In the paper, the electrochemical sensor consists of the potantiostat with glucose test strip electrode and the automatic test system to readout the electronic signal related to the concentration of Glucose is propose...
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In the paper, the electrochemical sensor consists of the potantiostat with glucose test strip electrode and the automatic test system to readout the electronic signal related to the concentration of Glucose is propose...
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In the paper, the electrochemical sensor consists of the potantiostat with glucose test strip electrode and the automatic test system to readout the electronic signal related to the concentration of Glucose is proposed. The structure of an Op-based potentiostat is improved, analyzed, and implemented. The working operations are very complicated, and having some processing property. These performances will directly influence to oxidation-reduction reaction through the cyclic voltammetry bounded from 0.4V to -1.4V is added on the three-electrode. The readout circuit of potentiostat is successfully designed and simulated by HSPICE. The readout data is automatically accessed by the NI DAQ card and the coordinated Labview programming the test schedule to control the related instrumentation with GPIP to obtain the experiment result for various glucose concentrations. The glucose detection system associated with the improved Op-based potentiostat and an automatic test system is realized. The objective of this paper was to investigate the improved OP-based three-electrode potentiostat used in electrochemical glucose biosensor system to obtain the measurement results with high-linearity response. The experiment result show that the potentiostat is produced more linearity output range of voltage from 4.4V to 0.6V corresponding to the measured concentration of glucose due to 50-600mg/dl, respectively. The architecture of the potentiostat can be intergraded for VLSI design. There have a great potential in the biological detection system for the health-care and bio-medicine applications.
A cubic function generator is an essential component in TCXOs to compensate for the frequency variation of quartz resonators during temperature change. The authors present a fully analog CMOS cubic function generator ...
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A cubic function generator is an essential component in TCXOs to compensate for the frequency variation of quartz resonators during temperature change. The authors present a fully analog CMOS cubic function generator circuit. It is composed of analog variable gain amplifiers and a voltage adder. The circuit generates an exact cubic function that represents a quartz resonator's frequency versus temperature characteristic. Adjusting the parameters of the cubic wave and adding the higher order terms for more precise control can be done easily in this design. The design is implemented and fabricated in TSMC 0.35 μm technology.
This paper reports progress on a frame enclosed resonator (FER) integrated with a miniature OCXO. This new approach for a quartz crystal resonator with small active area and low stress was fabricated and directly inte...
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This paper reports progress on a frame enclosed resonator (FER) integrated with a miniature OCXO. This new approach for a quartz crystal resonator with small active area and low stress was fabricated and directly integrated between a CMOS control chip as a sandwich structure. Integrating an FER on a CMOS chip provides a number of advantages including small size, low power, and reduced warm up time due to smaller volume and surface area
This paper presents a one-chip temperature control for an OCXO application with a quartz crystal directly mounted on a CMOS chip. The design of this chip can reduce the size of an entire OCXO package dramatically sinc...
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This paper presents a one-chip temperature control for an OCXO application with a quartz crystal directly mounted on a CMOS chip. The design of this chip can reduce the size of an entire OCXO package dramatically since no separate PCBs are required for the oscillator, controller, and resonator. The reduced package size leads to less power consumption (303 mW at steady state) and a shorter warm-up time (190 seconds at room temperature). The temperature and frequency stabilities are 0.17 degC and 0.7 ppm respectively in the 0 degC to 60 degC external temperature range
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