Cmos Current-mode Integrator Anddifferentiator for Low Voltage and Low Power Applications

A new approach for CMOS Current-Mode Integrator (CMI) and Differentiator (CMD) realization are presented in this work. The proposed circuits are employed the inverter-based second-generation current conveyor (CCII). The CCII circuit achieves minimum number of stack transistors between the rail supply and class AB operation ability. Therefore, the proposed circuits are considered as low voltage and low power (LVLP) analog circuit. Moreover, the programmability of the proposed CMI and CMD can be realized using transconductance gain of the CMOS inverter. The CMOS inverter is characterized using a set of free hand equations, which are,modeled the CMOS inverteras analog device. The high input impedance of the CMOS inverter simplifies design of the op-amp since it is loaded only by capacitor. Second order filter is realized using the proposed CMI and CMD. The designed filter achieved independently center frequency (o) and quality factor (Q) tuning. The proposed circuits are designed and simulated using the MOST parameters of IBM 0.13μ CMOS technology.