Programmable current mode circuits

Abstract

The paper presents a new concept of switched transconductor (ST) circuits based on the application of operational amplifiers with adjustable transconductance. It is proved that in the delay circuits proposed, one can electronically adjust its amplification, which was not possible with SI 1st and 2nd generation circuits. For the purpose of verification of the concept, a simple adjustable transconductance amplifier was designed. Simulations of delay circuits were carried out to prove the legitimacy of the concept.