Device for differential acquistion of current and method of controlling such an acquisition device
AssigneeSafran Electronics & Defense
InventorsNicolas Geneste, Joel Vanoli, Francis Chaminadas
Life of this patent
Estimating the term…
Abstract
A device for the differential acquisition of current includes an acquisition circuit including a charge amplifier connected, at the input, to terminals for connection to a signal emitting component, and at the output, to an integrator. A unit for injecting a charge signal is mounted between the terminals and the charge amplifier and is connected to a control unit connected to an output of the acquisition circuit. The control unit is so arranged as to control the injection of a charge signal, to detect a resultant signal at the output of the acquisition circuit and to compare the resultant signal with the injected signal. A method includes controlling such a device.
Claims16
A device for the differential acquisition of current, comprising an acquisition circuit comprising a charge amplifier connected, at the input, to terminals for connection to a signal emitting component, and at the output, to an integrator, wherein a unit for injecting a charge signal is mounted between the terminals and the charge amplifier and is connected to a control unit connected to an output of the acquisition circuit, the control unit is so arranged as to control the injection of a charge signal, to detect a resultant signal at the output of the acquisition circuit and to compare the resultant signal with the injected signal, and wherein the injection unit comprises a channel of injection in common mode and a channel of injection in differential mode, and a switch controlled by the control unit to select the one or the other of the injection channels.
Dependencies are inferred from the claim text.