发明名称 |
Sensing amplifier utilizing bit line clamping devices and sensing method thereof |
摘要 |
A sensing amplifier comprising a clamp circuit is provided. The clamp circuit is coupled between a first node and a second node. The clamp circuit comprises a first P-type transistor having a first terminal, a second terminal and a control terminal receiving a first bias signal, the first terminal and the second terminal of the first P-type transistor are coupled to the first node and the second node, respectively, and a sensing current from the memory cell flows into the second node via the first node during a sensing time period. |
申请公布号 |
US9520195(B2) |
申请公布日期 |
2016.12.13 |
申请号 |
US201314049257 |
申请日期 |
2013.10.09 |
申请人 |
MACRONIX INTERNATIONAL CO., LTD. |
发明人 |
Chen Chung-Kuang |
分类号 |
G11C16/06;G11C16/04;G11C7/08;G11C7/06;G11C16/26;G11C16/10 |
主分类号 |
G11C16/06 |
代理机构 |
McClure, Qualey Rodack, LLP |
代理人 |
McClure, Qualey Rodack, LLP |
主权项 |
1. A sensing amplifier, for sensing data stored in a memory cell of a memory string of which one end is coupled to a third node and another end is coupled to a common source line, comprising:
a clamp circuit coupled between a first node and a second node, wherein the clamp circuit comprises a first P-type transistor having a first terminal, a second terminal and a control terminal receiving a first bias signal, the first terminal and the second terminal of the first P-type transistor are coupled to the first node and the second node, respectively, and an isolating transistor, coupled between the third node and the first node; wherein the voltage level of the third node is set to be less than the voltage level of the common source line in a bias setup time period, and the first P-type transistor accordingly clamps the voltage level of the first node to be higher than the voltage level of the second node, such that a sensing current from the memory cell flows into the second node via the first node during a sensing time period subsequent to the bias setup time period. |
地址 |
Hsinchu TW |