Biosensor device and related method
AssigneeTaiwan Semiconductor Manufacturing Company, Ltd.
InventorsJui-Cheng Huang, Chin-Hua Wen, Tung-Tsun Chen
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Abstract
One or more circuit arrangements for a biosensor are provided. A circuit arrangement includes an ion sensitive sensor, a differentiator electrically connected to the ion sensitive sensor, an AC signal level comparator electrically connected to the differentiator and a decision circuit electrically connected to the AC signal level comparator. In some embodiments, the AC signal level comparator includes at least one of a first comparator or a second comparator. A method of detecting a bio-reaction is also provided.
Claims20
A circuit arrangement comprising:
- an ion sensitive sensor;
- a differentiator electrically connected to the ion sensitive sensor;
- an AC signal level comparator electrically connected to the differentiator;
- and
- a decision circuit electrically connected to the AC signal level comparator.
A circuit arrangement comprising:
- a ion sensitive sensor;
- a differentiator electrically connected to the ion sensitive sensor;
- an AC signal level comparator electrically connected to the differentiator, the AC signal level comparator comprising:
- a first comparator;
- and
- a decision circuit electrically connected to the AC signal level comparator, the decision circuit comprising:
- a nand gate.
A method comprising:
- contacting a biosensor with a biological material;
- sensing a response of the biosensor to the biological material by a ion sensitive sensor;
- detecting a signal indicative of the response;
- differentiating the signal;
- comparing the signal to a reference signal;
- and
- determining if there is a bio-reaction based upon the comparison.
Dependencies are inferred from the claim text.