US 12,237,042 B2
Data receiving circuit, data receiving system and memory device
Feng Lin, Hefei (CN)
Assigned to CHANGXIN MEMORY TECHNOLOGIES, INC., Hefei (CN)
Filed by CHANGXIN MEMORY TECHNOLOGIES, INC., Hefei (CN)
Filed on Sep. 26, 2022, as Appl. No. 17/952,394.
Application 17/952,394 is a continuation of application No. PCT/CN2022/104757, filed on Jul. 8, 2022.
Claims priority of application No. 20221076628.4 (CN), filed on Jun. 23, 2022.
Prior Publication US 2023/0016678 A1, Jan. 19, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G11C 7/10 (2006.01); G11C 7/22 (2006.01); H03F 3/45 (2006.01); G11C 7/02 (2006.01)
CPC G11C 7/1048 (2013.01) [G11C 7/1078 (2013.01); G11C 7/1084 (2013.01); G11C 7/1087 (2013.01); G11C 7/1093 (2013.01); G11C 7/222 (2013.01); H03F 3/45183 (2013.01); G11C 7/02 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A data receiving circuit, comprising:
a first amplification circuit, configured to receive a data signal, a first reference signal and a second reference signal, perform first comparison on the data signal and the first reference signal in response to a sampling clock signal and output a first signal pair as a result of the first comparison, and perform second comparison on the data signal and the second reference signal, and output a second signal pair as a result of the second comparison, wherein a level of the first reference signal is different from a level of the second reference signal, the first signal pair comprises a first signal and a second signal, and the second signal pair comprises a third signal and a fourth signal; and
a second amplification circuit, configured to receive an enable signal and a feedback signal, selectively receive the first signal pair or the second signal pair as an input signal pair based on the feedback signal during a period in which the enable signal is at a first level, receive the first signal pair as the input signal pair during a period in which the enable signal is at a second level, amplify a voltage difference of the input signal pair, and output a first output signal and a second output signal as an amplification result, wherein the feedback signal is obtained based on previously received data.