发明授权
- 专利标题: Sensing amplifier with current mirror
- 专利标题(中): 感应放大器带电流镜
-
申请号: US845270申请日: 1997-04-24
-
公开(公告)号: US5856748A公开(公告)日: 1999-01-05
- 发明人: Yong-Seok Seo , Heung-Soo Im
- 申请人: Yong-Seok Seo , Heung-Soo Im
- 申请人地址: KRX Suwon
- 专利权人: Samsung Electronics, Co., Ltd.
- 当前专利权人: Samsung Electronics, Co., Ltd.
- 当前专利权人地址: KRX Suwon
- 优先权: KRX199612701 19960424
- 主分类号: G11C11/419
- IPC分类号: G11C11/419 ; G11C7/06 ; G11C11/407 ; H03F3/45
摘要:
A sense amplifier increases the differential voltage between a reference signal and a sense signal by using a current mirror to control the generation of the reference signal and the sense signal responsive to a common control signal. The sense amplifier includes a reference signal generator for generating the reference signal at a reference node responsive to a reference cell, a sense signal generator for generating the sense signal at a sense node responsive to the state of a memory cell, and a differential amplifier for amplifying the voltage difference between the reference signal and the sense signal. The reference node is coupled to the reference cell which discharges current from the reference node, and the sense node is coupled to the memory cell which discharges current from the sense node. The reference signal generator includes a first current source transistor that is coupled between a power supply terminal and the reference node. The sense signal generator includes a second current source transistor coupled between the power supply terminal and the sense node. The control terminals of the first and second transistors are coupled together to receive the common control signal from either the reference node or the sense node. In either configuration, the control terminal of one of the current source transistor is decoupled from its respective node to allow the voltage of the node to vary widely with respect to the other node.
公开/授权文献
- US4699845A Easily-adhesive polyester film 公开/授权日:1987-10-13