A new current mode building block named voltage and current gain second generation current conveyor (VCG-CCII) is introduced. The voltage and current buffers of the standard CCII are replaced by voltage and current amplifiers with tunable gains so to obtain an extremely flexible and versatile building block. The VCG-CCII can be used in place of the standard CCII in impedance conversion applications so to utilize only one active component. A circuit implementation in a standard 0.35 mu m CMOS process is presented and used to multiply, as an example, a 10 pF capacitor by a factor tunable from 1 up to about 3100, achieving a capacitance multiplication for more than 6 decades frequency range (from 0.15 to 865 KHz for the highest multiplication factor).
The VCG-CCII: a novel building block and its application to capacitance multiplication / A., De Marcellis; G., Ferri; N. C., Guerrini; Scotti, Giuseppe; V., Stornelli; Trifiletti, Alessandro. - In: ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING. - ISSN 0925-1030. - 58:1(2009), pp. 55-59. [10.1007/s10470-008-9213-6]
The VCG-CCII: a novel building block and its application to capacitance multiplication
SCOTTI, Giuseppe;TRIFILETTI, Alessandro
2009
Abstract
A new current mode building block named voltage and current gain second generation current conveyor (VCG-CCII) is introduced. The voltage and current buffers of the standard CCII are replaced by voltage and current amplifiers with tunable gains so to obtain an extremely flexible and versatile building block. The VCG-CCII can be used in place of the standard CCII in impedance conversion applications so to utilize only one active component. A circuit implementation in a standard 0.35 mu m CMOS process is presented and used to multiply, as an example, a 10 pF capacitor by a factor tunable from 1 up to about 3100, achieving a capacitance multiplication for more than 6 decades frequency range (from 0.15 to 865 KHz for the highest multiplication factor).I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
