Low voltage, high CMRR, and wide bandwidth novel current mode current controlled instrumentation amplifier
| Autor: | Mustapha Alami, Zineb M'harzi, Farid Temcamani |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Engineering
Current-feedback operational amplifier business.industry 020208 electrical & electronic engineering Electrical engineering 020206 networking & telecommunications 02 engineering and technology Fully differential amplifier Surfaces Coatings and Films law.invention Common-mode rejection ratio Hardware and Architecture law Operational transconductance amplifier Signal Processing Current conveyor Hardware_INTEGRATEDCIRCUITS 0202 electrical engineering electronic engineering information engineering Electronic engineering Operational amplifier Instrumentation amplifier business Direct-coupled amplifier |
| Zdroj: | Analog Integrated Circuits and Signal Processing. 90:199-205 |
| ISSN: | 1573-1979 0925-1030 |
| DOI: | 10.1007/s10470-016-0873-3 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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