AD844
• current mode
• lossless

Kaynakça

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