CPC H03M 1/1014 (2013.01) | 10 Claims |
1. A digital-to-analog conversion device, comprising: a control module, n conversion modules, an adder and a feedback module; wherein n is an integer greater than or equal to 2, each of the n conversion modules comprises one conversion coefficient, and n conversion coefficients comprised in the n conversion modules increase progressively;
the control module is electrically connected to the n conversion modules; the control module is configured to: split an input digital signal into n intermediate digital portions, divide each of the n intermediate digital portions by a conversion coefficient of a conversion module corresponding to the each of the n intermediate digital portions to obtain n intermediate digital signals, and transmit the n intermediate digital signals to the n conversion modules which are in one-to-one correspondence with the n intermediate digital signals; wherein the n intermediate digital portions increase progressively;
each of the n conversion modules is configured to perform digital-to-analog conversion on an intermediate digital signal corresponding to the each of the n conversion modules, wherein a converted result of the intermediate digital signal comprises the conversion coefficient of each of the n conversion modules;
the n conversion modules are each electrically connected to the adder; and the adder is configured to add up output signals of the n conversion modules to obtain an analog signal and output the analog signal; and
the feedback module is configured to collect the analog signal and obtain a feedback signal according to the analog signal; and the control module is further configured to acquire the feedback signal, and adjust allocation of the n intermediate digital portions according to a target digital signal and the feedback signal.
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