Back to results
US 8,409,867 B2Granted
Ultra low-power CMOS based bio-sensor circuit
AssigneeInternational Business Machines Corporation
InventorsAditya Bansal, Sufi Zafar
Life of this patent
Estimating the term…
Abstract
An apparatus configured to identify a material having an electric charge, the apparatus having: an inverting gain amplifier including a first field-effect transistor (FET) coupled to a second FET; wherein a gate of the first FET is configured to sense the electric charge and an output of the amplifier provides a measurement of the electric charge to identify the material.
Claims8
A method for identifying a material having an electric charge, the method comprising:
- sensing the electric charge with an array of sensor cells, each of the sensors cells including a gate surface material configured to cause the sensor cell to produce a signal based on the electric charge of the material, each sensor cell including a first field effect transistor (FET) and a second FET, the first FET and a second FET forming an inverting gain amplifier circuit having an output that provides the signal;
- and
- measuring the signal produced by each of the sensor cells by utilizing a row select circuit and column multiplexing circuit to identify the material, wherein the row select circuit selects a signal present between two transistors of an inverting amplifier.
Dependencies are inferred from the claim text.