Patent ID: 11867563
Assignee: LYNRED
Field: Basic communication processes (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A device for integrating an electric current received on an integration node during an integration period Tint, said device comprising:
an operational amplifier having two inputs and one output; a first input being connected to said integration node and a second input being taken to a constant voltage;
an integration capacitor connected between said first input and said output of the operational amplifier; said output delivering an output voltage which varies according to the variation of the quantity of charges in said integration capacitor;
a modification circuit for modifying said output voltage;
a comparison circuit configured to trigger said modification circuit at least once during said integration period when said output voltage is substantially equal to a reference voltage; and
a storage circuit configured to store a number of triggerings which have occurred during said integration period;, said electric current received on the integration node being calculated according to said output voltage as well as to said number of triggerings multiplied by said modification of said output voltage induced by said modification circuit;, wherein the circuit for modifying said output voltage is formed by a charge transfer circuit, configured to be connected on said integration node and to transfer charges into said integration capacitor when the comparison circuit detects that said output voltage is substantially equal to said reference voltage.