Design of an Inverter-Based OTA Based on a 130 nm CMOS Process
DOI:
https://doi.org/10.33448/rsd-v9i6.3334Keywords:
Operational amplifiers; CMOS inverters; Differential transconductance; Threshold voltage; Mismatch.Abstract
In manufacturing processes of integrated differential amplifiers, an inherent characteristic is that the fabricated nMOS and pMOS transistors have physical differences in relation to the projected values, an effect known as mismatch. In this work, the manufacturing process variations in operational transconductance amplifiers (OTA) are evaluated. Two OTA based on CMOS inverters are designed using both low threshold and standard threshold uniformly doped transistors using quantitative experimental research.
References
Andreani, P., & Mattisson, S. (2002). On the use of Nauta’s transconductor in low-frequency CMOS gm-C bandpass filters. IEEE Journal of Solid-State Circuits, 37(2), 114–124.
Barthélemy, H.; Meillère, S.; Gaubert, J.; Dehaese, N.; Bourdel, S. (2008). OTA based on CMOS inverters and application in the design of tunable bandpass filter. Analog Integrated Circuits and Signal Processing, v. 57, n. 3, p. 169–178, 2008.
Braga, R. A., Ferreira, L. H., Colletta, G. D., & Dutra, O. O. (2019). A 0.25-V calibration-less inverter-based OTA for low-frequency Gm-C applications. Microelectronics Journal, 83, 62–72.
Braga, R. A., Ferreira, L. H., Colletta, G. D., & Dutra, O. O. (2017). Calibration-less Nauta OTA operating at 0.25-V power supply in a 130-nm digital CMOS process. In 2017 IEEE 8th Latin American Symposium on Circuits & Systems (LASCAS) (pp. 1–4).
Braga, R. A. S. (2018). Uma Topologia CMOS Nauta OTA sem Calibração em Ultra-Baixa Tensão e Ultra-Baixa Potência. Universidade Federal de Itajubá.
Crombez, P., Craninckx, J., Wambacq, P., & Steyaert, M. (2008). A 100-kHz to 20-MHz reconfigurable power-linearity optimized gm-C biquad in 0.13-µm CMOS. IEEE Transactions on Circuits and Systems II: Express Briefs, 55(3), 224–228.
Dresch, A., Lacerda, D. P., & Júnior, J. A. V. A. (2015). Design science research: método de pesquisa para avançoda ciência e tecnologia. Bookman Editora.
Munoz, F., Torralba, A., Carvajal, R., Tombs, J., & Ramirez Angulo, J. (2001). Floating-gate-based tunable CMOS low-voltage linear transconductor and its application to HF gm-C filter design. IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing, 48(1), 106–110.
Nauta, B. (1992). A CMOS transconductance-C filter technique for very high frequencies. IEEE Journal of Solid-State Circuits, 27(2), 142–153.
Nicholson, A. P., Iberzanov, A., Jenkins, J., Hamilton, T. J., & Lehmann, T. (2016). A statistical Design Approach for a Digitally Programmable Mismatch-Tolerant High-Speed Nauta Structure Differential OTA in 65- nm CMOS. IEEE Transactions on Very Large Scale Integration (VLSI) Systems, 24(9), 2899–2910.
Pereira, A.S. et al. (2018). Metodologia da pesquisa científica. [e-book]. Santa Maria. Ed. UAB/NTE/UFSM. Disponível em:
https://repositorio.ufsm.br/bitstream/handle/1/15824/Lic_Computacao_Metodologia-Pesquisa-Cientifica.pdf?sequence=1. Acesso em: 03 abr. 2020.
Pinto, P. M., Ferreira, L. H., Colletta, G. D., & Braga, R. A. (2019). A 0.25-V fifth-order butterworth low-pass filter based on fully differential difference transconductance amplifier architecture. Microelectronics Journal, 92, 104606.
Pirmohammadi, A., & Zarifi, M. H. (2012). A low power tunable Gm-C filter based on double CMOS inverters in 0.35-µm. Analog Integrated Circuits and Signal Processing, 71(3), 473–479.
Ramasamy, S., & Venkataramani, B. (2011). A low power reconfigurable analog baseband block for software defined radio. Journal of Signal Processing Systems, 62(2), 131–144.
Vlassis, S. (2012). 0.5V CMOS inverter-based tunable transconductor. Analog Integrated Circuits and Signal Processing, 72(1), 289
Downloads
Published
How to Cite
Issue
Section
License
Authors who publish with this journal agree to the following terms:
1) Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
2) Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
3) Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.
