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A CMOS readout integrated circuit with wide dynamic range for a CNT bio-sensor array system

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6 Author(s)
Hyunjoong Lee ; Electr. Eng., Seoul Nat. Univ., Seoul, South Korea ; Hyongmin Lee ; Jong-Kwan Woo ; Sunkwon Kim
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We present a sensor readout integrated circuit for the CNT bio-sensor array, the heart of which is our low-power current-input continuous-time ΔΣ modulator that is capable of dynamic range extension. Experimental results show that the prototype chip, designed and fabricated in 0.18μm CMOS process, achieves a dynamic range of 87.746dB and has a readout rate of 160kHz, which guarantees 1k sample/s per each sensor. It consumes 8.94μW/cell considering the 16×10 sensors and its core area is 0.085mm2.

Published in:

Low Power Electronics and Design (ISLPED) 2011 International Symposium on

Date of Conference:

1-3 Aug. 2011