US 12,407,355 B2
Digital-to-analog conversion circuit and method
Li Yang, Shenzhen (CN); Qianwen Zhang, Shenzhen (CN); Changqing Wen, Shenzhen (CN); and Aimei Liang, Shenzhen (CN)
Assigned to SHENZHEN PANGO MICROSYSTEMS CO., LTD., Shenzhen (CN)
Filed by SHENZHEN PANGO MICROSYSTEMS CO., LTD., Shenzhen (CN)
Filed on Jun. 29, 2023, as Appl. No. 18/343,749.
Application 18/343,749 is a continuation of application No. PCT/CN2021/079754, filed on Mar. 9, 2021.
Claims priority of application No. 202011627453.9 (CN), filed on Dec. 31, 2020.
Prior Publication US 2023/0344435 A1, Oct. 26, 2023
Int. Cl. H03M 1/78 (2006.01); H03M 1/06 (2006.01)
CPC H03M 1/0604 (2013.01) 16 Claims
OG exemplary drawing
 
1. A digital-to-analog conversion circuit, comprising:
a conversion unit comprising a first code value receiving terminal, wherein the first code value receiving terminal is configured to receive a first code value, and the conversion unit is configured to convert the first code value into an analog signal; and
a first adjustment unit comprising a second code value receiving terminal, wherein the second code value receiving terminal is used to receive a second code value, a first signal input terminal of the first adjustment unit is connected to a signal output terminal of the conversion unit, and the first adjustment unit is configured to: obtain a first analog adjustment signal according to the second code value, and adjust, with the first analog adjustment signal, the analog signal transmitted from the conversion unit, to obtain a target signal;
wherein the first adjustment unit comprises k third resistor-selection sub-units, each of the third resistor-selection sub-units comprises a third switch element and a fifth resistor, and the third switch element is connected in parallel to the fifth resistor.