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Abstract
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.
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- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1515/bpasts-2016-0034
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- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
Bulletin of the Polish Academy of Sciences-Technical Sciences
no. 64,
edition 2,
pages 301 - 306,
ISSN: 0239-7528 - Publication year:
- 2016
- Bibliographic description:
- Pankiewicz B.: Multiple output CMOS current amplifier// Bulletin of the Polish Academy of Sciences-Technical Sciences. -Vol. 64, iss. 2 (2016), s.301-306
- DOI:
- Digital Object Identifier (open in new tab) 10.1515/bpasts-2016-0034
- Verified by:
- Gdańsk University of Technology
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