US 12,081,227 B2
Digital-to-analog converter and apparatus including the same
Byungwoo Koo, Suwon-si (KR); Sangpil Nam, Pohang-si (KR); Sunghan Do, Suwon-si (KR); Junsang Park, Seoul (KR); Jungho Lee, Anyang-si (KR); Youngjae Cho, Hwaseong-si (KR); and Michael Choi, Seoul (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on May 19, 2022, as Appl. No. 17/748,746.
Claims priority of application No. 10-2021-0117944 (KR), filed on Sep. 3, 2021.
Prior Publication US 2023/0071628 A1, Mar. 9, 2023
Int. Cl. H03M 1/66 (2006.01); H03F 3/20 (2006.01); H04B 1/00 (2006.01)
CPC H03M 1/66 (2013.01) [H03F 3/20 (2013.01); H04B 1/005 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus configured to transmit and receive a radio frequency (RF) signal, the apparatus comprising:
a digital-to-analog converter (DAC) configured to convert a digital signal into an analog signal;
a power amplifier configured to amplify the analog signal; and
an antenna configured to output, as the RF signal, the amplified analog signal to the outside,
wherein the DAC comprises:
a current cell matrix comprising a plurality of current cells configured to generate the analog signal;
a plurality of normal paths configured to control the plurality of current cells to be turned on or off, based on the digital signal; and
a plurality of alternative paths configured to selectively consume power and output dummy data, based on a pattern of the digital signal.