US 12,461,884 B2
Serial interface receiver and offset calibration method thereof
Jahoon Jin, Suwon-si (KR); Kyunghwan Min, Suwon-si (KR); Sangho Kim, Suwon-si (KR); Hyoungjoong Kim, Suwon-si (KR); Soomin Lee, Suwon-si (KR); and Sodam Ju, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Aug. 30, 2023, as Appl. No. 18/458,332.
Claims priority of application No. 10-2023-0030648 (KR), filed on Mar. 8, 2023.
Prior Publication US 2024/0303214 A1, Sep. 12, 2024
Int. Cl. G06F 13/42 (2006.01); H03K 5/24 (2006.01)
CPC G06F 13/4282 (2013.01) [H03K 5/24 (2013.01); G06F 2213/0002 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A receiver of a serial interface, comprising:
a first multiplexer configured to select one of a data signal or a first reference voltage based on an enable signal;
a second multiplexer configured to select one of the first reference voltage or a second reference voltage based on the enable signal;
a comparator including a positive input terminal and a negative input terminal, the comparator configured to receive an output of the first multiplexer through the positive input terminal and an output of the second multiplexer through the negative input terminal; and
a reference generator configured to generate the second reference voltage and to generate, using a unity gain buffer, the first reference voltage from the second reference voltage,
wherein the receiver is configured such that when the first multiplexer or the second multiplexer selects the first reference voltage the other of the first multiplexer or the second multiplexer selects the first reference voltage.