Multiple output CMOS current amplifier

Bulletin of the Polish Academy of Sciences. Technical Sciences

B. PankiewiczFaculty of Electronics, Telecommunications and Informatics, Gda?sk University of Technology, 11/12 Narutowicza St., 80-233 Gda?sk, PolandEmailOther articles by this author:De Gruyter OnlineGoogle Scholar¹ 

[1] Faculty of Electronics, Telecommunications and Informatics, Gda?sk University of Technology, 11/12 Narutowicza St., 80-233 Gda?sk, Poland

关键词: Keywords: current amplifier;    current follower;    current mirror;    CMOS technology;   

DOI  :  10.1515/bpasts-2016-0034

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 multiple output current amplifier basic cell is proposed. The triple output current mirror and current follower circuit are described in detail. The cell consists of a split nMOS differential pair and accompanying biasing current sources. It is suitable for low voltage operation and exhibits highly linear DC response. Through cell devices scaling, not only unity, but also any current gains are achievable. As examples, a current amplifier and bandpass biquad section designed in CMOS TSMC 90nm technology are presented. The current amplifier is powered from a 1.2V supply. MOS transistors scaling was chosen to obtain output gains equal to -2, 1 and 2. Simulated real gains are -1.941, 0.966 and 1.932 respectively. The 3dB passband obtained is above 20MHz, while current consumption is independent of input and output currents and is only 7.77μA. The bandpass biquad section utilises the previously presented amplifier, two capacitors and one resistor, and has a Q factor equal to 4 and pole frequency equal to 100 kHz.

【 授权许可】

Unknown