Simple CMOS square wave generator with variable mode output

Predrag Bosko Petrovic

Abstract


A novel square-wave generator based on a single CCCII (current controlled conveyor), with only two external grounded passive components is proposed in this paper. The circuit provides precise, electronic controllable, voltage or current output square-wave signals. The simulation results using 0.18mm CMOS parameters and experimental verification confirm the feasibility of the proposed circuit. The proposed generator can operate very well up to 25MHz with nonlinearity less than 5%.

Keywords


Square-wave generator, CCCII, variable mode output, electronically controllable, simulation, experimental results

Full Text:

PDF

References


. Tocci, R. J., Widmer, N., Moss, G.(2014). Digital systems: principles and applications, Pearson Education Limited, UK.

. Zhu, C., Wang, C., Chen, H., Zhang, X., Sun, J., Du, S.A.(2018). Novel CMOS CCCII with Wide Tunable Rx and Its Application. Journal of Circuits, Systems, and Computers, 27 (13), 20 pages, DOI: 10.1142/S0218126618501980

. Bhartendu, C., Kumar, A.(2018). Fully Electronically Tunable and Easily Cascadable Square/Triangular Wave Generator with Duty Cycle Adjustment. Journal of Circuits, Systems and Computers, DOI: 10.1142/S0218126619501056

. Ashish, R., Pamu, H., Tarunkumar, H.(2018). A novel Schmitt trigger and its application using a single four terminal floating nullor (FTFN). Analog Integrated Circuits and Signal Processing, 96 (3), 455-467

. Chien, H. C.(2012). Voltage-controlled dual slope operation square/triangular wave generator and its application as a dual mode operation pulse width modulator employing differential voltage current conveyors. Microelectron. J., 43 (12), 962–974.

. Ranjan, R. K., Mazumdar, V., Pal, R., Chandra, S.(2017). Generation of square and triangular wave with independently controllable frequency and amplitude using OTAs only and its application in PWM. Analog Integrated Circuits and Signal Processing., 92 (1), 15-27, DOI: 10.1007/s10470-017-0971-x.

. Chien, H. C. (2014). A current-/voltage-controlled four-slope operation square-/triangular-wave generator and a dual-mode pulse width modulation signal generator employing currentfeedback operational amplifiers. Microelectronics Journal. 45, 634-647.

. Pal, D., Srinivasulu, A., Pal, B.B., Demosthenous, A., Das, M.N. (2009). Current conveyor based square/triangular waveform generators with improved linearity. IEEE Transactions on Instrument and Measurement, 58, 2174-2180.

. Silapan, P., Siripruchyanun, M. (2011). Fully and electronically controllable current-mode Schmitt triggers employing only single MO-CCCDTA and their applications. Analog Integrated Circuits and Signal Processing, 68, 111-128.

. Sotner, R., Jerabek, J., Herencsar, N., Dostal, T., Vrba, K. (2015). Design of Z-copy controlledgain voltage differencing current conveyor based adjustable functional generator. Microelectronics Journal, 46, 143-152.

. Lo, Y.K., Chien, H.C. (2007). Switch-controllable OTRA-based square/triangular waveform generator. IEEE Transactions on Circuits and Systems II: Express Briefs, 12, 1110- 1114.

. Marcellis, A.De, Carlo, C. Di, Ferri, G., Stornelli, V. (2013). A CCII-based wide frequency range square waveform generator. International Journal of Circuit Theory and Applications, 41, 1-13.

. Kumar, A., Chaturvedi, B., Maheshwari, S. (2017). A fully electronically controllable Schmitt trigger and duty cycle‐modulated waveform generator. International Journal of Circuit Theory and Applications, 45, 2157-2180.

. Minaei, S., Yuce, E. (2012). A simple Schmitt trigger circuit with grounded passive components and its application to square/triangular wave generator. Circuits, Systems, and Signal Processing, 31, 877-888.

. Kumar, A., Chaturvedi, B. (2017). Single Active Element-Based Tunable Square/Triangular Wave Generator with Grounded Passive Components. Circuits, Systems, and Signal Processing, 36, 3875-3900.

. Cicekoglu, O., Kuntman, H. (1998). On the design of CCII+ based relaxation oscillator employing single passive element for linear period control,Microelectron. J., 29, 983–989.

. Chaisricharoen, R., Chipipop, B., Sirinaovakul, B. (2010). CMOS CCCII: Structures, characteristics, and considerations. Int. J. Electron. Commun. (AEÜ), 64 (6), 540–557




DOI: https://doi.org/10.33180/InfMIDEM2020.104

Refbacks

  • There are currently no refbacks.


Copyright (c) 2015 Predrag Bosko Petrovic

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.