US 12,224,760 B2
Current steering digital-to-analog converter and integrated circuit including the same
Youngsea Cho, Seongnam-si (KR); Wan Kim, Hwaseong-si (KR); Jiseon Paek, Suwon-si (KR); and Seunghyun Oh, Seoul (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Jan. 25, 2024, as Appl. No. 18/422,192.
Application 18/422,192 is a continuation of application No. 17/673,127, filed on Feb. 16, 2022, granted, now 11,916,562.
Claims priority of application No. 10-2021-0062159 (KR), filed on May 13, 2021.
Prior Publication US 2024/0171186 A1, May 23, 2024
Int. Cl. H03M 1/38 (2006.01); H03M 1/06 (2006.01); H03M 1/66 (2006.01)
CPC H03M 1/0617 (2013.01) [H03M 1/38 (2013.01); H03M 1/66 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A current steering digital-to-analog converter comprising:
a first current cell configured to selectively output a first current based on a first input signal and adjust an output amplitude of the first current based on a first bias voltage;
a first dummy current cell configured to output a second current based on a second input signal and adjust the output amplitude of the second current based on the first bias voltage; and
a first bias circuit configured to detect a change in a first voltage of a first internal node of the first dummy current cell and adjust the first bias voltage to correspond to the detected change in the first voltage.