Design of CMOS Instrumentation Amplifier

Ren, Mingyuan; Zhang, C.X.; Sun, Di

doi:10.1016/j.proeng.2012.01.615

Cited by 11 publications

(19 citation statements)

References 12 publications

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“…The circuit detects the potential difference between the two input signals using three operational amplifiers and amplifies the signals to generate output signals. Eventually, the amplification factor of the IA is determined by the ratio of R2 to R1 and the ratio of R4 to R3 [20]. In the present study, the IA was designed to have a gain factor of nearly 3800.…”

Section: Standard Instrumentation Amplifier Designmentioning

confidence: 99%

New Radiation-Hardened Design of a CMOS Instrumentation Amplifier and its Tolerant Characteristic Analysis

et al. 2020

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A radiation-hardened instrumentation amplifier (IA) that allows precise measurement in radiation environments, including nuclear power plants, space environments, and radiation therapy rooms, was designed and manufactured, and its characteristics were verified. Most electronic systems are currently designed using silicon-based complementary metal-oxide semiconductor (CMOS) integrated circuits (ICs) to achieve a highly integrated low-power design. However, fixed charges induced in silicon by ionization radiation cause various negative effects, resulting in, for example, the generation of leakage current in circuits, performance degradation, and malfunction. Given that such problems in radiation environments may directly lead to a loss of life or environmental contamination, it is critical to implement radiation-hardened CMOS IC technology. In this study, an IA used to amplify fine signals of the sensors was designed and fabricated in the 0.18 μm CMOS bulk process. The IA contained sub-circuits that ensured the stable voltage supply needed to implement system-on-chip (SoC) solutions. It was also equipped with special radiation-hardening technology by applying an I-gate n-MOSFET that blocks the radiation-induced leakage currents. Its ICs were verified to provide the intended performance following a total cumulative dose of up to 25 kGy(Si), ensuring its safety in radiation environments.

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Section: Standard Instrumentation Amplifier Designmentioning

confidence: 99%

New Radiation-Hardened Design of a CMOS Instrumentation Amplifier and its Tolerant Characteristic Analysis

et al. 2020

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“…The details of available IAs are comprehended in Table 1 and following points are observed: † Most of the available IAs [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25] can process data sensed by voltage sensor but need current to voltage converter for processing current sensors' data. † The IAs [6,[26][27][28][29] are suitable to process data available from current sensor and provide current [26,29] and voltage outputs [6,27,28].…”

Section: Introductionmentioning

confidence: 99%

“…† The IAs may be categorised as voltage mode (VM), current mode (CM), transadmittance mode (TAM) and transimpedance mode (TIM) on the basis of input and output signals. Accordingly the IAs presented in [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25], [17], [26][27][28][29] and [6,27,28] are VM, TAM, CM and TIM IAs, respectively. † Though the input impedance of VM topologies [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25] is high, the output is not available at low impedance [6, 12-14, 16-18, 21, 22...…”

Section: Introductionmentioning

confidence: 99%

“…The application areas of IA include medical instrumentation [1, 2], sensor read out integrated circuits [3] and data acquisition systems [4, 5]. Numerous IA have been presented in the literature [6–29] and are classified on the basis of active block employed for implementation. Conventionally the operational amplifier based IAs are termed as voltage mode IAs [7–11, 23, 25, 27] whereas current mode (CM) building block based IAs are referred as current mode IAs [6, 12–22, 24, 29].…”

Section: Introductionmentioning

confidence: 99%

“…The details of available IAs are comprehended in Table 1 and following points are observed: Most of the available IAs [6–25] can process data sensed by voltage sensor but need current to voltage converter for processing current sensors’ data. The IAs [6, 26–29] are suitable to process data available from current sensor and provide current [26, 29] and voltage outputs [6, 27, 28]. The IAs may be categorised as voltage mode (VM), current mode (CM), transadmittance mode (TAM) and transimpedance mode (TIM) on the basis of input and output signals.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Generalised operational floating current conveyor based instrumentation amplifier

Pandey

Nand

Pandey

2016

IET Circuits, Devices & Systems

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This paper proposes two generalised instrumentation amplifier topologies which can operate in voltage, current, transadmittance, and transimpedance mode. Each topology is a two stage structure, wherein an amplifier is used as first stage in the first topology and a converter is employed in the second one. The second stage is difference amplifier for both the structures. The theoretical proposition is verified through operational floating current conveyor (OFCC). The effect of non-idealities of OFCC on system performance, in particular finite transimpedance and tracking error, is also analysed and corresponding mathematical formulation is presented. The functional verification is performed through SPICE simulation using CMOS-based implementation of OFCC. The experimental results using current feedback operational amplifier-based OFCC implementation are also included which are in close agreement with theoretical and simulated results.

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