Low voltage, high CMRR, and wide bandwidth novel current mode current controlled instrumentation amplifier
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- 作者：Zineb M’harzi ; Mustapha Alami…
- 关键词：BiCMOS technology ; Common mode rejection ratio (CMRR) ; Current mode instrumentation amplifier (CMIA) ; Integrated circuit (IC) ; Second generation current controlled conveyor (CCCII) ; Voltage mode instrumentation amplifier (VMIA)
- 刊名：Analog Integrated Circuits and Signal Processing
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：90
- 期：1
- 页码：199-205
- 全文大小：
- 刊物类别：Engineering
- 刊物主题：Circuits and Systems; Electrical Engineering; Signal,Image and Speech Processing;
- 出版者：Springer US
- ISSN：1573-1979
- 卷排序：90
文摘
In this paper, a new current controlled instrumentation amplifier structure is proposed. The introduced circuit uses three current controlled conveyors and a single grounded resistor. This structure offers several enhanced advantages in comparison with other current and voltage modes instrumentation amplifiers. It provides attractive features such as: wide bandwidth independent to the differential gain, current tuned gain, high common mode rejection ratio without requiring matched resistors and low supply voltage equal to ±0.75 V. Accordingly, the proposed amplifier is a suitable element for integrated circuit implementation in the medical field. The used second-generation current controlled conveyor has a very simple structure. It is generally constituted of two NPN and seven CMOS transistors and it has numerous interesting characteristics. Theoretical analysis is carried out taking into consideration the non-ideality parameters of the conveyors. The circuit features are corroborated via a PSPICE simulation; the results are also compared to those of the previous structures presented in the literature.