Patent ID: 11940404
Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 4:
5. A system for detecting molecules, the system comprising:
an array comprising:
a first read amplifier;
a first nanopore unit, the first nanopore unit comprising a first nanopore, a first sense electrode, a first counter electrode, and a first shield situated between the first sense electrode and the first counter electrode and coupled to an output of the first read amplifier;
a first shield driver coupled to the first shield;
a second read amplifier;
a second nanopore unit, the second nanopore unit comprising a second nanopore, a second sense electrode, a second counter electrode, and a second shield situated between the second sense electrode and the second counter electrode and coupled to an output of the second read amplifier;
a second shield driver coupled to the second shield;

drive circuitry coupled to the array;
a multiplexer, wherein a first input of the multiplexer is coupled to the first read amplifier and a second input of the multiplexer is coupled to the second read amplifier, and an output of the multiplexer is coupled to a digitizer; and
control logic coupled to the drive circuitry, to the digitizer, and to the multiplexer, wherein the control logic is configured to:
control at least one of the drive circuitry or the multiplexer to select the first nanopore unit, and
obtain a digitized signal from the digitizer, the digitized signal representing a current through the first nanopore.