TITLE:
New Integrators and Differentiators Using a MMCC
AUTHORS:
Palaniandavar Venkateswaran, Rabindranath Nandi, Sagarika Das
KEYWORDS:
Voltage-Controlled Oscillator; Multiplication Mode Current Conveyor (MMCC); Current Feedback Opamp (CFA); Quadrature Oscillator
JOURNAL NAME:
Circuits and Systems,
Vol.3 No.3,
June
25,
2012
ABSTRACT: Using the new building block Multiplication-Mode Current Conveyor (MMCC), some inverting/non-inverting type integrator and differentiator designs are presented, wherein the time constant (τ) is tuned electronically. The MMCC is implemented by a readily available chip-level configuration using a multiplier (ICL 8013) and a current feedback amplifier (AD-844 IC) CFA. Detailed analysis, taking into account the device non-idealities, had been carried out that indicates slight deviations affecting the values of the nominal time constant but the design is practically insensitive to the port mismatch errors (ε). Satisfactory response on wave conversion, for signal frequencies up to 600 Khz had been verified with both hardware circuit test and PSPICE macromodel simulation.