Cyclic pipeline analog to digital converter with enhanced accuracy
First Claim
1. A cyclic pipeline analog to digital converter, comprising:
- a sample/hold module, which generates a sample signal according to an analog-input signal and a residual signal;
a sub-analog/digital converting module, which generates a first control signal and a second control signal at different time alternately according to a digital converting result of the sample signal; and
an alternate digital/analog converting module, which decides to receive a first reference signal and a second reference signal separately according to the first control signal and the second control signal, generates a first transfer signal according to at least the sample signal among the sample signal, the first reference signal and a first feedback signal, generates a second transfer signal according to at least the sample signal among the sample signal, the second reference signal and the first feedback signal, and generates the first feedback signal and the residual signal according to one of the first transfer signal and the second transfer signal.
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Accused Products
Abstract
A cyclic pipeline analog to digital converter includes a sample/hold module, a sub-analog/digital converting module, and an alternate digital/analog converting module. The sample/hold module generates a sample signal according to an analog-input signal and a residue signal. The sub-analog/digital converting module generates a first control signal and a second control signal alternately in different time according to the converting result of the sample signal. The alternate digital/analog converting module decides to receive a first reference signal and a second reference signal separately according to the first control signal and the second control signal. The alternate digital/analog converting module generates a first transfer signal according to at least the sample signal among the sample signal, the first reference signal and a first feedback signal, and generates a second transfer signal according to at least the sample signal among the sample signal, the second reference signal and a first feedback signal. The alternate digital/analog converting module generates the first feedback signal and the residue signal according to one of the first transfer signal and the second transfer signal.
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Citations
13 Claims
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1. A cyclic pipeline analog to digital converter, comprising:
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a sample/hold module, which generates a sample signal according to an analog-input signal and a residual signal;
a sub-analog/digital converting module, which generates a first control signal and a second control signal at different time alternately according to a digital converting result of the sample signal; and
an alternate digital/analog converting module, which decides to receive a first reference signal and a second reference signal separately according to the first control signal and the second control signal, generates a first transfer signal according to at least the sample signal among the sample signal, the first reference signal and a first feedback signal, generates a second transfer signal according to at least the sample signal among the sample signal, the second reference signal and the first feedback signal, and generates the first feedback signal and the residual signal according to one of the first transfer signal and the second transfer signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification