REFERENCE VOLTAGE SHIFTING TECHNIQUE FOR OPTIMIZING SNR PERFORMANCE IN PIPELINE ADCS WITH RESPECT TO INPUT SIGNAL
First Claim
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1. An apparatus comprising:
- a first circuit configured to generate a plurality of digital intermediate signals in response to an analog input signal, a first set of threshold and reference voltages and a second set of threshold reference voltages, wherein the threshold and reference voltages of said first set are shifted with respect to corresponding threshold and reference voltages of said second set; and
a second circuit configured to generate a digital output signal in response to the plurality of digital intermediate signals.
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Abstract
An apparatus comprising a first circuit and a second circuit. The first circuit may be configured to generate a plurality of digital intermediate signals in response to an analog input signal, a first set of threshold and reference voltages and a second set of threshold and reference voltages, where the threshold and reference voltages of the first set are shifted with respect to corresponding threshold and reference voltages of the second set. The second circuit may be configured to generate a digital output signal in response to the plurality of digital intermediate signals.
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Citations
20 Claims
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1. An apparatus comprising:
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a first circuit configured to generate a plurality of digital intermediate signals in response to an analog input signal, a first set of threshold and reference voltages and a second set of threshold reference voltages, wherein the threshold and reference voltages of said first set are shifted with respect to corresponding threshold and reference voltages of said second set; and a second circuit configured to generate a digital output signal in response to the plurality of digital intermediate signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus comprising:
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means for generating a plurality of digital intermediate signals in response to an analog input signal, a first set of threshold and reference voltages and a second set of threshold and reference voltages, wherein the threshold and reference voltages of said first set are shifted with respect to corresponding threshold and reference voltages of said second set; and means for generating a digital output signal in response to the plurality of digital intermediate signals.
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13. A method of reference voltage shifting in a pipeline ADC comprising the steps of:
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generating a plurality of digital intermediate signals in response to an analog input signal, a first set of threshold and reference voltages and a second set of threshold and reference voltages, wherein the threshold and reference voltages of said first set are shifted with respect to corresponding threshold and reference voltages of said second set; and generating a digital output signal in response to the plurality of digital intermediate signals. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification