Development of a CMOS frequency to voltage converter: doi: 10.14456/mijet.2020.9

Thirasak Phiangpranthong; Saweth Hongprasit

Authors

Thirasak Phiangpranthong Rajamangala University of Technology Isan Khon Kaen Campus
Saweth Hongprasit Rajamangala University of Technology Isan Khon Kaen Campus

Keywords:

frequency-to-voltage converter, logic controller, switched capacitor, FVC

Abstract

This article proposes a high performance frequency-to-voltage converter (FVC). The proposed circuit has a simple structure which consists of just only one current source, one Logic Controller Block (LCB), two capacitors and four MOS transistors to generate different phase shifts in time domain using the switched capacitor control technique. To validate the feasibility of the proposed circuit and its theoretical operation, the circuit has been simulated by using the PSpice simulation program. The proposed circuit provides the output voltage dependent on the input signal frequency which can operate in the wide range of frequencies varying from 2.5 to 125 MHz, as well as, providing the stable output voltage levels by the number of N of approximately 8 cycles of input signals with high accuracy of 0.4 %. The power consumption of the circuit is relatively low at about 0.25 mW at 5 V supply voltage.

Author Biographies

Thirasak Phiangpranthong, Rajamangala University of Technology Isan Khon Kaen Campus

Department of Electrical Engineering, Faculty of Engineering, Rajamangala University of Technology Isan Khon Kaen Campus, Khonkaen, Thailand, 40000

Corresponding Author: thirasak1702@gmail.com

Saweth Hongprasit, Rajamangala University of Technology Isan Khon Kaen Campus

Department of Computer Engineering, Faculty of Engineering, Rajamangala University of

Technology Isan Khon Kaen Campus, Khonkaen, Thailand, 40000

Corresponding Author: saweth12@gmail.com

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