Patent ID: 11913988
Assignee: QUALCOMM TECHNOLOGIES, INC.
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 11:
12. The method of claim 9, wherein the plurality of amplifier input terminals include an inverting input terminal and a non-inverting input terminal, and a first transducer output is coupled to the inverting input terminal, and a second transducer output is coupled to the non-inverting input terminal, and the charge amplifier is configured in a differential mode with: a first feedback network electrically coupled between the amplifier output and the inverting input terminal; and a second feedback network electrically coupled between the amplifier output and the non-inverting input terminal; and a bias resistor electrically coupled between a bias voltage source and the non-inverting input terminal; and the system also includes: a verification switch electrically coupled in parallel with the bias resistor, the verification switch controllably configurable into an open configuration and a closed configuration, and the method further comprises: in a verification mode, controlling the verification switch into a closed position to couple the bias voltage source to the non-inverting input terminal; and determining that the method for testing a system is functioning correctly by comparing the amplifier output signal to a pre-determined verification threshold and determining that the amplifier output signal exceeds the pre-determined verification threshold.