A Review On: Linearization Technique for Operational Transconductance Amplifier

Transconductors are basic building blocks found in many analog signal processing circuits such as continuous time filters, voltage controlled oscillators and current sensing circuits. Linearity is a crucial factor in designing transconductor. Several methods are adopted to improve the linearity of the transconductor. One of the method that is used to improve the linearity of the tranconductor is source degeneration. An improved performance can be observed when a degenerated auxiliary differential pair is used to drive the bulk of main differential pair, which reduces distortion and increases the linear input range of a differential pair with source degeneration