| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an IC chip provided with a plurality of working electrodes which can perform desired electrochemical measurement in a plurality of measurement points in a short period of time according to each of the measurement points, and cause an electrochemical reaction due to a minute electric signal by using an arbitrary working electrode out of the plurality of working electrodes or can detect a detection signal even when it is the detection signal whose movement of charges associated with the electrochemical reaction is minute. <P>SOLUTION: In an IC chip 10, a switch group 12, an operational amplifier 13 connected to the switch group 12, and a capacitor 17 connected between one input terminal and an output terminal of the operational amplifier 13 are provided on each of working electrodes 11. The switch group 12 switches among an offset voltage measuring mode of measuring an offset voltage of the operational amplifier 13, a mode of measuring a potential of the working electrode 11, a mode of measuring an electric current passing when the working electrode 11 is set to a predetermined potential, and a mode of measuring an electric current passing through the working electrode 11 when the working electrode 11 is set to an offset potential rather than the predetermined potential. <P>COPYRIGHT: (C)2013,JPO&INPIT |
