New ELIN Systems Using CMOS Transistors in Weak Inversion Operation

Advances in Electrical and Computer Engineering

BOZOMITU, R. G. ; CEHAN, V..

关键词: CMOS;    ELIN;    filters;    linearity;    subthreshold operation;    transconductance;   

DOI  :  10.4316/AECE.2013.04017

学科分类：计算机科学（综合）

来源: Universitatea "Stefan cel Mare" din Suceava

【 摘 要 】

In this paper new ELIN systems implemented by using CMOS transistors in weak inversion operation are presented. The proposed systems exploit the exponential-law characteristics of the subthreshold CMOS transistors. New operational transconductance amplifiers in CMOS technology, providing elementary tanh and sinh/cosh functions with high accuracy are proposed. These elementary cells are used to design first order CMOS ELIN filters. For a bias current of 1A, the dynamic range of the predistorted input voltage is 220mVpp and the current consumption is about 20uA from a 3.3V supply voltage. The simulations performed in 0.18um CMOS technology confirm the theoretically obtained results.

【 授权许可】

Unknown