本篇論文提出一顆可以配合使用電化學的電壓式與電流式分析方法來量測生化溶液濃度的整合晶片。電化學的分析形式選用循環伏安法(CV)與計時電位法(CP)兩種，實驗時電極採用三電極式的外接石墨電極。本晶片的輸入級為一電流導向數位類比轉換器，將數位輸入訊號轉成對應的類比訊號，來提供給電極與溶液使用，接著再經由量測電路轉換後輸出，最後再去分析這些訊號以量測溶液的濃度。此晶片所使用的製程是由台灣積體電路公司所提供的TSMC 0.35μm 2P4M製程，所使用之面積為1.65×1.71mm2，由量測的結果可知5V元件所使用的功率是5.66mW，而3.3V元件所消耗的功率為2.65 mW。經實驗證明，此晶片在兩種分析方式皆可量測出溶液濃度。

A chip to measure the solution concentration by using electro-chemical methods is proposed in this thesis. Cyclic voltammetry (CV) and chronopotentiometry (CP) are the two most common electrochemical analysis methods, and hence, they are chosen to verify the proposed chip. Three-electrode carbon screen-printed electrodes were used in the experiments. The input stage of the chip is a current-steering digital-to-analog converter, which is used to convert the digital input to its corresponding analog signals. Then, the signals is applied to the electrodes and solution, and the corresponding voltage or current signals are measured and outputted. Finally, the concentration of solution can be got by analyzing these output signals. The proposed chip was implemented by using the TSMC 0.35μm 2P4M CMOS process with a die area of 1.65 × 1.71 mm2. The power dissipation of the 5V-devices is 5.66mW, while that of the 3.3V-devices is 2.65mW. Accorrding to the experimental results, the concentration of solution indeed can be measured successfully by using the proposed chip.

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