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US 7,733,815 B2Granted
Data sampler including a first stage and a second stage
AssigneeQimonda AG
InventorsKarthik Gopalakrishnan, Luca Ravezzi, Sivaraman Chokkalingam, Edoardo Prete, Hamid Partovi
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Abstract
A data sampler including a first stage and a second stage. The first stage is configured to receive differential signals and provide a first edge rate in a first output signal and a second edge rate in a second output signal based on the differential signals. The second stage is configured to amplify the difference between the first output signal and the second output signal to provide regenerated output signals. The second stage provides a third edge rate in a first internal signal and a fourth edge rate in a second internal signal based on the first edge rate and the second edge rate.
Claims21
A data sampler comprising:
- a first stage configured to receive differential signals and provide, based on the differential signals, a signal transition having a first edge rate in a first output signal and a signal transition having a second edge rate in a second output signal, wherein the first edge rate is different than the second edge rate;
- and
- a second stage configured to amplify the difference between the first output signal and the second output signal to provide regenerated output signals, wherein the second stage provides, based on the first edge rate and the second edge rate, a signal transition having a third edge rate in a first internal signal and a signal transition having a fourth edge rate in a second internal signal;
- wherein the first output signal and the second output signal are pre-charged to a first voltage during one state of a clock signal and the first internal signal and the second internal signal are pre-charged to a second voltage in response to the pre-charged first output signal and the pre-charged second output signal.
1 more element
An electronic system comprising:
- a sampler configured to receive differential signals and provide regenerated output signals, wherein the sampler comprises:
- a first stage configured to receive the differential signals and provide, based on the differential signals, a first output signal with a signal transition having a first edge rate and a second output signal with a signal transition having a second edge rate, wherein the first edge rate is different than the second edge rate;
- and
- a second stage configured to receive the first output signal and the second output signal and provide a first internal signal and a second internal signal based on the first output signal and the second output signal, wherein the first output signal and the second output signal are pre-charged to a first voltage during one state of a clock signal and the first internal signal and the second internal signal are pre-charged to a second voltage based on the pre-charged first output signal and the pre-charged second output signal.
1 more element
A data sampler comprising:
- means for receiving differential signals at a first stage;
- means for providing, based on the differential signals, a first output signal with a signal transition having a first edge rate and a second output signal with a signal transition having a second edge rate, wherein the first edge rate is different than the second edge rate;
- means for pre-charging the first output signal and the second output signal to a first voltage based on a clock signal;
- means for receiving the first output signal and the second output signal at a second stage;
- means for providing a first internal signal and a second internal signal based on the first output signal and the second output signal;
- and
- means for pre-charging the first internal signal and the second internal signal to a second voltage based on the pre-charged first output signal and the pre-charged second output signal.
4 more elements
A data sampler comprising:
- means for receiving differential signals at a first stage;
- means for providing, based on the differential signals, a signal transition having a first edge rate in a first output signal and a signal transition having a second edge rate in a second output signal, wherein the first edge rate is different than the second edge rate;
- means for receiving the first output signal and the second output signal at a second stage;
- and
- means for providing, based on the first edge rate and the second edge rate, a signal transition having a third edge rate in a first internal signal and a signal transition having a fourth edge rate in a second internal signal;
- wherein the means for providing a signal transition having a first edge rate in a first output signal and a signal transition having a second edge rate in a second output signal comprises:
- means for pre-charging the first output signal and the second output signal to a first voltage based on a clock signal;
- and
- means for transitioning the first output signal and the second output signal to a second voltage in response to an edge of the clock signal.
6 more elements
A method for sampling data comprising:
- receiving differential signals at a first stage;
- pre-charging a first output signal and a second output signal to a first voltage based on a clock signal;
- pre-charging a first internal signal and a second internal signal to a second voltage based on the pre-charged first output signal and the pre-charged second output signal;
- transitioning, based on the differential signals, the first output signal at a first edge rate and the second output signal at a second edge rate, wherein the first edge rate is different than the second edge rate;
- receiving the first output signal and the second output signal at a second stage;
- and
- transitioning the first internal signal and the second internal signal based on the first output signal and the second output signal.
4 more elements
A method for sampling data comprising:
- receiving differential signals at a first stage;
- providing, based on the differential signals, a signal transition having a first edge rate in a first output signal and a signal transition having a second edge rate in a second output signal, wherein the first edge rate is different than the second edge rate;
- receiving the first output signal and the second output signal at a second stage;
- and
- providing a signal transition having a third edge rate in a first internal signal and a signal transition having a fourth edge rate in a second internal signal based on the first edge rate and the second edge rate;
- wherein providing a signal transition having a first edge rate in a first output signal and a signal transition having a second edge rate in a second output signal comprises:
- pre-charging the first output signal and the second output signal to a first voltage based on a clock signal;
- and
- transitioning the first output signal and the second output signal to a second voltage in response to an edge of the clock signal.
6 more elements
Dependencies are inferred from the claim text.