IMPEDANCE MEASURING SEMICONDUCTOR CIRCUIT AND BLOOD-SUGAR LEVEL METER

The invention relates to an impedance measuring semiconductor circuit and a blood-sugar level meter. There is a need to provide an impedance measuring semiconductor circuit and a blood-sugar level meter capable of improving the accuracy of measuring the impedance of a specimen, reducing an area in an analog front-end LSI chip, and reducing the LSI chip size. According to an embodiment, the impedance measuring semiconductor circuit includes: an operational amplifier; a resistance coupled between a negative input terminal and an output terminal of the operational amplifier; a D/A converter coupled to a positive input terminal; a switch; an A/D converter that is coupled with the output terminal of the operational amplifier and a one-side terminal of a specimen and measures an output voltage from the operational amplifier and a one-side terminal voltage; and a controller that controls an output voltage from the D/A converter based on a one-side terminal voltage measured by the A/D converter. 本发明涉及一种阻抗测量半导体电路和血糖水平