Title :
Euler differentiator with reduced channel length modulation
Author :
Chen, Cheng-Chi ; Chen, Jian-Jia ; Tsao, Hen-Wai ; Liu, Shen-Iuan
Author_Institution :
Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
A new design method for the Euler differentiator using the MOSFET switched-current technique with reduced channel length modulation effect is proposed. The realisation of these circuits requires only current mirrors, voltage-to-current convertors, and analogue switches. Because the input terminal of this differentiator is a virtual ground, signal processing circuits which have cascade structures can be easily implemented. A 4th-order lowpass filter is designed to demonstrate the performance of this differentiator. Simulation results which agree well with the theoretical analysis have been obtained.
Keywords :
active filters; differentiating circuits; field effect transistor circuits; low-pass filters; modulation; switched filters; switched networks; 4th-order lowpass filter; Euler differentiator; MOSFET switched-current technique; analogue switches; cascade structures; channel length modulation; current mirrors; current scaler circuit; design method; signal processing circuits;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19920263
