Dual mode focal plane array
AssigneeRaytheon Company
InventorJehyuk Rhee
Life of this patent
Estimating the term…
Abstract
A dual mode focal plane array having a readout integrated circuit (IC) is provided herein that is electrically switchable between a first mode (e.g., direction injection mode) and a second mode (e.g., buffered direction injection) based in part on a level of a detection current. The IC includes a switching network disposed between an operational amplifier and a switching element to transition the IC between the first and second mode responsive to a control signal. The control signal can include instructions to open or close the one or more switches of the switching network and thus transition the IC between the different modes.
Claims20
An integrated circuit comprising:
- an operational amplifier having a first input and a second input, wherein the second input is coupled to a feedback signal path;
- a switching network having a first switch and a second switch, wherein the first switch is coupled between an output of the operational amplifier and the feedback signal path and the second switch is coupled between a detection signal path and the feedback signal path, and wherein the switching network is configured to switch the integrated circuit between a first mode and a second mode responsive to a level of a detection current generated on the detection signal path;
- and
- an input device having a first terminal coupled to the output of the operational amplifier, and a second terminal coupled to the detection signal path to receive the detection current, and a third terminal.
A method for transitioning an integrated circuit between a first mode and a second mode, the method comprising:
- generating a detection current on a detection signal path of the integrated circuit in response to a received signal, wherein the integrated circuit includes:
- an operational amplifier having a first input and a second input, wherein the second input is coupled to a feedback signal path;
- a switching network having a first switch and a second switch, wherein the first switch is coupled between an output of the operational amplifier and the feedback signal path and the second switch is coupled between the detection signal path and the feedback signal path;
- and
- an input device having a first terminal coupled to an output of the operational amplifier, a second terminal coupled to the detection signal path to receive the detection current, and a third terminal;
- and
- generating a control signal for the switching network in response to a level of the detection current;
- and
- transitioning the integrated circuit between the first mode and the second mode in response to the control signal.
Dependencies are inferred from the claim text.