Bulk linearized CMOS differential pair transconductor for continuous-time OTA-C filter design

Bulletin of the Polish Academy of Sciences. Technical Sciences

B. PankiewiczCorresponding authorDepartment of Microelectronic Systems, Gda?sk University of Technology, 11/12 Narutowicza St., 80-233 Gda?sk, PolandEmailOther articles by this author:De Gruyter OnlineGoogle Scholar¹  M. WójcikowskiDepartment of Microelectronic Systems, Gda?sk University of Technology, 11/12 Narutowicza St., 80-233 Gda?sk, PolandOther articles by this author:De Gruyter OnlineGoogle Scholar¹  S. Szczepa?skiDepartment of Microelectronic Systems, Gda?sk University of Technology, 11/12 Narutowicza St., 80-233 Gda?sk, PolandOther articles by this author:De Gruyter OnlineGoogle Scholar¹ 

[1] Department of Microelectronic Systems, Gda?sk University of Technology, 11/12 Narutowicza St., 80-233 Gda?sk, Poland

关键词: Keywords : transconductance amplifier;    OTA;    bulk-driven amplifier;    OTA-C filter;   

DOI  :  10.2478/bpasts-2014-0009

学科分类：工程和技术（综合）

来源: Polska Akademia Nauk * Centrum Upowszechniania Nauki / Polish Academy of Sciences, Center for the Advancement of Science

【 摘 要 】

In this paper, the MOS differential pair driven simultaneously from gates and bulk terminals is described. An approximated analytical solution of the voltage to current transfer function has been found for the proposed circuit. Four possible combinations of gate and bulk connections of the input signal are presented. Basing on the configuration giving the best linearity, the operational transconductance amplifier (OTA) has been designed and compared, by computer simulations, to the amplifier utilizing the gate driven classic MOS pair. 3rd order filters using the OTAs with linearized and simple MOS pair have been designed and the resulting parameters have been compared. Linearization through the presented simultaneous use of gate and bulk terminals seems to be useful for low voltage applications.

【 授权许可】

Unknown