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An integrated amperometric instrumentation system with on-chip electrodes for biosensor arrays is presented. The mixed-signal integrated circuit supports a variety of electrochemical measurement techniques including linear sweep, constant potential, cyclic and pulse voltammetry. Implemented in 0.5 μm CMOS, the 3×3 mm2 chip dissipates 22.5 mW for a 200 kHz clock. The highly programmable chip provides...
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