A mixed-signal sensor interface microinstrument

Kraver, Keith L.; Guthaus, Matthew R.; Strong, T.D.; Bird, Peter L.; Sig, Geun; Höld, Wolfgang; Brown, Richard B.

doi:10.1016/s0924-4247(01)00596-9

Cited by 46 publications

(17 citation statements)

References 6 publications

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“…But, demands for increased functionality, reduced system size, reduced electrodes size, ultra-low current detection and versatility will force potentiostats to be designed on a system-on-chip (SoC) to be implemented in advanced CMOS processes. The scaled supply voltages in these processes (Kakerow et al, 1995;Kraver et al, 2001;Reay et al, 1994), however, seriously limit the chemical analysis range. The drive voltages of amperometric chemical sensors do not scale with electrode size, but are instead defined by the reduction/oxidation (redox) potentials of the analysis been investigated.…”

Section: The Potentiostat Amplifiermentioning

confidence: 99%

Portable Bio-Devices: Design of electrochemical instruments from miniaturized to implantable devices

Colomer‐Farrarons¹,

Miribel-Català²,

Rodríguez-Villarreal³

et al. 2011

New Perspectives in Biosensors Technology and Applications

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Section: The Potentiostat Amplifiermentioning

confidence: 99%

Portable Bio-Devices: Design of electrochemical instruments from miniaturized to implantable devices

Colomer‐Farrarons¹,

Miribel-Català²,

Rodríguez-Villarreal³

et al. 2011

New Perspectives in Biosensors Technology and Applications

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“…Low voltage switched capacitor circuits are considered a specific class of circuits often employed in analog signal processing as switched capacitor [61]. ( )…”

Section: Low Voltage Switched Capacitor Circuitsmentioning

confidence: 99%

CMOS Analog Front-End IC for Gas Sensors

Kim

Bakkaloglu²

2011

Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT)

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This thesis presents a gas sensor readout IC for amperometric and conductometric electrochemical sensors. The Analog Front-End (AFE) readout circuit enables tracking long term exposure to hazardous gas fumes in diesel and gasoline equipments, which may be correlated to diseases. Thus, the detection and discrimination of gases using microelectronic gas sensor system is required. This thesis describes the research, development, implementation and test of a small and portable based prototype platform for chemical gas sensors to enable a low-power and low noise gas detection system. The AFE reads out the outputs of eight conductometric sensor array and eight amperometric sensor arrays. The IC consists of a low noise potentiostat, and associated 9bit current-steering DAC for sensor stimulus, followed by the first order nested chopped Σ∆ ADC. The conductometric sensor uses a current driven approach for extracting conductance of the sensor depending on gas concentration. The amperometric sensor uses a potentiostat to apply constant voltage to the sensors and an I/V converter to measure current out of the sensor. The core area for the AFE is 2.65x0.95 mm 2 .The proposed system achieves 91 dB SNR at 1.32 mW quiescent power consumption per channel. With digital offset storage and nested chopping, the readout chain achieves 500 µV input referred offset.iii ACKNOWLEDGEMENTS

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“…In addition to using a low-power transduction method, many emerging low-power instruments employ low-power and lowvoltage interface and signal processing circuitry to minimize power dissipation [14]. The techniques utilized to achieve low power are similar to what is currently used to design low-power analog and digital circuits.…”

Section: Low-power Ic and System Designmentioning

confidence: 99%

Low-power micromachined microsystems

Najafi¹

2000

ISLPED'00: Proceedings of the 2000 International Symposium on Low Power Electronics and Design (Cat. No.00TH8514)

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Micromachined microsystems and Micro Electro Mechanical Systems (MEMS) have made possible the development of highly accurate and portable sensors and instrument for a variety of applications in the health care, industrial, consumer products, avionics, and defense. Design of low-power circuits for these applications, and use of micromachined sensors and actuators in combination with integrated circuits to implement even lower power microinstruments has now become possible and the focus of attention. This paper reviews the state of the art in the development of micromachined microsystems and MEMS, discusses low-power design approaches for microsystems, and reviews some recent development in power generation and energy harvesting from the environment.

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A mixed-signal sensor interface microinstrument

Cited by 46 publications

References 6 publications

Portable Bio-Devices: Design of electrochemical instruments from miniaturized to implantable devices

Portable Bio-Devices: Design of electrochemical instruments from miniaturized to implantable devices

CMOS Analog Front-End IC for Gas Sensors

Low-power micromachined microsystems

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