US 11,700,007 B2
Digital-to-analog conversion device and method
Xi Fang, Shanghai (CN); Gang Du, Shanghai (CN); and Min Xu, Shanghai (CN)
Assigned to SHANGHAI CHENZHU INSTRUMENT CO., LTD.
Appl. No. 17/638,400
Filed by SHANGHAI CHENZHU INSTRUMENT CO., LTD., Shanghai (CN)
PCT Filed Mar. 15, 2021, PCT No. PCT/CN2021/080858
§ 371(c)(1), (2) Date Feb. 25, 2022,
PCT Pub. No. WO2022/165921, PCT Pub. Date Aug. 11, 2022.
Claims priority of application No. 202110166570.8 (CN), filed on Feb. 4, 2021.
Prior Publication US 2023/0118057 A1, Apr. 20, 2023
Int. Cl. H03M 1/10 (2006.01)
CPC H03M 1/1014 (2013.01) 10 Claims
OG exemplary drawing
 
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.