Novel architecture of four quadrant analog multiplier/divider circuit employing single CFOA

In this communication, a current feedback operational amplifier (CFOA) based novel architecture of voltage-mode analog multiplier/divider circuit has been proposed. The proposed circuit employs a single CFOA and four MOSFETs. The multiplier circuit can operate in four quadrant modes, whereas, the di...

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Bibliographic Details
Published in:Analog integrated circuits and signal processing 2021-09, Vol.108 (3), p.689-701
Main Authors: Raj, Ajishek, Bhaskar, Data Ram, Kumar, Pragati
Format: Article
Language:English
Subjects:
Analog circuits
Circuits
Circuits and Systems
CMOS
Current feedback amplifiers
Dividers
Electric potential
Electrical Engineering
Engineering
Frequency doublers
Mixed Signal Letter
Monte Carlo simulation
MOSFETs
Noise
Operational amplifiers
Quadrants
Signal,Image and Speech Processing
Temperature analysis
Voltage
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Summary:In this communication, a current feedback operational amplifier (CFOA) based novel architecture of voltage-mode analog multiplier/divider circuit has been proposed. The proposed circuit employs a single CFOA and four MOSFETs. The multiplier circuit can operate in four quadrant modes, whereas, the divider circuit can operate in two quadrant modes. The applications of the proposed multiplier circuit in amplitude modulator, squarer, and frequency doubler circuit have also been presented. To check the robustness of the proposed circuit, mismatch analysis, process corner-voltage-temperature analysis, and Monte-Carlo simulations have been performed. Noise analysis has also been carried out and the output noise for multiplier and divider circuits are found to be below 0.28 μV /sqrt(Hz). The presented circuit has been simulated with CMOS CFOA implemented using 0.18 μm TSMC technology parameters.
ISSN:0925-1030
1573-1979
DOI:10.1007/s10470-021-01915-x