Alireza Ghorbani

  Current-Mode processing has attracted great attention in recent decades. Current –Mode circuits are distinguished from voltage-mod ones in two main criteria; 1) Instead of voltage, they process current signals as the main variable and data. 2) Ideally there should be no high impedance nodes in their signal paths.

  In this thesis the current operational amplifier are introduced and their important specifications are noted. Moreover an overall review is performed on the researches that dealt with improvement in specification of this block. In this thesis various methods are proposed to improve the specification of current operational amplifier which any one is introduced to improve some of the current operational amplifier specifications. Designing of the current output stage with ultra high output impedance (13GΩ) , ultra low power consomptions (86µW) and a current follower with very low input resistance (38mΩ) , low power consomptions (145µW) and high CMRR (110dB) are some of the results of this thesis. HSPICE simulator is used to perform simulation and the simulation results are given to prove the validity of works.

 Sunday 6^th February 2011,Time:13:00

 Seminar room, first floor, electrical and electronic engineering faculty,

 Iran university of science and technology (IUST)