US 11,955,154 B2
Sense amplifier circuit with temperature compensation
Cheng-Tung Huang, Kaohsiung (TW); Jen-Yu Wang, Tainan (TW); Po-Chun Yang, Tainan (TW); Yi-Ting Wu, Tainan (TW); Yung-Ching Hsieh, Tainan (TW); Jian-Jhong Chen, Tainan (TW); and Chia-Wei Lee, Kaohsiung (TW)
Assigned to UNITED MICROELECTRONICS CORP., Hsin-Chu (TW)
Filed by UNITED MICROELECTRONICS CORP., Hsin-Chu (TW)
Filed on May 16, 2022, as Appl. No. 17/744,746.
Claims priority of application No. 202210425675.5 (CN), filed on Apr. 21, 2022.
Prior Publication US 2023/0343379 A1, Oct. 26, 2023
Int. Cl. G11C 7/00 (2006.01); G11C 11/16 (2006.01)
CPC G11C 11/1673 (2013.01) 10 Claims
OG exemplary drawing
 
1. A sense amplifier circuit with temperature compensation, comprising:
a sense amplifier, including:
a first input end coupled to a target bit having high impedance in a first state and having low impedance in a second state, wherein the high impedance has a first temperature coefficient and the low impedance has a second temperature coefficient;
a second input end; and
an output end;
a first switch configured to operate according to a first control signal for providing reference impedance having a third temperature coefficient, and including:
a first end coupled to the second input end of the sense amplifier;
a second end; and
a control end for receiving the first control signal; and
a temperature compensation circuit coupled to the control end of the first switch and configured to provide the first control signal having a fourth temperature coefficient, wherein the first temperature coefficient, the second temperature coefficient and the third temperature coefficient have a same polarity, and the fourth temperature coefficient and the first temperature coefficient have opposite polarities.