A 0.18&amp;#x00B5;m CMOS switched-capacitor amplifier using current-starving inverter based op-amp for low-power biosensor applications

Selby, R.; Kern, Thorsten A.; Wilson, William; Chen, T.

doi:10.1109/lascas.2013.6519039

Cited by 4 publications

(2 citation statements)

References 15 publications

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“…The second amplifier design was presented in Selby et al 49 This amplifier was adopted in biosensor applications. According to this application, the gain and the accuracy are the two most important parameters while the required bandwidth is small (typically 1 kHz).…”

Section: Review On the Design Of Inverter-based Amplifiersmentioning

confidence: 99%

Design of the CMOS inverter‐based amplifier: A quantitative approach

Sharroush

2019

Circuit Theory & Apps

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The CMOS inverter can be used as an amplifier if properly biased in the transition region of its voltage-transfer characteristics (VTC). In this paper, the design of this amplifier is investigated with its merits and demerits illustrated and with the various trade-offs involved in its design discussed. Specifically, the following performance metrics are discussed quantitatively: gain, area, linearity, maximum allowable swing, bandwidth, stability, noise factor, impedance matching, and slew rate. Also, the effect of process, voltage, and temperature (PVT) variations are investigated. The optimum number of stages corresponding to the minimum area required for achieving a certain voltage gain is determined. The results obtained from the quantitative analysis and the simulation are discussed.

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Section: Review On the Design Of Inverter-based Amplifiersmentioning

confidence: 99%

Design of the CMOS inverter‐based amplifier: A quantitative approach

Sharroush

2019

Circuit Theory & Apps

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show abstract

“…Normally, the applied excitation voltage is quite small (less than 20 mV) for the impedance-based biosensor. 16 This is because the current to voltage relationship is usually linear only for small disturbance, and only in this situation impedance is strictly defined. Furthermore, this can avoid disturbing the biomolecular probe layer as the probe covalent bond energies are on the order of 1 -3 eV but the probe-target binding energies can be much less, and applied voltages will apply a force on charged molecules.…”

Section: 𝑌(𝜔)|mentioning

confidence: 99%

A Low-Voltage and Label-Free Impedance-Based Miniaturized CMOS Biosensor for DNA Detection

2014

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This study designs a low-voltage, label-free and fully integrated impedance-based biosensor using standard complementary metal oxide semiconductor (CMOS) technology to compute both capacitance and resistance of the electrode-electrolyte interface. The proposed biosensor circuit is composed of a common-gate transimpedance amplifier (CG-TIA) with two quadrature phase Gilbert cell double-balanced mixers and finally integrated with microelectrode using 0.18 µm Silterra CMOS technology process. The output value of the readout circuit was used to estimate the magnitude and phase of the measured admittance. The developed CG-TIA can achieve a gain of 88.6 dB up to a frequency of 50 MHz. The overall dynamic range was approximately 116 dB.

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A 2nd Order CMOS Sigma-Delta Modulator Design Suitable for Low-Power Biosensor Applications

Selby

2014

Biomedical Engineering Systems and Technologies

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A 0.18µm CMOS switched-capacitor amplifier using current-starving inverter based op-amp for low-power biosensor applications

Cited by 4 publications

References 15 publications

Design of the CMOS inverter‐based amplifier: A quantitative approach

Design of the CMOS inverter‐based amplifier: A quantitative approach

A Low-Voltage and Label-Free Impedance-Based Miniaturized CMOS Biosensor for DNA Detection

A 2nd Order CMOS Sigma-Delta Modulator Design Suitable for Low-Power Biosensor Applications

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