Double Differential Blocks Based Frequency Compensation: A Four-Stage CMOS Amplifier

Author:

Sanaei Ali Mohammad1,Biabanifard Ali2,Khadem Mohammad Saeed3,Aghaee Toktam4ORCID

Affiliation:

1. Department of Electrical and Electronics Engineering, Shahid Beheshti University, 1983969411, Tehran, Iran

2. Department of Electrical and Electronics Engineering, K. N. Toosi University, Tehran, Iran

3. Department of Electrical and Electronic Engineering, Science and Research Branch, Islamic Azad University of Ashtian, Ashtian, Iran

4. Department of Electrical and Electronics Engineering, Semnan University, Semnan, Iran

Abstract

In this paper, an efficient frequency compensation method is investigated for a four-stage CMOS amplifier. The frequency compensation network includes two sets of capacitors at the differential block output. The proposed compensated amplifier is described symbolically to obtain the transfer function. Meanwhile, the proposed configuration is designed at the circuit level and is simulated via 0.18[Formula: see text][Formula: see text]m CMOS technology. Compared to the other existing methods, the proposed amplifier satisfies the figure of merits considerably. This stems from the fact that lower capacitor values are used to perform compensation, leading to lower die occupation, and reach boosted gain bandwidth products. Leveraging both the configuration and design procedure, a high-performance four-stage is presented in this paper.

Publisher

World Scientific Pub Co Pte Ltd

Subject

Electrical and Electronic Engineering,Hardware and Architecture,Electrical and Electronic Engineering,Hardware and Architecture

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