US 12,224,766 B2
Analog digital converter and method for analog to digital converting in the analog digital converter
Young Sea Cho, Seongnam-si (KR); Wan Kim, Hwaseong-si (KR); and Yong Lim, Seoul (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Nov. 22, 2022, as Appl. No. 18/057,969.
Claims priority of application No. 10-2021-0164213 (KR), filed on Nov. 25, 2021; and application No. 10-2022-0021205 (KR), filed on Feb. 18, 2022.
Prior Publication US 2023/0163778 A1, May 25, 2023
Int. Cl. H03M 1/38 (2006.01); H03M 1/12 (2006.01); H03M 1/06 (2006.01); H03M 1/46 (2006.01); H03M 1/66 (2006.01)
CPC H03M 1/38 (2013.01) [H03M 1/1245 (2013.01); H03M 1/0604 (2013.01); H03M 1/462 (2013.01); H03M 1/66 (2013.01)] 21 Claims
OG exemplary drawing
 
1. An analog-to-digital converter comprising:
a comparator including a first input node receiving an output of a plurality of first unit capacitors and a second input node receiving an output of a plurality of second unit capacitors;
a control logic configured to output first and second control signals on the basis of an output signal of the comparator; and
a reference voltage adjustment circuit configured to adjust an output voltage provided to the comparator on the basis of the first and second control signals, wherein the reference voltage adjustment circuit comprises a first pull-up circuit configured to apply a first reference voltage to each of the plurality of first unit capacitors and a first pull-down circuit configured to apply a second reference voltage to each of the plurality of second unit capacitors, based on the first and second controls signals.