Back to results
US 12,015,395 B2Granted
Charge sensitive amplifier circuit for sensor frontend
Assigneeams International AG
InventorsAndreas Fitzi, Roger Ehrensperger
Life of this patent
Estimating the term…
Abstract
A charge sensitive amplifier circuit for sensor frontend comprises an input node to be connected to a sensor to receive an input charge, and an output node to be connected to a charge conversion circuit. The charge sensitive amplifier circuit comprises a first transfer switch located between the input node and the output node to transfer the input charge to the output node. The charge sensitive amplifier circuit further comprises a second transfer switch located in parallel to the first transfer switch between the input node and the output node to transfer the input charge to the output node.
Claims16
A charge sensitive amplifier circuit for sensor frontend, comprising:
- an input node to be connected to a sensor to receive an input charge;
- an output node to be connected to a charge conversion circuit;
- a first transfer switch located between the input node and the output node to transfer the input charge to the output node;
- a second transfer switch located in parallel to the first transfer switch between the input node and the output node to transfer the input charge to the output node;
- and
- a control circuit to generate a respective control signal to control a respective conductivity of the first and second transfer switch,
- wherein the control circuit is configured to generate the respective control signal for controlling the first and second transfer switch during a respective transfer time of the first and second transfer switch to transfer the input charge from the input node to the output node,
- wherein the control circuit is configured to generate the respective control signal for the first and second transfer switch such that the respective first and second transfer switch is operated in a time dependent operation state during the respective transfer time of the first and second transfer switch, and
- wherein the control circuit is configured to generate the respective control signal for controlling the first and second transfer switch such that the respective conductivity of the first and second transfer switch is higher at a beginning of the respective transfer time of the first and second transfer switch than in an end phase of the respective transfer time of the first and second transfer switch.
6 more elements
A charge sensitive amplifier circuit for sensor frontend, comprising:
- an input node to be connected to a sensor to receive an input charge;
- an output node to be connected to a charge conversion circuit;
- a first transfer switch located between the input node and the output node to transfer the input charge to the output node;
- a second transfer switch located in parallel to the first transfer switch between the input node and the output node to transfer the input charge to the output node;
- and
- a control circuit to generate a respective control signal to control a respective conductivity of the first and second transfer switch,
- wherein the control circuit is configured to generate the respective control signal for controlling the first and second transfer switch during a respective transfer time of the first and second transfer switch to transfer the input charge from the input node to the output node,
- wherein the control circuit is configured to generate the respective control signal for the first and second transfer switch such that the respective first and second transfer switch is operated in a time dependent operation state during the respective transfer time of the first and second transfer switch,
- wherein, at a beginning of the respective transfer time of the first and second transfer switch, the conductivity of the second transfer switch is higher than the conductivity of the first transfer switch, and
- wherein, at an end of the respective transfer time of the first and second transfer switch, the conductivity of the second transfer switch is lower than the conductivity of the first transfer switch.
7 more elements
A charge sensitive amplifier circuit for sensor frontend, comprising:
- an input node to be connected to a sensor to receive an input charge;
- an output node to be connected to a charge conversion circuit;
- a first transfer switch located between the input node and the output node to transfer the input charge to the output node;
- a second transfer switch located in parallel to the first transfer switch between the input node and the output node to transfer the input charge to the output node;
- and
- a control circuit to generate a respective control signal to control a respective conductivity of the first and second transfer switch,
- wherein the control circuit is configured to generate the respective control signal for controlling the first and second transfer switch during a respective transfer time of the first and second transfer switch to transfer the input charge from the input node to the output node,
- wherein the control circuit is configured to generate the respective control signal for the first and second transfer switch such that the respective first and second transfer switch is operated in a time dependent operation state during the respective transfer time of the first and second transfer switch, and
- wherein the control circuit is configured to generate the respective control signal for controlling the first and second transfer switch such that an end phase of the transfer time of the second transfer switch ends before the end phase of the transfer time of the first transfer switch.
6 more elements
Dependencies are inferred from the claim text.