A High-Sensitivity and Low-Power Circuit for the Measurement of Abnormal Blood Cell Levels
2019 ◽
Vol 29
(04)
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pp. 2050061
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This paper describes a technique to detect blood cell levels based on the time-period modulation of a relaxation oscillator loaded with an Inter-Digitated Capacitor (IDC). A digital readout circuit has been proposed to measure the time-period difference between the two oscillators loaded with samples of healthy and (potentially) unhealthy blood. A prototype circuit was designed in 65-nm CMOS technology and post-layout simulations show 15.25-aF sensitivity. The total circuit occupies 2,184-[Formula: see text]m2 silicon area and consumes 216[Formula: see text][Formula: see text]A from a 1-V power supply.
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2019 ◽
Vol 28
(07)
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pp. 1950110
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