Current-to-voltage-converter for a biosensor

Details Current-to-voltage-converter for a biosensor Current-to-voltage-converter for a biosensor

2005-06-21

2005-06-21

Noguerola, Alex (Department: 1753)

Chemistry: electrical and wave energy

Apparatus

Electrolytic

C204S403140, C330S069000

Reexamination Certificate

active

06908535

ABSTRACT:
An integrated current-to-voltage conversion circuit converts a first current to an output voltage representative of the first current. The circuit includes a first contact pad and second and third contact pads capable of being coupled across a first resistor. A first operational amplifier has a first input coupled to the first contact pad for producing a first voltage thereat, a second input for receiving a reference voltage, and a first output coupled to the third contact pad. A second voltage appears at the third contact pad. A second operational amplifier has a second output at which a third voltage appears, a first input coupled to the second output, and a second input coupled to the second contact pad. The output voltage is substantially equal to the difference between the second and third voltages.

REFERENCES:
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patent: 03044570 (1991-02-01), None
“Capable” entry (p. 226) in Webster's II New Riverside University Dictionary, The Riverside Publishing Company, 1994.
Page 52 of Electric Circuits Fundamentals, Sergio Franco, Saunders College Publishing, Harcourt Brace College Publishers, 1995.
Chen O T-C et al: “A Medical Microsensor for Blood Glucose Monitoring” Circuits and Systems, 1997. ISCAS '97., Proceedings of 1997 IEEE International Symposium on Hong Kong Jun. 9-12, 1997, New York, NY, USA, IEEE, US. Jun. 9, 1997, pp. 2761-2764, XP010236301 ISBN: 0-7803-3583-X paragraph ′0002!—paragraph ′0004!; figures 2,6.

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