Bootstrapped switch circuit, a track-and-hold circuit, an analog-to-digital converter, a method for operating a track-and-hold circuit, a base station and a mobile device
AssigneeIntel Corporation
InventorsGiacomo Cascio, Martin Clara, Christian Lindholm
Life of this patent
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Abstract
The present disclosure relates to a bootstrapped switch circuit, a track-and-hold circuit, an analog-to-digital converter, a method for operating a track-and-hold circuit, a base station, and a mobile station. The bootstrapped switch circuit comprises an output for an output signal, a first input, a switching element configured to couple the output with a signal from the first input, a bootstrapper capacitor configured to drive the switching element, and a second input coupled to the bootstrapper capacitor.
Claims22
A track-and-hold circuit, comprising:
- a bootstrapped switch circuit, comprising:
- an output for an output signal,
- a first input,
- a switching element configured to couple the output with a signal from the first input,
- a bootstrapper configured to drive the switching element, wherein the bootstrapper includes a bootstrapper capacitor, and
- a second input coupled to the bootstrapper;
- and
- a driving circuit configured to provide two coupled driving signals for the first and second inputs of the bootstrapped switch circuit,
- wherein the driving circuit is further configured to provide the two coupled driving signals as a closed loop driving signal and an open loop driving signal.
A track-and-hold circuit, comprising:
- a bootstrapped switch circuit, comprising:
- an output for an output signal,
- a first input,
- a switching element configured to couple the output with a signal from the first input,
- a bootstrapper configured to drive the switching element, wherein the bootstrapper includes a bootstrapper capacitor, and
- a second input coupled to the bootstrapper;
- a sampling capacitor coupled to the output;
- and
- an operational amplifier with at least a closed loop output coupled to the first input of the bootstrapped switch circuit and an open loop output coupled to the second input of the bootstrapped switch circuit.
A method for operating a track-and-hold circuit, the method comprising:
- generating a first driving signal using a closed-loop output of an operational amplifier circuit based on an input signal;
- generating a second driving signal using an open-loop output of the operational amplifier circuit based on the input signal;
- using the first driving signal to charge a sampling capacitor via a switching element;
- and
- using the second driving signal to drive the switching element via a bootstrapper including a bootstrapper capacitor.
A track-and-hold circuit, comprising:
- a switching element;
- a sampling capacitor;
- a bootstrapper including a bootstrapper capacitor;
- and
- an operational amplifier having a closed-loop output and an open-loop output,
- wherein the operational amplifier is configured to generate, based on an input signal, a first driving signal at the closed loop output and a second driving signal at an open-loop output;
- wherein the switching element is configured to be driven by the second driving signal via the bootstrapper capacitor, and
- wherein the sampling capacitor is configured to be charged by the first driving signal via the switching element.
Dependencies are inferred from the claim text.